A soil and water conservation optimal configuration and spatial distribution technical method, system and medium

Abstract

The application provides a water and soil conservation optimal configuration and spatial distribution technical method, system and medium, relates to the technical field of water and soil conservation, hydrological simulation analysis is carried out on each control unit of the target basin, the water and soil conservation measures to be implemented, the construction regulation and storage capacity, and the first priority order are determined; according to the construction regulation and storage capacity, the investment-output ratio and the suitability evaluation index are combined to determine the construction area of each water and soil conservation measure; the comprehensive suitability evaluation index is established, the water and soil conservation measures to be implemented in each configuration unit and the second priority order are determined; the number of configuration units required to be distributed in the control unit of each measure is determined in combination with the construction area; finally, the spatial distribution of the water and soil conservation measures in the target basin is carried out, so that the spatial planning of the water and soil conservation measures in the target basin and the layout of the water and soil conservation measures to be implemented in each region are more reasonable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water and soil conservation, and in particular to a water and soil conservation optimal configuration and spatial distribution technical method, system and medium. BACKGROUND

[0002] Water and soil conservation measures are widely used in small watershed comprehensive management due to their positive effects on increasing slope water resource storage capacity, improving local water availability, and conserving water and soil. It should be emphasized that existing researches focus on the effects of water and soil conservation measure types, area sizes, and other factors on water cycle element processes and their regulation of water and soil loss, while ignoring the significant differences in the regulation of related element processes due to different spatial locations of water and soil conservation measures, resulting in the current watershed water and soil conservation construction being oriented towards agricultural production or water and soil loss problems, with temporal randomness and spatial fragmentation, and lacking overall planning in time and space.

[0003] In addition, existing water and soil conservation optimal configuration techniques mostly use single-objective or multi-objective optimization methods to simulate and determine the construction area of different types of water and soil conservation measures, without distributing the construction area to specific spatial locations, and thus cannot provide a definite water and soil conservation spatial layout scheme.

[0004] Therefore, there is an urgent need for a new water and soil conservation optimal configuration and spatial distribution technical method. SUMMARY

[0005] In view of the above problems, the embodiments of the present application provide a water and soil conservation optimal configuration and spatial distribution technical method, system and medium, in order to overcome the above problems or at least partially overcome the above problems.

[0006] In a first aspect, the embodiments of the present application provide a water and soil conservation optimal configuration and spatial distribution technical method, which comprises:

[0007] Based on the digital terrain information and river system information of the target watershed, a plurality of control units are determined, and each control unit is grid-divided to obtain a plurality of configuration units within each control unit;

[0008] Each control unit is subjected to hydrological simulation analysis to determine the proposed construction storage capacity of the water and soil conservation measures to be implemented for each control unit, and the first priority order of the spatial distribution of the water and soil conservation measures to be implemented for each control unit;

[0009] According to the proposed construction storage capacity of the water and soil conservation measures to be implemented for each control unit, and in combination with the input-output ratio evaluation index and suitability evaluation index of each water and soil conservation measure, the proposed construction area of each water and soil conservation measure to be implemented for each control unit is determined;

[0010] establishing a comprehensive suitability evaluation index, determining the water and soil conservation measures to be implemented for each configuration unit in each control unit according to the comprehensive suitability evaluation index, and determining a second priority order of spatial distribution of the water and soil conservation measures to be implemented for each configuration unit according to the comprehensive suitability evaluation index;

[0011] determining the number of configuration units to be distributed for each water and soil conservation measure in each control unit in combination with the construction area of each water and soil conservation measure to be implemented for each control unit;

[0012] spatially distributing the water and soil conservation measures in the target basin according to the first priority order, the second priority order, the water and soil conservation measures to be implemented for each configuration unit, and the number of configuration units to be distributed for each water and soil conservation measure.

[0013] Optionally, the digital terrain information and river system information of the target basin are used to determine a plurality of control units, including:

[0014] Based on the digital terrain information and the river system information of the target basin, the original digital elevation data of the target basin is corrected to obtain corrected digital elevation data;

[0015] According to the corrected digital elevation data, the target basin is divided into a plurality of sub-basins to obtain a plurality of sub-basins of the target basin;

[0016] Each sub-basin is determined as a control unit.

[0017] Optionally, the grid division of each control unit to obtain a plurality of configuration units in each control unit includes:

[0018] Obtaining the area of each control unit;

[0019] According to the area of each control unit, each control unit is respectively grid-divided according to a preset grid resolution to obtain a plurality of configuration units in each control unit.

[0020] Optionally, the hydrological simulation analysis of each control unit to determine the water and soil conservation measures to be implemented for each control unit and the first priority order of spatial distribution of the water and soil conservation measures to be implemented for each control unit includes:

[0021] Establishing a hydrological model and performing hydrological simulation analysis of each control unit through the hydrological model;

[0022] determining a surplus and deficit water amount and a surplus and deficit water index of each control unit based on the result of the hydrological simulation analysis of each control unit;

[0023] determining a water and soil conservation measure construction and regulation capacity of each control unit based on the surplus and deficit water amount of each control unit;

[0024] determining a first priority order of the spatial distribution of the water and soil conservation measure for each control unit based on the surplus and deficit water index of each control unit.

[0025] Optionally, the determining of the water and soil conservation measure construction and regulation capacity of each control unit based on the surplus and deficit water amount of each control unit comprises:

[0026] determining a water resource amount of the first type of water resource and a water resource amount of the second type of water resource, and a water demand of the first type of water resource and a water demand of the second type of water resource of the control unit based on the result of the hydrological simulation analysis of the control unit;

[0027] determining a surplus and deficit water amount of the first type of water resource based on the water resource amount of the first type of water resource and the water demand of the first type of water resource;

[0028] determining a surplus and deficit water amount of the second type of water resource based on the water resource amount of the second type of water resource and the water demand of the second type of water resource;

[0029] determining a total surplus and deficit water amount of the control unit based on the surplus and deficit water amount of the first type of water resource and the surplus and deficit water amount of the second type of water resource;

[0030] determining the water and soil conservation measure construction and regulation capacity of the control unit based on the total surplus and deficit water amount of the control unit, and the surplus and deficit water amount of the first type of water resource and the surplus and deficit water amount of the second type of water resource of the control unit.

[0031] Optionally, the determining of the surplus and deficit water index of the control unit comprises:

[0032] respectively acquiring a first surplus and deficit correction coefficient, a second surplus and deficit correction coefficient and a total surplus and deficit correction coefficient;

[0033] determining a surplus and deficit water index of the first type of water resource of the control unit based on the surplus and deficit water amount of the first type of water resource and the first surplus and deficit correction coefficient;

[0034] determining a surplus and deficit water index of the second type of water resource of the control unit based on the surplus and deficit water amount of the second type of water resource and the second surplus and deficit correction coefficient;

[0035] According to the total profit and loss water amount and the total profit and loss correction coefficient, a total profit and loss water index of the control unit is determined.

[0036] Optionally, the first priority order of the spatial distribution of the water and soil conservation measures to be implemented for each control unit is determined according to the profit and loss water index of each control unit, and includes:

[0037] A target water resource type of each control unit is obtained.

[0038] According to the target water resource type of each control unit, a profit and loss water index of each control unit is determined.

[0039] According to the profit and loss water index of each control unit, the first priority order is obtained by sorting from large to small and from upstream to downstream.

[0040] Optionally, the construction area of each water and soil conservation measure to be implemented for each control unit is determined according to the construction storage capacity of the water and soil conservation measure to be implemented by each control unit, and in combination with the input-output ratio evaluation index and the suitability evaluation index of each water and soil conservation measure.

[0041] According to the construction storage capacity of the water and soil conservation measure to be implemented by each control unit, the input-output ratio evaluation index and the suitability evaluation index of each water and soil conservation measure to be implemented by the control unit, and in combination with the theoretical construction storage capacity per unit area of the water and soil conservation measure, a multi-objective optimization allocation model is established.

[0042] Based on the multi-objective optimization allocation model, the construction area of each water and soil conservation measure to be implemented by the control unit is calculated by the following formula:

[0043]

[0044] wherein, represents the optimization objective function of the construction area of the water and soil conservation measure of the control unit . represents the construction area of the i-th water and soil conservation measure . represents the theoretical construction storage capacity per unit area of the i-th water and soil conservation measure . represents the maximum suitability of the i-th water and soil conservation measure of the control unit . represents the maximum construction input-output ratio of the i-th water and soil conservation measure of the control unit . represents the i-th water and soil conservation measure of the control unit . Representing control unit The first The water and soil conservation measures construction profit and loss water index minimum.

[0045] Optionally, the input-output ratio evaluation index of the water and soil conservation measures is determined by the following method:

[0046] Obtain the construction investment standard and the theoretical regulation and storage capacity of the water and soil conservation measures;

[0047] According to the construction investment standard and the theoretical regulation and storage capacity of the water and soil conservation measures, the input-output ratio evaluation index of the water and soil conservation measures is calculated by the following formula:

[0048]

[0049] Among them, The input-output ratio evaluation index of the first The water and soil conservation measures; The construction investment per unit area of the first The water and soil conservation measures; The theoretical construction regulation and storage capacity per unit area of the first The water and soil conservation measures.

[0050] Optionally, the theoretical regulation and storage capacity of the water and soil conservation measures is determined by the following method:

[0051] According to the technical means and regulation characteristics of the water and soil conservation measures, the water and soil conservation measures are classified;

[0052] According to the classification result, the keywords corresponding to the water and soil conservation measures are determined, and the target literature is obtained by literature retrieval through the keywords;

[0053] The experimental data corresponding to the water and soil conservation measures in the target literature are picked up by Get-data tool, and the experimental data are analyzed by Meta-analysis tool to obtain the effect value of the water and soil conservation measures;

[0054] The effect value is data transformed to obtain the theoretical regulation and storage capacity.

[0055] Optionally, the suitability evaluation index of the water and soil conservation measures is determined by the following method:

[0056] Obtain the construction standard limited condition of the water and soil conservation measures, and the number of environmental factors, the environmental factors representing the environmental factors affecting the regulation and storage capacity of the water and soil conservation measures;

[0057] Based on the aforementioned construction standards and the number of environmental factors, the suitability evaluation index for the soil and water conservation measures is calculated using the following formula:

[0058]

[0059] in, Indicates the first Suitability evaluation indicators for soil and water conservation measures; Indicates the number of environmental factors; Indicates the first The construction standard limiting conditions corresponding to the first item of soil and water conservation measures Suitability index of each environmental factor; Indicates the first The first water and soil conservation measure construction standard limit condition corresponding to the first The influence weights of each environmental factor.

[0060] Optionally, the comprehensive suitability evaluation index is determined by the following method:

[0061] The suitability evaluation index of each of the soil and water conservation measures is adapted to any one of the configuration units to obtain the suitability evaluation index of implementing each of the soil and water conservation measures for the configuration unit.

