A method, system, medium, and product for optimizing the management of aquaculture patterns in watersheds.

Abstract

This invention discloses a method, system, medium, and product for optimizing the management of aquaculture patterns in watersheds, relating to the field of livestock farming. It divides the watershed into N optimization units; obtains nitrogen and phosphorus inflow thresholds; obtains the spatial distribution characteristics of nitrogen and phosphorus emissions; obtains the contribution ratios of nitrogen and phosphorus pollution loads; obtains the pollution load threshold for aquaculture entering the lake; obtains the aquaculture pollution emission threshold; obtains the aquaculture pollution emission reduction target; determines whether the aquaculture pollution emission reduction target is greater than 0; relocates aquaculture operations from optimization units requiring emission reduction targets to optimization units requiring increased emission targets, or adjusts the first livestock-poultry ratio of optimization units requiring emission reduction targets and the second livestock-poultry ratio of optimization units requiring increased emission targets; and determines whether the nitrogen and phosphorus emissions of any optimization unit after adjustment are greater than the aquaculture pollution emission threshold. This invention improves the management efficiency and accuracy of aquaculture in watersheds.

Description

Technical Field

[0001] This invention relates to the field of livestock breeding technology, and in particular to a method, system, medium, and product for optimizing the management of watershed aquaculture patterns. Background Technology

[0002] The rapid development of livestock and poultry farming has placed enormous pressure on my country's ecological environment, especially on the water environment. Agricultural non-point source pollution in watersheds, primarily driven by livestock farming, is gradually becoming a major constraint on further improvement of surface water quality. At the same time, livestock farming is a major source of income for farmers and an important support for rural revitalization. How to maintain reasonable production in livestock farming while mitigating its environmental impact is an important scientific question. Summary of the Invention

[0003] The purpose of this invention is to provide a method, system, medium, and product for optimizing the management of watershed aquaculture patterns, thereby improving the management efficiency and accuracy of watershed aquaculture.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A method for optimizing the aquaculture pattern in a watershed, the method comprising:

[0006] Obtain aquaculture area data for the entire watershed, and divide the watershed into N optimization units based on the aquaculture area data.

[0007] Based on the target water quality nitrogen threshold for entering the lake, the target water quality phosphorus threshold for entering the lake, the proportion of nitrogen threshold for entering the lake in livestock and poultry farming, the proportion of phosphorus threshold for entering the lake in livestock and poultry farming, and the total amount of water entering the lake, the nitrogen threshold and phosphorus threshold for entering the lake in the whole basin are obtained.

[0008] Based on the spatial distribution data of various livestock and poultry species within the target watershed and the pollution discharge coefficients of various livestock and poultry species, the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of various livestock and poultry species within the target watershed are obtained.

[0009] Based on the spatial distribution characteristics of nitrogen emissions, the spatial distribution characteristics of phosphorus emissions, and the lake inflow coefficient of the target watershed, the contribution ratios of nitrogen pollution load and phosphorus pollution load from livestock and poultry farming to the target water body in any optimized unit within the target watershed are obtained.

[0010] Based on the nitrogen inflow threshold, phosphorus inflow threshold, nitrogen pollution load contribution ratio, and phosphorus pollution load contribution ratio, the aquaculture inflow pollution load threshold for any optimization unit is obtained; based on the aquaculture inflow pollution load threshold and the target watershed inflow coefficient, the aquaculture pollution emission threshold for any optimization unit is obtained.

[0011] Based on the aforementioned pollution emission threshold for aquaculture, the pollution emission reduction target for any optimization unit is obtained; it is then determined whether the pollution emission reduction target for any optimization unit is greater than 0; if so, it is determined to be an optimization unit that needs to reduce its emission target; if not, it is determined to be an optimization unit that needs to increase its emission target.

