Urban ecological clean small watershed river channel health condition evaluation method and device, electronic equipment and computer readable storage medium

Abstract

The invention discloses an urban ecological cleaning small watershed river channel health condition evaluation method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: analyzing influence factors which influence the health of an urban ecological cleaning small watershed river channel, and determining key factors from the influence factors as evaluation indexes; based on the evaluation indexes, analysis and evaluation are carried out, corresponding index scores are given, the index scores are obtained by adding and calculating all item scores of the indexes, and all the indexes are subjected to weighted summation to obtain a comprehensive evaluation index; comprehensively evaluating the health condition of the river channel based on the comprehensive evaluation index to obtain a corresponding evaluation result; and determining the health level of the health condition of the urban ecological clean small watershed river channel based on the evaluation result. The method is easy to operate and high in practicability, and the health condition of the urban ecological clean small watershed river channel obtained based on the method is beneficial to scientifically and reasonably guiding work such as problem diagnosis and ecological restoration of the urban ecological clean small watershed river channel.

Description

Technical Field

[0001] The present invention relates to the technical field of urban water environment health assessment, and further to a method, device, electronic equipment and computer-readable storage medium for assessing the health status of a river in a small urban ecological clean watershed. Background Art

[0002] Small and medium-sized urban rivers are closely related to the lives of citizens. In recent years, the construction of urban ecological clean small watersheds has been carried out across the country, and very good results have been achieved, which has greatly improved the water environment around the rivers and the quality of the living environment of citizens. In order to ensure the quality of ecological clean small watershed construction, it is necessary to conduct a systematic and framework-based investigation and evaluation of the water body conditions, structural conditions and surrounding environmental conditions of small and medium-sized urban rivers. Through the survey data, a comprehensive and integrated evaluation of the rivers is made according to the corresponding evaluation standards, and the health status of the urban ecological clean small watershed rivers is judged. Corresponding remediation and protection measures are made according to the health status. This is the direction and purpose of river management and water environment protection.

[0003] Urban ecological clean small watershed rivers have very obvious characteristics, such as a variety of river structure forms, short river length, and great influence of the surrounding environment, which results in many evaluation indicators and influencing factors. In addition to considering the overall stability of the river and water quality, it is also necessary to consider aspects closely related to the lives of citizens, such as river flood safety and river beauty. Traditional evaluation methods are difficult to reflect the characteristics of urban ecological small watershed rivers and conduct comprehensive evaluations of multiple different indicators. Therefore, studying a set of evaluation methods for the health status of urban ecological clean small watershed rivers has positive significance for the subsequent management and protection of small and medium-sized rivers in cities. Summary of the invention

[0004] In view of the above technical problems, the purpose of the present invention is to provide a method, device, electronic device and computer-readable storage medium for evaluating the health status of rivers in urban ecological clean small watersheds. The method is easy to operate and has strong feasibility. The health status of rivers in urban ecological clean small watersheds obtained based on the method of the present invention is helpful to scientifically and rationally guide the diagnosis of problems in urban ecological clean small watersheds, ecological restoration and other work.

[0005] In order to achieve the above object, the present invention provides a method for evaluating the health status of a river in an urban ecological clean small watershed, comprising the steps of:

[0006] Analyze the factors affecting the health of urban ecological clean small watershed rivers, and determine key factors from the influencing factors as evaluation indicators;

[0007] Analyze and evaluate based on the evaluation indicators and give corresponding indicator scores, the indicator score is calculated by adding up the scores of each item of the indicator, and the weighted sum of each indicator is used to obtain a comprehensive evaluation index;

[0008] Comprehensively evaluate the health status of the river based on the comprehensive evaluation index to obtain corresponding evaluation results;

[0009] The health level of the health status of the urban ecological clean small watershed river is determined based on the assessment results.

[0010] In some embodiments, the evaluation indicators include:

[0011] There are five major categories: river water quality, river soil and water conservation, river pollution control and management, river water system management and river landscape creation.

[0012] In some embodiments, the analysis and evaluation based on the evaluation index is performed and a corresponding index score is given, the index score is calculated by adding up the scores of each item of the index, and the weighted sum of each index is used to obtain a comprehensive evaluation index, including:

[0013] The river water quality indicators mentioned above are basic items of surface water environmental quality standards;

[0014] The river water and soil conservation indicators include soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control degree. Each item is scored and the scores are added up.