[0062] The input-output ratio of each of the soil and water conservation measures is adapted to the configuration unit to obtain the input-output ratio of each of the soil and water conservation measures implemented for the configuration unit.

[0063] Based on the suitability evaluation index for implementing each of the soil and water conservation measures for the configuration unit and the input-output ratio index for implementing each of the soil and water conservation measures for the configuration unit, a comprehensive suitability evaluation index for implementing each of the soil and water conservation measures for the configuration unit is calculated.

[0064] The comprehensive suitability evaluation index is determined by the following formula:

[0065]

[0066] in, Indicates the first configuration unit The comprehensive suitability index of the soil and water conservation measures; Indicates the first configuration unit Suitability index of soil and water conservation measures; Indicates the different configuration units The average suitability index of each soil and water conservation measure; Indicates the first configuration unit The input-output ratio index of soil and water conservation measures; indicates different configuration units The mean of the input-output ratio index of the soil and water conservation measures; indicates the weight.

[0067] Optionally, the soil and water conservation measures to be implemented for each configuration unit in each control unit are determined according to the comprehensive suitability evaluation index, and a second priority order of the spatial distribution of the soil and water conservation measures to be implemented for each configuration unit is determined according to the comprehensive suitability evaluation index.

[0068] The soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit is determined as the soil and water conservation measure to be implemented for the configuration unit according to the comprehensive suitability evaluation index of the soil and water conservation measure implemented in each configuration unit.

[0069] The soil and water conservation measures to be implemented for each configuration unit are sorted in descending order and from upstream to downstream according to the comprehensive suitability evaluation index of the soil and water conservation measures to be implemented for each configuration unit, to obtain the second priority order.

[0070] Optionally, the number of configuration units to be distributed in each control unit for each soil and water conservation measure to be implemented in each control unit is determined in combination with the construction area of the soil and water conservation measure to be implemented in each control unit.

[0071] The construction area of each soil and water conservation measure to be implemented in each control unit is obtained.

[0072] The number of configuration units to be distributed in the control unit for the soil and water conservation measure is calculated according to the construction area of the soil and water conservation measure and the grid resolution of the configuration unit.

[0073] In a second aspect, the embodiment of the present application provides a soil and water conservation optimization configuration and spatial distribution technical system, and the system comprises:

[0074] A first determination module is configured to determine a plurality of control units based on digital terrain information and river system information of a target river basin, and perform grid division on each control unit to obtain a plurality of configuration units in each control unit.

[0075] A second determination module is configured to perform hydrological simulation analysis on each control unit to determine a construction regulation and storage capacity of a soil and water conservation measure to be implemented for each control unit, and a first priority order of the spatial distribution of the soil and water conservation measure to be implemented for each control unit.

[0076] ​a third determining module, configured to determine a construction area of each of the soil and water conservation measures to be implemented for each of the control units according to a construction regulation capacity of each of the soil and water conservation measures to be implemented for each of the control units, and in combination with input-output ratio evaluation indexes and suitability evaluation indexes of the soil and water conservation measures;

[0077] a fourth determining module, configured to establish a comprehensive suitability evaluation index, determine the soil and water conservation measures to be implemented for each of the configuration units in each of the control units according to the comprehensive suitability evaluation index, and determine a second priority order of spatial distribution of the soil and water conservation measures to be implemented for each of the configuration units according to the comprehensive suitability evaluation index;

[0078] a fifth determining module, configured to determine a number of the configuration units to be distributed in each of the control units for each of the soil and water conservation measures in combination with the construction area of each of the soil and water conservation measures to be implemented for each of the control units;

[0079] a spatial distribution module, configured to perform spatial distribution of the soil and water conservation measures for the target basin according to the first priority order, the second priority order, the soil and water conservation measures to be implemented for each of the configuration units, and the number of the configuration units to be distributed for each of the soil and water conservation measures.

[0080] Optionally, the digital terrain information and the river system information of the target basin are used to determine a plurality of control units, and the first determining module comprises:

[0081] a correcting submodule, configured to correct original digital elevation data of the target basin based on the digital terrain information and the river system information of the target basin to obtain modified digital elevation data;

[0082] a sub-basin division submodule, configured to divide the target basin into a plurality of sub-basins according to the modified digital elevation data;

[0083] a first determining submodule, configured to determine each of the sub-basins as a control unit.

[0084] Optionally, the first determining module comprises:

[0085] a first obtaining submodule, configured to obtain an area of each of the control units;

[0086] a grid division sub-module, configured to divide each of the control units according to a preset grid resolution based on an area of each of the control units, to obtain a plurality of configuration units in each of the control units.

[0087] Optionally, the hydrological simulation analysis on each of the control units is performed to determine a water and soil conservation measure to be implemented in each of the control units, a construction and regulation capacity of the water and soil conservation measure, and a first priority order of spatial distribution of the water and soil conservation measure in each of the control units, and the second determining module comprises:

[0088] a hydrological simulation analysis sub-module, configured to establish a hydrological model and perform hydrological simulation analysis on each of the control units by using the hydrological model;

[0089] a second determining sub-module, configured to determine a profit and loss water amount and a profit and loss water index of each of the control units based on a result of the hydrological simulation analysis on each of the control units;

[0090] a third determining sub-module, configured to determine, according to the profit and loss water amount of each of the control units, the water and soil conservation measure to be implemented in each of the control units, the construction and regulation capacity of the water and soil conservation measure;

[0091] a fourth determining sub-module, configured to determine, according to the profit and loss water index of each of the control units, the first priority order of spatial distribution of the water and soil conservation measure in each of the control units.

[0092] Optionally, the third determining sub-module configured to determine, according to the profit and loss water amount of each of the control units, the water and soil conservation measure to be implemented in each of the control units, the construction and regulation capacity of the water and soil conservation measure, comprises:

[0093] a first determining sub-unit, configured to determine, according to a result of the hydrological simulation analysis on any one of the control units, a water resource amount of a first type of water resource and a water resource amount of a second type of water resource, and a water demand of the first type of water resource and a water demand of the second type of water resource;

[0094] a second determining sub-unit, configured to determine, according to the water resource amount of the first type of water resource and the water demand of the first type of water resource, a profit and loss water amount of the first type of water resource;

[0095] a third determining sub-unit, configured to determine, according to the water resource amount of the second type of water resource and the water demand of the second type of water resource, a profit and loss water amount of the second type of water resource;

[0096] a fourth determining sub-unit, configured to determine, according to the profit and loss water amount of the first type of water resource and the profit and loss water amount of the second type of water resource, a total profit and loss water amount of the control unit;

[0097] a fifth determining sub-unit, configured to determine a water and soil conservation measure to be implemented by the control unit according to the total water balance of any one of the control units, and the water balance of the first type of water resource and the water balance of the second type of water resource of the control unit.

[0098] Optionally, the water balance index of the control unit is determined, and the second determining sub-module comprises:

[0099] a first obtaining sub-unit, configured to respectively obtain a first water balance correction coefficient, a second water balance correction coefficient and a total water balance correction coefficient;

[0100] a sixth determining sub-unit, configured to determine the water balance index of the first type of water resource of the control unit according to the water balance of the first type of water resource and the first water balance correction coefficient;

[0101] a seventh determining sub-unit, configured to determine the water balance index of the second type of water resource of the control unit according to the water balance of the second type of water resource and the second water balance correction coefficient;

[0102] an eighth determining sub-unit, configured to determine the total water balance index of the control unit according to the total water balance and the total water balance correction coefficient.

[0103] Optionally, the first priority order of the spatial distribution of the water and soil conservation measure to be implemented by each of the control units is determined according to the water balance index of each of the control units, and the fourth determining sub-module comprises:

[0104] a second obtaining sub-unit, configured to obtain a target water resource type of each of the control units;

[0105] a water balance index determining sub-unit, configured to determine the water balance index of each of the control units according to the target water resource type of each of the control units;

[0106] a sorting sub-unit, configured to sort each of the control units in descending order or from upstream to downstream according to the water balance index of each of the control units, to obtain the first priority order.

[0107] Optionally, the construction area of each of the water and soil conservation measures to be implemented by each of the control units is determined according to the water and soil conservation measure to be implemented by each of the control units and the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures, and the third determining module comprises:

[0108] A submodule is established to build a multi-objective optimization configuration model based on the proposed water and soil conservation capacity to be constructed by any of the control units, the input-output ratio evaluation index and suitability evaluation index of each of the proposed water and soil conservation measures, and in combination with the theoretical construction capacity per unit area of ​​the water and soil conservation measures.

[0109] The first calculation submodule is used to calculate the proposed construction area of ​​each soil and water conservation measure to be implemented by the control unit based on the multi-objective optimization configuration model using the following formula:

[0110]

[0111] in, Indicates control unit The objective function for optimizing the proposed construction area of ​​soil and water conservation measures; Indicates the first The proposed construction area for soil and water conservation measures; Indicates the first The theoretical water storage capacity per unit area of ​​each soil and water conservation measure; Indicates control unit The The suitability of the soil and water conservation measures is the highest. Indicates control unit The The water and soil conservation measures have the highest input-output ratio. Indicates control unit The The water and soil conservation measures have the lowest profit and loss index.

[0112] Optionally, the input-output ratio evaluation index of the soil and water conservation measures is determined through the following system:

[0113] The second acquisition submodule is used to acquire the construction investment standards and theoretical water storage capacity of the soil and water conservation measures;

[0114] The second calculation submodule is used to calculate the input-output ratio evaluation index of the soil and water conservation measures based on the construction investment standards and the theoretical water storage capacity, using the following formula:

[0115]

[0116] in, Indicates the first The input-output ratio evaluation index for soil and water conservation measures; Indicates the first The construction investment per unit area for each soil and water conservation measure; Indicates the first The theoretical construction regulation and storage capacity of the water and soil conservation measure per unit area.

[0117] Optionally, the theoretical regulation and storage capacity of the water and soil conservation measure is determined by the following system:

[0118] The classification submodule is configured to classify the water and soil conservation measure according to technical means and regulation characteristics of the water and soil conservation measure.

[0119] The retrieval submodule is configured to determine the keywords corresponding to the water and soil conservation measure according to the classification result, and perform literature retrieval through the keywords to obtain target literature.

[0120] The effect value determination submodule is configured to pick up experimental data corresponding to the water and soil conservation measure in the target literature through a Get-data tool, and analyze the experimental data through a Meta-analysis tool to obtain an effect value of the water and soil conservation measure.

[0121] The data transformation submodule is configured to transform the effect value to obtain the theoretical regulation and storage capacity.

[0122] Optionally, the suitability evaluation index of the water and soil conservation measure is determined by the following system:

[0123] The third acquisition submodule is configured to acquire construction standard limiting conditions of the water and soil conservation measure, and the number of environmental factors, the environmental factors representing environmental factors affecting the regulation and storage capacity of the water and soil conservation measure.

