Basin breeding pattern optimization management method and system, medium and product

Abstract

The invention discloses a watershed breeding pattern optimization management method and system, a medium and a product, and relates to the field of livestock breeding. Obtaining a nitrogen into lake threshold value and a phosphorus into lake threshold value; obtaining nitrogen emission space distribution characteristics and phosphorus emission space distribution characteristics; obtaining a nitrogen pollution load contribution ratio and a phosphorus pollution load contribution ratio; obtaining a culture lake-entering pollution load threshold value; obtaining a breeding pollution discharge threshold value; a breeding pollution emission reduction target is obtained; judging whether the breeding pollution emission reduction target is greater than 0 or not; the breeding industry of the optimization unit needing to reduce the emission target is moved to the optimization unit needing to improve the emission target in different places, or the first livestock and poultry ratio of the optimization unit needing to reduce the emission target and the second livestock and poultry ratio of the optimization unit needing to improve the emission target are adjusted; and judging whether the nitrogen emission amount and the phosphorus emission amount of any one optimization unit after adjustment are greater than the breeding pollution emission threshold. The method improves the management efficiency and accuracy of watershed breeding.

Description

Technical Field

[0001] The present invention relates to the technical field of animal husbandry, and in particular to a method, system, medium and product for optimizing the management of a watershed breeding pattern. Background Art

[0002] The rapid development of livestock and poultry farming has brought tremendous pressure to my country's ecological environment, especially the impact on the water environment. Agricultural non-point source pollution in river basins dominated by aquaculture has gradually become one of the important constraints for further improvement of the surface water environment. At the same time, how to maintain reasonable production of aquaculture while reducing its environmental impact is an important scientific proposition. Summary of the invention

[0003] The purpose of the present 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 management of aquaculture patterns in a watershed, the method comprising:

[0006] Obtain the aquaculture area data of the entire river basin, and divide it into N optimization units according to the aquaculture area data of the entire river basin;

[0007] According to the target water quality nitrogen entry threshold for the whole basin, the target water quality phosphorus entry threshold for the whole basin, the proportion of nitrogen entry threshold for livestock and poultry breeding, the proportion of phosphorus entry threshold for livestock and poultry breeding and the total amount of water entering the lake, the nitrogen entry threshold and phosphorus entry threshold for livestock and poultry breeding in the whole basin were obtained;

[0008] According to the spatial distribution data of various livestock and poultry species in the target watershed and the pollution emission coefficients of various livestock and poultry species, the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of various livestock and poultry species in the target watershed are obtained;

[0009] According to the spatial distribution characteristics of nitrogen emissions, phosphorus emissions and the target watershed into the lake coefficient, the contribution ratio of nitrogen pollution load and phosphorus pollution load of livestock and poultry farming in any optimized unit in the target watershed into the target water body were obtained;

[0010] According to the nitrogen inlet threshold, phosphorus inlet threshold, nitrogen pollution load contribution ratio and phosphorus pollution load contribution ratio, the aquaculture inlet pollution load threshold of any optimization unit is obtained; according to the aquaculture inlet pollution load threshold and the target basin inlet coefficient, the aquaculture pollution emission threshold of any optimization unit is obtained;

[0011] According to the aquaculture pollution emission threshold, the aquaculture pollution emission reduction target of any optimization unit is obtained; whether the aquaculture pollution emission reduction target of any optimization unit is greater than 0; if so, it is determined as an optimization unit that needs to reduce the emission target; if not, it is determined as an optimization unit that needs to increase the emission target;

[0012] The number of livestock and poultry breeding in the preset N optimization units remains unchanged, and the breeding industry of the optimization unit that needs to reduce the emission target is relocated to the optimization unit that needs to increase the emission target, or the first livestock and poultry ratio of the optimization unit that needs to reduce the emission target and the second livestock and poultry ratio of the optimization unit that needs to increase the emission target are adjusted to obtain the nitrogen emission and phosphorus emission of any optimization unit after adjustment;

[0013] Determine whether the nitrogen emissions and phosphorus emissions of any optimized unit after adjustment are greater than the aquaculture pollution emission threshold; if so, reduce the number of livestock and poultry breeding in each optimized unit; if not, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each type of livestock and poultry in the target watershed."