[0012] With the number of livestock and poultry raised in N optimization units remaining unchanged, the livestock farming in the optimization units that need to reduce emission targets will be relocated to the optimization units that need to increase emission targets. Alternatively, the first livestock and poultry ratio of the optimization units that need to reduce emission targets and the second livestock and poultry ratio of the optimization units that need to increase emission targets will be adjusted to obtain the nitrogen and phosphorus emissions of any optimization unit after adjustment.

[0013] Determine whether the nitrogen and phosphorus emissions of any optimized unit after adjustment exceed the pollution emission threshold for livestock farming; if so, reduce the number of livestock and poultry raised in each optimized unit; if not, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each livestock and poultry species in the target watershed".

[0014] Optionally, the formula for calculating the nitrogen inflow threshold is:

[0015] F N =C N0 *R*T / 10;

[0016] Among them, F N To determine the nitrogen inflow threshold for livestock and poultry farming across the entire watershed, C N0 R represents the nitrogen concentration of the target water body, R represents the proportion of pollutants entering the lake from livestock and poultry farming in the current year, and T represents the total amount of water entering the lake in the current year.

[0017] The formula for calculating the phosphorus inflow threshold is:

[0018] F P =C P0 *R*T / 10;

[0019] Among them, F P To determine the phosphorus inflow threshold for livestock and poultry farming across the entire watershed, C P0 R represents the phosphorus concentration of the target water body and the proportion of pollutants entering the lake from livestock and poultry farming in the current year.

[0020] Optionally, the formula for calculating the nitrogen pollution load contribution ratio is:

[0021] L N = ×(1-R river ) × (1-R lake );

[0022] Among them, L NTo optimize the nitrogen pollution load contribution value of the unit, N i D represents the number of animals raised, and A represents the breeding cycle. i-N R represents the daily direct nitrogen emission coefficient for various livestock and poultry species. river R is the attenuation coefficient of livestock and poultry manure pollutants entering the river. lake The attenuation coefficient of livestock and poultry manure pollutants entering the lake;

[0023] The formula for calculating the contribution ratio of phosphorus pollution load is:

[0024] L P = ×(1-R river )×(1-R lake );

[0025] Among them, L P To optimize the phosphorus pollution load contribution value of the unit, A i-P This represents the daily direct phosphorus emission coefficient for various types of livestock and poultry.

[0026] Optionally, the nitrogen pollution emission threshold in the aquaculture pollution emission threshold is calculated as follows:

[0027] Y i-N =F N / (1-R lake ) / (1-R river );

[0028] Among them, Y i-N To optimize the nitrogen emission threshold for aquaculture pollution in the unit;

[0029] The formula for calculating the phosphorus pollution emission threshold in the aforementioned aquaculture pollution emission threshold is:

[0030] Y i-P =F P / (1-R lake ) / (1-R river );

[0031] Among them, Y i-P To optimize the phosphorus emission threshold for aquaculture pollution in the unit.

[0032] Optionally, the nitrogen emission reduction target of the aquaculture pollution emission reduction target is calculated as follows: X i-N =L N -Y i-N ;

[0033] Among them, X i-N To optimize the nitrogen emission reduction target for aquaculture pollution in the unit;

[0034] The formula for calculating the phosphorus emission reduction target of the aforementioned livestock pollution emission reduction target is: X i-P =LP - Y i-P ;

[0035] Among them, X i-P To optimize the target amount of phosphorus emission reduction for aquaculture pollution in the unit.

[0036] Optionally, adjusting the first livestock ratio of the optimization unit that needs to reduce emission targets and the second livestock ratio of the optimization unit that needs to increase emission targets specifically includes:

[0037] L PO =N liv / N pou ;

[0038] Among them, L PO For the regional livestock-poultry ratio, N liv N represents the number of livestock equivalent pigs raised. pou This refers to the number of poultry equivalent pigs raised.

[0039] Optionally, the formula for reducing the number of livestock and poultry raised in each optimization unit is as follows:

[0040] V i-N = X i-N / A i-N V i-P = X i-P / A i-P ;

[0041] Among them, V i-N To reduce the number of livestock farms exceeding nitrogen pollution levels, V i-P This is based on the reduction of livestock numbers exceeding phosphorus pollution levels.

