Animal husbandry carbon emission influence factor quantification method based on logarithmic mean Dirse index method model

Abstract

The invention discloses an animal husbandry carbon emission influence factor quantification method based on a logarithmic mean Dirse index method model, and relates to the field of animal husbandry carbon emission analysis. The carbon emission data comprises greenhouse gas emission data of intestinal fermentation, energy consumption and excrement management links of various livestock in each province in each period; according to the carbon emission related data, the total greenhouse gas emission amount generated in each link is calculated; based on a logarithmic mean Dirse index method model, the total greenhouse gas emission amount in each link is decomposed into coefficient, technology, structure, demand and population factors, and the influence of each factor on the carbon emission change is calculated respectively. According to the method, microcosmic detailed analysis is carried out on each factor for different processes, the contribution of each factor to carbon emission can be quantified more accurately, and a basis is provided for formulating a scientific and reasonable emission reduction strategy.

Description

Technical Field

[0001] The present invention relates to the technical field of animal husbandry carbon emission analysis, and more particularly to a method for quantifying factors affecting animal husbandry carbon emissions based on a logarithmic mean Dirichlet index model. Background Art

[0002] Against the backdrop of climate change, the issue of carbon emissions from animal husbandry is receiving increasing attention. Intestinal fermentation, energy consumption, manure management and other processes in the livestock breeding process produce large amounts of greenhouse gases. How to effectively quantify and analyze the factors affecting carbon emissions from animal husbandry, and thus identify key emission reduction paths, is one of the hot topics of current research.

[0003] However, while traditional methods can reflect changes in carbon emissions at a macro level, they are limited in their ability to provide detailed analysis, making it difficult to accurately reflect the impact of specific factors in the production process. The livestock production process is complex, involving multiple steps such as intestinal fermentation and manure management, each of which produces a variety of greenhouse gases, including methane and carbon dioxide. Therefore, it is necessary to establish a full life cycle accounting system for livestock carbon emissions based on the characteristics of livestock production, consumption, and waste disposal. This system can meticulously analyze various influencing factors, identify key emission units, optimize carbon emission decomposition analysis methods, and provide more accurate and detailed carbon emission data support.

[0004] Therefore, how to conduct a more scientific and accurate quantitative analysis of the factors affecting carbon emissions in animal husbandry, so as to provide strong support for the formulation of efficient animal husbandry emission reduction strategies, is an issue that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] In view of this, the present invention provides a method for quantifying the factors affecting carbon emissions in animal husbandry based on the logarithmic mean Dirichlet index model, which decomposes carbon emissions in animal husbandry into five major factors: coefficient, technology, structure, demand and population. Each factor is analyzed in detail at the micro level for different processes, so as to more accurately quantify the contribution of each factor to carbon emissions, providing a basis for formulating scientific and reasonable emission reduction strategies.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention discloses a method for quantifying factors affecting carbon emissions from animal husbandry based on a logarithmic mean Dirichlet index model, which is characterized by the following specific steps:

[0008] Obtain carbon emission data for the entire life cycle of animal husbandry, including greenhouse gas emissions from enteric fermentation, energy consumption, and manure management for all types of livestock in all provinces and at all times;

[0009] Calculate the total amount of greenhouse gas emissions generated in each link based on carbon emission data;

[0010] Based on the logarithmic mean Dirichlet index model, the total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors, and the impact of each factor on carbon emission changes is calculated respectively.

[0011] Furthermore, the carbon emission-related data include the number of various types of livestock in each province, feed consumption, animal product output, and the population of each province.

[0012] Furthermore, the total amount of greenhouse gas emissions generated in each link is specifically calculated including: calculating the methane emissions generated by intestinal fermentation, calculating the carbon dioxide emissions generated by energy consumption, and calculating the methane and nitrous oxide emissions generated during feces management.