[0014] Optionally, the calculation formula for the nitrogen entry threshold is:

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

[0016] Among them, F ij-N is the nitrogen entry threshold for livestock and poultry farming in the entire target basin, C N0 is the nitrogen concentration of the target water quality, R ij is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year, and T is the total amount of water entering the lake that year;

[0017] The calculation formula for the phosphorus entry threshold is:

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

[0019] Among them, F ij-P is the phosphorus entry threshold for livestock and poultry breeding in the entire target basin, C P0 is the phosphorus concentration of the target water quality, R ij It is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year.

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

[0021]

[0022] Among them, L Nis the nitrogen pollution load contribution value of the optimization unit, N i is the number of breeding, T is the breeding cycle, P i-N is the daily direct nitrogen excretion coefficient of various livestock and poultry, R river is the attenuation coefficient of livestock and poultry manure pollutants entering the river, R lake is the attenuation coefficient of livestock and poultry manure pollutants entering the lake;

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

[0024]

[0025] Among them, L P is the phosphorus pollution load contribution value of the optimization unit, P i-P It is the daily direct excretion coefficient of phosphorus of various livestock and poultry.

[0026] Optionally, the calculation formula for the nitrogen pollution emission threshold in the aquaculture pollution emission threshold is:

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

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

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

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

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

[0032] Optionally, the calculation formula for the nitrogen emission reduction target of the aquaculture pollution emission reduction target is: i-N =L N -Y i-N ;

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

[0034] The calculation formula for the phosphorus emission reduction target of the aquaculture pollution emission reduction target is: i-P =L P -Y i-P ;

[0035] Among them, Xi-P To optimize the target reduction amount of aquaculture pollution phosphorus emissions in the unit.

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

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

[0038] Among them, L PO is the regional livestock and poultry ratio, N liv is the number of pigs raised as livestock, N pou It is the number of poultry and pig equivalent raised.

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

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

[0041] Among them, V i-N To reduce the amount of nitrogen pollution caused by aquaculture, V i-P To reduce the amount of aquaculture that exceeds phosphorus pollution.

[0042] A computer system comprises: 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 method for optimizing the management of watershed aquaculture patterns.

[0043] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the method for optimizing the management of aquaculture patterns in a watershed.

[0044] A computer program product includes a computer program, which, when executed by a processor, implements the method for optimizing the management of watershed aquaculture patterns.

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

[0046] The present invention discloses a method, system, medium and product for optimizing the management of aquaculture pattern in a watershed, which divides the watershed into N optimization units; obtains a nitrogen inflow threshold and a phosphorus inflow threshold; obtains a nitrogen emission spatial distribution characteristic and a phosphorus emission spatial distribution characteristic; obtains a nitrogen pollution load contribution ratio and a phosphorus pollution load contribution ratio; obtains a pollution load threshold for aquaculture inflow to a lake; obtains an aquaculture pollution emission threshold; obtains an aquaculture pollution emission reduction target; judges whether the aquaculture pollution emission reduction target is greater than 0; relocates the aquaculture industry of an optimization unit that needs to reduce the emission target to an optimization unit that needs to increase the emission target, or adjusts a first livestock and poultry ratio of an optimization unit that needs to reduce the emission target and a second livestock and poultry ratio of an optimization unit that needs to increase the emission target, and judges whether the nitrogen emission and phosphorus emission of any optimization unit after the adjustment are greater than the aquaculture pollution emission threshold. The present invention improves the management efficiency and accuracy of watershed aquaculture, provides a scientific method and theoretical basis for adjusting the watershed aquaculture structure, and lays a foundation for the green and high-quality development of the watershed aquaculture industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic diagram of a flow chart of a method for optimizing management of aquaculture patterns in a watershed provided by an embodiment of the present invention;

[0049] Figure 2 An internal structure diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The purpose of the present 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] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Example 1

[0054] like Figure 1 As shown, the method for optimizing the management of watershed aquaculture pattern in this embodiment comprises the following specific steps:

[0055] Step S1: Obtain the aquaculture area data of the entire river basin, and divide it into N optimization units according to the aquaculture area data of the entire river basin;

