Ecological low-carbon agriculture development level evaluation method based on comprehensive indexes

Abstract

The invention discloses an ecological low-carbon agriculture development level evaluation method based on comprehensive indexes, and relates to the technical field of ecological low-carbon agriculture evaluation. Comprising the following steps: constructing an ecological low-carbon agricultural evaluation index system according to an ecological low-carbon agricultural connotation; determining each level of index weight of the ecological low-carbon agricultural evaluation index system according to the historical data; and according to the basic data and the index weight, calculating an ecological low-carbon agricultural comprehensive index level, and realizing ecological low-carbon agricultural evaluation. According to the method, the effect of ecological low-carbon agricultural development can be accurately evaluated, the comprehensive agricultural development level can be effectively measured, a key quantitative basis is provided for agricultural development planning and adjustment, ecological low-carbon agricultural development is powerfully promoted, and the method has an extremely important promoting effect on promoting agricultural sustainable development and achieving targets.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological low-carbon agriculture evaluation, and in particular to an ecological low-carbon agriculture development level evaluation method based on comprehensive indicators. Background Art

[0002] Under the background of global advocacy of sustainable development, ecological low-carbon agriculture has become a key direction of agricultural development. However, the development of ecological low-carbon agriculture faces many severe challenges.

[0003] First, ensuring food security and sustainable supply has always been the primary task of agricultural development. Under this premise, how to achieve a high-efficiency, low-energy consumption and low-emission development model has become a key problem. Based on the stable and safe supply of food and important agricultural products, we will further promote resource conservation, agricultural input reduction, waste recycling, ecological production environment, and low-carbon production and life. Through industrial adjustment, technological innovation, renewable utilization, institutional creation and mechanism innovation, we will achieve low-carbon and ecological agriculture and rural areas, and turn ecological low-carbon dividends into industrial benefits and farmers' income. We will take the road of high-efficiency, low-energy consumption and low-emission sustainable agricultural development that matches the resource carrying capacity and ecological environment capacity and is coordinated with production, life and ecology. However, in practice, there is a lack of scientific and effective ways to coordinate and promote the coordinated development of these aspects, and a complete comprehensive system has not yet been formed to accurately measure the development level of ecological low-carbon agriculture.

[0004] At the same time, ecological low-carbon agriculture should not only achieve emission reduction and carbon fixation, protect and improve the agricultural ecological environment, reduce natural resource consumption and pollution, but also improve agricultural production efficiency and economic benefits, and achieve the simultaneous improvement of ecological, social and economic benefits. Therefore, an ecological low-carbon agricultural development level evaluation method based on comprehensive indicators is proposed to provide strong support for the scientific, efficient and sustainable development of ecological low-carbon agriculture. Summary of the invention

[0005] In view of this, the present invention provides an ecological and low-carbon agricultural development level evaluation method based on comprehensive indicators. By constructing a comprehensive and scientific ecological and low-carbon agricultural development level evaluation system, a multi-dimensional and accurate evaluation of the ecological and low-carbon agricultural development level is achieved. Through quantitative analysis and comprehensive consideration of each key indicator, the development status of ecological and low-carbon agriculture at different stages can be accurately judged.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators includes the following steps: S1. According to the connotation of ecological low-carbon agriculture, construct an ecological low-carbon agriculture evaluation index system; S2. Determine the weights of indicators at all levels of the ecological low-carbon agriculture evaluation index system based on historical data; S3. Calculate the comprehensive indicator level of ecological low-carbon agriculture based on basic data and indicator weights to achieve ecological low-carbon agriculture evaluation.

[0007] Optionally, in S1, based on the connotation of ecological low-carbon agriculture, the specific content of the ecological low-carbon agriculture evaluation index system is as follows: According to the connotation of ecological low-carbon agriculture, a hierarchical framework of the ecological low-carbon agriculture evaluation index system is constructed. It is constructed according to the three-level system of target layer, criterion layer and indicator layer. The target layer includes the level of stable production and supply, the level of resource utilization, the level of ecological service, the level of low-carbon development and the level of economic development.