[0124] The third calculation submodule is configured to calculate the suitability evaluation index of the water and soil conservation measure according to the construction standard limiting conditions and the number of environmental factors through the following formula:

[0125]

[0126] wherein, represents the suitability evaluation index of the i-th water and soil conservation measure; represents the number of environmental factors; represents the suitability index of the j-th environmental factor corresponding to the i-th construction standard limiting condition of the water and soil conservation measure; represents the i-th construction standard limiting condition of the water and soil conservation measure; represents the j-th environmental factor corresponding to the i-th construction standard limiting condition of the water and soil conservation measure; represents the influence weight of the j-th environmental factor corresponding to the i-th construction standard limiting condition of the water and soil conservation measure. Optionally, the comprehensive suitability evaluation index is determined by the following system:

[0127]

[0128] ​​​The first adapting sub-module is configured to adapt the suitability evaluation indexes of each of the soil and water conservation measures to any of the configuration units, to obtain the suitability evaluation indexes of the soil and water conservation measures implemented for the configuration unit;

[0129] The second adapting sub-module is configured to adapt the input-output ratio indexes of each of the soil and water conservation measures to the configuration unit, to obtain the input-output ratio indexes of the soil and water conservation measures implemented for the configuration unit;

[0130] The fourth calculating sub-module is configured to calculate the comprehensive suitability evaluation indexes of the soil and water conservation measures implemented for the configuration unit according to the suitability evaluation indexes of the soil and water conservation measures implemented for the configuration unit and the input-output ratio indexes of the soil and water conservation measures implemented for the configuration unit.

[0131] The comprehensive suitability evaluation indexes are determined by the following formula:

[0132]

[0133] wherein, represents the comprehensive suitability index of the i-th soil and water conservation measure on the configuration unit; represents the suitability index of the i-th soil and water conservation measure on the configuration unit; represents the mean value of the suitability indexes of the i-th soil and water conservation measure on different configuration units; represents the input-output ratio index of the i-th soil and water conservation measure on the configuration unit; represents the mean value of the input-output ratio indexes of the i-th soil and water conservation measure on different configuration units; represents the weight. represents the weight.

[0134] Optionally, according to the comprehensive suitability evaluation indexes, the fourth determining module is configured to determine the soil and water conservation measures to be implemented for each of the configuration units in each of the control units, and determine the second priority order of the spatial distribution of the soil and water conservation measures to be implemented for each of the configuration units according to the comprehensive suitability evaluation indexes.

[0135] The fifth determining sub-module is configured to determine, according to the comprehensive suitability evaluation indexes of each of the soil and water conservation measures implemented for any of the configuration units, the soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit as the soil and water conservation measure to be implemented for the configuration unit.

[0136] ​​​​​The sorting sub-module sorts the comprehensive suitability evaluation indexes of the soil and water conservation measures to be implemented by each configuration unit in descending order from large to small and from upstream to downstream, to obtain the second priority sequence.

[0137] Optionally, in combination with the construction area of each soil and water conservation measure to be implemented for each control unit, the fifth determining module determines the number of configuration units to be distributed in each control unit for each soil and water conservation measure.

[0138] The fourth obtaining sub-module is configured to obtain the construction area of each soil and water conservation measure to be implemented for any control unit.

[0139] The fifth calculating sub-module is configured to calculate the number of configuration units to be distributed in the control unit for any soil and water conservation measure according to the construction area of the soil and water conservation measure and the grid resolution of the configuration unit.

[0140] In a third aspect, the embodiment of the present application provides a computer readable storage medium, which stores a computer program or computer instructions, and the computer program or computer instructions are executed by a processor to implement the soil and water conservation optimization configuration and spatial distribution technical method according to the first aspect of the present application.

[0141] The present application has the following beneficial effects:

[0142] The application provides a water and soil conservation optimal configuration and spatial distribution technical method, which comprises the following steps: determining a plurality of control units based on digital terrain information and river system information of a target basin, and performing grid dissection on each control unit to obtain a plurality of configuration units in each control unit; performing hydrological simulation analysis on each control unit to determine a water and soil conservation measure to be implemented for each control unit, a construction and regulation capacity of the water and soil conservation measure to be implemented, and a first priority order of spatial distribution of the water and soil conservation measure to be implemented for each control unit; determining a construction area of each water and soil conservation measure to be implemented for each control unit according to the construction and regulation capacity of the water and soil conservation measure to be implemented in combination with input-output ratio evaluation indexes and suitability evaluation indexes of the water and soil conservation measures; establishing a comprehensive suitability evaluation index, determining a water and soil conservation measure to be implemented for each configuration unit in each control unit according to the comprehensive suitability evaluation index, and determining a second priority order of spatial distribution of the water and soil conservation measure to be implemented for each configuration unit according to the comprehensive suitability evaluation index; determining the number of configuration units to be distributed for each water and soil conservation measure in each control unit in combination with the construction area of each water and soil conservation measure to be implemented for each control unit; and performing spatial distribution of the water and soil conservation measures for the target basin according to the first priority order, the second priority order, the water and soil conservation measure to be implemented for each configuration unit and the number of configuration units to be distributed for each water and soil conservation measure.

[0143] The application determines a plurality of control units based on digital terrain information and river system information of a target basin, and performs grid dissection on each control unit to obtain a plurality of configuration units; performs hydrological simulation analysis on each control unit to determine a water and soil conservation measure to be implemented, a construction and regulation capacity and a first priority order of spatial distribution; determines a construction area of each water and soil conservation measure in combination with input-output ratio and suitability evaluation indexes according to the construction and regulation capacity; establishes a comprehensive suitability evaluation index to determine a water and soil conservation measure to be implemented for each configuration unit and a second priority order of spatial distribution; determines the number of configuration units to be distributed for each measure in each control unit in combination with the construction area; and finally performs spatial distribution of the water and soil conservation measures for the target basin according to the first and second priority orders, the measure to be implemented and the number of configuration units to be distributed, so that the spatial planning of the water and soil conservation measures and the layout of the water and soil conservation measures to be implemented in each region in the target basin are more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0144] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0145] Figure 1 This is a flowchart illustrating the steps of a water and soil conservation optimization configuration and spatial distribution technology method provided in an embodiment of this application;

[0146] Figure 2 This is a schematic diagram of the division of a target watershed control unit and a configuration unit provided in an embodiment of this application;

[0147] Figure 3 This is a schematic diagram of the spatial layout of soil and water conservation measures in a target watershed, provided in an embodiment of this application.

[0148] Figure 4 This is a schematic diagram of a soil and water conservation optimization configuration and spatial distribution technology system provided in an embodiment of this application. Detailed Implementation

[0149] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0150] In a first aspect, this application provides a method for optimizing soil and water conservation configuration and spatial distribution, such as... Figure 1 As shown, the method includes:

[0151] Step S101: Based on the digital terrain information and river system information of the target watershed, multiple control units are determined, and each control unit is meshed to obtain multiple configuration units within each control unit;

[0152] Specifically, you can refer to Figure 2 The diagram illustrates a target watershed control unit and configuration unit partitioning. First, digital terrain and river system information of the target watershed are acquired; this information describes the topographic features and river distribution within the watershed. Based on this information, the entire target watershed is divided into multiple control units, each representing a portion of the watershed. Then, each control unit undergoes further fine-grained mesh partitioning, further dividing each control unit into multiple configuration units.

[0153] In a preferred embodiment, the digital terrain information and river system information of the target watershed are used to determine a plurality of control units, comprising:

[0154] Based on the digital terrain information and river system information of the target watershed, the original digital elevation data of the target watershed is corrected to obtain corrected digital elevation data;

[0155] According to the corrected digital elevation data, the target watershed is divided into a plurality of sub-watersheds;

[0156] Each of the sub-watersheds is determined as a control unit.

[0157] Specifically, in this embodiment, first, the digital terrain information and river system information of the target watershed can be obtained by high-precision remote sensing images such as high-precision satellites, combined with high-precision map data. The original digital elevation data of the target watershed is corrected by the digital terrain information and river system information of the target watershed to obtain more accurate corrected digital elevation data. In practical applications, the original digital elevation data can be corrected by lowering the elevation.

[0158] Further, according to the corrected digital elevation data, the size of the target watershed and the complexity of the river system are analyzed, and the intersection points of the sub-watersheds are used as division points to divide the target watershed into sub-watersheds. The boundary range of each sub-watershed can also be defined in combination with the administrative boundary information of the target watershed. Finally, each sub-watershed is determined as a control unit.

[0159] In a preferred embodiment, the grid division of each control unit is performed to obtain a plurality of configuration units within each control unit, comprising:

[0160] Obtain the area of each control unit;

[0161] According to the area of each control unit, the grid division of each control unit is performed according to the preset grid resolution to obtain a plurality of configuration units within each control unit.

[0162] Specifically, in this embodiment, first, the area of each control unit is obtained. Then, according to the area of each control unit, the grid division is performed according to the preset grid resolution. By this method, each control unit can be divided into a plurality of configuration units, thereby providing a basis for the subsequent implementation of soil and water conservation measures. Such grid division not only helps to fine management and implementation of soil and water conservation measures, but also improves the accuracy and effectiveness of the implementation of soil and water conservation measures.

[0163] In step S102, hydrological simulation analysis is performed on each control unit to determine the water and soil conservation measures to be implemented for each control unit, the water storage capacity to be constructed for each control unit, and the first priority order of the spatial distribution of the water and soil conservation measures for each control unit.

[0164] Specifically, in this embodiment, a hydrological model is first established, and then hydrological simulation analysis is performed on each control unit by using the hydrological model to determine the water and soil conservation measures to be implemented for each control unit, the water storage capacity to be constructed for each control unit, and the first priority order of the spatial distribution of the water and soil conservation measures for each control unit.

[0165] In a preferred embodiment, the hydrological simulation analysis performed on each control unit to determine the water and soil conservation measures to be implemented for each control unit, the water storage capacity to be constructed for each control unit, and the first priority order of the spatial distribution of the water and soil conservation measures for each control unit includes:

[0166] A hydrological model is established, and hydrological simulation analysis is performed on each control unit by using the hydrological model;

[0167] Based on the results of the hydrological simulation analysis of each control unit, the water surplus / deficit amount and the water surplus / deficit index of each control unit are determined;

[0168] According to the water surplus / deficit amount of each control unit, the water and soil conservation measures to be implemented for each control unit are determined;

[0169] According to the water surplus / deficit index of each control unit, the first priority order of the spatial distribution of the water and soil conservation measures for each control unit is determined.

[0170] Specifically, in this embodiment, first, a hydrological model is established and hydrological simulation analysis is performed on each control unit by using the model. This process includes simulating the hydrological processes such as precipitation, runoff, and evaporation in the watershed to obtain the hydrological change data in each control unit.