[0056] In one example, if the number of administrative counties in the whole river basin is greater than or equal to N, the optimized unit of river basin aquaculture pattern is the county; if the number of administrative counties in the whole river basin is less than N and the number of administrative towns is greater than or equal to N, the optimized unit of river basin aquaculture pattern is the town; if the number of administrative towns in the whole river basin is less than N, the optimized unit of river basin aquaculture pattern 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: according to the target water quality nitrogen inlet threshold of the whole basin, the target water quality phosphorus inlet threshold of the whole basin, the proportion of the nitrogen inlet threshold of livestock and poultry breeding, the proportion of the phosphorus inlet threshold of livestock and poultry breeding and the total amount of water entering the lake, the nitrogen inlet threshold and phosphorus inlet threshold of livestock and poultry breeding in the whole basin are obtained;

[0058] The calculation formula for the nitrogen entry threshold is:

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

[0060] Among them, F ij-N is the nitrogen entry threshold for livestock and poultry breeding in the entire target basin (t), C N0 is the nitrogen concentration of the target water quality (mg / L), R ij is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year (%), and T is the total amount of water entering the lake that year (t);

[0061] The calculation formula for the phosphorus entry threshold is:

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

[0063] Among them, F ij-P is the phosphorus entry threshold for livestock and poultry breeding in the entire target basin (t), C P0 is the phosphorus concentration of the target water quality (mg / L), R ij It is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year (%).

[0064] In one example, the nitrogen and phosphorus entry thresholds for livestock and poultry farming in the entire basin are determined based on the nitrogen concentration and phosphorus concentration of the target water quality of the target water body and the water quality target of the target water body determined in the guiding planning document. The proportion of pollutants entering the lake from livestock and poultry farming in the basin is obtained from existing literature, and the amount of water entering the lake is obtained from the hydrological department.

[0065] Step S3: according to 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, the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each livestock and poultry species in the target watershed are obtained;

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

[0067]

[0068] Among them, L N is the nitrogen pollution load contribution value of the optimization unit, N i is the number of fish raised (head), T is the feeding period (d), P i-N is the direct nitrogen excretion coefficient of various livestock and poultry (kg head- 1 ·a- 1 ), R river is the attenuation coefficient of livestock and poultry manure pollutants entering the river (%), R lake is the attenuation coefficient of livestock and poultry manure pollutants entering the lake (%);

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

[0070]

[0071] Among them, L P is the phosphorus pollution load contribution value of the optimization unit, P i-P is the daily direct excretion coefficient of phosphorus for various livestock and poultry (kg head -1 ·a -1 ).

[0074] In one example, the spatial distribution of various livestock and poultry species in the target watershed was integrated with the emission coefficients of various livestock and poultry species in the "Handbook of Source and Emission Coefficients of Livestock and Poultry Breeding in the Second National Pollution Source Census" to obtain the spatial distribution characteristics of nitrogen and phosphorus emissions of various livestock and poultry species in the target watershed; then, the proportion of nitrogen pollution load and phosphorus pollution load contribution of livestock and poultry breeding in each optimized unit in the watershed entering the target water body were calculated based on the obtained watershed lake entry coefficient.

[0075] The river entry coefficient and lake entry coefficient of nitrogen and phosphorus from the original site to the target water body of the target optimization unit are obtained based on literature analysis.

[0076] Step S4: according to the spatial distribution characteristics of nitrogen emissions, the spatial distribution characteristics of phosphorus emissions and the target watershed into the lake coefficient, the contribution ratio of nitrogen pollution load and phosphorus pollution load of livestock and poultry breeding in any optimization unit in the target watershed into the target watershed are obtained;

[0077] The calculation formula for the nitrogen pollution emission threshold in the aquaculture pollution emission threshold of the optimized unit in the target watershed is:

[0078] Y i-N =F ij-N / (1-R lake ) / (1-R river );

[0079] Among them, Y i-N To optimize the nitrogen emission threshold of aquaculture pollution in the unit;

[0080] The calculation formula for the phosphorus pollution emission threshold in the aquaculture pollution emission threshold of the optimized unit in the target watershed is:

[0081] Y i-P =F ij-P / (1-R lake ) / (1-R river );

[0082] Among them, Y i-P To optimize the phosphorus emission threshold of aquaculture pollution in the unit.

[0083] In one example, the pollution load threshold of aquaculture entering the lake from the basin and the contribution ratio of each optimized unit to the pollution load of aquaculture entering the lake from the basin are comprehensively considered to determine the pollution load threshold of aquaculture entering the lake for each optimized unit, and the aquaculture pollution emission threshold of each optimized unit is determined in combination with the basin inflow coefficient.