[0008] Optionally, the specific contents of the criterion layer and indicator layer in the hierarchical framework of the ecological low-carbon agriculture evaluation index system are as follows: Among them, the criterion layer is the second-level indicator, and the indicator layer is the third-level indicator; The secondary indicators under the stable production and supply level indicators include production capacity indicators and stable supply indicators. The tertiary indicators include grain yield per unit area and sown area under the production capacity indicators, and per capita grain possession, per capita meat, eggs and milk possession, and grain output stability under the stable supply indicators. The secondary indicators under the resource utilization level index include resource efficiency and recycling, and the tertiary indicators include water use efficiency, fertilizer and pesticide efficiency, and planting diversity under the resource efficiency index, and the comprehensive utilization rate of straw and livestock and poultry manure under the recycling index; The secondary indicators under the ecological service level indicators include agricultural ecology and rural ecology. The tertiary indicators include per capita ecological carrying capacity, soil and water conservation rate, and the number of high-quality agricultural products per unit area under the agricultural ecological indicators, and the rural sanitary toilet penetration rate, rural domestic sewage treatment rate, and rural domestic garbage treatment rate under the rural ecological indicators. The secondary indicators under the low-carbon development level index include carbon emission intensity and carbon sink effect. The tertiary indicators include the carbon emission intensity index for the CO2 emissions per unit of crop production, the CO2 emissions per unit of animal husbandry, and the carbon emission intensity of rural residents’ living energy consumption, and the carbon sink effect index for farmland carbon sink, forest carbon sink, and grassland carbon sink. The secondary indicators under the economic development level index include economic efficiency and increased farmers' income; the tertiary indicators include agricultural labor productivity and agricultural land output rate under the economic efficiency index, the proportion of per capita disposable income of rural residents in per capita GDP and the proportion of the total output value of agriculture, forestry, animal husbandry and fishery services in the total output value of agriculture, forestry, animal husbandry and fishery under the increased farmers' income index.

[0009] Optionally, the specific content of determining the weights of indicators at all levels of the ecological low-carbon agriculture evaluation indicator system according to historical data in S2 is: According to the CRITIC method and expert scoring method, the combined weights of comprehensive indicators in the ecological low-carbon agricultural development level evaluation system are determined, which specifically includes the following steps: S21. Standardize historical data: Positive indicators: ; Negative indicators: ; in, is the standardized value, is the initial data, is the maximum value, is the minimum value; S22. Calculate the objective weight of the composite index using the CRITIC method using historical data: Calculate the Comparative strength of the indicators: ; in, For the The average value of the indicators, For the The number of historical data for each indicator; Calculate the conflict between evaluation indicators: ; in, is the Pearson correlation coefficient between the indicators, is the number of indicators; Calculate the information carrying capacity: ; Calculate the objective weight of the comprehensive index , ; S23. Use historical data to calculate the subjective weight of the comprehensive indicators according to the expert scoring method: Experts are invited to score according to the scoring rules. The experts score each level separately. The total score of each level is 100, that is, the total score of the five target level indicators is 100, the total score of the criterion level under a single target level is 100, and the total score of the indicator level under a single criterion level is 100; The scoring table of recycling experts was eliminated, with scores of ≤10 for stable production and supply, ≥50 for stable production and supply, and <10 for economic development; The weights of each expert indicator are calculated as follows: ; in, For the The weight of the indicator, For the The target layer score of each indicator, For the The criterion level score of each indicator, For the The indicator-level score of each indicator; The subjective weight of the comprehensive index is calculated based on the scoring weights of many experts: ; S24. Calculate the combined weight of comprehensive indicators based on the objective weight and subjective weight using the average method.