[0015] The river pollution control and treatment indicators are calculated by adding up the scores of each item after scoring, based on the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate;

[0016] The river system management indicators include the river and lake area compliance rate and the river and lake system ecological protection ratio. Each item is scored and the scores are added up.

[0017] The river beauty creation index includes the number of characteristic scenic spots in the river, citizen experience and evaluation items, and the scores of each item are added up after scoring;

[0018] Each evaluation item included in the five major categories of evaluation indicators is scored according to the scoring standards to obtain a score for each evaluation item. The final score of the five major categories of evaluation indicators is obtained by adding up the scores of the items included in each major category of indicators.

[0019] In some embodiments, the weight of river water quality index is 0.3, the weight of river soil and water conservation index is 0.2, the recommended weight of river pollution control and management index is 0.2, the weight of river water system management index is 0.2, and the weight of river landscape creation index is 0.1.

[0020] In some embodiments, an ecologically clean small watershed river health comprehensive evaluation index is established, and the formula is as follows:

[0021]

[0022] Where n is the number of evaluation indicators, k is the type of evaluation indicators, k = (1, 2 ~ n), x k is the evaluation index score, m k is the weight corresponding to the evaluation index, and S is the comprehensive evaluation index of the health status of the ecologically clean small watershed river.

[0023] In some embodiments, the health level is divided into six levels including: excellent, good, medium, slightly poor, poor and very poor.

[0024] According to another aspect of the present invention, the present invention further provides a device for evaluating the health status of a river in a small urban ecological clean watershed, comprising:

[0025] An indicator characterization unit is used to analyze the factors affecting the health of the river channel in the urban ecological clean small watershed, and determine the key factors from the influencing factors as evaluation indicators;

[0026] An indicator calculation unit is used to analyze and evaluate based on the evaluation indicator and give a corresponding indicator score, where the indicator score is calculated by summing up the scores of each item of the indicator, and the weighted sum of each indicator is used to obtain a comprehensive evaluation index;

[0027] An index evaluation unit, used to comprehensively evaluate the health status of the river channel based on the comprehensive evaluation index to obtain corresponding evaluation results;

[0028] The result acquisition unit is used to determine the health level of the urban ecological clean small watershed river health status based on the evaluation result.

[0029] In some embodiments, the evaluation indicators include five categories: river water quality, river soil and water conservation, river pollution control and management, river water system management and river landscape creation;

[0030] The indicator calculation unit includes:

[0031] A river water quality index calculation unit, used for the river water quality index being a basic item of surface water environmental quality standard;

[0032] A river channel soil and water conservation index calculation unit is used for the river channel soil and water conservation indexes such as soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control degree. After scoring each item, the score is added up for calculation;

[0033] A river pollution control and treatment index calculation unit is used to calculate the river pollution control and treatment index according to the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate, and the scores of each item are added up;

[0034] A river system management index calculation unit is used for the river system management index including the river and lake area compliance rate and the river and lake water system ecological protection ratio, and each item is scored and then the score is added up for calculation;

[0035] A river channel beauty creation index calculation unit, which is used for the river channel beauty creation index including the number of characteristic scenic spots in the river channel, citizen experience and evaluation items, and the score is added up after each item is scored;

[0036] The final score calculation unit is used to score each evaluation item included in the five categories of evaluation indicators according to the scoring criteria to obtain the score of each evaluation item, and to obtain the final score of the five categories of evaluation indicators by adding up the scores of the items included in each category of indicators.

[0037] According to another aspect of the present invention, the present invention further provides an electronic device, comprising:

[0038] at least one processor; and,

[0039] a memory communicatively connected to the at least one processor; wherein,

[0040] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the urban ecological clean small watershed river health status assessment method as described in any one of the above.

[0041] According to another aspect of the present invention, the present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements any of the above-mentioned methods for evaluating the health status of a river in a small urban ecological clean watershed.