[0084] Step S5: according to the nitrogen inlet threshold, the phosphorus inlet threshold, the nitrogen pollution load contribution ratio and the phosphorus pollution load contribution ratio, the aquaculture inlet pollution load threshold of any optimization unit is obtained; according to the aquaculture inlet pollution load threshold and the target basin inlet coefficient, the aquaculture pollution emission threshold of any optimization unit is obtained;

[0085] The calculation formula for the nitrogen emission reduction target of the aquaculture pollution emission reduction target is: i-N =L N -Y i-N ;

[0086] Among them, X i-N To optimize the unit's aquaculture pollution nitrogen emission reduction target;

[0087] The calculation formula for the phosphorus emission reduction target of the aquaculture pollution emission reduction target is: i-P =L P -Yi-P ;

[0088] Among them, X i-P To optimize the target reduction amount of aquaculture pollution phosphorus emissions in the unit.

[0089] Step S6: according to the aquaculture pollution emission threshold, obtain the aquaculture pollution emission reduction target of any optimization unit; determine whether the aquaculture pollution emission reduction target of any optimization unit is greater than 0; if so, determine it as an optimization unit that needs to reduce the emission target; if not, determine it as an optimization unit that needs to increase the emission target;

[0090] In one example, the aquaculture pollution emission reduction target of each optimization unit is determined according to the current aquaculture pollution emission of each optimization unit and compared with the aquaculture pollution emission threshold of each optimization unit, and the optimization units that need to reduce emissions (reduction targets are positive values) and the optimization units with receiving potential (reduction targets are negative values) are identified.

[0091] Step S7: The number of livestock and poultry breeding in the preset N optimization units remains unchanged, and the breeding industry of the optimization unit that needs to reduce the emission target is relocated to the optimization unit that needs to increase the emission target, or the first livestock and poultry ratio of the optimization unit that needs to reduce the emission target and the second livestock and poultry ratio of the optimization unit that needs to increase the emission target are adjusted to obtain the nitrogen emission and phosphorus emission of any optimization unit after adjustment;

[0092] In one example, the pig waste equivalent coefficient is used to convert the waste emissions of different types of livestock and poultry into a unified pig waste equivalent.

[0093] L PO =N liv / N pou ;

[0094] Among them, L PO is the regional livestock and poultry ratio, N liv is the number of pigs raised as livestock, N pou It is the number of poultry and pig equivalent raised.

[0095] In one example, the pig equivalent in the basin remains unchanged and the distribution space of breeding is adjusted (optimized unit). Under the premise of ensuring that the breeding quantity (pig equivalent) remains unchanged, the breeding industry in some units with large pollution from livestock and poultry breeding entering the lake is relocated to other places, and the distribution space of breeding is optimized to achieve the protection of the target water body.

[0096] First, determine whether the nitrogen and phosphorus emissions of the aquaculture in the sub-area are greater than the emission threshold. If the emission threshold is exceeded, the reduction target of each optimization unit is 0 or negative by transferring the number of aquaculture in the optimization unit with a positive reduction target to the optimization unit with a negative reduction target. If the nitrogen and phosphorus emissions of the aquaculture in the sub-area do not exceed the emission threshold, no adjustment is required. Ensure that the aquaculture scale of the entire basin remains unchanged and adjust the spatial distribution of aquaculture.

[0097] Keep the pig equivalent of each optimization unit unchanged by adjusting the livestock and poultry ratio. First, obtain the livestock and poultry ratio of the basin. The method for determining the livestock and poultry ratio can be determined based on the response relationship between the nitrogen and phosphorus emission load of aquaculture and the livestock and poultry ratio, combined with the emission threshold of nitrogen and phosphorus in aquaculture in different regions. Adjust the livestock and poultry ratio according to the target water quality. If the contribution of target water pollution increases when the livestock and poultry ratio increases, the livestock and poultry ratio will be reduced while keeping the pig equivalent of each optimization unit unchanged; if the contribution of target water pollution increases when the livestock and poultry ratio decreases, the livestock and poultry ratio will be increased while keeping the pig equivalent of each optimization unit unchanged. Based on the response relationship between livestock and poultry type (livestock and poultry ratio) and aquaculture pollution emissions, the reduction target of each optimization unit is achieved to be 0 or a negative value by changing the livestock and poultry ratio.