[0010] Optionally, in S3, the comprehensive indicator level of ecological low-carbon agriculture is calculated according to the basic data and indicator weights, and the specific content of ecological low-carbon agriculture evaluation is as follows: Calculate the comprehensive score of the comprehensive indicator level of ecological low-carbon agriculture: ; in, Provide a comprehensive score for ecological and low-carbon agriculture; is the number of indicators at the indicator layer; For the The weight of the indicator, For the The first indicator Standardized data; The evaluation objects are ranked according to the comprehensive scores. The higher the score, the higher the level of ecological and low-carbon agricultural development of the evaluation object, thus realizing the ecological and low-carbon agricultural evaluation.

[0011] It can be seen from the above technical solution that, compared with the prior art, the present invention provides an ecological low-carbon agricultural development level evaluation method based on comprehensive indicators, which has the following beneficial effects: (1) The present invention constructs an evaluation index system including five primary indicators, namely stable production and supply, resource utilization, ecological services, low-carbon development, and economic development, as well as corresponding secondary and tertiary indicators, collects basic data, uses the CRITIC method and expert scoring method to determine the indicator weights, and then calculates the comprehensive indicator level of ecological low-carbon agriculture, accurately reflecting the actual situation of agriculture in different regions in terms of production guarantee, resource circulation, ecological services, carbon emission control, and economic growth, and fully reflecting the differences in agricultural resource conditions and development levels in various regions; (2) The present invention can not only accurately evaluate the effectiveness of ecological low-carbon agricultural development, but also effectively measure the level of comprehensive agricultural development, provide key quantitative basis for agricultural development planning and adjustment, and effectively promote the development of ecological low-carbon agriculture; (3) The present invention realizes a multi-dimensional and accurate evaluation of the development level of ecological low-carbon agriculture by constructing a comprehensive and scientific evaluation system for the development level of ecological low-carbon agriculture. Through quantitative analysis and comprehensive consideration of key indicators, the development status of ecological low-carbon agriculture at different stages can be accurately judged. On the one hand, it can timely discover the problems and deficiencies in the development process of ecological low-carbon agriculture, and provide a basis for the targeted formulation of improvement strategies; on the other hand, it can promote the sustainable development of ecological low-carbon agriculture with high energy efficiency, low energy consumption and low emissions, which matches the resource carrying capacity and ecological environment capacity and coordinates the production, life and ecology. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0013] Figure 1 A flow chart of an ecological low-carbon agricultural development level evaluation method based on comprehensive indicators provided by the present invention. DETAILED DESCRIPTION

[0014] 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.

[0015] Reference Figure 1 As shown, the present invention discloses a method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators, comprising the following steps: S1. According to the connotation of ecological low-carbon agriculture, construct an ecological low-carbon agriculture evaluation index system; S2. Determine the weights of indicators at all levels of the ecological low-carbon agriculture evaluation index system based on historical data; S3. Calculate the comprehensive indicator level of ecological low-carbon agriculture based on basic data and indicator weights to achieve ecological low-carbon agriculture evaluation.

[0016] Furthermore, according to the connotation of ecological low-carbon agriculture, the specific contents of the ecological low-carbon agriculture evaluation index system constructed in S1 are as follows: According to the connotation of ecological low-carbon agriculture, a hierarchical framework of the ecological low-carbon agriculture evaluation index system is constructed. It is constructed according to the three-level system of target layer, criterion layer and indicator layer. The target layer includes the level of stable production and supply, the level of resource utilization, the level of ecological service, the level of low-carbon development and the level of economic development.

