Coordinated evaluation method and mode analysis method for water-saving irrigation development level and rural poverty

Abstract

The invention discloses a water-saving irrigation development level and rural poverty coordinated evaluation method and a mode analysis method, and relates to the technical field of agricultural water resource management and rural sustainable development. The method comprises the following steps: acquiring a water-saving irrigation development level evaluation index and a rural poverty evaluation index; constructing a water-saving irrigation development level function and a rural poverty function according to the water-saving irrigation development level and the rural poverty current situation; inputting the water-saving irrigation development level evaluation index into a water-saving irrigation development level function to obtain a water-saving irrigation subsystem comprehensive index; and inputting the rural poverty evaluation index into a rural poverty function to obtain a rural poverty subsystem comprehensive index. According to the rural poverty reduction measure based on the development of the water-saving irrigation technology, a decision basis is provided for determining the development path and the development scale of the water-saving irrigation technology, improving the agricultural irrigation level and achieving the poverty reduction target.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural water resource management and rural sustainable development, and more specifically, to a coordinated evaluation method and model analysis method for the development level of water-saving irrigation and rural poverty. Background Art

[0002] As a core link in agricultural production, water-saving irrigation technology has changed the agricultural production mode and production efficiency, and has a significant effect on reducing rural poverty and promoting rural economic development. Therefore, there is a complex coupling and coordination relationship between the development level of water-saving irrigation and rural poverty reduction. Studying the coordination relationship between agricultural water-saving irrigation and poverty reduction can provide a basis for the selection of poverty reduction approaches, and is also conducive to the sustainable management of regional water resources, improving the utilization efficiency of water resources and economic benefits, so as to find a virtuous development path for the coordination of water-saving irrigation and rural economic development.

[0003] Currently, there is little research on the coordination relationship between the development level of water-saving irrigation and rural poverty reduction. The existing research results only take some small farmers as the research objects, and the poverty reduction goals mainly focus on the improvement of economic income and agricultural production efficiency, without considering the promoting effects of the social and environmental benefits generated by irrigation at the regional and national levels from a macro perspective. Especially in arid and semi-arid regions, irrigation is not only an important part of the poverty reduction strategy, but also the cornerstone of water resource optimization allocation, food security guarantee and regional sustainable development. A multi-dimensional and multi-scale analysis method should be adopted to provide a set of comprehensive evaluation methods and coordination models for determining the coordination relationship between the development level of water-saving irrigation and rural poverty reduction, which can provide a basis for the selection of regional water-saving irrigation technology, the determination of irrigation scale, the improvement of development level, and the formulation of poverty reduction measures and goals. Summary of the Invention

[0004] In view of this, the present invention provides a coordinated evaluation method and model analysis method for the development level of water-saving irrigation and rural poverty to achieve the purpose of the background art.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A coordinated evaluation method for the development level of water-saving irrigation and rural poverty includes the following steps:

[0007] Obtain the evaluation indicators for the level of water-saving irrigation and the evaluation indicators for rural poverty;

[0008] Construct a function for the development level of water-saving irrigation and a function for rural poverty according to the development level of water-saving irrigation and the current situation of rural poverty;

[0009] Input the water-saving irrigation level evaluation indicators into the water-saving irrigation development level function to obtain the comprehensive index of the water-saving irrigation subsystem; input the rural poverty evaluation indicators into the rural poverty function to obtain the comprehensive index of the rural poverty subsystem.

[0010] Obtain the coupling coordination degree of the water-saving irrigation development level and rural poverty based on the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem.

[0011] Optionally, the water-saving irrigation level evaluation indicators include: degree of water resource development A1, level of water conservancy A2, coefficient of development level of water-saving irrigation technology A3, canal seepage prevention rate A4, irrigation water utilization coefficient A5, proportion of agricultural irrigation investment in the total national investment A6, input coefficient of water-saving irrigation technology A7, proportion of agricultural irrigation cost in the total cost of farmers A8, water consumption per 10,000 yuan of GDP A9, water productivity of typical crops A10, labor productivity A11, proportion of farmers adopting water-saving irrigation technology A12, growth rate of per capita irrigation area of agricultural labor A13, land use improvement rate A14.