[0098] Step S8: Determine whether the nitrogen emissions and phosphorus emissions of any optimized unit after adjustment are greater than the aquaculture pollution emission threshold; if so, reduce the number of livestock and poultry breeding in each optimized unit; if not, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each type of livestock and poultry in the target watershed."

[0099] In one example, if the above still cannot achieve the goal, the number of breeding in each optimization unit is reduced. First, it is determined whether the nitrogen and phosphorus emissions of the breeding industry in the optimization unit are greater than the nitrogen and phosphorus emission thresholds of the sub-area breeding. If the emission threshold is exceeded, the excess emissions are converted into pig equivalents, and the number of breeding in the sub-area is reduced, so that the reduction target of each optimization unit is 0 or a negative value.

[0100] The reduction in the number of breeding stocks is determined by the following method:

[0101] The calculation formula for reducing the number of livestock and poultry breeding in each optimization unit is:

[0102] V i-N =X i-N / P i-N ; V i-P =X i-P / P i-P ;

[0103] Among them, V i-N To reduce the amount of nitrogen pollution caused by aquaculture, V i-P To reduce the amount of aquaculture that exceeds phosphorus pollution.

[0104] Example 2

[0105] 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 method for optimizing the management of aquaculture patterns in a watershed in Example 1.

[0106] Example 3

[0107] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for optimizing the management of aquaculture patterns in a watershed in Example 1.

[0108] Example 4

[0109] A computer program product includes a computer program, which, when executed by a processor, implements the method for optimizing the management of watershed aquaculture patterns in Example 1.

[0110] Example 5

[0111] A computer device, which may be a database, may have an internal structure as shown in Figure 2 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store pending transactions. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the method for optimizing the management of the watershed aquaculture pattern in Example 1 is implemented.

[0112] 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, stored data, displayed data, etc.) involved in the present invention are all information and data authorized by the object or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0113] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided by the present 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), magnetoresistive 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided by the present invention may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited thereto. The processor involved in each embodiment provided by the present invention may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited thereto.

[0114] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0115] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for optimizing the management of watershed aquaculture patterns, characterized in that: The method for optimizing the management of watershed aquaculture pattern comprises: Obtain the aquaculture area data of the entire river basin, and divide it into N optimization units according to the aquaculture area data of the entire river basin; According to the target water quality nitrogen entry threshold for the whole basin, the target water quality phosphorus entry threshold for the whole basin, the proportion of nitrogen entry threshold for livestock and poultry breeding, the proportion of phosphorus entry threshold for livestock and poultry breeding and the total amount of water entering the lake, the nitrogen entry threshold and phosphorus entry threshold for livestock and poultry breeding in the whole basin were obtained; According to the spatial distribution data of various livestock and poultry species in the target watershed and the pollution emission coefficients of various livestock and poultry species, the spatial distribution characteristics of nitrogen emissions and phosphorus emissions of various livestock and poultry species in the target watershed are obtained; According to the spatial distribution characteristics of nitrogen emissions, phosphorus emissions and the target watershed into the lake coefficient, the contribution ratio of nitrogen pollution load and phosphorus pollution load of livestock and poultry farming in any optimized unit in the target watershed into the target water body were obtained; According to the nitrogen inlet threshold, phosphorus inlet threshold, nitrogen pollution load contribution ratio and phosphorus pollution load contribution ratio, the aquaculture inlet pollution load threshold of any optimization unit is obtained; according to the aquaculture inlet pollution load threshold and the target basin inlet coefficient, the aquaculture pollution emission threshold of any optimization unit is obtained; According to the aquaculture pollution emission threshold, the aquaculture pollution emission reduction target of any optimization unit is obtained; whether the aquaculture pollution emission reduction target of any optimization unit is greater than 0; if so, it is determined as an optimization unit that needs to reduce the emission target; if not, it is determined as an optimization unit that needs to increase the emission target; The number of livestock and poultry breeding in the preset N optimization units remains unchanged, and the breeding industry of the optimization unit that needs to reduce the emission target is relocated to the optimization unit that needs to increase the emission target, or the first livestock and poultry ratio of the optimization unit that needs to reduce the emission target and the second livestock and poultry ratio of the optimization unit that needs to increase the emission target are adjusted to obtain the nitrogen emission and phosphorus emission of any optimization unit after adjustment; Determine whether the nitrogen emissions and phosphorus emissions of any optimized unit after adjustment are greater than the aquaculture pollution emission threshold; if so, reduce the number of livestock and poultry breeding in each optimized unit; if not, continue to obtain the "spatial distribution characteristics of nitrogen emissions and phosphorus emissions of each type of livestock and poultry in the target watershed".