[0017] Furthermore, the specific contents of the criterion layer and indicator layer in the hierarchical framework of the ecological low-carbon agriculture evaluation index system are as follows: Among them, the criterion layer is the second-level indicator, and the indicator layer is the third-level indicator; The secondary indicators under the stable production and supply level indicators include production capacity indicators and stable supply indicators. The tertiary indicators include grain yield per unit area and sown area under the production capacity indicators, and per capita grain possession, per capita meat, eggs and milk possession, and grain output stability under the stable supply indicators. The secondary indicators under the resource utilization level index include resource efficiency and recycling, and the tertiary indicators include water use efficiency, fertilizer and pesticide efficiency, and planting diversity under the resource efficiency index, and the comprehensive utilization rate of straw and livestock and poultry manure under the recycling index; The secondary indicators under the ecological service level indicators include agricultural ecology and rural ecology. The tertiary indicators include per capita ecological carrying capacity, soil and water conservation rate, and the number of high-quality agricultural products per unit area under the agricultural ecological indicators, and the rural sanitary toilet penetration rate, rural domestic sewage treatment rate, and rural domestic garbage treatment rate under the rural ecological indicators. The secondary indicators under the low-carbon development level index include carbon emission intensity and carbon sink effect. The tertiary indicators include the carbon emission intensity index for the CO2 emissions per unit of crop production, the CO2 emissions per unit of animal husbandry, and the carbon emission intensity of rural residents’ living energy consumption, and the carbon sink effect index for farmland carbon sink, forest carbon sink, and grassland carbon sink. The secondary indicators under the economic development level index include economic efficiency and increased farmers' income; the tertiary indicators include agricultural labor productivity and agricultural land output rate under the economic efficiency index, the proportion of per capita disposable income of rural residents in per capita GDP and the proportion of the total output value of agriculture, forestry, animal husbandry and fishery services in the total output value of agriculture, forestry, animal husbandry and fishery under the increased farmers' income index.

[0018] Furthermore, the specific contents of the weights of indicators at all levels of the ecological low-carbon agriculture evaluation index system determined in S2 based on historical data are as follows: According to the CRITIC method and expert scoring method, the combined weights of comprehensive indicators in the ecological low-carbon agricultural development level evaluation system are determined, which specifically includes the following steps: S21. Standardize historical data: Positive indicators: ; Negative indicators: ; in, is the standardized value, is the initial data, is the maximum value, is the minimum value; S22. Calculate the objective weight of the composite index using the CRITIC method using historical data: Calculate the Comparative strength of the indicators: ; in, For the The average value of the indicators, For the The number of historical data for each indicator; Calculate the conflict between evaluation indicators: ; in, is the Pearson correlation coefficient between the indicators, is the number of indicators; Calculate the information carrying capacity: ; Calculate the objective weight of the comprehensive index , ; S23. Use historical data to calculate the subjective weight of the comprehensive indicators according to the expert scoring method: Experts are invited to score according to the scoring rules. The experts score each level separately. The total score of each level is 100, that is, the total score of the five target level indicators is 100, the total score of the criterion level under a single target level is 100, and the total score of the indicator level under a single criterion level is 100; The scoring table of recycling experts was eliminated, with scores of ≤10 for stable production and supply, ≥50 for stable production and supply, and <10 for economic development; The weights of each expert indicator are calculated as follows: ; in, For the The weight of the indicator, For the The target layer score of each indicator, For the The criterion level score of each indicator, For the The indicator-level score of each indicator; The subjective weight of the comprehensive index is calculated based on the scoring weights of many experts: ; S24. Calculate the combined weight of comprehensive indicators based on the objective weight and subjective weight using the average method.

[0019] Furthermore, in S3, the comprehensive indicator level of ecological low-carbon agriculture is calculated according to the basic data and indicator weights, and the specific content of ecological low-carbon agriculture evaluation is as follows: Calculate the comprehensive score of the comprehensive indicator level of ecological low-carbon agriculture: ; in, Provide a comprehensive score for ecological and low-carbon agriculture; is the number of indicators at the indicator layer; For the The weight of the indicator, For the The first indicator Standardized data; The evaluation objects are ranked according to the comprehensive scores. The higher the score, the higher the level of ecological and low-carbon agricultural development of the evaluation object, thus realizing the ecological and low-carbon agricultural evaluation.