[0012] Optionally, the rural poverty evaluation indicators include: per capita disposable income of rural poor families B1, rural poverty incidence rate B2, per capita consumption expenditure of rural poor families B3, living standard of rural residents B4, and educational and cultural level of rural residents B5.

[0013] Optionally, the water-saving irrigation level function and the rural poverty function are as follows:

[0014]

[0015] Among them, (i = 1, 2) represents the water-saving irrigation subsystem and the rural poverty subsystem, (j = 1, 2,...) represents the number of indicators, U i is the comprehensive index of the subsystem, n i is the number of subsystem indicators, x ij is the corresponding indicator value of each subsystem, w ij is the corresponding weight of each indicator in each subsystem, and the sum of the weights in each subsystem is 1, that is

[0016]

[0017] After determining the specific indicator items and the corresponding weights, complete the construction of the water-saving irrigation development level function and the rural poverty function.

[0018] Optionally, the calculation formulas for the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem are as follows:

[0019]

[0020] Among them, U1 and U2 are the comprehensive indices of the water-saving irrigation subsystem and the rural poverty subsystem respectively, n1 and n2 are the numbers of indicators of the water-saving irrigation subsystem and the rural poverty subsystem respectively, w 1j and w 2j are the weights of each indicator respectively, and x 1j and x 2j are the dimensionless indicator values respectively.

[0021] Optionally, obtaining the coupling coordination degree of the water-saving irrigation development level and rural poverty based on the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem includes:

[0022] Calculating the coupling degree between the water-saving irrigation subsystem and the rural poverty subsystem according to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem;

[0023] Calculating the coordination index reflecting the overall synergy effect of the water-saving irrigation subsystem and the rural poverty subsystem according to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem;

[0024] Obtaining the coupling coordination degree according to the coupling degree and the coordination index.

[0025] Optionally, the coupling degree calculation formula is as follows:

[0026]

[0027] Among them, C is the coupling degree, U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem.

[0028] Optionally, calculating the coordination index reflecting the overall synergy effect of the water-saving irrigation subsystem and the rural poverty subsystem, and the specific expression is:

[0029]

[0030] Among them, T is the coordination index, a and b are set coefficients; U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem.

[0031] Optionally, obtaining the coupling coordination degree according to the coupling degree and the coordination index, and the specific expression is:

[0032]

[0033] Among them, D is the coupling coordination degree, and its value ranges from (0, 1). The closer the value is to 1, the higher the coupling coordination degree between the systems, and vice versa. T is the coordination index; C is the coupling degree.

[0034] A method for analyzing the coordination model between the development level of water-saving irrigation and rural poverty. According to the coordination evaluation method between the development level of water-saving irrigation and rural poverty described in any one of the above, it is characterized by including the following steps:

[0035] Obtain the coupling coordination degree;

[0036] Use the grey relational analysis model to determine the influencing factors of the coordination level between the development level of water-saving irrigation and rural poverty;

[0037] Sort and classify the influencing factors according to the size of the correlation degree, analyze them in combination with the development status of local water-saving irrigation and poverty reduction work, and summarize the correlation degree coefficients into four blocks according to the criterion layer;

[0038] Determine the coordination model between the development level of water-saving irrigation and rural poverty according to the above-mentioned influencing factor analysis and the coupling coordination degree.

[0039] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a coordination evaluation method and a model analysis method for the development level of water-saving irrigation and rural poverty, which pays attention to the impact of water-saving irrigation technology on poverty in different regions and different conditions, finds out the water-saving irrigation factors with the largest coupling coordination degree with poverty reduction in this region, and explores how to maximize its poverty reduction potential through policy and technical means. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0041] Figure 1 It is a schematic flow chart of the coordination evaluation method of the present invention;

[0042] Figure 2 It is a schematic flow chart of the coordination model analysis method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0044] The embodiments of the present invention disclose a coordination evaluation method for the development level of water-saving irrigation and rural poverty, asFigure 1 As shown in the figure, it includes the following steps:

[0045] Step 1: Obtain the evaluation indicators for the level of water-saving irrigation and the evaluation indicators for rural poverty.