[0042] A computer system includes: a memory and a processor for storing a computer program on the memory and running on the processor, wherein the processor executes the computer program to implement the watershed aquaculture pattern optimization management method.

[0043] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the watershed aquaculture pattern optimization management method.

[0044] A computer program product includes a computer program that, when executed by a processor, implements the watershed aquaculture pattern optimization management method.

[0045] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0046] This invention discloses a method, system, medium, and product for optimizing the management of aquaculture patterns in watersheds. It divides the watershed into N optimization units; obtains nitrogen and phosphorus inflow thresholds; obtains the spatial distribution characteristics of nitrogen and phosphorus emissions; obtains the contribution ratios of nitrogen and phosphorus pollution loads; obtains the pollution load threshold for aquaculture entering the lake; obtains the aquaculture pollution emission threshold; obtains the aquaculture pollution emission reduction target; determines whether the aquaculture pollution emission reduction target is greater than 0; relocates aquaculture operations from optimization units requiring emission reduction targets to optimization units requiring increased emission targets, or adjusts the first livestock-poultry ratio of optimization units requiring emission reduction targets and the second livestock-poultry ratio of optimization units requiring increased emission targets; and determines whether the nitrogen and phosphorus emissions of any optimization unit after adjustment exceed the aquaculture pollution emission threshold. This invention improves the management efficiency and accuracy of aquaculture in watersheds, provides a scientific method and theoretical basis for adjusting the aquaculture structure in watersheds, and lays the foundation for the green and high-quality development of aquaculture in watersheds. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the watershed aquaculture pattern optimization management method provided in an embodiment of the present invention;

[0049] Figure 2 An internal structural diagram of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] The purpose of this invention is to provide a method, system, medium, and product for optimizing the management of watershed aquaculture patterns, aiming to improve the management efficiency and accuracy of watershed aquaculture.

[0052] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Example 1

[0054] like Figure 1 As shown in the figure, the specific steps of the watershed aquaculture pattern optimization management method in this embodiment are as follows:

[0055] Step S1: Obtain the aquaculture area data for the entire watershed, and divide the watershed into N optimization units based on the aquaculture area data;

[0056] In one example, if the number of administrative counties in the entire basin is greater than or equal to N, the optimization unit for the aquaculture pattern in the basin is the county; if the number of administrative counties in the entire basin is less than N and the number of administrative towns is greater than or equal to N, the optimization unit for the aquaculture pattern in the basin is the town; if the number of administrative towns in the entire basin is less than N, the optimization unit for the aquaculture pattern in the basin is the administrative village. Those skilled in the art can flexibly design the value of N, such as 6, 7, 8, etc., which will not be elaborated here.

[0057] Step S2: Based on the target water quality nitrogen inflow threshold, the target water quality phosphorus inflow threshold, the proportion of nitrogen inflow threshold for livestock and poultry farming, the proportion of phosphorus inflow threshold for livestock and poultry farming, and the total amount of water flowing into the lake, obtain the nitrogen inflow threshold and phosphorus inflow threshold for livestock and poultry farming in the whole basin.

[0058] The formula for calculating the nitrogen inflow threshold is:

[0059] F N =C N0 *R*T / 10;

[0060] Among them, F N The target is the nitrogen inflow threshold (t) for livestock and poultry farming across the entire watershed. N0 R represents the nitrogen concentration (mg / L) of the target water body, R represents the percentage of pollutants entering the lake from livestock and poultry farming in the current year (%), and T represents the total amount of water entering the lake in the current year (t).

[0061] The formula for calculating the phosphorus inflow threshold is:

[0062] F P =C P0 *R*T / 10;

[0063] Among them, F P The target is the phosphorus inflow threshold (t) for livestock and poultry farming across the entire watershed. P0 R represents the phosphorus concentration (mg / L) of the target water body and the percentage of pollutants entering the lake from livestock and poultry farming in the current year.