[0020] In a specific embodiment, the following contents are included: (1) According to the connotation of ecological low-carbon agriculture, a hierarchical framework of the ecological low-carbon agriculture evaluation index system is constructed. It is constructed according to the three-level system of target layer, criterion layer and indicator layer. The target layer includes five dimensions: stable production and supply level, resource utilization level, ecological service level, low-carbon development level and economic development level.

[0021] Among them, the criterion layer is the second-level indicator, and the indicator layer is the third-level indicator; The secondary indicators under the stable production and supply level indicators include production capacity indicators and stable supply indicators. The tertiary indicators include grain yield per unit area and sown area under the production capacity indicators, and per capita grain possession, per capita meat, eggs and milk possession, and grain output stability under the stable supply indicators. The secondary indicators under the resource utilization level index include resource efficiency and recycling, and the tertiary indicators include water use efficiency, fertilizer and pesticide efficiency, and planting diversity under the resource efficiency index, and the comprehensive utilization rate of straw and livestock and poultry manure under the recycling index; The secondary indicators under the ecological service level indicators include agricultural ecology and rural ecology. The tertiary indicators include per capita ecological carrying capacity, soil and water conservation rate, and the number of high-quality agricultural products per unit area under the agricultural ecological indicators, and the rural sanitary toilet penetration rate, rural domestic sewage treatment rate, and rural domestic garbage treatment rate under the rural ecological indicators. The secondary indicators under the low-carbon development level index include carbon emission intensity and carbon sink effect. The tertiary indicators include the carbon emission intensity index for the CO2 emissions per unit of crop production, the CO2 emissions per unit of animal husbandry, and the carbon emission intensity of rural residents’ living energy consumption, and the carbon sink effect index for farmland carbon sink, forest carbon sink, and grassland carbon sink. The secondary indicators under the economic development level index include economic efficiency and farmers' income increase, and the tertiary indicators include agricultural labor productivity and agricultural land output rate under the economic efficiency index, the proportion of rural residents' per capita disposable income to per capita GDP, and the proportion of the total output value of agriculture, forestry, animal husbandry and fishery services to the total output value of agriculture, forestry, animal husbandry and fishery under the farmers' income increase index. The construction of the ecological low-carbon agriculture evaluation index system is shown in Table 1.

[0022] Table 1 Composition of the evaluation system for the development level of ecological low-carbon agriculture

[0023] The data used for the above evaluation indicators are respectively from statistical yearbooks such as China Statistical Yearbook, China Rural Statistical Yearbook, China Agricultural Statistical Data, China Energy Statistical Yearbook, National Agricultural Product Cost and Benefit Data Compilation, China Grain Yearbook, China Agricultural Product Price Survey Yearbook, China Environmental Statistical Yearbook, and publicly released statistical data (some indicator data are calculated based on the above relevant data). Data such as straw comprehensive utilization rate, number of high-quality agricultural products per unit area, rural sanitary toilet penetration rate, rural domestic sewage treatment rate, and rural domestic waste treatment rate are from relevant industry departments and units. Data such as CO2 emissions per unit output of planting industry, CO2 emissions per unit output of animal husbandry, carbon emission intensity of rural residents' living energy, farmland carbon sink, forestland carbon sink, and grassland carbon sink are calculated based on relevant statistical data and related parameters. Linear interpolation is used to fill in individual missing values. Based on the historical data from 2016 to 2022 (the 2016-2022 data of 26 indicators in the indicator layer in Table 1), the specific content of the weights of indicators at all levels of the ecological low-carbon agriculture evaluation indicator system is determined as follows: According to the CRITIC method and expert scoring method, the combined weights of comprehensive indicators in the ecological low-carbon agricultural development level evaluation system are determined, which specifically includes the following steps: Perform data standardization on historical data: Positive indicators: ; Negative indicators: ; in, is the standardized value, is the initial data, is the maximum value, is the minimum value; The objective weight of the composite index is calculated using the CRITIC method using historical data: Calculate the Comparative strength of the indicators: ; in, For the The average value of the indicators, For the The number of historical data for each indicator; Calculate the conflict between evaluation indicators: ; in, is the Pearson correlation coefficient between the indicators, is the number of indicators; Calculate the information carrying capacity: ; Calculate the objective weight of the comprehensive index , ; The subjective weight of the comprehensive indicator is calculated based on the expert scoring method using historical data: Experts are invited to score according to the scoring rules. The experts score each level separately. The total score of each level is 100, that is, the total score of the five target level indicators is 100, the total score of the criterion level under a single target level is 100, and the total score of the indicator level under a single criterion level is 100; The scoring table of recycling experts was eliminated, with scores of ≤10 for stable production and supply, ≥50 for stable production and supply, and <10 for economic development; The weights of each expert indicator are calculated as follows: ; in, For the The weight of the indicator, For the The target layer score of each indicator, For the The criterion level score of each indicator, For the The indicator-level score of each indicator; The subjective weight of the comprehensive index is calculated based on the scoring weights of many experts: ; The combined weight of the comprehensive indicators is calculated according to the objective weight and subjective weight using the average method. The weight calculation results are shown in Table 2.