[0013] Furthermore, the calculation formula for calculating the methane emissions generated by the intestinal fermentation is:

[0014]

[0015] Among them, E ef represents the methane emissions from enteric fermentation, D1 i,j represents the number of livestock of category j in province i, R1 j represents the methane emission factor during enteric fermentation of type j livestock;

[0016] The calculation formula for calculating the carbon dioxide emissions generated by the energy consumption is:

[0017]

[0018] Among them, E ec Indicates the carbon dioxide emissions generated by energy consumption; O electricity,j Indicates the power consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 electricity,i,j represents the carbon dioxide emission factor of electricity consumed by the jth type of livestock in province i; O coal,j Indicates the coal consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 coal represents the carbon dioxide emission factor of coal consumed by the jth type of livestock; O disel,j Indicates the fuel consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 disel represents the CO2 emission factor of diesel consumed by livestock of type j;

[0019] The calculation formula for calculating the methane and nitrous oxide emissions generated during the manure management process is:

[0020]

[0021] in, and R3 represents the methane emissions and nitrous oxide emissions from manure management; i,j K represents the methane emission factor during the management of livestock manure of type j in province i; j Manure production coefficient of livestock of type j, R4 i,j represents the nitrous oxide emission factor during the management of livestock manure of type j in province i.

[0022] Furthermore, the total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors. The factors affecting carbon emissions in animal husbandry specifically include: coefficient factors analyze the carbon emissions generated by consuming unit feed, technology factors analyze the resource consumption required for unit output, structure factors analyze the production ratio of different livestock types, demand factors analyze the product demand corresponding to unit population, and population factors analyze the impact of regional population changes on carbon emissions.

[0023] Furthermore, the calculation of the impact of each factor on carbon emissions changes includes:

[0024] Enteric fermentation decomposition: methane emissions from enteric fermentation in each province and livestock at each time period were converted to carbon dioxide equivalents. Then, based on carbon dioxide equivalents, the factors influencing enteric fermentation methane emissions were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors.

[0025] Energy consumption decomposition: Based on the CO2 emissions of various livestock in various provinces and periods in the energy consumption link, the factors affecting CO2 emissions from energy consumption are decomposed into coefficient factors, technical factors, structural factors, demand factors and population factors.

[0026] Decomposition of manure management: The methane and nitrous oxide emissions of various livestock types in various provinces and at different periods in the manure management stage were converted into carbon dioxide equivalents. Then, based on the carbon dioxide equivalents, the influencing factors of methane and nitrous oxide emissions from manure management were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors.

[0027] Furthermore, the calculation formula for converting to carbon dioxide equivalent is: in, and They represent carbon dioxide equivalent, methane amount and nitrous oxide amount respectively.

[0028] Furthermore, the calculation formula for the decomposition of the intestinal fermentation step is as follows:

[0029]

[0030] ΔE′ ef =E t '-E0'=ΔE' CF +ΔE′ TF +ΔE′ SF +ΔE′ DF +ΔE′ PF (6);

[0031]

[0032] Among them, E′ ef , E′ ij 、 as well as They represent the carbon dioxide equivalent emissions generated by the enteric fermentation process in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; S ij represents the amount of feed consumed by the jth type of livestock in province i in that year, Pr ij represents the output of edible animal products produced by the jth type of livestock in province i in that year, Pr i represents the total output of edible animal products produced by all livestock in province i in that year, P i represents the total population of province i in that year; E′ ij / S ij Indicates the intestinal fermentation coefficient factor, S ij / Pr ij Indicates technical factors, Pr ij / Pr i represents the structural factor, Pr ij / P i represents the demand factor, P i represents the population factor; ΔE e ' f 、E t E′ and E0′ represent the total change of CO2 equivalent in the intestinal fermentation stage, CO2 equivalent in the tth period, and CO2 equivalent in the base period, respectively; ΔE′ CF , ΔE′ TF , ΔE′ SF , ΔE′ DF and ΔE′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors, and population factors in the intestinal fermentation process respectively; represents the coefficient factor of the tth phase of intestinal fermentation, and represent the technical factors, structural factors, demand factors and population factors in period t respectively; CF′ ij0 Indicates the base period coefficient factor of the intestinal fermentation link, and PF i 0 They represent base period technical factors, structural factors, demand factors and population factors respectively.