[0064] In one example, the nitrogen and phosphorus inflow thresholds for livestock and poultry farming across the entire watershed are determined based on the target water quality concentrations for the target water body and the water quality targets for the target water body as defined in the guiding planning document. The proportion of pollutants entering the lake from livestock and poultry farming in the watershed is obtained from existing literature, and the inflow volume is obtained from hydrological departments.

[0065] Step S3: Based on the spatial distribution data of each livestock and poultry species in the target watershed and the pollution discharge coefficients of each livestock and poultry species, obtain the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each livestock and poultry species in the target watershed.

[0066] The formula for calculating the nitrogen pollution load contribution ratio of each optimization unit is as follows:

[0067] L N = ×(1-R river )×(1-R lake );

[0068] Among them, L N To optimize the nitrogen pollution load contribution value of the unit, N i D represents the number of heads raised, D represents the feeding cycle (d), and A represents the number of heads raised. i-N The daily direct nitrogen emission coefficient (kg‧head-) for various livestock and poultry 1 ‧a- 1 ), R river R is the attenuation coefficient (%) of livestock and poultry manure pollutants entering the river. lake The attenuation coefficient of livestock and poultry manure pollutants entering the lake (%).

[0069] The formula for calculating the phosphorus pollution load contribution ratio of each optimization unit is as follows:

[0070] L P = ×(1-R river ) × (1-R lake );

[0071] Among them, L P To optimize the phosphorus pollution load contribution value of the unit, A i-P The daily direct phosphorus emission coefficient (kg‧head) for various livestock and poultry -1 ‧a -1 ).

[0072] In one example, based on the spatial distribution of various livestock and poultry species within the target watershed and the discharge coefficients of various livestock and poultry species in the "Second National Pollution Source Census Livestock and Poultry Farming Source and Discharge Coefficient Handbook", the spatial distribution characteristics of nitrogen and phosphorus emissions of various livestock and poultry species within the target watershed are obtained. Then, based on the obtained watershed inflow coefficient, the proportion of nitrogen pollution load contribution and phosphorus pollution load contribution of livestock and poultry farming in each optimized unit within the watershed into the target water body are calculated.

[0073] The in-situ inflow coefficients and lake inflow coefficients of nitrogen and phosphorus from the target optimization unit to the target water body were obtained based on literature analysis.

[0074] Step S4: Based on the spatial distribution characteristics of nitrogen emissions, the spatial distribution characteristics of phosphorus emissions, and the lake inflow coefficient of the target watershed, obtain the contribution ratio of nitrogen pollution load and phosphorus pollution load of livestock and poultry farming to the target water body in any optimized unit within the target watershed;

[0075] The formula for calculating the nitrogen pollution emission threshold in the aquaculture pollution emission threshold of the optimization unit within the target watershed is as follows:

[0076] Y i-N =F N / (1-R lake ) / (1-R river );

[0077] Among them, Y i-N To optimize the nitrogen emission threshold for aquaculture pollution in the unit;

[0078] The formula for calculating the phosphorus pollution emission threshold in the aquaculture pollution emission threshold of the optimization unit within the target watershed is as follows:

[0079] Y i-P =F P / (1-R lake ) / (1-R river );

[0080] Among them, Y i-P To optimize the phosphorus emission threshold for aquaculture pollution in the unit.

[0081] In one example, the pollution load threshold of aquaculture entering the lake is determined by combining the threshold threshold of aquaculture entering the lake in the watershed with the contribution ratio of each optimization unit to the pollution load of aquaculture entering the lake in the watershed. The pollution discharge threshold of aquaculture in each optimization unit is then determined by combining the watershed inflow coefficient.

[0082] Step S5: Based on the nitrogen inflow threshold, phosphorus inflow threshold, nitrogen pollution load contribution ratio, and phosphorus pollution load contribution ratio, obtain the aquaculture inflow pollution load threshold for any optimization unit; based on the aquaculture inflow pollution load threshold and the target watershed inflow coefficient, obtain the aquaculture pollution emission threshold for any optimization unit.