[0024] Table 2 Weight calculation results (3) The comprehensive indicator level of ecological low-carbon agriculture is calculated based on the basic data and indicator weights from 2016 to 2022. The specific contents of the ecological low-carbon agriculture evaluation are as follows: Calculate the comprehensive score of the comprehensive indicator level of ecological low-carbon agriculture: ; in, Provide a comprehensive score for ecological and low-carbon agriculture; is the number of indicators at the indicator layer; For the The weight of the indicator, For the The first indicator Standardized data; The evaluation objects are ranked by comprehensive scores, and the results show that the evaluation results of the ecological agriculture development level of Province A are 71.7 points in 2016, 73.4 points in 2017, 74.1 points in 2018, 75.9 points in 2019, 76.9 points in 2020, 77.9 points in 2021, and 76.6 points in 2022; the ecological low-carbon agriculture development level of Province A in 2021 is the highest in 7 years. The higher the score, the higher the ecological low-carbon agriculture development level of the evaluation object, thus achieving ecological low-carbon agriculture evaluation.

[0025] According to the connotation of ecological low-carbon agriculture, the present invention constructs an ecological low-carbon agriculture evaluation index system including 5 primary indicators, 10 secondary indicators and 26 tertiary indicators; the indicator weights are calculated by using CRITIC and expert scoring method, i.e., a method combining subjective and objective methods, and the weight calculation results are more reliable.

[0026] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators, characterized in that: The following steps are involved: S1. According to the connotation of ecological low-carbon agriculture, construct an ecological low-carbon agriculture evaluation index system; S2. Determine the weights of indicators at all levels of the ecological low-carbon agriculture evaluation index system based on historical data; S3. Calculate the comprehensive indicator level of ecological low-carbon agriculture based on basic data and indicator weights to achieve ecological low-carbon agriculture evaluation; According to the connotation of ecological low-carbon agriculture, the specific contents of the ecological low-carbon agriculture evaluation index system constructed in S1 are as follows: According to the connotation of ecological low-carbon agriculture, a hierarchical framework of the ecological low-carbon agriculture evaluation index system is constructed. It is constructed according to the three-level system of target layer, criterion layer and indicator layer. The target layer includes the level of stable production and supply, the level of resource utilization, the level of ecological service, the level of low-carbon development and the level of economic development.

