Regional water resource sustainable utilization evaluation method, system and equipment and storage medium

Abstract

The invention discloses a regional water resource sustainable utilization evaluation method, system and device and a storage medium, and the method comprises the steps: calculating the Gini coefficient of the total amount of regional water resources and the population number in a water taking link, and determining a water resource fairness index; in a water consumption link, constructing a DEA model to calculate the efficiency of regional water resource input and economic output, and determining a water resource efficiency index; in the drainage link, the ratio of the ecological footprint of the regional water consumption to the ecological bearing capacity is calculated, and a water resource safety index is determined; and constructing a regional water resource sustainable utilization index calculation formula, and determining the water resource sustainable utilization level according to the size and level of the index. According to the method, the fairness of water and society, the efficiency of water and economy and the safety of water and ecology in the water resource taking-using-discharging process are comprehensively considered, the sustainable utilization level of the regional water resource is quantified, the evaluation of the sustainable utilization of the water resource is more objective, comprehensive, simple and efficient, and an effective technical basis can be provided for identifying the sustainable utilization of the regional water resource.

Description

Technical Field

[0001] The present invention belongs to the technical field of evaluation methods for sustainable utilization of water resources, and particularly relates to an evaluation method, system, device and storage medium for sustainable utilization of regional water resources. Background Art

[0002] Accurately evaluating the true state of sustainable utilization of water resources is the basis for improving the increasingly prominent contradiction between humans and water. Sustainable utilization of water resources should not only meet the water use needs of the current generation, but also meet the water use needs of future generations, that is, it emphasizes the coordinated and sustainable development of water resources with society, economy and ecology. In terms of the evaluation dimension of sustainable utilization of water resources, current research mainly focuses on single dimensions such as social fairness, economic efficiency or ecological security of water resources, and less comprehensively considers the combined effects of multiple dimensions. In terms of the evaluation method for sustainable utilization of water resources, existing research mainly focuses on establishing an evaluation index system, but there are some deficiencies, such as a relatively large subjectivity in the judgment process and insufficient representativeness of indicators. Summary of the Invention

[0003] Object of the Invention: The object of the present invention is to provide an evaluation method for sustainable utilization of regional water resources with more objective and comprehensive evaluation.

[0004] Another object of the present invention is to provide a system corresponding to the above method.

[0005] Technical Solution: The evaluation method for sustainable utilization of regional water resources according to the present invention includes:

[0006] In the water intake link, collect data on the total amount of water resources and the number of permanent residents in the research area, calculate the Gini coefficient between the total amount of water resources and the number of permanent residents in the research area, and use the Gini coefficient to characterize the water resource fairness index WFI;

[0007] In the water use link, collect data on regional water resource input, labor input, capital input, and economic output, and use the data envelopment analysis DEA model to calculate the regional water resource efficiency index WEI;

[0008] In the water drainage link, calculate the regional water resource ecological footprint WEF according to the water quantity ecological footprint and the water quality ecological footprint, and construct a calculation formula for the water resource security index WSI according to the ratio of the regional water resource ecological footprint WEF to the water resource ecological carrying capacity WEC, and use the water resource security index WSI to characterize the water resource utilization safety level;

[0009] According to the water resource fairness index, the water resource efficiency index, and the water resource security index, construct a calculation formula for the regional water resource sustainable utilization index WSUI, and determine the sustainable utilization level of water resources by determining the sustainable utilization level of water resources according to the value of the water resource sustainable utilization index.

[0010] Furthermore, the calculation formula for the water resources fairness index is as follows:

[0011]

[0012] where WFI is the water resources fairness index; m is the number of sub-regions included in the research area, k is the sub-region serial number, X k is the cumulative percentage of the total water resources in the k-th sub-region, X k-1 is the cumulative percentage of the total water resources in the (k - 1)-th sub-region, Y k is the cumulative percentage of the permanent resident population in the k-th sub-region, Y k-1 is the cumulative percentage of the permanent resident population in the (k - 1)-th sub-region.

[0013] Furthermore, the data envelopment analysis DEA model is used to calculate the regional water resources efficiency index WEI, and the calculation formula is as follows:

[0014]

[0015] where θ is the relative efficiency value of a group of decision-making units DMU, θ * is the optimal solution, denoted as the water resources efficiency index, j is the number of DMUs, a total of n, x j is the input index of the j-th DMU, x j0 is the input index of the j0-th DMU, y j is the output index of the j-th DMU, y j0 is the output index of the j0-th DMU, λ j is the weight coefficient of the j-th DMU, S - and S + are both slack variables. If θ = 1 and S - = S + = 0, then the j0-th decision-making unit DMU is called DEA effective. If θ = 1 and S - ≠0 or S + ≠0, then the j0-th decision-making unit DMU is called weakly DEA effective. If θ < 1, then the j0-th decision-making unit DMU is called DEA invalid.

[0016] Furthermore, the regional water resources input is the regional water consumption, the labor input is the number of employed persons, the capital input is the fixed asset investment amount, the economic output is the GDP, and the water consumption includes production water consumption, domestic water consumption and ecological water consumption.

[0017] Furthermore, the calculation formula for the water resources security index is as follows:

[0018] WEF = WEF r + WEF q

[0019]

[0020]

[0021] Among them, WEF is the regional water resource ecological footprint; WEF r and WEF q are the regional water volume ecological footprint and water quality ecological footprint respectively. i = 1, 2, 3 represent the production water account, domestic water account and ecological water account of a certain province respectively. W i is the water consumption of the i-th account, P w is the global average water resource production capacity, γ is the global equilibrium factor of water resources, L COD and represent the regional COD and NH3-N emissions respectively, C COD and are the up-to-standard concentration of regional COD and NH3-N emissions respectively. WSI is the water resource security index, α is a coefficient, and its value is based on the actual situation of the region. is the water resource production factor, which is obtained by calculating the ratio of the regional water production modulus to P w . Q is the total amount of regional water resources.