[0042] Compared with the prior art, the urban ecological clean small watershed river health status evaluation method, device, electronic device and computer-readable storage medium provided by the present invention have the following beneficial effects:

[0043] In the present invention, by analyzing the various influencing factors that affect the urban ecological clean small watershed river, the key factors are determined as evaluation indicators, and at the same time, the scoring standards of the evaluation indicators are established. The evaluation index scores are obtained according to the actual investigation situation, and the evaluation index weights are analyzed and given. The urban ecological small watershed health evaluation method is used for weighted calculation to obtain a comprehensive evaluation index to evaluate the health status of the river. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0045] Figure 1 It is a flow chart of a method for evaluating the health status of a river in a small urban ecological clean watershed, a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0047] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0048] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] In one embodiment, the reference specification Figure 1 The present invention provides a method for evaluating the health status of a small urban ecological clean watershed river, comprising the steps of:

[0052] S100, analyzing the factors affecting the health of urban ecological clean small watershed rivers, and determining key factors from the influencing factors as evaluation indicators;

[0053] S200, analyzing and evaluating based on the evaluation index and giving a corresponding index score, where the index score is calculated by summing up the scores of each item of the index, and the weighted sum of each index is used to obtain a comprehensive evaluation index;

[0054] S300, comprehensively evaluating the health status of the river channel based on the comprehensive evaluation index to obtain corresponding evaluation results;

[0055] S400: Determine the health level of the urban ecological clean small watershed river health status based on the evaluation result.

[0056] The above description follows the order of S100-S400 only for the convenience of describing the method of the present invention, rather than limiting the steps of implementing the present invention. It can be seen from the following embodiments that those skilled in the art can make adjustments as needed based on the inventive concept disclosed in the present invention.

[0057] In one embodiment, the evaluation indicators include five categories: river water quality, river soil and water conservation, river pollution control and management, river water system management and river landscape creation.

[0058] In one embodiment, the evaluation is performed based on the evaluation index and a corresponding index score is given. The index score is calculated by adding up the scores of each item of the index, and the weighted sum of each index is used to obtain a comprehensive evaluation index, including: the river water quality index is a basic item of the surface water environmental quality standard; the river water and soil conservation index is a soil erosion intensity, forest and grass area ratio, and soil and water loss comprehensive management degree project, and the score is added up after each item is scored; the river pollution control and management index is calculated according to the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate, and scale aquaculture sewage treatment rate. The scores of the items of pollution-free treatment rate of domestic waste and pollution-free treatment rate of domestic waste are added up after each scoring; the river water system management indicators include the river and lake area compliance rate and the river and lake water system ecological protection ratio, and the scores of each item are added up after each scoring; the river beauty creation indicators include the number of characteristic landscape spots in the river, citizen experience and evaluation items, and the scores of each item are added up after each scoring; each evaluation item included in the five major evaluation indicators is scored according to the scoring standards to obtain the score of each evaluation item, and the final score of the five major evaluation indicators is obtained by adding up the scores of the items included in each major indicator.

[0059] In one embodiment, the weight of the river water quality index is 0.3, the weight of the river soil and water conservation index is 0.2, the recommended weight of the river pollution control and management index is 0.2, the weight of the river water system management index is 0.2, and the weight of the river landscape creation index is 0.1.

[0060] In one embodiment, a comprehensive evaluation index of river health in an ecologically clean small watershed is established, and the formula is as follows:

[0061]

[0062] Where n is the number of evaluation indicators, k is the type of evaluation indicators, k = (1, 2 ~ n), x k is the evaluation index score, m k is the weight corresponding to the evaluation index, and S is the comprehensive evaluation index of the health status of the ecologically clean small watershed river.

[0063] In one embodiment, the health level is divided into six levels including: excellent, good, medium, slightly poor, poor and extremely poor. A comprehensive evaluation system for river health status is established to provide a reference for river regulation and protection.