[0083] The formula for calculating the nitrogen emission reduction target of the aforementioned livestock pollution emission reduction target is: X i-N =L N - Y i-N ;

[0084] Among them, X i-N To optimize the nitrogen emission reduction target for aquaculture pollution in the unit;

[0085] The formula for calculating the phosphorus emission reduction target of the aforementioned livestock pollution emission reduction target is: X i-P =L P - Yi-P ;

[0086] Among them, X i-P To optimize the target amount of phosphorus emission reduction for aquaculture pollution in the unit.

[0087] Step S6: Based on the aforementioned aquaculture pollution emission threshold, obtain the aquaculture pollution emission reduction target for any optimization unit; determine whether the aquaculture pollution emission reduction target for any optimization unit is greater than 0; if yes, determine it as an optimization unit that needs to reduce the emission target; if no, determine it as an optimization unit that needs to increase the emission target.

[0088] In one example, based on the current emission levels of aquaculture pollution in each optimization unit and by comparing them with the emission thresholds of aquaculture pollution in each optimization unit, the emission reduction targets for aquaculture pollution in each optimization unit are determined, and optimization units that need to reduce emissions (reduction targets are positive values) and optimization units with receiving potential (reduction targets are negative values) are identified.

[0089] Step S7: Preset that the number of livestock and poultry in N optimization units remains unchanged, relocate the livestock farming of the optimization units that need to reduce emission targets to the optimization units that need to increase emission targets, or adjust the first livestock and poultry ratio of the optimization units that need to reduce emission targets and the second livestock and poultry ratio of the optimization units that need to increase emission targets, and obtain the nitrogen and phosphorus emissions of any optimization unit after adjustment.

[0090] In one example, the waste discharge equivalent coefficient for pigs is used to convert the waste discharge of different types of livestock and poultry into a uniform pig waste discharge equivalent.

[0091] L PO =N liv / N pou ;

[0092] Among them, L PO For the regional livestock-poultry ratio, N liv N represents the number of livestock equivalent pigs raised. pou This refers to the number of poultry equivalent pigs raised.

[0093] In one example, while keeping the pig equivalent in the watershed constant, the spatial distribution of aquaculture is adjusted (optimization unit). Under the premise of keeping the number of livestock raised (pig equivalent) constant, some units with significant pollution from livestock and poultry farming entering the lake are relocated to other areas, and the spatial distribution of aquaculture is optimized to protect the target water body.

[0094] First, determine whether the nitrogen and phosphorus emissions from aquaculture in each zone exceed the emission threshold. If they do, transfer the number of aquaculture units with positive reduction targets to units with negative reduction targets, thus achieving a reduction target of 0 or negative for each unit. If the nitrogen and phosphorus emissions from aquaculture in each zone do not exceed the emission threshold, no adjustment is needed. Maintain the overall aquaculture scale across the watershed while adjusting the spatial distribution of aquaculture.

[0095] To maintain a constant pig equivalent in each optimization unit, the livestock-poultry ratio is adjusted. First, the livestock-poultry ratio for the watershed is obtained. This ratio can be determined based on the response relationship between nitrogen and phosphorus emission loads from livestock farming and the livestock-poultry ratio, combined with regional nitrogen and phosphorus emission thresholds. The livestock-poultry ratio is adjusted according to the target water quality. If increasing the livestock-poultry ratio increases the pollution contribution to the target water body, the ratio is decreased while maintaining a constant pig equivalent in each optimization unit. Conversely, if decreasing the livestock-poultry ratio increases the pollution contribution to the target water body, the ratio is increased while maintaining a constant pig equivalent in each optimization unit. Based on the response relationship between livestock type (livestock-poultry ratio) and livestock pollution emissions, the reduction target for each optimization unit is reduced to 0 or a negative value by changing the livestock-poultry ratio.