[0033] Furthermore, the calculation formula for decomposing the energy consumption link is as follows:

[0034]

[0035] ΔE e ″ c =E t "-E0" = ΔE" CF +ΔE″ TF +ΔE″ SF +ΔE″ DF +ΔE″ PF (13);

[0036]

[0037]

[0038] Among them, E e ″ c , E″ ij , E″ ij t and E″ ij 0 U represents the carbon dioxide equivalent emissions generated in the energy consumption link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; U ij E″ represents the energy consumption of the jth type of livestock in province i in that year; ij / U ij Indicates the energy consumption factor, U ij / Pr ij Indicates the technical factors of energy consumption; ΔE e ″ c 、E t ″ and E0″ represent the total change in carbon dioxide equivalent in the energy consumption link, carbon dioxide equivalent in the tth period, and carbon dioxide equivalent in the base period, respectively; ΔE″ CF , ΔE″ TF , ΔE″ SF , ΔE″ DF and ΔE″ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the energy consumption link; CF ij″ t Indicates the coefficient factor of the energy consumption link in period t; CF ij ″ 0 Represents the base period coefficient factor of the energy consumption link.

[0039] Furthermore, the calculation formula for the decomposition of the feces management link is as follows:

[0040]

[0041] ΔE″′ mm =E″′ t -E″′0=ΔE″′ CF +ΔE″′ TF +ΔE″′ SF +ΔE″′ DF +ΔE″′ PF (20);

[0042]

[0043] Among them, E″′ mm , E″′ ij , E″′ ij t and E″′ ij 0 They represent the carbon dioxide equivalent emissions generated by the manure management link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; E″′ ij / S ij Indicates the coefficient factor of the manure management link; ΔE″′ mm , E″′ t and E″′0 represent the total change in CO2 equivalent during manure management, CO2 equivalent in period t, and CO2 equivalent in the base period, respectively; ΔE″′ CF , ΔE″′ TF , ΔE″′ SF , ΔE″′ DF and ΔE″′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the manure management link; CF ij ″′ t represents the coefficient factor of the tth period of the manure management link; CF ij ″′ 0 Represents the base period coefficient factor of the manure management link.

[0044] It can be seen from the above technical solutions that, compared with the existing technology, the present invention discloses a method for quantifying factors affecting carbon emissions in animal husbandry based on the logarithmic mean Dirichlet index model, which has the following advantages: (1) By utilizing the logarithmic mean Dirichlet index model, carbon emissions are decomposed into five major factors, which achieves a refined decomposition of carbon emission impacts and provides a clearer and more specific assessment; (2) The integrity of the data is ensured, and detailed full life cycle carbon emission data is obtained through multiple channels, providing a solid analysis basis; (3) By identifying key high-emission links, targeted emission reduction strategies are proposed, effectively supporting the implementation of the national "dual carbon" strategy; (4) The present invention is not only suitable for scientific research and policy making, but also provides enterprises with tools for optimizing resource allocation, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0046] Figure 1 Schematic diagram of the overall process of an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0048] The embodiment of the present invention discloses a method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model. Figure 1 The specific steps are as follows:

[0049] Obtain carbon emission data for the entire life cycle of animal husbandry, including greenhouse gas emissions from enteric fermentation, energy consumption, and manure management for all types of livestock in all provinces and at all times;

[0050] Calculate the total amount of greenhouse gas emissions generated in each link based on carbon emission data;

[0051] Based on the logarithmic mean Dirichlet index model, the total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors, and the impact of each factor on carbon emission changes is calculated respectively.

[0052] In a specific embodiment, the carbon emission-related data includes the number of various livestock types, feed consumption, animal product output in each province, and the population of each province.

[0053] Specifically, the data acquisition steps cover the entire life cycle, including intestinal fermentation, energy consumption, and manure management, and are obtained through animal husbandry-related statistical data from the China Animal Husbandry and Veterinary Yearbook, the China Rural Statistical Yearbook, and the China Statistical Yearbook. It also includes livestock species and numbers, feed consumption, animal product output, and population data for each province.

[0054] In a specific embodiment, calculating the total amount of greenhouse gas emissions generated in each link specifically includes: calculating the methane emissions generated by intestinal fermentation, calculating the carbon dioxide emissions generated by energy consumption, and calculating the methane and nitrous oxide emissions generated during feces management.