[0064] In one embodiment, the method for evaluating the health status of a small urban ecological clean watershed river comprises the following steps:

[0065] Through theoretical study combined with practical construction experience, we analyze various factors that affect the health of urban ecological clean small watershed rivers, investigate and analyze the factors that affect the health of urban ecological clean small watershed rivers, find out the key factors with greater influence, and determine the evaluation indicators that characterize the health of urban ecological small watershed rivers based on the key factors;

[0066] Further analyze the evaluation indicators to determine the evaluation items that the evaluation indicators should include, score the evaluation items according to the evaluation criteria, obtain the evaluation item scores and add them up to obtain the evaluation indicator scores;

[0067] According to the number of evaluation items included in each evaluation index and its importance in affecting the health of the river, the corresponding weight reference value is given;

[0068] The final score of each evaluation index and the weight of the evaluation index are weighted and summed to obtain the comprehensive evaluation index of the urban ecological clean small watershed river; the health status of the urban ecological clean small watershed river is comprehensively evaluated through the comprehensive evaluation index to obtain the evaluation results;

[0069] Based on the assessment results, the health status of rivers is divided into multiple levels, and a comprehensive evaluation system for the health status of urban ecological small watershed rivers is established to obtain the health levels of urban ecological clean small watershed rivers, including: excellent, good, medium, slightly worse, poor and extremely poor levels.

[0070] As an example, according to the evaluation indicators of river water quality, river water and soil conservation, river pollution control and management, river system management and river beauty, the score range and weight of the evaluation indicators are determined according to the number of evaluation items included and their importance in affecting the health of the river, as shown in Table 1:

[0071]

[0072]

[0073] Among them, the five indicators of river water quality, river soil and water conservation, river pollution control and management, river water system management and river beautiful scenery were scored according to the evaluation requirements to obtain the scores of the five indicators.

[0074] The water quality evaluation of the evaluated river is based on the annual average value calculated based on the monitoring data of basic indicators such as dissolved oxygen, permanganate index, ammonia nitrogen, and total phosphorus at each water quality monitoring point in the river. The evaluation should comply with the basic item standard limit provisions of GB 3838 "Surface Water Environmental Quality Standards". Points are assigned according to the water quality category and grade, and full marks are given for category III and above.

[0075] The soil and water conservation evaluation of the evaluated river channel should be calculated by adding up the scores of the three indicators of soil erosion intensity, forest and grass area ratio, and comprehensive control degree of soil and water loss, and a graded evaluation should be conducted; among which:

[0076] Soil erosion intensity is scored based on the soil erosion level divided by the amount of soil erosion occurring per unit area and per unit time period. No erosion is the full score, and points are deducted as the level decreases.

[0077] The proportion of forest and grassland area refers to the proportion of the existing forest and grassland area to the area suitable for forest and grassland and the total area of ​​the small watershed minus the area of ​​water surface, hardened road surface, farmland, fish pond, building (structure), etc. Finally, the score is given according to the proportion of area, and a proportion of more than 100% is a full score;

[0078] According to the Standard for Soil and Water Loss Prevention and Control in Production and Construction Projects (GB / T50434-2018), the comprehensive control of soil and water loss refers to the proportion of the area that meets the soil and water loss control standards to the total area of ​​soil and water loss. The corresponding score is given according to the corresponding proportion, and 100% control is the full score.

[0079] The evaluation of pollution control and treatment of the evaluated river should be calculated by adding up the scores of the five indicators: annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate, and a graded evaluation should be conducted; among which:

[0080] The amount of fertilizer used per unit area of ​​farmland each year is generally the data published by the statistical department (pure). If it is less than 250kg / hm2, full marks will be given, and the more it exceeds, the lower the score will be;

[0081] The domestic sewage treatment rate, also known as the urban sewage treatment rate, refers to the ratio of the sewage treatment volume of urban sewage treatment facilities to the sewage generation volume; the rural domestic sewage treatment rate refers to the ratio of the number of households covered by rural sewage treatment facilities to the total number of households in the living area; points are given based on the treatment rate, with a full score of 100%.

[0082] The industrial wastewater discharge compliance rate refers to the ratio of the number of industrial enterprises that have achieved wastewater treatment compliance to the total number of industrial enterprises. A treatment rate of 100% is a full score:

[0083] The scale aquaculture wastewater treatment rate includes the comprehensive resource utilization rate of livestock and poultry manure, and a utilization rate of 100% is given full marks; the aquaculture tailwater discharge rate that meets the standards refers to the ratio of the aquaculture area with tailwater that meets the standards to the total aquaculture area in the region, and a discharge rate that meets the standards is given full marks;

[0084] The harmless treatment rate of domestic waste refers to the ratio of the amount of harmless treatment of domestic waste to the amount of domestic waste generated, and a treatment rate of 100% is the full score.