[0096] Step S8: Determine whether the nitrogen and phosphorus emissions of any optimized unit after adjustment are greater than the livestock pollution emission threshold; if yes, reduce the number of livestock and poultry raised in each optimized unit; if no, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each livestock and poultry species in the target watershed".

[0097] In one example, if the above still fails to achieve the goal, the number of animals raised in each optimization unit is reduced. First, it is determined whether the nitrogen and phosphorus emissions from animal husbandry in the optimization unit are greater than the nitrogen and phosphorus emission thresholds for the zone. If they exceed the emission thresholds, the excess emissions are converted into pig equivalents, and the number of animals raised in the zone is reduced so that the reduction target for each optimization unit is 0 or a negative value.

[0098] The reduction in the number of livestock farms was determined using the following methods:

[0099] The formula for reducing the number of livestock and poultry raised in each optimization unit is as follows:

[0100] V i-N = X i-N / A i-N V i-P = X i-P / A i-P ;

[0101] Among them, V i-N To reduce the number of livestock farms exceeding nitrogen pollution levels, V i-P This is based on the reduction of livestock numbers exceeding phosphorus pollution levels.

[0102] Example 2

[0103] A computer device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the watershed aquaculture pattern optimization management method in Embodiment 1.

[0104] Example 3

[0105] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the watershed aquaculture pattern optimization management method of Embodiment 1.

[0106] Example 4

[0107] A computer program product includes a computer program that, when executed by a processor, implements the watershed aquaculture pattern optimization management method of Example 1.

[0108] Example 5

[0109] A computer device, which may be a database, may have an internal structure diagram as shown below. Figure 2 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores pending transactions. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements the watershed aquaculture pattern optimization management method in Example 1.