[0055] In a specific embodiment, the calculation formula for calculating the methane emissions from intestinal fermentation is:

[0056]

[0057] Among them, E ef represents the methane emissions from enteric fermentation, D1 i,j represents the number of livestock of category j in province i, R1 j represents the methane emission factor during enteric fermentation of type j livestock;

[0058] The calculation formula for calculating carbon dioxide emissions generated by energy consumption is:

[0059]

[0060] Among them, E ec Indicates the carbon dioxide emissions generated by energy consumption; O electricity,j Indicates the power consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 electricity,i,j represents the carbon dioxide emission factor of electricity consumed by the jth type of livestock in province i; O coal,j Indicates the coal consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 coal represents the carbon dioxide emission factor of coal consumed by the jth type of livestock; O disel,j Indicates the fuel consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 disel represents the CO2 emission factor of diesel consumed by livestock of type j;

[0061] The calculation formula for calculating methane and nitrous oxide emissions from manure management is:

[0062]

[0063] in, and R3 represents the methane emissions and nitrous oxide emissions from manure management; i,j K represents the methane emission factor during the management of livestock manure of type j in province i; j Manure production coefficient of livestock of type j, R4 i,j represents the nitrous oxide emission factor during the management of livestock manure of type j in province i.

[0064] In a specific embodiment, the total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors. The factors affecting carbon emissions in animal husbandry specifically include: coefficient factors analyze the carbon emissions generated by consuming unit feed, technology factors analyze the resource consumption required for unit output, structure factors analyze the production ratio of different livestock types, demand factors analyze the product demand corresponding to unit population, and population factors analyze the impact of regional population changes on carbon emissions.

[0065] In a specific embodiment, the impact of each factor on carbon emission changes is calculated separately, including:

[0066] Enteric fermentation decomposition: methane emissions from enteric fermentation in each province and livestock at each time period were converted to carbon dioxide equivalents. Then, based on carbon dioxide equivalents, the factors influencing enteric fermentation methane emissions were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors.

[0067] Energy consumption decomposition: Based on the CO2 emissions of various livestock in various provinces and periods in the energy consumption link, the factors affecting CO2 emissions from energy consumption are decomposed into coefficient factors, technical factors, structural factors, demand factors and population factors.

[0068] Decomposition of manure management: The methane and nitrous oxide emissions of various livestock types in various provinces and at different periods in the manure management stage were converted into carbon dioxide equivalents. Then, based on the carbon dioxide equivalents, the influencing factors of methane and nitrous oxide emissions from manure management were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors.

[0069] In a specific embodiment, the calculation formula for conversion to carbon dioxide equivalent is: in, and They represent carbon dioxide equivalent, methane amount and nitrous oxide amount respectively.

[0070] In a specific embodiment, the calculation formula for the decomposition of the intestinal fermentation step is as follows:

[0071]

[0072] ΔE′ ef =E t '-E0'=ΔE' CF +ΔE′ TF +ΔE′ SF +ΔE′ DF +ΔE′ PF (6);

[0073]

[0074]

[0075] Among them, E′ ef , E′ ij 、 and E′ ij 0 They represent the carbon dioxide equivalent emissions generated by the enteric fermentation process in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; S ij represents the amount of feed consumed by the jth type of livestock in province i in that year, Pr ij represents the output of edible animal products produced by the jth type of livestock in province i in that year, Pr i represents the total output of edible animal products produced by all livestock in province i in that year, P i represents the total population of province i in that year; E′ ij / S ij Indicates the intestinal fermentation coefficient factor, S ij / Pr ij Indicates technical factors, Pr ij / Pr i represents the structural factor, Pr ij / P i represents the demand factor, P i represents the population factor; ΔE′ ef , E′ t and E′0 represent the total change of CO2 equivalent in the intestinal fermentation stage, CO2 equivalent in the tth period, and CO2 equivalent in the base period, respectively; ΔE′ CF , ΔE′ TF , ΔE′ SF , ΔE′ DF and ΔE′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the intestinal fermentation process; CF ij ' t represents the coefficient factor of the tth phase of intestinal fermentation, and represent the technical factors, structural factors, demand factors and population factors in period t respectively; CF ij ' 0 Indicates the base period coefficient factor of the intestinal fermentation link, and PF i 0 They represent base period technical factors, structural factors, demand factors and population factors respectively.