[0171] Further, based on the results of the hydrological simulation analysis of each control unit, the water surplus / deficit amount and the water surplus / deficit index of each control unit are calculated. In practical applications, the water surplus / deficit amount is calculated by balancing the supply and demand of water resources in the control unit. The water surplus / deficit index is calculated based on the water surplus / deficit amount, combined with the actual water demand, ecological water demand, and the spatial and temporal distribution characteristics of water resources in each control unit, reflecting the water resource surplus / deficit situation of the control unit.

[0172] Further, according to the surplus and deficit water amount of each control unit, a construction regulation capacity of the water and soil conservation measure to be implemented in each control unit is determined. In practical application, the construction regulation capacity of the water and soil conservation measure to be implemented in each control unit can be calculated by analyzing the influence of different water and soil conservation measures on water resource regulation and combining the surplus and deficit water amount of the control unit.

[0173] Further, according to the surplus and deficit water index of each control unit, a first priority order of spatial distribution of the water and soil conservation measure in each control unit is determined. Specifically, the control unit with a higher surplus and deficit water index is preferentially included in the implementation range of the water and soil conservation measure, and a spatial distribution scheme of the water and soil conservation measure is formulated in combination with the upstream and downstream relationship between the control units, so as to ensure the maximization of the water resource regulation capacity and ecological environment benefit in the whole basin.

[0174] In the embodiment, the construction demand and priority order of the water and soil conservation measure of each control unit are scientifically determined, the spatial layout of the water and soil conservation measure is optimized, and the utilization efficiency of water resources and the protection level of ecological environment in the basin are improved.

[0175] In a preferred embodiment, the construction regulation capacity of the water and soil conservation measure to be implemented in each control unit is determined according to the surplus and deficit water amount of each control unit, and includes:

[0176] According to the hydrological simulation analysis result of any one of the control units, the water resource amount of the first type of water resources and the water resource amount of the second type of water resources of the control unit, and the water demand of the first type of water resources and the water demand of the second type of water resources are determined;

[0177] According to the water resource amount of the first type of water resources and the water demand of the first type of water resources, the surplus and deficit water amount of the first type of water resources is determined;

[0178] According to the water resource amount of the second type of water resources and the water demand of the second type of water resources, the surplus and deficit water amount of the second type of water resources is determined;

[0179] According to the surplus and deficit water amount of the first type of water resources and the surplus and deficit water amount of the second type of water resources, the total surplus and deficit water amount of the control unit is determined;

[0180] According to the total surplus and deficit water amount of any one of the control units, and the surplus and deficit water amount of the first type of water resources and the surplus and deficit water amount of the second type of water resources of the control unit, the construction regulation capacity of the water and soil conservation measure to be implemented in the control unit is determined.

[0181] Specifically, in the embodiment, taking any one of the control units in the target basin as an example, first, based on the hydrological simulation analysis result of any one control unit, the water resource quantity of the first type of water resources and the water resource quantity of the second type of water resources, and the water demand of the first type of water resources and the water demand of the second type of water resources of the control unit are determined. Through this process, the supply and demand status of different water resources in the control unit can be determined. In practical application, the first type of water resources is blue water resources, and the second type of water resources is green water resources, wherein the blue water resources are mainly used to meet artificial water demand, and the green water resources are mainly used to meet ecological water demand of agriculture, forestry and grass.

[0182] In the embodiment, the water resource quantity of the first type of water resources and the water resource quantity of the second type of water resources are calculated by the following formula (1) and formula (2) respectively:

[0183] (1)

[0184] (2)

[0185] Among them, represents the first type of water resources; represents the second type of water resources; represents surface runoff; represents interflow; represents snowmelt runoff; represents groundwater runoff; represents actual evaporation; represents soil water storage change.

[0186] Further, according to the water resource quantity and water demand of the first type of water resources, the profit and loss water quantity of the first type of water resources, that is, the difference between the water resource quantity and the demand quantity of the first type of water resources, is calculated. Similarly, according to the water resource quantity and water demand of the second type of water resources, the profit and loss water quantity of the second type of water resources is calculated.

[0187] In the embodiment, the profit and loss water quantity of the first type of water resources and the profit and loss water quantity of the second type of water resources are calculated by the following formula (3) and formula (4) respectively:

[0188] (3)

[0189] (4)

[0190] Among them, represents the profit and loss water quantity of the first type of water resources; represents the profit and loss water quantity of the second type of water resources; represents the water demand of the first type of water resources; represents the water demand of the second type of water resources.

[0191] Further, the total profit and loss water amount of the control unit is determined by comprehensively considering the profit and loss water amount of the first type of water resources and the second type of water resources, and is calculated by the following formula (5):

[0192] (5)

[0193] wherein, represents the total profit and loss water amount of the control unit.

[0194] Further, the water-soil conservation measure construction and regulation and storage capacity to be implemented by the control unit is determined according to the total profit and loss water amount of the control unit, and the profit and loss water amount of the first type of water resources and the profit and loss water amount of the second type of water resources in the control unit, with the goal of maximizing the balance between supply and demand, and is specifically calculated by the following formula (6):

[0195] (6)

[0196] wherein, represents the water-soil conservation measure construction and regulation and storage capacity.

[0197] In a preferred embodiment, the profit and loss water index of the control unit is determined by:

[0198] respectively acquiring a first profit and loss correction coefficient, a second profit and loss correction coefficient, and a total profit and loss correction coefficient;

[0199] determining the profit and loss water index of the first type of water resources of the control unit according to the profit and loss water amount of the first type of water resources and the first profit and loss correction coefficient;

[0200] determining the profit and loss water index of the second type of water resources of the control unit according to the profit and loss water amount of the second type of water resources and the second profit and loss correction coefficient;

[0201] determining the total profit and loss water index of the control unit according to the total profit and loss water amount and the total profit and loss correction coefficient.

[0202] Specifically, in this embodiment, first, a first profit and loss correction coefficient, a second profit and loss correction coefficient, and a total profit and loss correction coefficient are respectively acquired. The first profit and loss correction coefficient is applicable to the first type of water resources, the second profit and loss correction coefficient is applicable to the second type of water resources, and the total profit and loss correction coefficient is used to comprehensively evaluate the water resource conditions of the entire control unit.

[0203] Further, the profit and loss water index of the first type of water resources of the control unit is determined according to the profit and loss water amount of the first type of water resources and the first profit and loss correction coefficient. The profit and loss water index of the first type of water resources is shown in the following formula (7):

[0204] (7)

[0205] wherein, represents the profit and loss water index of the first type of water resources; represents the first profit and loss correction coefficient.

[0206] Further, the profit and loss water index of the second type of water resources of the control unit is determined according to the profit and loss water amount of the second type of water resources and the second profit and loss correction coefficient. The profit and loss water index of the second type of water resources is shown in the following formula (8):

[0207] (8)

[0208] wherein, represents the profit and loss water index of the second type of water resources; represents the second profit and loss correction coefficient.

[0209] Further, the total profit and loss water index of the control unit is determined according to the total profit and loss water amount and the total profit and loss correction coefficient. The total profit and loss water index is shown in the following formula (9):

[0210] (9)

[0211] wherein, represents the total profit and loss water index; represents the total profit and loss correction coefficient.

[0212] In the embodiment, the calculation method of the first profit and loss correction coefficient , the second profit and loss correction coefficient and the total profit and loss correction coefficient is given, and the specific formula is as follows:

[0213] (10)

[0214] wherein, represents the multi-year average water resource amount of the first type of water resources of the control unit in the preset month; represents the multi-year average water demand amount of the first type of water resources of the control unit in the preset month.

[0215] (11)

[0216] wherein, represents the multi-year average water resource amount of the second type of water resources of the control unit in the preset month; represents the multi-year average water demand amount of the second type of water resources of the control unit in the preset month.

[0217] (12)

[0218] In a preferred embodiment, the first priority order of the spatial distribution of the water and soil conservation measures to be implemented for each of the control units is determined according to the profit and loss water index of each of the control units, comprising:

[0219] obtaining the target water resource type of each of the control units;

[0220] determining the profit and loss water index of each of the control units according to the target water resource type of each of the control units;

[0221] sorting according to the profit and loss water index of each of the control units in descending order from upstream to downstream to obtain the first priority order.

[0222] Specifically, in the embodiment, the target water resource type of each control unit is obtained, and the target water resource type can be the first type of water resource or the second type of water resource.

[0223] According to the target water resource type of each control unit, the profit and loss water index of each control unit is determined, and according to the profit and loss water index of each control unit, the order is sorted from large to small from upstream to downstream. First, according to the profit and loss water index of each control unit, the order is sorted from large to small, which determines which control unit has the most serious water resource profit and loss situation and needs to be implemented first. Secondly, in the same level of profit and loss water index, according to the position of the control unit in the basin, the order is sorted from upstream to downstream. In this way, the upstream control unit can be implemented first, so as to have a positive impact on the downstream and achieve a better water resource regulation effect.

[0224] Step S103, according to the water and soil conservation measures to be implemented by each of the control units, the construction regulation and storage capacity is determined, and combined with the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures, the construction area of each of the water and soil conservation measures to be implemented by each of the control units is determined;

[0225] Specifically, in this step, according to the water and soil conservation measures to be implemented by each control unit, the construction regulation and storage capacity is determined, and combined with the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures, a multi-objective optimization configuration model is established. This model comprehensively considers the water and soil conservation measures, the input-output ratio and the suitability evaluation index, and finds the best configuration scheme of each of the water and soil conservation measures through a preset optimization algorithm, which can determine the construction area of each of the water and soil conservation measures to be implemented by each of the control units.

[0226] In a preferred embodiment, the water and soil conservation measures to be implemented according to each of the control units are to construct the regulation and storage capacity, and the proposed construction area of each of the water and soil conservation measures to be implemented for each of the control units is determined in combination with the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures, comprising:

[0227] According to the water and soil conservation measures to be implemented according to any one of the control units, the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures to be implemented by the control unit, and in combination with the theoretical construction regulation and storage capacity per unit area of the water and soil conservation measures, a multi-objective optimization allocation model is established.

[0228] Based on the multi-objective optimization allocation model, the proposed construction area of each of the water and soil conservation measures to be implemented by the control unit is calculated by the following formula:

[0229]

[0230] Among them, represents the optimization objective function of the proposed construction area of the water and soil conservation measures of the control unit . represents the proposed construction area of the th water and soil conservation measure; represents the theoretical construction regulation and storage capacity per unit area of the th water and soil conservation measure; represents the maximum suitability of the th water and soil conservation measure of the control unit . represents the maximum input-output ratio of the th water and soil conservation measure of the control unit . represents the minimum profit and loss water index of the th water and soil conservation measure of the control unit .

[0231] Specifically, in this embodiment, still taking any one of the numerous control units in the target watershed as an example for description, specifically:

[0232] First, according to the water and soil conservation measures to be implemented according to any one of the control units, the input-output ratio evaluation index and the suitability evaluation index of each of the water and soil conservation measures to be implemented by the control unit, and in combination with the theoretical construction regulation and storage capacity per unit area of the water and soil conservation measures, a multi-objective optimization allocation model is established.