[0046] Step 2: Construct a function for the development level of water-saving irrigation and a function for rural poverty according to the development level of water-saving irrigation and the current situation of rural poverty.

[0047] Step 3: Input the evaluation indicators for the level of water-saving irrigation into the function for the development level of water-saving irrigation to obtain the comprehensive index of the water-saving irrigation subsystem; input the evaluation indicators for rural poverty into the function for rural poverty to obtain the comprehensive index of the rural poverty subsystem.

[0048] Step 4: Obtain the coupling coordination degree between the development level of water-saving irrigation and rural poverty based on the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem.

[0049] The evaluation indicators for the level of water-saving irrigation include: the degree of water resource development A1, the level of water conservancy A2, the development level coefficient of water-saving irrigation technology A3, the canal seepage prevention rate A4, the irrigation water utilization coefficient A5, the proportion of agricultural irrigation investment in the total national investment A6, the input coefficient of water-saving irrigation technology A7, the proportion of agricultural irrigation cost in the total cost of farmers A8, the water consumption per 10,000 yuan of GDP A9, the water productivity of typical crops A10, the labor productivity A11, the proportion of farmers adopting water-saving irrigation technology A12, the growth rate of the per capita irrigation area of agricultural labor A13, and the land use improvement rate A14; Obtain the evaluation indicators for rural poverty, and the evaluation indicators for rural poverty include: the per capita disposable income of rural poor families B1, the rural poverty incidence rate B2, the per capita consumption expenditure of rural poor families B3, the living standard of rural residents B4, and the educational and cultural level of rural residents B5.

[0050] Specifically, the evaluation indicators for the level of water-saving irrigation are shown in Table 1, mainly including three categories of factors: technology, economy, and society, with a total of 14 restrictive indicators.

[0051] Table 1: Evaluation indicators for the level of water-saving irrigation

[0052]

[0053]

[0054] Corresponding to the evaluation indicators for the level of water-saving irrigation, the specific method for determining the evaluation data is as follows:

[0055] The degree of water resource development (A1) is used to evaluate the utilization efficiency and development level of water resources in a region and is an important indicator for measuring the effect of water resource management and utilization. The specific calculation method is as follows:

[0056] [Degree of water resources development] = [Developed volume ÷ Total water resources volume]

[0057] The classification thresholds of the degree of water resources development index are shown in Table A1:

[0058]

[0059] The level of water conservancy (A2) is used to evaluate the irrigation capacity and the degree of water conservancy in a region. The specific calculation method is:

[0060] [Level of water conservancy] = [Effective irrigation area ÷ Cultivated land area]

[0061] The classification thresholds of the level of water conservancy index are shown in Table A2:

[0062]

[0063] The coefficient of the development degree of water-saving agriculture (A3) is used to evaluate the water-saving level of agricultural irrigation and the water resource utilization efficiency in a region. The specific calculation method is:

[0064] [Coefficient of the development degree of water-saving agriculture] = [Area of water-saving irrigation ÷ Effective irrigation area]

[0065] The classification thresholds of the coefficient of the development degree of water-saving agriculture index are shown in Table A3:

[0066]

[0067] The canal seepage prevention rate (A4) is used to evaluate the seepage prevention effect of the canals in the irrigation area and is one of the important indicators for evaluating the water resource transportation efficiency, which helps to optimize water resource management and improve irrigation efficiency. The specific calculation method is:

[0068] [Canal seepage prevention rate] = [Length of seepage prevention canals ÷ Total length of canals]

[0069] The classification thresholds of the canal seepage prevention rate index are shown in Table A4:

[0070]

[0071] The irrigation water utilization coefficient (A5) is used to evaluate the water resource utilization efficiency in the field irrigation link. The specific calculation method is:

[0072] [Irrigation water utilization coefficient] = [Effective water volume in the field ÷ Water volume introduced at the canal head]

[0073] The classification thresholds of the irrigation water utilization coefficient index are shown in Table A5:

[0074]

[0075] The proportion of agricultural irrigation investment in the country's total investment (A6) is mainly used to evaluate the degree of attention and resource investment of the country in the irrigation field of agricultural infrastructure construction, as well as the relative status and priority development degree of agricultural irrigation in the overall investment layout of the country. The specific calculation method is as follows:

[0076] [Proportion of agricultural irrigation investment in the country's total investment] = [Agricultural irrigation investment ÷ Country's total investment]

[0077] The classification thresholds of the proportion of agricultural irrigation investment in the country's total investment are shown in Table A6:

[0078]

[0079] The input coefficient of water-saving irrigation technology (A7) is mainly used to evaluate the relative level of investment in water-saving technology in agricultural production, as well as to measure the proportion of investment in water-saving technology in the entire agricultural investment, reflecting the degree of attention to water-saving technology and the resource allocation situation. The specific calculation method is as follows:

[0080] [Input coefficient of water-saving irrigation technology] = [Investment in water-saving irrigation technology ÷ Agricultural irrigation investment]

[0081] The classification thresholds of the input coefficient of water-saving irrigation technology are shown in Table A7:

[0082]

[0083] The proportion of agricultural irrigation cost in farmers' total cost (A8) is used to evaluate the importance of irrigation in farmers' production expenditures and its impact on farmers' planting costs, and can also indirectly reflect the utilization efficiency of irrigation facilities and the economy of irrigation methods. The specific calculation method is as follows:

[0084] [Proportion of agricultural irrigation cost in farmers' total cost] = [Farmers' investment in irrigation cost ÷ Farmers' total investment in agriculture]

[0085] The classification thresholds of the index of the proportion of agricultural irrigation cost in farmers' total cost are shown in Table A8:

[0086]

[0087] Water consumption per 10,000 yuan of GDP (A9) is used to evaluate the water utilization efficiency in the economic production process of a region, and can intuitively reflect the relationship between economic development and water resource consumption. The specific calculation method is as follows:

[0088] [Water consumption per 10,000 yuan of GDP] = [Water consumption ÷ Gross domestic product]

[0089] The classification thresholds of water consumption per 10,000 yuan of GDP are shown in Table A9:

[0090]

[0091] The typical crop water productivity (A10) is used to evaluate the utilization efficiency of agricultural water resources by crops, as well as the rationality and effectiveness of planting management and irrigation measures, reflecting the comprehensive performance of agricultural production in terms of water resource utilization. The specific calculation method is as follows:

[0092] [Crop water productivity] = [Crop yield ÷ water consumption during the growth period]

[0093] The typical crops planted vary in different regions. Taking cotton and wheat as examples, the classification thresholds of water productivity are shown in Table A10:

[0094]

[0095] Labor productivity (A11) is used to evaluate the efficiency of workers in producing products or providing services per unit time. It reflects the utilization effect of labor resources and the comprehensive influence of factors such as production technology level and management level on production efficiency. The specific calculation method is as follows:

[0096] [Labor productivity] = [Yield of typical crops ÷ rural population]

[0097] The classification thresholds of the labor productivity index are shown in Table A11:

[0098]

[0099] The proportion of farmers adopting water-saving irrigation technology (A12) is used to evaluate the popularization degree of water-saving irrigation technology among farmers, and can intuitively reflect the promotion willingness and effectiveness of this technology in the field of agricultural irrigation. The specific calculation method is as follows:

[0100] [Proportion of farmers adopting water-saving irrigation technology] = [Number of farmers adopting water-saving technology ÷ Total number of farmers]

[0101] The classification thresholds of the proportion of farmers adopting water-saving irrigation technology are shown in Table A12:

[0102]

[0103] The growth rate of the irrigation area per agricultural laborer (A13) is mainly used to evaluate the improvement of the management efficiency of agricultural labor, reflecting the growth degree of the land area that can be irrigated by each agricultural laborer on average within a certain period, and reflecting the change of agricultural irrigation labor productivity. The specific calculation method is as follows:

[0104] [Growth rate of the irrigation area per agricultural laborer] = [(Irrigation area per agricultural laborer after adopting water-saving technology - Irrigation area per agricultural laborer before adoption) ÷ Irrigation area per agricultural laborer before adoption]

[0105] The classification thresholds for the growth rate of the per capita irrigated area of agricultural labor are shown in Table A13:

[0106]

[0107] The land use improvement rate (A14) is used to analyze the impact of water-saving irrigation on the optimization of land use structure and the sustainable use of land resources. The specific calculation method is as follows:

[0108] [Land use improvement rate] = [Irrigation-before land use area ÷ Irrigation-after land use area]

[0109] The classification thresholds for the land use improvement rate index are shown in Table A14:

[0110]

[0111] Based on the actual development level of water-saving irrigation in different regions, determine the evaluation indicators related to the current scenario among the above-mentioned baseline evaluation indicators of water-saving irrigation. Then, according to each evaluation indicator, query the classification thresholds in Tables A1 to A14 to obtain the values of each indicator and standardize them to obtain several water-saving irrigation level evaluation indicator values.

[0112] Specifically, the rural poverty evaluation indicators are shown in Table 2, with a total of 5 restrictive indicators.

[0113] Table 2: Evaluation Indicators of Rural Poverty

[0114]

[0115] Corresponding to the rural poverty evaluation indicators, the specific method for determining the evaluation data is as follows:

[0116] The per capita disposable income of rural poor families (B1) is mainly used to evaluate the actual disposable economic ability of rural poor families, intuitively reflecting their living standards and economic conditions, and is a key indicator for judging the degree of poverty and the effectiveness of poverty alleviation. The specific calculation method is as follows:

[0117] [Per capita disposable income of rural poor families] = [(Total family income - Taxes and fees paid - Household operating expenses - Depreciation of productive fixed assets - Expenses for giving gifts to relatives and friends within the rural area) ÷ Permanent household population]

[0118] The classification thresholds for the per capita disposable income of rural poor families are shown in Table B1:

[0119]

[0120] The determination of these classification thresholds also needs to comprehensively consider factors such as price levels, living cost differences, government poverty alleviation policies, and social assistance in different regions, and will be dynamically adjusted with the development of the economy and society.

[0121] The rural poverty incidence rate (B2) is mainly used to evaluate the breadth of the rural poverty phenomenon, intuitively reflecting the proportion of the poor population in rural areas and the severity of the poverty problem in the region. The specific calculation method is as follows:

[0122] [Rural poverty incidence rate] = [Number of rural poor people ÷ Total rural population]

[0123] The classification thresholds of the rural poverty incidence rate indicator are shown in Table B2:

[0124]

[0125] The per capita consumption expenditure of rural poor families (B3) is mainly used to evaluate the actual living standards of poor families, including the degree of satisfaction of basic living needs and the rationality of the consumption structure, and can also indirectly reflect the family economic pressure situation. The specific calculation method is as follows:

[0126] [Per capita consumption expenditure of rural poor families] = [Total consumption expenditure of rural poor families ÷ Number of permanent residents in the family]

[0127] The classification thresholds of the per capita consumption expenditure of rural poor families are shown in Table B3:

[0128]

[0129] The living standards of rural residents (B4) are mainly used to evaluate the comprehensive situation of rural residents in terms of material life (such as income, consumption, housing, etc.) and spiritual life (such as education, culture and entertainment, etc.), so as to reflect the development degree of rural areas and the living quality of residents. The Engel coefficient is used to represent the living standards of residents. The specific calculation method is as follows:

[0130] [Engel coefficient] = [Total food expenditure ÷ Total consumption expenditure]

[0131] The classification thresholds of the living standards of rural residents indicator are shown in Table B4:

[0132]

[0133] The educational and cultural level of rural residents (B5) is mainly used to evaluate the quality of rural human resources and the degree of rural social civilization, including measuring the quality of rural labor force, the situation of social progress, and the fairness of rural residents' access to knowledge and development opportunities. The educational and cultural level of rural residents is represented by the average years of education of rural residents.