[0076] In a specific embodiment, the calculation formula for decomposing the energy consumption link is as follows:

[0077]

[0078] ΔE″ ec =E t "-E0" = ΔE" CF +ΔE″ TF +ΔE″ SF +ΔE″ DF +ΔE″ PF (13);

[0079]

[0080]

[0081] Among them, E ec , E″ ij , E″ ij t and E″ ij 0 U represents the carbon dioxide equivalent emissions generated in the energy consumption link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; U ij E″ represents the energy consumption of the jth type of livestock in province i in that year; ij / U ij Indicates the energy consumption factor, U ij / Pr ij Indicates the technical factors of energy consumption; ΔE e ″ c 、E t ″ and E0″ represent the total change in carbon dioxide equivalent in the energy consumption link, carbon dioxide equivalent in the tth period, and carbon dioxide equivalent in the base period, respectively; ΔE″ CF , ΔE″ TF , ΔE″ SF , ΔE″ DF and ΔE″ PFThey represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the energy consumption link; CF ij ″ t Indicates the coefficient factor of the energy consumption link in period t; CF ij ″ 0 Represents the base period coefficient factor of the energy consumption link.

[0082] In a specific embodiment, the calculation formula for decomposition of the feces management link is as follows:

[0083]

[0084] ΔE″′ mm =E″′ t -E″′0=ΔE″′ CF +ΔE″′ TF +ΔE″′ SF +ΔE″′ DF +ΔE″′ PF (20);

[0085]

[0086]

[0087] Among them, E″′ mm , E″′ ij , E″′ ij t and E″′ ij 0 They represent the carbon dioxide equivalent emissions generated by the manure management link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; E″′ ij / S ij Indicates the coefficient factor of the manure management link; ΔE″′ mm , E″′ t and E″′0 represent the total change in CO2 equivalent during manure management, CO2 equivalent in period t, and CO2 equivalent in the base period, respectively; ΔE″′ CF , ΔE″′ TF , ΔE″′ SF , ΔE″′ DF and ΔE″′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the manure management link; CF ij ″′ t represents the coefficient factor of the tth period of the manure management link; CF ij″′ 0 Represents the base period coefficient factor of the manure management link.

[0088] In a specific embodiment, a system for quantifying factors affecting carbon emissions in animal husbandry based on the logarithmic mean Dirichlet index model is also provided for the specific implementation of the method. The system is applied to a computer terminal and includes: a start module, a data input module, a livestock industry full life cycle carbon accounting module, a data integrity decision module, a livestock industry full life cycle carbon accounting analysis module, a result rationality decision module, a LMDI decomposition analysis module, a LMDI analysis result output module and an end module.

[0089] Specifically, the output end of the start module is connected to the input end of the data input module; the output end of the data input module is connected to the input end of the livestock industry full life cycle carbon accounting module; the output end of the livestock industry full life cycle carbon accounting module is connected to the input end of the data integrity decision module; the data integrity decision module has two output ends, one indicates that the data is complete (Y), which is connected to the input end of the livestock industry full life cycle carbon accounting analysis module; the other indicates that the data is incomplete (N), which is returned to the input end of the data input module for data supplement; the output end of the livestock industry full life cycle carbon accounting analysis module is connected to the input end of the result rationality decision module; the result rationality decision module also has two output ends, one indicates that the result is reasonable (Y), which is connected to the input end of the LMDI decomposition analysis module; the other indicates that the result is unreasonable (N), which is returned to the input end of the data input module for data correction; the output end of the LMDI decomposition analysis module is connected to the input end of the LMDI analysis result output module; the output end of the LMDI analysis result output module is connected to the input end of the end module.

[0090] Furthermore, the following is a detailed description of the role of each module:

[0091] Start module: marks the beginning of the entire process, is used to start the process, and ensures that the system is ready for data input and processing;

[0092] Data input module: responsible for receiving and entering carbon emission data for the entire life cycle of animal husbandry, including detailed data on enteric fermentation, energy consumption, and manure management;

[0093] Livestock Life Cycle Carbon Accounting Module: processes and accounts for input carbon emission data and calculates the total carbon emissions of each link. This module ensures that all input data is processed and calculated correctly;

[0094] Data integrity decision module: checks whether the data is complete. If the data is missing or incomplete, it returns to the data input module for supplementation. If the data is complete, it continues to the next step of analysis;

[0095] Livestock Life Cycle Carbon Accounting Analysis Module: further analyzes and processes the calculated data to ensure the rationality and accuracy of all data;

[0096] Result rationality decision module: evaluates the rationality of the analysis results. If the results are unreasonable, it returns to the data input module for correction. If the results are reasonable, it proceeds to the next step of decomposition analysis.