[0233] Further, based on the multi-objective optimization configuration model, the proposed construction area of each soil and water conservation measure to be implemented by the control unit is calculated by the following formula (13):

[0234] (13)

[0235] wherein, represents the optimization objective function of the proposed construction area of the soil and water conservation measure of the control unit; represents the proposed construction area of the i-th soil and water conservation measure; represents the theoretical construction regulation and storage capacity per unit area of the i-th soil and water conservation measure; represents the maximum suitability of the i-th soil and water conservation measure of the control unit; represents the maximum construction input-output ratio of the i-th soil and water conservation measure of the control unit; represents the minimum construction profit and loss water index of the i-th soil and water conservation measure of the control unit. In a preferred embodiment, a method for calculating an input-output ratio evaluation index of a soil and water conservation measure is provided, specifically comprising: obtaining the construction investment standard and the theoretical regulation and storage capacity of the soil and water conservation measure; According to the construction investment standard and the theoretical regulation and storage capacity of the soil and water conservation measure, the input-output ratio evaluation index of the soil and water conservation measure is calculated by the following formula:

[0236] wherein,

[0237] represents the input-output ratio evaluation index of the i-th soil and water conservation measure; represents the construction investment per unit area of the i-th soil and water conservation measure;

[0238] represents the theoretical construction regulation and storage capacity per unit area of the i-th soil and water conservation measure.

[0239]

[0240]

[0241] ​​​​​​​​​​​​Specifically, in the embodiment, first, the construction investment standard and the theoretical regulation capacity of the soil and water conservation measures are obtained. In actual application, the construction investment standard refers to the investment cost required in the construction process of each unit area of the soil and water conservation measures. The theoretical regulation capacity is the capacity of each unit area of the soil and water conservation measures to regulate water resources in theory.

[0242] Further, according to the construction investment standard and the theoretical regulation capacity of the soil and water conservation measures, the input-output ratio evaluation index of the soil and water conservation measures is calculated by the following formula (14):

[0243] (14)

[0244] wherein, represents the input-output ratio evaluation index of the i th soil and water conservation measure; represents the construction investment of the i th soil and water conservation measure per unit area; represents the theoretical construction regulation capacity of the i th soil and water conservation measure per unit area. In a preferred embodiment, the theoretical regulation capacity of the soil and water conservation measures is determined by the following method: According to the technical means and the regulation characteristics of the soil and water conservation measures, the soil and water conservation measures are classified;

[0245] According to the classification result, the key words corresponding to the soil and water conservation measures are determined, and the target literature is obtained by literature retrieval through the key words;

[0246] The experimental data corresponding to the soil and water conservation measures in the target literature are picked up by the Get-data tool, and the experimental data are analyzed by the Meta-analysis tool to obtain the effect value of the soil and water conservation measures;

[0247] The effect value is data transformed to obtain the theoretical regulation capacity.

[0248]

[0249]

[0250] ​​​Specifically, in this embodiment, first, the water and soil conservation measures are classified according to the technical means and adjustment characteristics of the water and soil conservation measures. In actual application, the main measure types of the target watershed that have carried out water and soil conservation can be determined through field exploration and research; second, according to the differences in technical means of the water and soil conservation measures, such as vegetation restoration, check dam, terrace construction, deep tillage measures, etc., simple vegetation, engineering, and tillage measures are classified; on this basis, according to the adjustment influence characteristics of different measures on hydrological processes, such as mainly changing the slope topographic structure, intercepting runoff (check dam, terrace), or changing the slope soil, landform, increasing infiltration, and storing runoff (vegetation restoration, deep tillage), etc., the water and soil conservation measures are divided into storage type and interception type.

[0251] Further, according to the classification results, the keywords corresponding to the water and soil conservation measures are determined, and literature retrieval is performed through these keywords. This step obtains existing research results and data about various types of water and soil conservation measures by using relevant scientific and technical literature.

[0252] Further, the experimental data corresponding to the water and soil conservation measures in the target literature are picked up by the Get-data tool. The Get-data tool is a data collection tool that can extract specific experimental data related to the research object from a large number of literature. Then, the experimental data are analyzed by the Meta-analysis tool. The Meta-analysis tool is a statistical analysis tool used for comprehensive analysis of multiple independent research results, so as to obtain more stable and reliable conclusions. In this step, the effect value of the water and soil conservation measures is calculated by systematically analyzing the collected experimental data. Finally, the effect value is data transformed to obtain the theoretical storage capacity. The effect value reflects the effect of the water and soil conservation measures in actual application.

[0253] In a preferred embodiment, the suitability evaluation index of the water and soil conservation measures is determined by the following method:

[0254] The construction standard limiting conditions of the water and soil conservation measures and the number of environmental factors are obtained, and the environmental factors represent environmental factors affecting the storage capacity of the water and soil conservation measures;

[0255] According to the construction standard limiting conditions and the number of environmental factors, the suitability evaluation index of the water and soil conservation measures is calculated by the following formula:

[0256]

[0257] wherein, represents the suitability evaluation index of the i th water and soil conservation measure. the suitability evaluation index of the i th water and soil conservation measure. Indicates the number of environmental factors; Indicates the first The construction standard limiting conditions corresponding to the first item of soil and water conservation measures Suitability index of each environmental factor; Indicates the first The first water and soil conservation measure construction standard limit condition corresponding to the first The influence weights of each environmental factor.

[0258] Specifically, this embodiment provides a method for calculating the suitability evaluation index of soil and water conservation measures, as follows:

[0259] First, obtain the construction standard constraints for soil and water conservation measures. In practical applications, the construction standard constraints for soil and water conservation measures may include land use type, slope, soil depth, etc., as shown in Table 1 below:

[0260]

[0261] Table 1

[0262] Furthermore, the number of environmental factors is determined. Environmental factors refer to the number of environmental factors that affect the water storage capacity of soil and water conservation measures. Common environmental factors may include rainfall, soil type, topographic slope, and vegetation cover.

[0263] Furthermore, based on the construction standard limitations and the number of environmental factors, the suitability evaluation index of the soil and water conservation measures is calculated using the following formula (15):

[0264] (15)

[0265] in, Indicates the first Suitability evaluation indicators for soil and water conservation measures; Indicates the number of environmental factors; Indicates the first The construction standard limiting conditions corresponding to the first item of soil and water conservation measures Suitability index of each environmental factor; Indicates the first The first water and soil conservation measure construction standard limit condition corresponding to the first The influence weights of each environmental factor.

[0266] Step S104: Establish a comprehensive suitability evaluation index, determine the proposed soil and water conservation measures for each configuration unit within each control unit based on the comprehensive suitability evaluation index, and determine the second priority order of the spatial distribution of the proposed soil and water conservation measures for each configuration unit based on the comprehensive suitability evaluation index.

[0267] Specifically, in this step, a comprehensive suitability evaluation index is established, and based on the comprehensive suitability evaluation index, the proposed soil and water conservation measures for each configuration unit within each control unit are determined. Furthermore, based on the comprehensive suitability evaluation index, the second priority order of the spatial distribution of the proposed soil and water conservation measures for each configuration unit is determined.

[0268] In a preferred embodiment, the comprehensive suitability evaluation index is determined by the following method:

[0269] The suitability evaluation index of each of the soil and water conservation measures is adapted to any one of the configuration units to obtain the suitability evaluation index of implementing each of the soil and water conservation measures for the configuration unit.

[0270] The input-output ratio of each of the soil and water conservation measures is adapted to the configuration unit to obtain the input-output ratio of each of the soil and water conservation measures implemented for the configuration unit.

[0271] Based on the suitability evaluation index for implementing each of the soil and water conservation measures for the configuration unit and the input-output ratio index for implementing each of the soil and water conservation measures for the configuration unit, a comprehensive suitability evaluation index for implementing each of the soil and water conservation measures for the configuration unit is calculated.

[0272] The comprehensive suitability evaluation index is determined by the following formula:

[0273]

[0274] in, Indicates the first configuration unit The comprehensive suitability index of the soil and water conservation measures; Indicates the first configuration unit Suitability index of soil and water conservation measures; Indicates the different configuration units The average suitability index of each soil and water conservation measure; Indicates the first configuration unit The input-output ratio index of soil and water conservation measures; Indicates the different configuration units The average input-output ratio index of soil and water conservation measures; , indicates the weight.

[0275] Specifically, in the embodiment, a method for determining a comprehensive suitability evaluation index of soil and water conservation measures is provided, in particular:

[0276] First, the suitability evaluation index of each soil and water conservation measure is adapted to each configuration unit. The suitability evaluation index is calculated based on environmental factors and construction standard limitation conditions, and it reflects the adaptability of each soil and water conservation measure in a specific environment. By adapting these indexes to specific configuration units, the applicability of each soil and water conservation measure in the configuration unit can be evaluated.

[0277] Further, the input-output ratio index of each soil and water conservation measure is adapted to the configuration unit. The input-output ratio index is calculated based on the construction investment standard and theoretical storage capacity of each soil and water conservation measure, and it reflects the economic benefit of each measure. By adapting these indexes to the configuration unit, the economic feasibility of each measure in the unit can be evaluated.

[0278] Finally, by combining the above two indexes, the comprehensive suitability evaluation index of each soil and water conservation measure for the configuration unit is calculated based on the suitability evaluation index and the input-output ratio index of each soil and water conservation measure for the configuration unit. This index takes into account the environmental adaptability and economic benefit of soil and water conservation measures, and provides a scientific basis for selecting the optimal soil and water conservation measure for the configuration unit.

[0279] Among them, the comprehensive suitability evaluation index is determined by the following formula (16):

[0280] (16)

[0281] Among them, indicates the comprehensive suitability index of the i-th soil and water conservation measure on the configuration unit; indicates the suitability index of the i-th soil and water conservation measure on the configuration unit; indicates the mean suitability index of the i-th soil and water conservation measure in different configuration units; indicates the input-output ratio index of the i-th soil and water conservation measure on the configuration unit; indicates the mean input-output ratio index of the i-th soil and water conservation measure in different configuration units; , indicates the weight. indicates the weight.

[0282] ​​​​In a preferred embodiment, the second priority order of the spatial distribution of the soil and water conservation measures to be implemented for each of the configuration units in the control unit is determined according to the comprehensive suitability evaluation index of the soil and water conservation measures to be implemented for each of the configuration units, comprising:

[0283] According to the comprehensive suitability evaluation index of the soil and water conservation measures implemented in each of the configuration units, the soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit is determined as the soil and water conservation measure to be implemented in the configuration unit.

[0284] The comprehensive suitability evaluation index of the soil and water conservation measures to be implemented in each of the configuration units is sorted in descending order from upstream to downstream to obtain the second priority order.