[0134] The classification thresholds of the educational and cultural level of rural residents indicator are shown in Table B5:

[0135]

[0136] Identify the evaluation indicators related to the current rural poverty situation among the above-mentioned rural poverty evaluation indicators, and then obtain the values of each indicator according to the corresponding calculation formulas of each evaluation indicator and standardize them to obtain several rural poverty evaluation indicators.

[0137] The grading thresholds of the above water-saving irrigation level evaluation and rural poverty evaluation indicators are all reference standards, and can be adjusted according to the differences in resource endowments, social economy, agricultural production models, and agricultural development strategies in the research area during actual application.

[0138] Furthermore, in step two, construct a water-saving irrigation level function and a rural poverty function according to the rural poverty situation and the current situation of water-saving irrigation development in the region.

[0139]

[0140] Among them, (i = 1, 2) represents the water-saving irrigation subsystem and the rural poverty subsystem, (j = 1, 2,...) represents the number of indicators, and U i is the subsystem comprehensive index, n i is the number of subsystem indicators, x ij is the value of each corresponding indicator in each subsystem, w ij is the weight corresponding to each corresponding indicator in each subsystem, and the sum of the weights in each subsystem is 1, that is

[0141]

[0142] After determining the specific indicator items and the corresponding weights, complete the construction of the water-saving irrigation development level function and the rural poverty function.

[0143] Furthermore, in step three, obtain the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem according to the above functions and indicator values, and perform weighted summation on the dimensionless indicator values according to their corresponding weights to obtain the comprehensive evaluation index.

[0144]

[0145] Among them, U1 and U2 are the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem respectively, n1 and n2 are the numbers of indicators of the water-saving irrigation subsystem and the rural poverty subsystem respectively, w 1j and w 2j are the weights of each indicator respectively, x 1j and x 2j are the dimensionless indicator values respectively.

[0146] Furthermore, obtain the coupling degree of water-saving irrigation and rural poverty according to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem.

[0147]

[0148] Among them, C is the coupling degree, and its value ranges from [0, 1]. The closer the value is to 1, the higher the coupling degree between systems; conversely, the lower it is. U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem. The coupling degree can be divided into 5 types as shown in Table 3:

[0149]

[0150]

[0151] According to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem, calculate the coordination index reflecting the overall synergy effect between the water-saving irrigation subsystem and the rural poverty subsystem. The specific expression is:

[0152]

[0153] Among them, T is the coordination index, a and b are set coefficients; U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem.

[0154] On the basis of judging the interactive coupling state between the development level of water-saving irrigation and rural poverty, calculate the coupling coordination degree between the two subsystems to evaluate the coordination state of the two subsystems. According to the coupling degree and the coordination index, obtain the coupling coordination degree. The specific expression is:

[0155]

[0156] Among them, D is the coupling coordination degree, and its value ranges from (0, 1). The closer the value is to 1, the higher the coupling coordination degree between systems; conversely, the lower it is. T is the coordination index; C is the coupling degree.

[0157] The coupling coordination degree can be divided into four levels as shown in Table 4:

[0158] Coupling coordination degree range Coupling coordination state 0<D≤0.4 Low-degree coordinated coupling 0.4<D≤0.6 Medium-degree coordinated coupling 0.6<D≤0.8 High-degree coordinated coupling 0.8<D<1 Extreme-degree coordinated coupling

[0159] When 0 < D ≤ 0.4, it is low-degree coordinated coupling, indicating that the overall coordination effect or mutual contribution is low; when 0.4 < D ≤ 0.6, it is medium-degree coordinated coupling, indicating that the overall synergy effect or contribution is at a medium level; when 0.6 < D ≤ 0.8, it is high-degree coordinated coupling, indicating that the overall synergy effect or contribution rate has reached a relatively high level; when 0.8 < D < 1, it is extremely coordinated coupling, indicating that the overall synergy effect or contribution rate has reached an extremely high level, that is, mutual promotion and coordinated development.

[0160] In summary, the coupling coordination degree of the water-saving irrigation development level and rural poverty is obtained based on the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem. Through the coupling coordination degree, the coordination and coupling degree between the water-saving irrigation development level and rural poverty can be evaluated.