[0110] It should be noted that the object information (including but not limited to object device information, object personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this invention are all information and data authorized by the object or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0111] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided by this invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided by this invention may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided by this invention may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0112] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0113] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for optimizing the management of aquaculture patterns in watersheds, characterized in that, The optimized management method for watershed aquaculture patterns includes: Obtain aquaculture area data for the entire watershed, and divide the watershed into N optimization units based on the aquaculture area data. Based on the target water quality nitrogen threshold for entering the lake, the target water quality phosphorus threshold for entering the lake, the proportion of nitrogen threshold for entering the lake in livestock and poultry farming, the proportion of phosphorus threshold for entering the lake in livestock and poultry farming, and the total amount of water entering the lake, the nitrogen threshold and phosphorus threshold for entering the lake in the whole basin are obtained. Based on the spatial distribution data of various livestock and poultry species within the target watershed and the pollution discharge coefficients of various livestock and poultry species, the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of various livestock and poultry species within the target watershed are obtained. Based on the spatial distribution characteristics of nitrogen emissions, the spatial distribution characteristics of phosphorus emissions, and the lake inflow coefficient of the target watershed, the contribution ratios of nitrogen pollution load and phosphorus pollution load from livestock and poultry farming to the target water body in any optimized unit within the target watershed are obtained. Based on the nitrogen inflow threshold, phosphorus inflow threshold, nitrogen pollution load contribution ratio, and phosphorus pollution load contribution ratio, the aquaculture inflow pollution load threshold for any optimization unit is obtained; based on the aquaculture inflow pollution load threshold and the target watershed inflow coefficient, the aquaculture pollution emission threshold for any optimization unit is obtained. Based on the aforementioned pollution emission threshold for aquaculture, the pollution emission reduction target for any optimization unit is obtained; it is then determined whether the pollution emission reduction target for any optimization unit is greater than 0; if so, it is determined to be an optimization unit that needs to reduce its emission target; if not, it is determined to be an optimization unit that needs to increase its emission target. With the number of livestock and poultry raised in N optimization units remaining unchanged, the livestock farming in the optimization units that need to reduce emission targets will be relocated to the optimization units that need to increase emission targets. Alternatively, the first livestock and poultry ratio of the optimization units that need to reduce emission targets and the second livestock and poultry ratio of the optimization units that need to increase emission targets will be adjusted to obtain the nitrogen and phosphorus emissions of any optimization unit after adjustment. Determine whether the nitrogen and phosphorus emissions of any optimized unit after adjustment are greater than the livestock pollution emission threshold; if so, reduce the number of livestock and poultry raised in each optimized unit; if not, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each livestock and poultry species in the target watershed"; The formula for calculating the nitrogen inflow threshold is: F N =C N0 *R*T / 10; Among them, F N To determine the nitrogen inflow threshold for livestock and poultry farming across the entire watershed, C N0 R represents the nitrogen concentration of the target water body, R represents the proportion of pollutants entering the lake from livestock and poultry farming in the current year, and T represents the total amount of water entering the lake in the current year. The formula for calculating the phosphorus inflow threshold is: F P =C P0 *R*T / 10; Among them, F P To determine the phosphorus inflow threshold for livestock and poultry farming across the entire watershed, C P0 R represents the phosphorus concentration of the target water body and the target water quality, and R represents the proportion of pollutants entering the lake from livestock and poultry farming in the current year. The formula for calculating the contribution ratio of nitrogen pollution load is: L N = ×(1-R river )×(1-R lake ); Among them, L N To optimize the nitrogen pollution load contribution value of the unit, N i D represents the number of animals raised, and A represents the breeding cycle. i-N R represents the daily direct nitrogen emission coefficient for various livestock and poultry species. river R is the attenuation coefficient of livestock and poultry manure pollutants entering the river. lake The attenuation coefficient of livestock and poultry manure pollutants entering the lake; The formula for calculating the contribution ratio of phosphorus pollution load is: L P = ×(1-R river )×(1-R lake ); Among them, L P To optimize the phosphorus pollution load contribution value of the unit, A i-P The daily direct phosphorus emission coefficient for various types of livestock and poultry; The formula for calculating the nitrogen pollution emission threshold in the aforementioned aquaculture pollution emission threshold is: Y i-N =F N / (1-R lake ) / (1-R river ); Among them, Y i-N To optimize the nitrogen emission threshold for aquaculture pollution in the unit; The formula for calculating the phosphorus pollution emission threshold in the aforementioned aquaculture pollution emission threshold is: Y i-P =F P / (1-R lake ) / (1-R river ); Among them, Y i-P To optimize the phosphorus emission threshold for aquaculture pollution in the unit; The formula for calculating the nitrogen emission reduction target of the aforementioned livestock pollution emission reduction target is: X i-N =L N -Y i-N ; Among them, X i-N To optimize the nitrogen emission reduction target for aquaculture pollution in the unit; The formula for calculating the phosphorus emission reduction target of the aforementioned livestock pollution emission reduction target is: X i-P =L P -Y i-P ; Among them, X i-P To optimize the target amount of phosphorus emission reduction for aquaculture pollution in the unit; Adjusting the first livestock ratio for optimization units that need to reduce emission targets and the second livestock ratio for optimization units that need to increase emission targets, specifically includes: L PO =N liv / N pou ; Among them, L PO N represents the regional livestock-poultry ratio. liv N represents the number of livestock equivalents raised in pig farming. pou This refers to the number of poultry-to-pig equivalents raised; The formula for reducing the number of livestock and poultry raised in each optimization unit is as follows: V i-N = X i-N / A i-N ;V i-P = X i-P / A i-P ; Among them, V i-N To reduce the number of livestock farms exceeding nitrogen pollution levels, V i-P This is based on the reduction of livestock numbers exceeding phosphorus pollution levels.

2. A computer system, comprising: The memory and processor contain a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the watershed aquaculture pattern optimization management method of claim 1.

3. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the watershed aquaculture pattern optimization management method as described in claim 1.

4. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the watershed aquaculture pattern optimization management method as described in claim 1.

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