[0285] Specifically, in this embodiment, first, according to the comprehensive suitability evaluation index of each soil and water conservation measure implemented in each configuration unit, the soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit is selected as the soil and water conservation measure to be implemented in the configuration unit. The comprehensive suitability evaluation index is an evaluation index that comprehensively considers the suitability and input-output ratio of each soil and water conservation measure, which reflects the comprehensive applicability of the soil and water conservation measure under specific environmental and economic conditions.

[0286] Further, the comprehensive suitability evaluation index of the soil and water conservation measures to be implemented in each configuration unit is sorted. The specific sorting method is to sort in descending order from upstream to downstream. This means that the measures with higher comprehensive suitability evaluation index are considered first and are implemented in the upstream configuration unit first, and then gradually extended downstream. This sorting method not only considers the comprehensive benefits of each soil and water conservation measure, but also ensures the reasonable layout and continuity of the soil and water conservation measures in space.

[0287] In a preferred embodiment, the number of configuration units in each of the control units for the distribution of each of the soil and water conservation measures is determined in combination with the planned construction area of each of the soil and water conservation measures corresponding to each of the control units, comprising:

[0288] The planned construction area of each of the soil and water conservation measures corresponding to each of the control units is obtained.

[0289] According to the planned construction area of each of the soil and water conservation measures and the grid resolution of the configuration unit, the number of configuration units for the distribution of the soil and water conservation measure in the control unit is calculated.

[0290] Specifically, in this embodiment, first, the construction area of each soil and water conservation measure corresponding to each control unit is obtained. This area represents the total area within the control unit that needs to implement a certain soil and water conservation measure. Then, the construction area of each soil and water conservation measure and the grid resolution of the allocation unit are calculated to obtain the number of allocation units that the soil and water conservation measure needs to be distributed in the control unit.

[0291] In a preferred embodiment, a schematic diagram of the spatial distribution of soil and water conservation measures in the target watershed is provided, which can be specifically referred to as shown in Figure 3 As can be seen from the figure, the region is divided into three control units, which are sorted in the first priority order as 1, 2 and 3. In each control unit, a plurality of allocation units are divided, there are three allocation units in the first control unit, four allocation units in the second control unit, and five allocation units in the third control unit. The allocation units in each control unit are sorted in the second priority order.

[0292] Step S105, in combination with the construction area of each soil and water conservation measure to be implemented for each control unit, the number of allocation units that each soil and water conservation measure needs to be distributed in each control unit is determined;

[0293] In a preferred embodiment, in combination with the construction area of each soil and water conservation measure corresponding to each control unit, the number of allocation units that each soil and water conservation measure needs to be distributed in each control unit is determined, which includes:

[0294] Obtaining the construction area of each soil and water conservation measure corresponding to any control unit;

[0295] According to the construction area of any soil and water conservation measure and the grid resolution of the allocation unit, the number of allocation units that the soil and water conservation measure needs to be distributed in the control unit is calculated.

[0296] Specifically, in this embodiment, first, the construction area of each soil and water conservation measure corresponding to each control unit is obtained. This area represents the total area within the control unit that needs to implement a certain soil and water conservation measure. Then, the construction area of each soil and water conservation measure and the grid resolution of the allocation unit are calculated to obtain the number of allocation units that the soil and water conservation measure needs to be distributed in the control unit.

[0297] Step S106, according to the first priority order, the second priority order, and the soil and water conservation measures to be implemented by each allocation unit and the number of allocation units that each soil and water conservation measure needs to be distributed, the spatial distribution of soil and water conservation measures in the target watershed is performed.

[0298] Specifically, in this step, the spatial distribution of soil and water conservation measures to be implemented in each control unit is carried out according to the first priority order of the spatial distribution of soil and water conservation measures to be implemented in each control unit, the second priority order of the spatial distribution of soil and water conservation measures to be implemented in each configuration unit within each control unit, the soil and water conservation measures to be implemented in each configuration unit, and the number of configuration units to be distributed for each soil and water conservation measure.

[0299] This application provides a method for optimizing the configuration and spatial distribution of soil and water conservation measures. The method includes: determining multiple control units based on digital topographic information and river system information of a target watershed; performing grid subdivision on each control unit to obtain multiple configuration units within each control unit; conducting hydrological simulation analysis on each control unit to determine the proposed water and water conservation measures' storage capacity for each control unit, and the first priority order for the spatial distribution of these measures; and determining the appropriate water and water conservation measures for each control unit based on their proposed storage capacity, combined with the input-output ratio and suitability evaluation indicators. The proposed construction area of ​​the measures; establishing a comprehensive suitability evaluation index, determining the proposed soil and water conservation measures for each configuration unit within each control unit based on the comprehensive suitability evaluation index, and determining the second priority order of the spatial distribution of the proposed soil and water conservation measures for each configuration unit based on the comprehensive suitability evaluation index; combining the proposed construction area of ​​each soil and water conservation measure for each control unit, determining the number of configuration units in each control unit where each soil and water conservation measure needs to be distributed; and spatially distributing the soil and water conservation measures in the target watershed according to the first priority order, the second priority order, the proposed soil and water conservation measures for each configuration unit, and the number of configuration units in which each soil and water conservation measure needs to be distributed.

[0300] Based on the same concept, a second aspect of the embodiments of this application provides a water and soil conservation optimization configuration and spatial distribution technology system, such as... Figure 4 As shown, the system includes:

[0301] The first determining module 201 is used to determine multiple control units based on the digital terrain information and river system information of the target watershed, and to perform grid subdivision on each control unit to obtain multiple configuration units within each control unit;

[0302] The second determining module 202 is configured to perform hydrological simulation analysis on each control unit, determine the constructed regulation and storage capacity of the soil and water conservation measures to be implemented for each control unit, and determine the first priority order of the spatial distribution of the soil and water conservation measures to be implemented for each control unit;

[0303] The third determining module 203 is configured to determine the constructed area of each soil and water conservation measure to be implemented for each control unit according to the constructed regulation and storage capacity of the soil and water conservation measures to be implemented for each control unit, and in combination with the input-output ratio evaluation index and the suitability evaluation index of each soil and water conservation measure;

[0304] The fourth determining module 204 is configured to establish a comprehensive suitability evaluation index, determine the soil and water conservation measures to be implemented for each configuration unit in each control unit according to the comprehensive suitability evaluation index, and determine the second priority order of the spatial distribution of the soil and water conservation measures to be implemented for each configuration unit according to the comprehensive suitability evaluation index;

[0305] The fifth determining module 205 is configured to determine the number of configuration units to be distributed for each soil and water conservation measure in each control unit in combination with the constructed area of each soil and water conservation measure to be implemented for each control unit.

[0306] The spatial distribution module 206 is configured to perform spatial distribution of the soil and water conservation measures for the target river basin according to the first priority order, the second priority order, the soil and water conservation measures to be implemented for each configuration unit, and the number of configuration units to be distributed for each soil and water conservation measure.

[0307] Optionally, the digital terrain information and the river system information of the target river basin are used to determine a plurality of control units, and the first determining module 201 comprises:

[0308] The correction sub-module is configured to correct original digital elevation data of the target river basin based on the digital terrain information and the river system information of the target river basin to obtain modified digital elevation data.

[0309] The sub-basin division sub-module is configured to divide the target river basin into a plurality of sub-basins according to the modified digital elevation data.

[0310] The first determining sub-module is configured to determine each sub-basin as a control unit.

[0311] Optionally, the grid division is performed on each control unit to obtain a plurality of configuration units in each control unit, and the first determining module 201 comprises:

[0312] a first obtaining sub-module, configured to obtain an area of each control unit;

[0313] a mesh division sub-module, configured to perform mesh division on each control unit according to a preset mesh resolution based on the area of each control unit, to obtain a plurality of configuration units in each control unit.

[0314] Optionally, the hydrological simulation analysis on each control unit is performed to determine a water and soil conservation measure to be implemented in each control unit, a construction and regulation capacity of the water and soil conservation measure, and a first priority order of spatial distribution of the water and soil conservation measure in each control unit, and the second determining module 202 comprises:

[0315] a hydrological simulation analysis sub-module, configured to establish a hydrological model and perform hydrological simulation analysis on each control unit by using the hydrological model;

[0316] a second determining sub-module, configured to determine surplus and deficit water quantity and surplus and deficit water index of each control unit based on the result of the hydrological simulation analysis on each control unit;

[0317] a third determining sub-module, configured to determine the construction and regulation capacity of the water and soil conservation measure to be implemented in each control unit according to the surplus and deficit water quantity of each control unit;

[0318] a fourth determining sub-module, configured to determine the first priority order of spatial distribution of the water and soil conservation measure to be implemented in each control unit according to the surplus and deficit water index of each control unit.

[0319] Optionally, the third determining sub-module comprises:

[0320] a first determining sub-unit, configured to determine water resource quantity of a first type of water resource and water resource quantity of a second type of water resource, and water demand of the first type of water resource and water demand of the second type of water resource in any control unit according to the result of the hydrological simulation analysis on the control unit;

[0321] a second determining sub-unit, configured to determine surplus and deficit water quantity of the first type of water resource according to the water resource quantity of the first type of water resource and the water demand of the first type of water resource;

[0322] a third determining sub-unit, configured to determine surplus and deficit water quantity of the second type of water resource according to the water resource quantity of the second type of water resource and the water demand of the second type of water resource;

[0323] a fourth determining sub-unit, configured to determine a total profit and loss water amount of the control unit according to the profit and loss water amount of the first type of water resource and the profit and loss water amount of the second type of water resource;

[0324] a fifth determining sub-unit, configured to determine a water and soil conservation measure construction and regulation and storage capacity to be implemented by the control unit according to the total profit and loss water amount of any one of the control units, and the profit and loss water amount of the first type of water resource and the profit and loss water amount of the second type of water resource of the control unit.

[0325] Optionally, the profit and loss water index of the control unit is determined, and the second determining sub-module comprises:

[0326] a first obtaining sub-unit, configured to respectively obtain a first profit and loss correction coefficient, a second profit and loss correction coefficient and a total profit and loss correction coefficient;

[0327] a sixth determining sub-unit, configured to determine the profit and loss water index of the first type of water resource of the control unit according to the profit and loss water amount of the first type of water resource and the first profit and loss correction coefficient;

[0328] a seventh determining sub-unit, configured to determine the profit and loss water index of the second type of water resource of the control unit according to the profit and loss water amount of the second type of water resource and the second profit and loss correction coefficient;

[0329] an eighth determining sub-unit, configured to determine a total profit and loss water index of the control unit according to the total profit and loss water amount and the total profit and loss correction coefficient.