[0085] The evaluation of the river system management should be calculated by adding up the scores of the two indicators, namely, the river and lake area compliance rate and the river and lake system ecological protection ratio, and a graded evaluation should be conducted; among which:

[0086] The compliance rate of river and lake area refers to the ratio of the existing water area in the region to the planned water area in the region, and a compliance rate of 100% is the full score.

[0087] The ecological protection ratio of river and lake systems refers to the proportion of the length of the coastline protected by ecological bank protection to the total length of the coastline of river and lake systems. A full score will be awarded if the proportion is more than 90%.

[0088] The evaluation of the beauty of the evaluated river should be calculated by adding up the scores of the two indicators of the number of characteristic scenic spots in the river and the experience and evaluation of citizens, and a graded evaluation should be conducted; among which:

[0089] The number of characteristic river landscapes refers to the number of characteristic landscapes created based on the characteristics of the river and the surrounding buildings and scenery. Full marks will be awarded for creating 3 or more;

[0090] Citizen experience and evaluation refers to the satisfaction of surrounding citizens with river facilities, routes, greenery and landscapes during their daily leisure time. A full score is given if the favorable rate is above 90%.

[0091] According to the indicator weight, The comprehensive evaluation index of the health status of urban ecological clean small watershed rivers is calculated.

[0092] According to the index scores and weights of the five evaluation indicators of river water quality, river water and soil conservation, river pollution control and management, river system management and river beauty, the health status of urban ecological clean small watershed rivers is divided into six levels: excellent, good, medium, slightly poor, poor and extremely poor, and the comprehensive evaluation grading standard is obtained, as shown in Table 2:

[0093]

[0094] The specific implementation mode and working process of the present invention are described as follows.

[0095] Select urban ecological clean small watershed rivers for index investigation and analysis to find out the factors that affect the health of the rivers;

[0096] Collect river data through field surveys, measurements and social public platforms, and formulate a survey, monitoring and evaluation plan for river health, and find key factors as evaluation indicators from various factors affecting river health;

[0097] For the urban ecological clean small watershed rivers, according to the comprehensive evaluation requirements, the focus is on the composition and characteristics of five indicators: river water quality, river soil and water conservation, river pollution control and management, river system management and river beauty;

[0098] The evaluation of river water quality should be based on the annual average value of basic indicators such as dissolved oxygen, permanganate index, ammonia nitrogen, and total phosphorus monitored at each water quality monitoring point in the river, and divided into five evaluation levels with a score range of 1 to 10. As shown in Table 3, the weight of the evaluation indicators is 0.3:

[0099]

[0100] The evaluation of river water and soil conservation should be based on the soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control indicators. The scores should be added up and divided into six evaluation levels, with a score range of 1 to 10. As shown in Table 4, the evaluation index weight is 0.2:

[0101]

[0102]

[0103] The evaluation of river pollution control and treatment should be scored and calculated based on the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate. The scores are divided into six evaluation levels, as shown in Table 5. The evaluation index weight is 0.2:

[0104]

[0105] The evaluation of river system management should be scored and calculated based on the river and lake area compliance rate and river and lake system ecological protection ratio, and divided into five evaluation levels, as shown in Table 6. The evaluation index weight is 0.2:

[0106]

[0107] The evaluation of river beauty should be scored and calculated based on the number of characteristic scenic spots in the river, citizen experience and evaluation items, and divided into five evaluation levels, as shown in Table 7, with an evaluation index weight of 0.1:

[0108]

[0109] The comprehensive evaluation index is a weighted sum of five indicators: river water quality, river water and soil conservation, river pollution control and management, river system management and river beauty. Calculated.

[0110] Where n is the number of evaluation factors, k is the type of evaluation index, k = (1, 2 ~ n), xk is the evaluation index score, and mk is the weight corresponding to the evaluation index.

[0111] Finally, based on the S index, the health status of urban ecological clean small watershed rivers is analyzed to judge whether the health status of urban rivers is at the levels of excellent, good, medium, slightly worse, poor and extremely poor.