2. The method for optimizing the management of watershed aquaculture patterns according to claim 1, characterized in that: The calculation formula for the nitrogen entry threshold is: F ij-N =C N0 *R ij *T / 10; Among them, F ij-N is the nitrogen entry threshold for livestock and poultry farming in the entire target basin, C N0 is the nitrogen concentration of the target water quality, R ij is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year, and T is the total amount of water entering the lake that year; The calculation formula for the phosphorus entry threshold is: F ij-P =C P0 *R ij *T / 10; Among them, F ij-P is the phosphorus entry threshold for livestock and poultry breeding in the entire target basin, C P0 is the phosphorus concentration of the target water quality, R ij It is the proportion of pollutants entering the lake from livestock and poultry breeding in the basin that year.

3. The method for optimizing the management of watershed aquaculture patterns according to claim 2, characterized in that: The calculation formula for the nitrogen pollution load contribution ratio is: Among them, L N is the nitrogen pollution load contribution value of the optimization unit, N i is the number of breeding, T is the breeding cycle, P i-N is the daily direct nitrogen excretion coefficient of various livestock and poultry, R river is the attenuation coefficient of livestock and poultry manure pollutants entering the river, R lake is the attenuation coefficient of pollutants from livestock and poultry manure entering the lake; The calculation formula for the phosphorus pollution load contribution ratio is: Among them, L P is the phosphorus pollution load contribution value of the optimization unit, P i-P It is the daily direct excretion coefficient of phosphorus of various livestock and poultry.

4. The method for optimizing the management of watershed aquaculture patterns according to claim 3, characterized in that: The calculation formula for the nitrogen pollution emission threshold in the aquaculture pollution emission threshold is: Y i-N =F ij-N / (1-R lake ) / (1-R river ); Among them, Y i-N To optimize the nitrogen emission threshold of aquaculture pollution in the unit; The calculation formula for the phosphorus pollution emission threshold in the aquaculture pollution emission threshold is: Y i-P =F ij-P / (1-R lake ) / (1-R river ); Among them, Y i-P To optimize the phosphorus emission threshold of aquaculture pollution in the unit.

5. The method for optimizing the management of watershed aquaculture patterns according to claim 4, characterized in that: The calculation formula for the nitrogen emission reduction target of the aquaculture pollution emission reduction target is: i-N =L N -Y i-N ; Among them, X i-N To optimize the unit's aquaculture pollution nitrogen emission reduction target; The calculation formula for the phosphorus emission reduction target of the aquaculture pollution emission reduction target is: i-P =L P -Y i-P ; Among them, X i-P To optimize the target reduction amount of aquaculture pollution phosphorus emissions in the unit.

6. The method for optimizing the management of watershed aquaculture patterns according to claim 5, characterized in that: Adjusting the first livestock-poultry ratio of the optimization unit that needs to reduce the emission target and the second livestock-poultry ratio of the optimization unit that needs to increase the emission target specifically includes: L PO =N liv / N pou ; Among them, L PO is the regional livestock and poultry ratio, N liv is the number of pigs raised, N pou It is the equivalent number of poultry and pigs raised.

7. The method for optimizing the management of watershed aquaculture patterns according to claim 6, characterized in that: The calculation formula for reducing the number of livestock and poultry breeding in each optimization unit is: V i-N =X i-N / P i-N ;V i-P =X i-P / P i-P ; Among them, V i-N To reduce the amount of aquaculture that exceeds nitrogen pollution, V i-P To reduce the amount of aquaculture that exceeds phosphorus pollution.

8. A computer system comprising: 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 method for optimizing the management of aquaculture patterns in a watershed as described in any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for optimizing the management of watershed aquaculture patterns described in any one of claims 1 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for optimizing the management of watershed aquaculture patterns described in any one of claims 1 to 7 is implemented.

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