[0161] This embodiment also discloses a method for analyzing the coordination mode between the water-saving irrigation development level and rural poverty, as Figure 2 shown. According to the coordination evaluation method for the water-saving irrigation development level and rural poverty described in any one of the above, it is characterized by including the following steps:

[0162] Obtain the coupling coordination degree;

[0163] Use the grey relational analysis model to determine the key influencing factors of the coordination level between the water-saving irrigation development level and rural poverty;

[0164] Sort and classify the influencing factors according to the size of the correlation degree, analyze in combination with the development status of local water-saving irrigation and poverty reduction work, and summarize the correlation coefficients into four blocks according to the criterion layer;

[0165] Determine the coordination mode between the water-saving irrigation development level and rural poverty according to the above influencing factor analysis and the coupling coordination degree.

[0166] Specifically, select the coupling coordination degree of the water-saving irrigation development level and rural poverty as the reference sequence, and the criterion layer indicators of the comprehensive evaluation index system of water-saving irrigation and the comprehensive evaluation index system of rural poverty as the comparison sequences. Use the standardized data, and according to the grey relational coefficient and grey relational degree calculation formula, calculate the grey relational coefficients of each index layer indicator in the comprehensive evaluation index systems of water-saving irrigation and rural poverty for the coupled and coordinated development of the two systems.

[0167]

[0168] Where ξ(y i (k),x i (k)) is the grey relational coefficient, is the first-level minimum difference, that is, among the absolute differences, |y' i (k)-x' i (k)| selects the minimum value among them according to different k values. is the second-level minimum difference, that is, among |y' i (k)-x' i (k)|, selects the minimum value among them according to different i values (comparison sequence values). Similarly, max k |y' i (k)-x' i (k)| is the first-level maximum difference, max imax k |y' i (k)-x' i (k)| is the second-level maximum difference, and its meaning is similar to that of the second-level minimum difference. ρ is the resolution coefficient, and generally ρ = 0.5.

[0169] x i For y i the grey correlation degree expression is:

[0170]

[0171] where γ ij is the correlation degree. The closer γ ij is to 1, the higher the correlation degree, that is, the influence degree of the index layer index on the coupling coordination degree of water-saving irrigation and rural poverty is greater, and it is the key factor determining whether the two systems can develop in a coupled and coordinated manner.

[0172] Referring to relevant research, the judgment criteria for the grey correlation level are defined as shown in Table 5:

[0173] Grey relational degree range Degree of correlation <![CDATA[0 < γ ij ≤ 0.3]]> Low-degree correlation <![CDATA[0.3 < γ ij ≤ 0.5]]> Lower-degree correlation <![CDATA[0.5 < γ ij ≤ 0.7]]> Medium-degree correlation <![CDATA[0.7 < γ ij ≤ 0.9]]> Higher-degree correlation <![CDATA[0.9 < γ ij ≤ 1]]> High-degree correlation

[0174] (4) Sort and classify the 19 factors according to the magnitude of the correlation degree, focus on the factors distributed in the high correlation and low correlation, analyze in combination with the development status of local water-saving irrigation and poverty reduction work, and summarize the correlation degree coefficients into four blocks according to the criterion layer.

[0175] (5) Determine the coordination mode of the development level of water-saving irrigation and rural poverty according to the above influence factor analysis and the coupling coordination degree.

[0176] As described above, the present invention constructs an analysis method for the coordination mode of the development level of water-saving irrigation and rural poverty.

[0177] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among 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 description in the method part.

[0178] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coordinated evaluation method for water-saving irrigation development level and rural poverty, characterized in that: The following steps are involved: Obtain water-saving irrigation level evaluation indicators and rural poverty evaluation indicators; According to the development level of water-saving irrigation and the current situation of rural poverty, the water-saving irrigation development level function and rural poverty function are constructed; Input the water-saving irrigation level evaluation index into the water-saving irrigation development level function to obtain the comprehensive index of the water-saving irrigation subsystem; input the rural poverty evaluation index into the rural poverty function to obtain the comprehensive index of the rural poverty subsystem; According to the comprehensive index of water-saving irrigation subsystem and the comprehensive index of rural poverty subsystem, the coupling coordination degree of water-saving irrigation development level and rural poverty is obtained.