[0112] According to another aspect of the present invention, the present invention further provides a device for evaluating the health status of a river in a small urban ecological clean watershed, comprising:

[0113] An indicator characterization unit is used to analyze the factors affecting the health of the river channel in the urban ecological clean small watershed, and determine the key factors from the influencing factors as evaluation indicators;

[0114] An indicator calculation unit is used to analyze and evaluate based on the evaluation indicator and give a corresponding indicator score, where the indicator score is calculated by summing up the scores of each item of the indicator, and the weighted sum of each indicator is used to obtain a comprehensive evaluation index;

[0115] An index evaluation unit, used to comprehensively evaluate the health status of the river channel based on the comprehensive evaluation index to obtain corresponding evaluation results;

[0116] The result acquisition unit is used to determine the health level of the urban ecological clean small watershed river health status based on the evaluation result.

[0117] In some embodiments, the evaluation indicators include five categories: river water quality, river soil and water conservation, river pollution control and management, river water system management and river landscape creation;

[0118] The indicator calculation unit includes:

[0119] A river water quality index calculation unit, used for the river water quality index being a basic item of surface water environmental quality standard;

[0120] A river channel soil and water conservation index calculation unit is used for the river channel soil and water conservation indexes such as soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control degree. After scoring each item, the score is added up for calculation;

[0121] A river pollution control and treatment index calculation unit is used to calculate the river pollution control and treatment index according to the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate, and the scores of each item are added up;

[0122] A river system management index calculation unit is used for the river system management index including the river and lake area compliance rate and the river and lake water system ecological protection ratio, and each item is scored and then the score is added up for calculation;

[0123] A river channel beauty creation index calculation unit, which is used for the river channel beauty creation index including the number of characteristic scenic spots in the river channel, citizen experience and evaluation items, and the score is added up after each item is scored;

[0124] The final score calculation unit is used to score each evaluation item included in the five categories of evaluation indicators according to the scoring criteria to obtain the score of each evaluation item, and to obtain the final score of the five categories of evaluation indicators by adding up the scores of the items included in each category of indicators.

[0125] According to another aspect of the present invention, the present invention further provides an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the urban ecological clean small watershed river health status assessment method as described in any one of the above.

[0126] Among them, the memory and the processor are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors and memories together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits through interfaces, which are all well known in the art. The interface provides an interface between the bus and the transceiver, such as a communication interface and a user interface. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor is transmitted on a wireless medium through an antenna, and further, the antenna also receives data and transmits the data to the processor.

[0127] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory can be used to store data used by the processor when performing operations.

[0128] According to another aspect of the present invention, the present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements any of the above-mentioned methods for evaluating the health status of a river in a small urban ecological clean watershed.

[0129] Those skilled in the art can understand from the above description that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes but is not limited to various media that can store program codes, such as USB flash drives, mobile hard disks, magnetic storage devices, and optical storage devices.

[0130] In the several embodiments provided in the present application, it should be understood that the disclosed system, device or method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules / units is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules or units, which can be electrical, mechanical or other forms.

[0131] The modules / units described as separate components may or may not be physically separated, and the components displayed as modules / units may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules / units may be selected according to actual needs to achieve the purpose of the embodiments of the present application. For example, the functional modules / units in the various embodiments of the present application may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0132] Those skilled in the art should further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two.

[0133] To clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0134] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0135] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A method for evaluating the health status of a small urban ecological clean watershed river, characterized in that: Includes steps: Analyze the factors affecting the health of urban ecological clean small watershed rivers, and determine key factors from the influencing factors as evaluation indicators; Analyze and evaluate based on the evaluation indicators and give corresponding indicator scores, the indicator score is calculated by adding up the scores of each item of the indicator, and the weighted sum of each indicator is used to obtain a comprehensive evaluation index; Comprehensively evaluate the health status of the river based on the comprehensive evaluation index to obtain corresponding evaluation results; The health level of the health status of the urban ecological clean small watershed river is determined based on the assessment results.

2. The method for evaluating the health status of a small urban ecological clean watershed river according to claim 1 is characterized in that: The evaluation indicators include: There are five major categories: river water quality, river soil and water conservation, river pollution control and management, river water system management and river landscape creation.