[0097] LMDI decomposition analysis module: Using the Logarithmic Mean Dirichlet Index (LMDI) model, the total carbon emissions are decomposed into five major factors: coefficient, technology, structure, demand, and population, and the contribution of each factor to carbon emissions changes is calculated in detail;

[0098] LMDI analysis result output module: outputs the results of LMDI decomposition analysis and generates the final analysis report or data file;

[0099] End module: marks the end of the entire process, confirms that all steps have been completed, closes the process, and saves all output results.

[0100] Through the collaborative work of the above modules, the present invention can finely quantify the factors affecting carbon emissions in animal husbandry and provide a scientific carbon emission reduction strategy.

[0101] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0102] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model, characterized in that: The specific steps are as follows: Obtain carbon emission data for the entire life cycle of animal husbandry, including greenhouse gas emissions from enteric fermentation, energy consumption, and manure management for all types of livestock in all provinces and at all times; Calculate the total amount of greenhouse gas emissions generated in each link based on carbon emission data; Based on the logarithmic mean Dirichlet index model, the total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors, and the impact of each factor on carbon emission changes is calculated respectively.

2. The method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model according to claim 1, characterized in that: The carbon emission-related data include the number of various livestock types in each province, feed consumption, animal product output, and the population of each province.

3. The method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model according to claim 1, characterized in that: The total amount of greenhouse gas emissions generated in each link of the accounting specifically includes: accounting for methane emissions generated by intestinal fermentation, accounting for carbon dioxide emissions generated by energy consumption, and accounting for methane and nitrous oxide emissions generated during feces management.

4. The method for quantifying factors affecting animal husbandry carbon emissions based on the logarithmic mean Dirichlet index model according to claim 3 is characterized in that: The calculation formula for calculating the methane emissions generated by intestinal fermentation is: Among them, E ef represents the methane emissions from enteric fermentation, D1 i,j represents the number of livestock of category j in province i, R1 j represents the methane emission factor during enteric fermentation of type j livestock; The calculation formula for calculating the carbon dioxide emissions generated by the energy consumption is: Among them, E ec Indicates the carbon dioxide emissions generated by energy consumption; O electricity,j Indicates the power consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 electricity,i,j represents the carbon dioxide emission factor of electricity consumed by the jth type of livestock in province i; O coal,j Indicates the coal consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 coal represents the carbon dioxide emission factor of coal consumed by the jth type of livestock; O disel,j Indicates the fuel consumption coefficient of the jth type of livestock in the livestock and poultry production process, R2 disel represents the CO2 emission factor of diesel consumed by livestock of type j; The calculation formula for calculating the methane and nitrous oxide emissions generated during the manure management process is: in, and R3 represents the methane emissions and nitrous oxide emissions from manure management; i,j K represents the methane emission factor during the management of livestock manure of type j in province i; j Manure production coefficient of livestock of type j, R4 i,j represents the nitrous oxide emission factor during the management of livestock manure of type j in province i.

5. The method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model according to claim 1, characterized in that: The total greenhouse gas emissions of each link are decomposed into coefficients, technology, structure, demand and population factors. The factors affecting carbon emissions in animal husbandry specifically include: coefficient factors analyze the carbon emissions generated by consuming unit feed, technology factors analyze the resource consumption required for unit output, structure factors analyze the production ratio of different livestock types, demand factors analyze the product demand corresponding to unit population, and population factors analyze the impact of regional population changes on carbon emissions.

6. The method for quantifying factors affecting animal husbandry carbon emissions based on the logarithmic mean Dirichlet index model according to claim 1, characterized in that: The calculation of the impact of each factor on carbon emissions changes includes: Enteric fermentation decomposition: methane emissions from enteric fermentation in each province and livestock at each time period were converted to carbon dioxide equivalents. Then, based on carbon dioxide equivalents, the factors influencing enteric fermentation methane emissions were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors. Energy consumption decomposition: Based on the CO2 emissions of various livestock in various provinces and periods in the energy consumption link, the factors affecting CO2 emissions from energy consumption are decomposed into coefficient factors, technical factors, structural factors, demand factors and population factors. Decomposition of manure management: The methane and nitrous oxide emissions of various livestock types in various provinces and at different periods in the manure management stage were converted into carbon dioxide equivalents. Then, based on the carbon dioxide equivalents, the influencing factors of methane and nitrous oxide emissions from manure management were decomposed into coefficient factors, technical factors, structural factors, demand factors, and population factors.