2. A coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 1, characterized in that: The water-saving irrigation level evaluation indicators include: water resource development degree A1, water conservancy level A2, water-saving irrigation technology development level coefficient A3, channel anti-seepage rate A4, irrigation water utilization coefficient A5, agricultural irrigation investment in the proportion of national total investment A6, water-saving irrigation technology investment coefficient A7, agricultural irrigation cost in farmers' total cost A8, water consumption per 10,000 yuan of GDP A9, typical crop water productivity A10, labor productivity A11, the proportion of farmers using water-saving irrigation technology A12, agricultural labor per capita irrigation area growth rate A13, land utilization improvement rate A14.

3. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 1, characterized in that: The rural poverty evaluation indicators include: per capita disposable income of rural poor families B1, rural poverty incidence B2, per capita consumption expenditure of rural poor families B3, living standards of rural residents B4 and educational and cultural levels of rural residents B5.

4. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 1, characterized in that: The water-saving irrigation level function and rural poverty function are as follows: Among them, (i=1, 2) represents the water-saving irrigation subsystem and the rural poverty subsystem, (j=1, 2, ...) represents the number of indicators, U i is the subsystem comprehensive index, n i is the number of subsystem indicators, x ij is the corresponding indicator value in each subsystem, w ij is the corresponding weight of each indicator in each subsystem, and the sum of the weights in each subsystem is 1, that is, After determining the specific indicator items and the corresponding weights, the construction of the water-saving irrigation development level function and the rural poverty function is completed.

5. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 1, characterized in that: The calculation formulas for the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem are as follows: Among them, U1 and U2 are the comprehensive index of water-saving irrigation subsystem and rural poverty subsystem, n1 and n2 are the number of indicators of water-saving irrigation subsystem and rural poverty subsystem, respectively. 1j and w 2j are the weights of each indicator, x 1j and x 2j are dimensionless index values.

6. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 1, characterized in that: The coupling coordination degree of water-saving irrigation development level and rural poverty is obtained according to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem, including: According to the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem, the coupling degree between the water-saving irrigation subsystem and the rural poverty subsystem is calculated; Based on the comprehensive index of the water-saving irrigation subsystem and the comprehensive index of the rural poverty subsystem, the coordination index reflecting the overall synergy between the water-saving irrigation subsystem and the rural poverty subsystem is calculated; The coupling coordination degree is obtained according to the coupling degree and the coordination index.

7. A coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 6, characterized in that: The coupling degree calculation formula is as follows: Among them, C is the coupling degree, U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem.

8. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 6 is characterized in that: The coordination index reflecting the overall synergy between the water-saving irrigation subsystem and the rural poverty subsystem is calculated. The specific expression is: Among them, T is the coordination index, a and b are the setting coefficients; U1 is the comprehensive index of the water-saving irrigation subsystem, and U2 is the comprehensive index of the rural poverty subsystem.

9. The coordinated evaluation method for water-saving irrigation development level and rural poverty according to claim 6, characterized in that: According to the coupling degree and the coordination index, the coupling coordination degree is obtained, and the specific expression is: Among them, D is the coupling coordination degree, which ranges from (0,1). The closer the value is to 1, the higher the degree of coupling coordination between systems, and vice versa; T is the coordination index; C is the coupling degree.

10. A method for analyzing the coordination model of water-saving irrigation development level and rural poverty, according to any one of claims 1 to 9, characterized in that: The following steps are involved: Obtain coupling coordination degree; The grey correlation analysis model was used to determine the influencing factors of water-saving irrigation development level and rural poverty coordination level; The influencing factors were sorted and graded according to the degree of correlation, analyzed in combination with the current status of local water-saving irrigation and poverty reduction work, and the correlation coefficients were divided into four blocks according to the criterion layer for summary; According to the analysis of the influencing factors and the coupling coordination degree, a coordination model between the development level of water-saving irrigation and rural poverty is determined.

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