3. The method for evaluating the health status of a small urban ecological clean watershed river according to claim 2 is characterized in that: The analysis and evaluation based on the evaluation indicators are performed and the corresponding indicator scores are given. The indicator scores are calculated by adding up the scores of each item of the indicator. The weighted sum of each indicator is used to obtain a comprehensive evaluation index, including: The river water quality indicators mentioned above are basic items of surface water environmental quality standards; The river water and soil conservation indicators include soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control degree. Each item is scored and the scores are added up. The river pollution control and treatment indicators are calculated by adding up the scores of each item after scoring, based on the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate; The river system management indicators include the river and lake area compliance rate and the river and lake system ecological protection ratio. Each item is scored and the scores are added up. The river beauty creation index includes the number of characteristic scenic spots in the river, citizen experience and evaluation items, and the scores of each item are added up after scoring; Each evaluation item included in the five major categories of evaluation indicators is scored according to the scoring standards to obtain a score for each evaluation item. The final score of the five major categories of evaluation indicators is obtained by adding up the scores of the items included in each major category of indicators.

4. The method for evaluating the health status of a small urban ecological clean watershed river according to claim 3 is characterized in that: The weight of river water quality indicators is 0.3, the weight of river soil and water conservation indicators is 0.2, the recommended weight of river pollution control and management indicators is 0.2, the weight of river water system management indicators is 0.2, and the weight of river landscape creation indicators is 0.

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5. The method for evaluating the health status of a small urban ecological clean watershed river according to claim 1 is characterized in that: Establish a comprehensive evaluation index for river health in ecologically clean small watersheds. The formula is as follows: Where n is the number of evaluation indicators, k is the type of evaluation indicators, k = (1, 2 ~ n), x k is the evaluation index score, m k is the weight corresponding to the evaluation index, and S is the comprehensive evaluation index of the health status of the ecologically clean small watershed river.

6. The urban ecological clean small watershed river health status evaluation method according to claim 1 is characterized in that: The health grade is divided into six levels including: excellent, good, medium, slightly worse, poor and very poor.

7. An urban ecological clean small watershed river health status assessment device, characterized in that: include: An indicator characterization unit is used to analyze the factors affecting the health of the river channel in the urban ecological clean small watershed, and determine the key factors from the influencing factors as evaluation indicators; An indicator calculation unit is used to analyze and evaluate based on the evaluation indicator and give a corresponding indicator score, where the indicator score is calculated by summing up the scores of each item of the indicator, and the weighted sum of each indicator is used to obtain a comprehensive evaluation index; An index evaluation unit, used to comprehensively evaluate the health status of the river channel based on the comprehensive evaluation index to obtain corresponding evaluation results; The result acquisition unit is used to determine the health level of the urban ecological clean small watershed river health status based on the evaluation result.

8. The urban ecological clean small watershed river health status evaluation device according to claim 7 is characterized in that: The evaluation indicators include five categories: river water quality, river soil and water conservation, river pollution control and management, river system management and river landscape creation; The indicator calculation unit includes: A river water quality index calculation unit, used for the river water quality index being a basic item of surface water environmental quality standard; A river channel soil and water conservation index calculation unit is used for the river channel soil and water conservation indexes such as soil erosion intensity, forest and grass area ratio, and comprehensive soil and water loss control degree. After scoring each item, the score is added up for calculation; A river pollution control and treatment index calculation unit is used to calculate the river pollution control and treatment index according to the annual fertilizer use, domestic sewage treatment rate, industrial wastewater discharge rate that meets the standards, large-scale aquaculture sewage treatment rate, and domestic garbage pollution-free treatment rate, and the scores of each item are added up; A river system management index calculation unit is used for the river system management index including the river and lake area compliance rate and the river and lake water system ecological protection ratio, and each item is scored and then the score is added up for calculation; A river channel beauty creation index calculation unit, which is used for the river channel beauty creation index including the number of characteristic scenic spots in the river channel, citizen experience and evaluation items, and the score is added up after each item is scored; The final score calculation unit is used to score each evaluation item included in the five categories of evaluation indicators according to the scoring criteria to obtain the score of each evaluation item, and to obtain the final score of the five categories of evaluation indicators by adding up the scores of the items included in each category of indicators.

9. An electronic device, comprising: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the urban ecological clean small watershed river health status assessment method as described in any one of claims 1-5.

10. A computer-readable storage medium storing a computer program, wherein: When the computer program is executed by a processor, the method for evaluating the health status of a river in a small urban ecological clean watershed according to any one of claims 1 to 5 is implemented.

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