7. The method for quantifying factors affecting animal husbandry carbon emissions based on the logarithmic mean Dirichlet index model according to claim 6, characterized in that: The calculation formula for converting to carbon dioxide equivalent is: in, and They represent carbon dioxide equivalent, methane amount and nitrous oxide amount respectively.

8. The method for quantifying factors affecting animal husbandry carbon emissions based on the logarithmic mean Dirichlet index model according to claim 6, characterized in that: The calculation formula for the decomposition of the intestinal fermentation link is as follows: ΔE′ ef =E′ t -E′0=ΔE′ CF +ΔE′ TF +ΔE′ SF +ΔE′ DF +ΔE′ PF (6) Among them, E′ ef , E′ ij 、 as well as They represent the carbon dioxide equivalent emissions generated by the enteric fermentation process in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; S ij represents the amount of feed consumed by the jth type of livestock in province i in that year, Pr ij represents the output of edible animal products produced by the jth type of livestock in province i in that year, Pr i represents the total output of edible animal products produced by all livestock in province i in that year, P i represents the total population of province i in that year; E′ ij / S ij Indicates the intestinal fermentation coefficient factor, S ij / Pr ij Indicates technical factors, Pr ij / Pr i represents the structural factor, Pr ij / P i represents the demand factor, P i represents the population factor; ΔE′ ef , E′ t and E′0 represent the total change of CO2 equivalent in the intestinal fermentation stage, CO2 equivalent in the tth period, and CO2 equivalent in the base period, respectively; ΔE′ CF , ΔE′ TF , ΔE′ SF , ΔE′ DF and ΔE′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors, and population factors in the intestinal fermentation process respectively; represents the coefficient factor of the tth phase of intestinal fermentation, and PF i t represent the technical factors, structural factors, demand factors and population factors in period t respectively; Indicates the base period coefficient factor of the intestinal fermentation link, and PF i 0 They represent base period technical factors, structural factors, demand factors and population factors respectively.

9. The method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model according to claim 8, characterized in that: The calculation formula for decomposing the energy consumption link is as follows: ΔE″ ec =E″ t -E″0=ΔE″ CF +ΔE″ TF +ΔE″ SF +ΔE″ DF +ΔE″ PF (13); Among them, E ec , E″ ij 、 as well as U represents the carbon dioxide equivalent emissions generated in the energy consumption link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; U ij E″ represents the energy consumption of the jth type of livestock in province i in that year; ij / U ij Indicates the energy consumption factor, U ij / Pr ij Indicates the technical factors of energy consumption; ΔE″ ec , E″ t and E″0 represent the total change in carbon dioxide equivalent in the energy consumption link, carbon dioxide equivalent in the tth period, and carbon dioxide equivalent in the base period, respectively; ΔE″ CF , ΔE″ TF , ΔE″ SF , ΔE″ DF and ΔE″ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors and population factors in the energy consumption link respectively; It represents the coefficient factor of the energy consumption link in period t; Represents the base period coefficient factor of the energy consumption link.

10. The method for quantifying factors affecting carbon emissions from animal husbandry based on the logarithmic mean Dirichlet index model according to claim 8, characterized in that: The calculation formula for the decomposition of the feces management link is as follows: ΔE″′ mm =E″′ t -E″′0=ΔE″′ CF +ΔE″′ TF +ΔE″′ SF +ΔE″′ DF +ΔE″′ PF (20); Among them, E″′ mm , E″′ ij 、 as well as They represent the carbon dioxide equivalent emissions generated by the manure management link in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the year, the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the t-th period, and the carbon dioxide equivalent generated by the j-th livestock in the i-th province in the base period; E″′ ij / S ij Indicates the coefficient factor of the manure management link; ΔE″′ mm , E″′ t and E″′0 represent the total change in CO2 equivalent during manure management, CO2 equivalent in period t, and CO2 equivalent in the base period, respectively; ΔE″′ CF , ΔE″′ TF , ΔE″′ SF , ΔE″′ DF and ΔE″′ PF They represent the changes in carbon dioxide equivalent caused by coefficient factors, technical factors, structural factors, demand factors, and population factors in the manure management link; represents the coefficient factor of period t in the manure management link; Represents the base period coefficient factor of the manure management link.

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