[0330] Optionally, the first priority order of the water and soil conservation measure spatial distribution to be implemented for each of the control units is determined according to the profit and loss water index of each of the control units, and the fourth determining sub-module comprises:

[0331] a second obtaining sub-unit, configured to obtain a target water resource type of each of the control units;

[0332] a profit and loss water index determining sub-unit, configured to determine the profit and loss water index of each of the control units according to the target water resource type of each of the control units;

[0333] a sorting sub-unit, configured to sort each of the control units according to the profit and loss water index of each of the control units in descending order or from upstream to downstream to obtain the first priority order.

[0334] Optionally, the third determining module 203, which determines the proposed construction area of ​​each soil and water conservation measure for each control unit based on the proposed water storage capacity to be constructed according to the proposed soil and water conservation measures to be implemented in each control unit, and in conjunction with the input-output ratio evaluation index and suitability evaluation index of each soil and water conservation measure, includes:

[0335] A submodule is established to build a multi-objective optimization configuration model based on the proposed water and soil conservation capacity to be constructed by any of the control units, the input-output ratio evaluation index and suitability evaluation index of each of the proposed water and soil conservation measures, and in combination with the theoretical construction capacity per unit area of ​​the water and soil conservation measures.

[0336] The first calculation submodule is used to calculate the proposed construction area of ​​each soil and water conservation measure to be implemented by the control unit based on the multi-objective optimization configuration model using the following formula:

[0337]

[0338] in, Indicates control unit The objective function for optimizing the proposed construction area of ​​soil and water conservation measures; Indicates the first The proposed construction area for soil and water conservation measures; Indicates the first The theoretical water storage capacity per unit area of ​​each soil and water conservation measure; Indicates control unit The The suitability of the soil and water conservation measures is the highest. Indicates control unit The The water and soil conservation measures have the highest input-output ratio. Indicates control unit The The water and soil conservation measures have the lowest profit and loss index.

[0339] Optionally, the input-output ratio evaluation index of the soil and water conservation measures is determined through the following system:

[0340] The second acquisition submodule is used to acquire the construction investment standards and theoretical water storage capacity of the soil and water conservation measures;

[0341] The second calculation submodule is used to calculate the input-output ratio evaluation index of the soil and water conservation measures based on the construction investment standards and the theoretical water storage capacity, using the following formula:

[0342]

[0343] wherein, represents the evaluation index of the input-output ratio of the soil and water conservation measure; represents the construction investment per unit area of the soil and water conservation measure; represents the theoretical construction regulation and storage capacity per unit area of the soil and water conservation measure.

[0344] Optionally, the theoretical regulation and storage capacity of the soil and water conservation measure is determined by the following system:

[0345] The classification submodule is configured to classify the soil and water conservation measure according to the technical means and regulation characteristics of the soil and water conservation measure.

[0346] The retrieval submodule is configured to determine the keywords corresponding to the soil and water conservation measure according to the classification result, and perform literature retrieval through the keywords to obtain target literature.

[0347] The effect value determination submodule is configured to pick up experimental data corresponding to the soil and water conservation measure in the target literature through a Get-data tool, and analyze the experimental data through a Meta-analysis tool to obtain the effect value of the soil and water conservation measure.

[0348] The data transformation submodule is configured to perform data transformation on the effect value to obtain the theoretical regulation and storage capacity.

[0349] Optionally, the suitability evaluation index of the soil and water conservation measure is determined by the following system:

[0350] The third acquisition submodule is configured to acquire the construction standard limiting condition of the soil and water conservation measure, and the number of environmental factors, wherein the environmental factors represent environmental factors affecting the regulation and storage capacity of the soil and water conservation measure.

[0351] The third calculation submodule is configured to calculate the suitability evaluation index of the soil and water conservation measure according to the construction standard limiting condition and the number of environmental factors through the following formula:

[0352]

[0353] wherein, represents the suitability evaluation index of the soil and water conservation measure; represents the number of environmental factors; represents the construction standard limiting condition corresponding to the soil and water conservation measure; a suitability index of an environmental factor; represents the represents the influence weight of the th environmental factor corresponding to the limited condition of the

[0354] Optionally, the comprehensive suitability evaluation index is determined by the following system:

[0355] The first adaptation sub-module is configured to adapt the suitability evaluation index of each of the soil and water conservation measures to any of the configuration units, to obtain the suitability evaluation index of each of the soil and water conservation measures implemented for the configuration unit;

[0356] The second adaptation sub-module is configured to adapt the input-output ratio index of each of the soil and water conservation measures to the configuration unit, to obtain the input-output ratio index of each of the soil and water conservation measures implemented for the configuration unit;

[0357] The fourth calculation sub-module is configured to calculate the comprehensive suitability evaluation index of each of the soil and water conservation measures implemented for the configuration unit according to the suitability evaluation index of each of the soil and water conservation measures implemented for the configuration unit and the input-output ratio index of each of the soil and water conservation measures implemented for the configuration unit;

[0358] The comprehensive suitability evaluation index is determined by the following formula:

[0359]

[0360] wherein, represents the comprehensive suitability index of the th soil and water conservation measure on the configuration unit; represents the suitability index of the th soil and water conservation measure on the configuration unit; represents the mean value of the suitability index of the th soil and water conservation measure on different configuration units; represents the input-output ratio index of the th soil and water conservation measure on the configuration unit; represents the mean value of the input-output ratio index of the th soil and water conservation measure on different configuration units; , represents the weight.

[0361] Optionally, the fourth determining module 204 is configured to determine the water and soil conservation measures to be implemented for each configuration unit in each control unit according to the comprehensive suitability evaluation index, and determine a second priority order of spatial distribution of the water and soil conservation measures to be implemented for each configuration unit according to the comprehensive suitability evaluation index.

[0362] The fifth determining sub-module is configured to determine, according to the comprehensive suitability evaluation index of each water and soil conservation measure implemented in any configuration unit, the water and soil conservation measure with the highest comprehensive suitability evaluation index of the configuration unit as the water and soil conservation measure to be implemented in the configuration unit.

[0363] The sorting sub-module is configured to sort the comprehensive suitability evaluation indexes of the water and soil conservation measures to be implemented in each configuration unit in descending order or from upstream to downstream to obtain the second priority order.

[0364] Optionally, the fifth determining module 205 is configured to determine the number of configuration units to be distributed in each control unit for each water and soil conservation measure to be implemented in each control unit according to the construction area of each water and soil conservation measure to be implemented in each control unit.

[0365] The fourth obtaining sub-module is configured to obtain the construction area of each water and soil conservation measure to be implemented in any control unit.

[0366] The fifth calculating sub-module is configured to calculate the number of configuration units to be distributed in each control unit for each water and soil conservation measure according to the construction area of the water and soil conservation measure and the grid resolution of the configuration unit.

[0367] Based on the same inventive concept, the third aspect of the embodiments of the present application provides a computer readable storage medium having a computer program or computer instructions stored thereon, the computer program or computer instructions being executed by a processor to implement the water and soil conservation optimization configuration and spatial distribution technical method according to the first aspect of the present application.

[0368] Each embodiment in the specification focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0369] Those skilled in the art will appreciate that embodiments of the application can be supplied as a method, a device, or a computer program product. Thus, embodiments of the application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.

[0370] Embodiments of the application are described herein with reference to the drawings, in which are shown flowcharts and / or block diagrams of methods, apparatuses (systems) and computer program products according to embodiments of the application. It will be understood that each flow and / or block of the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing terminal apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal apparatus, create means for implementing the functions specified in the flowcharts and / or block diagrams block or blocks. Figure 1 Figure 1

[0371] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing terminal apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowcharts and / or block diagrams block or blocks. Figure 1 Figure 1

[0372] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal apparatus to cause a series of operational steps to be performed on the computer or other programmable terminal apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal apparatus provide steps for implementing the flowcharts and / or block diagrams block or blocks. Figure 1 Figure 1

[0373] While preferred embodiments of the application have been described, those skilled in the art will appreciate that additional modifications and variations to the preferred embodiments are possible in light of the above teachings. It is, therefore, intended that the appended claims be construed to cover all such modifications and variations as fall within the true spirit and scope of the application.

[0374] ​​​​​​Finally, it is to be understood that the phraseology or terminology such as "first" and "second" etc. used herein is merely intended to differentiate one entity or operation from another entity or operation, without necessarily requiring or implying any actual such relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0375] The above provides a water and soil conservation optimization configuration and spatial distribution technical method, system and medium, and the principle and implementation mode of the present application are described by applying specific examples in the present application. The above example is only used to help understand the method and core idea of the present application; meanwhile, for the general technical personnel in the art, the specific implementation mode and application range will be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A method for optimizing the configuration and spatial distribution of soil and water conservation, characterized in that, The method comprises: Based on the digital terrain information and river system information of the target basin, a plurality of control units are determined, and each control unit is meshed to obtain a plurality of configuration units in each control unit; Hydrological simulation analysis is performed on each control unit to determine the soil and water conservation measures to be implemented in each control unit, the construction and regulation capacity, and the first priority order of the spatial distribution of the soil and water conservation measures in each control unit, which comprises: Establishing a hydrological model and performing hydrological simulation analysis on each control unit through the hydrological model; Based on the results of the hydrological simulation analysis of each control unit, the water surplus and deficit of each control unit and the water surplus and deficit index are determined; According to the water surplus and deficit of each control unit, the construction and regulation capacity of the soil and water conservation measures to be implemented in each control unit is determined; According to the water surplus and deficit index of each control unit, the first priority order of the spatial distribution of the soil and water conservation measures to be implemented in each control unit is determined; According to the construction and regulation capacity of the soil and water conservation measures to be implemented in each control unit, and combined with the input-output ratio evaluation index and the suitability evaluation index of each soil and water conservation measure, the construction area of each soil and water conservation measure to be implemented in each control unit is determined; A comprehensive suitability evaluation index is established, and the soil and water conservation measures to be implemented in each configuration unit in each control unit are determined according to the comprehensive suitability evaluation index, and the second priority order of the spatial distribution of the soil and water conservation measures to be implemented in each configuration unit is determined according to the comprehensive suitability evaluation index, which comprises: According to the comprehensive suitability evaluation index of each configuration unit implementing each soil and water conservation measure, the soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit is determined as the soil and water conservation measure to be implemented in the configuration unit; The comprehensive suitability evaluation index of each configuration unit to be implemented is sorted in descending order from upstream to downstream to obtain the second priority order; Combined with the construction area of each soil and water conservation measure to be implemented in each control unit, the number of configuration units to be distributed for each soil and water conservation measure in each control unit is determined; According to the first priority order, the second priority order, and the water and soil conservation measures to be implemented by each configuration unit and the number of configuration units required for each water and soil conservation measure, the spatial distribution of the water and soil conservation measures in the target watershed is determined.

2. The method for optimizing configuration and spatial distribution of soil and water conservation according to claim 1, wherein, The digital terrain information and river system information of the target watershed are used to determine a plurality of control units, including: Based on the digital terrain information and river system information of the target watershed, the original digital elevation data of the target watershed is corrected to obtain corrected digital elevation data; According to the corrected digital elevation data, the target watershed is divided into sub-watersheds to obtain a plurality of sub-watersheds of the target watershed; Each of the sub-watersheds is determined as a control unit.