2. The method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators according to claim 1 is characterized in that: The specific contents of the criterion layer and indicator layer in the hierarchical framework of the ecological low-carbon agriculture evaluation index system are as follows: Among them, the criterion layer is the second-level indicator, and the indicator layer is the third-level indicator; The secondary indicators under the stable production and supply level indicators include production capacity indicators and stable supply indicators. The tertiary indicators include grain yield per unit area and sown area under the production capacity indicators, and per capita grain possession, per capita meat, eggs and milk possession, and grain output stability under the stable supply indicators. The secondary indicators under the resource utilization level index include resource efficiency and recycling, and the tertiary indicators include water use efficiency, fertilizer and pesticide efficiency, and planting diversity under the resource efficiency index, and the comprehensive utilization rate of straw and livestock and poultry manure under the recycling index; The secondary indicators under the ecological service level indicators include agricultural ecology and rural ecology. The tertiary indicators include per capita ecological carrying capacity, soil and water conservation rate, and the number of high-quality agricultural products per unit area under the agricultural ecological indicators, and the rural sanitary toilet penetration rate, rural domestic sewage treatment rate, and rural domestic garbage treatment rate under the rural ecological indicators. The secondary indicators under the low-carbon development level index include carbon emission intensity and carbon sink effect. The tertiary indicators include the carbon emission intensity index for the CO2 emissions per unit of crop production, the CO2 emissions per unit of animal husbandry, and the carbon emission intensity of rural residents’ living energy consumption, and the carbon sink effect index for farmland carbon sink, forest carbon sink, and grassland carbon sink. The secondary indicators under the economic development level index include economic efficiency and increased farmers' income; the tertiary indicators include agricultural labor productivity and agricultural land output rate under the economic efficiency index, the proportion of per capita disposable income of rural residents in per capita GDP and the proportion of the total output value of agriculture, forestry, animal husbandry and fishery services in the total output value of agriculture, forestry, animal husbandry and fishery under the increased farmers' income index.

3. The method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators according to claim 1 is characterized in that: The specific contents of the weights of indicators at all levels in the ecological low-carbon agriculture evaluation index system determined according to historical data in S2 are as follows: According to the CRITIC method and expert scoring method, the combined weights of comprehensive indicators in the ecological low-carbon agricultural development level evaluation system are determined, which specifically includes the following steps: S21. Standardize historical data: Positive indicators: ; Negative indicators: ; in, is the standardized value, is the initial data, is the maximum value, is the minimum value; S22. Calculate the objective weight of the composite index using the CRITIC method using historical data: Calculate the The comparative strength of the indicators: ; in, For the The average value of the indicators, For the The number of historical data for each indicator; Calculate the conflict between evaluation indicators: ; in, is the Pearson correlation coefficient between the indicators, is the number of indicators; Calculate the information carrying capacity: ; Calculate the objective weight of the comprehensive index , ; S23. Use historical data to calculate the subjective weight of the comprehensive indicators according to the expert scoring method: Experts are invited to score according to the scoring rules. The experts score each level separately. The total score of each level is 100, that is, the total score of the five target level indicators is 100, the total score of the criterion level under a single target level is 100, and the total score of the indicator level under a single criterion level is 100; The scoring table of recycling experts was eliminated, with scores of stable production and supply ≤ 10 points, stable production and supply ≥ 50 points, and economic development < 10 points excluded; The weights of each expert indicator are calculated as follows: ； in, For the The weight of the indicator, For the The target layer score of each indicator, For the The criterion level score of each indicator, For the The indicator-level score of each indicator; The subjective weight of the comprehensive index is calculated based on the scoring weights of many experts: ； S24. Calculate the combined weight of comprehensive indicators based on the objective weight and subjective weight using the average method.

4. The method for evaluating the development level of ecological low-carbon agriculture based on comprehensive indicators according to claim 1 is characterized in that: In S3, the comprehensive indicator level of ecological low-carbon agriculture is calculated based on basic data and indicator weights, and the specific content of ecological low-carbon agriculture evaluation is as follows: Calculate the comprehensive score of the comprehensive indicator level of ecological low-carbon agriculture: ； in, Provide a comprehensive score for ecological and low-carbon agriculture; is the number of indicators at the indicator layer; For the The weight of the indicator, For the The first indicator Standardized data; The evaluation objects are ranked according to the comprehensive scores. The higher the score, the higher the level of ecological and low-carbon agricultural development of the evaluation object, thus realizing the ecological and low-carbon agricultural evaluation.

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