3. The technical method for optimizing configuration and spatial distribution of water and soil conservation according to claim 1 or 2, characterized in that, The grid division of each control unit is performed to obtain a plurality of configuration units within each control unit, including: Obtain the area of each control unit; According to the area of each control unit, the grid division of each control unit is performed according to a predetermined grid resolution to obtain a plurality of configuration units within each control unit.

4. The method for optimizing the configuration and spatial distribution of water and soil conservation according to claim 1, characterized in that, The water and soil conservation measures to be implemented by each control unit are determined according to the water balance of each control unit, including: According to the hydrological simulation analysis results of any control unit, the water resources of the first type of water resources and the second type of water resources, and the water demand of the first type of water resources and the second type of water resources are determined; According to the water resources of the first type of water resources and the water demand of the first type of water resources, the water balance of the first type of water resources is determined; According to the water resources of the second type of water resources and the water demand of the second type of water resources, the water balance of the second type of water resources is determined; According to the water balance of the first type of water resources and the water balance of the second type of water resources, the total water balance of the control unit is determined; According to the total water balance of any control unit, and the water balance of the first type of water resources and the water balance of the second type of water resources of the control unit, the water and soil conservation measures to be implemented by the control unit are determined.

5. The method for optimizing the configuration and spatial distribution of soil and water conservation according to claim 4, characterized in that, The water balance index of the control unit is determined, including: First, second and total water balance correction coefficients are obtained respectively; According to the water balance of the first type of water resources and the first water balance correction coefficient, the water balance index of the first type of water resources of the control unit is determined; According to the water balance of the second type of water resources and the second water balance correction coefficient, the water balance index of the second type of water resources of the control unit is determined; According to the total water balance and the total water balance correction coefficient, the total water balance index of the control unit is determined.

6. The method for optimizing the configuration and spatial distribution of soil and water conservation according to claim 5, wherein, According to the water balance index of each control unit, the first priority order of the spatial distribution of the water and soil conservation measures to be implemented for each control unit is determined, including: The target water resource type of each control unit is obtained; determining a profit and loss water index of each of the control units according to a target water resource type of each of the control units; sequentially sorting, according to a descending order and from an upstream to a downstream, the control units according to the profit and loss water index of each of the control units to obtain the first priority order.

7. The method for water and soil conservation optimization configuration and spatial distribution according to claim 1, characterized in that, The construction area of each of the soil and water conservation measures to be implemented for each of the control units is determined according to the construction capacity of the soil and water conservation measures to be implemented for each of the control units, the input-output ratio evaluation index and the suitability evaluation index of each of the soil and water conservation measures, and comprises: a multi-objective optimization allocation model is established according to the construction capacity of the soil and water conservation measures to be implemented for each of the control units, the input-output ratio evaluation index and the suitability evaluation index of each of the soil and water conservation measures to be implemented for the control unit, and the unit area theoretical construction capacity of the soil and water conservation measures; the construction area of each of the soil and water conservation measures to be implemented for the control unit is calculated according to the multi-objective optimization allocation model through the following formula: in, Indicates control unit The objective function for optimizing the proposed construction area of ​​soil and water conservation measures; Indicates the first The proposed construction area for soil and water conservation measures; Indicates the first The theoretical water storage capacity per unit area of ​​each soil and water conservation measure; Indicates control unit The The suitability of the soil and water conservation measures is the highest. Indicates control unit The The water and soil conservation measures have the highest input-output ratio. Indicates control unit The The water and soil conservation measures have the lowest profit and loss index.

8. The method for optimizing the configuration and spatial distribution of water and soil conservation according to claim 7, characterized in that, The input-output ratio evaluation index of the soil and water conservation measures is determined by the following method: obtaining the construction investment standard and the theoretical construction capacity of the soil and water conservation measures; The input-output ratio evaluation index of the soil and water conservation measures is calculated according to the construction investment standard and the theoretical construction capacity of the soil and water conservation measures through the following formula: wherein, represents the first item of water and soil conservation measures input-output ratio evaluation index; represents the first item of water and soil conservation measures in the construction investment per unit area; represents the first item of water and soil conservation measures per unit area of theoretical construction storage capacity.

9. The method for optimizing the configuration and spatial distribution of water and soil conservation according to claim 8, characterized in that, The theoretical construction capacity of the soil and water conservation measures is determined by the following method: classifying the soil and water conservation measures according to the technical means and the regulation characteristics of the soil and water conservation measures; determining the keywords corresponding to the soil and water conservation measures according to the classification results, and obtaining target literature through literature retrieval based on the keywords; picking up the experimental data corresponding to the soil and water conservation measures in the target literature through a Get-data tool, and obtaining the effect value of the soil and water conservation measures by analyzing the experimental data through a Meta-analysis tool; The effect value is data transformed to obtain the theoretical construction capacity.

10. The method of water and soil conservation optimization configuration and spatial distribution according to claim 7, wherein, The suitability evaluation index of the soil and water conservation measures is determined by the following method: obtaining the construction standard limitation condition of the soil and water conservation measures, and the number of environmental factors, the environmental factors representing the environmental factors affecting the construction capacity of the soil and water conservation measures; The suitability evaluation index of the soil and water conservation measures is calculated according to the construction standard limitation condition and the number of environmental factors through the following formula: in, Indicates the first Suitability evaluation indicators for soil and water conservation measures; Indicates the number of environmental factors; Indicates the first The construction standard limiting conditions corresponding to the first item of soil and water conservation measures Suitability index of each environmental factor; Indicates the first The first water and soil conservation measure construction standard limit condition corresponding to the first The influence weights of each environmental factor.

11. The method of water and soil conservation optimization and spatial distribution according to claim 1, wherein, The comprehensive suitability evaluation index is determined by the following method: The suitability evaluation index of each of the soil and water conservation measures is adapted to each of the allocation units to obtain the suitability evaluation index of each of the soil and water conservation measures implemented for the allocation unit; The input-output ratio index of each of the soil and water conservation measures is adapted to the allocation unit to obtain the input-output ratio index of each of the soil and water conservation measures implemented for the allocation unit; According to the suitability evaluation index of implementing each of the soil and water conservation measures for the configuration unit and the input-output ratio index of implementing each of the soil and water conservation measures for the configuration unit, a comprehensive suitability evaluation index of implementing each of the soil and water conservation measures for the configuration unit is calculated; The comprehensive suitability evaluation index is determined by the following formula: wherein, represents the comprehensive suitability index of the water and soil conservation measures of the configuration unit; represents the suitability index of the water and soil conservation measures of the configuration unit; represents the suitability index of the water and soil conservation measures of the configuration unit; represents the suitability index of the water and soil conservation measures of the configuration unit; represents the mean value of the suitability index of the water and soil conservation measures of different configuration units; represents the mean value of the suitability index of the water and soil conservation measures of different configuration units; represents the input-output ratio index of the water and soil conservation measures of the configuration unit; represents the input-output ratio index of the water and soil conservation measures of the configuration unit; represents the mean value of the input-output ratio index of the water and soil conservation measures of different configuration units; represents the mean value of the input-output ratio index of the water and soil conservation measures of different configuration units; , represents the weight.

12. The method of water and soil conservation optimization and spatial distribution according to claim 1, wherein, In combination with the proposed construction area of each of the soil and water conservation measures proposed to be implemented for each of the control units, the number of the configuration units required to be distributed for each of the soil and water conservation measures in each of the control units is determined, including: The proposed construction area of each of the soil and water conservation measures proposed to be implemented for any of the control units is obtained; According to the proposed construction area of any of the soil and water conservation measures and the grid resolution of the configuration unit, the number of the configuration units required to be distributed for the soil and water conservation measure in the control unit is calculated.

13. A water and soil conservation optimization configuration and spatial distribution technology system, characterized in that, The system comprises: A first determination module is configured to determine a plurality of control units based on digital terrain information and river system information of a target basin, and to perform grid division on each of the control units to obtain a plurality of configuration units in each of the control units; A second determination module is configured to perform hydrological simulation analysis on each of the control units to determine proposed construction regulation and storage capacity of soil and water conservation measures proposed to be implemented for each of the control units, and a first priority order of spatial distribution of soil and water conservation measures proposed to be implemented for each of the control units; The second determination module comprises: A hydrological simulation analysis submodule is configured to establish a hydrological model and perform hydrological simulation analysis on each of the control units by using the hydrological model; A second determination submodule is configured to determine surplus and deficit water volume and surplus and deficit water index of each of the control units based on the hydrological simulation analysis result of each of the control units; A third determination submodule is configured to determine proposed construction regulation and storage capacity of soil and water conservation measures proposed to be implemented for each of the control units according to the surplus and deficit water volume of each of the control units; A fourth determination submodule is configured to determine the first priority order of spatial distribution of soil and water conservation measures proposed to be implemented for each of the control units according to the surplus and deficit water index of each of the control units; A third determination module is configured to determine the proposed construction area of each of the soil and water conservation measures proposed to be implemented for each of the control units according to the proposed construction regulation and storage capacity of the soil and water conservation measures proposed to be implemented for each of the control units, and in combination with the input-output ratio evaluation index and the suitability evaluation index of each of the soil and water conservation measures; A fourth determination module is configured to establish a comprehensive suitability evaluation index, determine soil and water conservation measures proposed to be implemented for each of the configuration units in each of the control units according to the comprehensive suitability evaluation index, and determine a second priority order of spatial distribution of soil and water conservation measures proposed to be implemented for each of the configuration units according to the comprehensive suitability evaluation index; The fourth determination module comprises: a fifth determining sub-module, configured to determine, according to the comprehensive suitability evaluation index of each of the soil and water conservation measures implemented by any of the configuration units, the soil and water conservation measure with the highest comprehensive suitability evaluation index of the configuration unit as the soil and water conservation measure to be implemented by the configuration unit; a sorting sub-module, configured to sort, according to the comprehensive suitability evaluation index of the soil and water conservation measure to be implemented by each of the configuration units, the comprehensive suitability evaluation index from large to small and from upstream to downstream, to obtain the second priority order; a fifth determining module, configured to determine, in combination with the construction area of each of the soil and water conservation measures to be implemented for each of the control units, the number of the configuration units to be distributed for each of the soil and water conservation measures in each of the control units; a spatial distribution module, configured to perform spatial distribution of the soil and water conservation measures on the target river basin according to the first priority order, the second priority order, the soil and water conservation measure to be implemented by each of the configuration units, and the number of the configuration units to be distributed for each of the soil and water conservation measures.

14. A computer readable storage medium having stored thereon a computer program or computer instructions, characterized in that, The computer program or computer instruction is executed by the processor to implement the soil and water conservation optimization configuration and spatial distribution technical method according to any one of claims 1 to 12.

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