[0022] Furthermore, the calculation formula of the water resource sustainable utilization index is:

[0023]

[0024] Among them, WSUI is the water resource sustainable utilization index, WFI is the water resource fairness index, WEI is the water resource efficiency index, and WSI is the water resource security index.

[0025] Furthermore, the water resource sustainable utilization levels include: completely unsustainable, highly unsustainable, basically unsustainable, nearly sustainable, basically sustainable, highly sustainable and completely sustainable. The range of level division is specifically:

[0026] When the regional water resource sustainable utilization level is completely unsustainable, the value of the regional water resource sustainable utilization index is:

[0027] WSUI = 0

[0028] When the regional water resource sustainable utilization level is highly unsustainable, the value of the regional water resource sustainable utilization index is:

[0029] 0 < WSUI ≤ 0.2

[0030] When the regional water resource sustainable utilization level is basically unsustainable, the value of the regional water resource sustainable utilization index is:

[0031] 0.2 < WSUI ≤ 0.4

[0032] When the sustainable utilization level of water resources in the region is close to sustainable, the value of the sustainable utilization index of water resources in the region is:

[0033] 0.4 < WSUI ≤ 0.6

[0034] When the sustainable utilization level of water resources in the region is basically sustainable, the value of the sustainable utilization index of water resources in the region is:

[0035] 0.6 < WSUI ≤ 0.8

[0036] When the sustainable utilization level of water resources in the region is highly sustainable, the value of the sustainable utilization index of water resources in the region is:

[0037] 0.8 < WSUI < 1

[0038] When the sustainable utilization level of water resources in the region is completely sustainable, the value of the sustainable utilization index of water resources in the region is:

[0039] WSUI = 1

[0040] Where WSUI is the sustainable utilization index of water resources.

[0041] The system corresponding to the method includes:

[0042] A water resources fairness index calculation module, which is used to collect data on the total amount of water resources and the number of permanent residents in the research area during the water intake link, calculate the Gini coefficient between the total amount of water resources and the number of permanent residents in the research area, and use the Gini coefficient to represent the water resources fairness index WFI;

[0043] A water resources efficiency index calculation module, which is used to collect data on water resources input, labor input, capital input, and economic output in the water use link, and use the data envelopment analysis DEA model to calculate the water resources efficiency index WEI of the region;

[0044] A water resources security index calculation module, which is used to calculate the water resources ecological footprint WEF of the region according to the water quantity ecological footprint and water quality ecological footprint in the drainage link, construct a calculation formula for the water resources security index WSI according to the ratio of the water resources ecological footprint WEF and the water resources ecological carrying capacity WEC of the region, and use the water resources security index WSI to represent the water use safety level;

[0045] A water resource sustainable utilization index calculation module is used to construct a calculation formula for the regional water resource sustainable utilization index WSUI based on the water resource fairness index, water resource efficiency index, and water resource security index, determine the water resource sustainable utilization level according to the value of the water resource sustainable utilization index, and further determine the water resource sustainable utilization level.

[0046] An electronic device for storing and executing the method includes a memory and a processor, wherein:

[0047] The memory is used to store a computer program that can run on the processor;

[0048] The processor is used to execute the steps of the regional water resource sustainable utilization evaluation method when running the computer program.

[0049] A computer-readable storage medium for storing and executing the method, the computer-readable storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the steps of the regional water resource sustainable utilization evaluation method.

[0050] Beneficial effects: Compared with the prior art, the significant technical effects of the present invention are as follows: comprehensively considering the fairness between water and society, the efficiency between water and economy, and the security between water and ecology in the process of water intake - use - discharge, the water resource fairness index, water resource efficiency index, and water resource security index are respectively constructed based on the Gini coefficient method, DEA model, and ecological footprint model, and a water resource sustainable utilization index evaluation method is constructed accordingly, which can quantify the regional water resource sustainable utilization level, make the evaluation of water resource sustainable utilization more objective, comprehensive, simple and efficient, and thus solve the problems of insufficient comprehensiveness of evaluation dimensions, large subjectivity in the determination process, and insufficient representativeness of indicators in the prior art. Brief Description of the Drawings

[0051] Figure 1 It is a schematic flowchart of a regional water resource sustainable utilization evaluation method provided for an embodiment;

[0052] Figure 2 It is a schematic flowchart of the calculation of step S103 of a regional water resource sustainable utilization evaluation method provided for an embodiment;

[0053] Figure 3 It is a schematic diagram of a regional water resource sustainable utilization evaluation system provided for an embodiment. Detailed Description of the Invention

[0054] The present invention will be described in detail below with reference to embodiments and the accompanying drawings. Through systematic description of the embodiments of the present invention, the scientific nature and rationality of the calculation results of the present invention are verified. It should be noted that the protection scope of the present invention is not limited to the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts related to the concepts and calculation methods mentioned in the present invention belong to the protection scope of the present invention.

[0055] As Figure 1 shown, the method of the present invention includes the following steps:

[0056] S101. In the water intake link, collect data on the total amount of water resources and the number of permanent residents in the research area, and calculate the Gini coefficient between the total amount of water resources and the number of permanent residents in the research area as the water resource fairness index (WFI). The calculation formula for the water resource fairness index is:

[0057]

[0058] where WFI is the water resource fairness index; m is the number of sub-areas included in the research area, k is the sub-area serial number, X k is the cumulative percentage of the total amount of water resources in the k-th sub-area, X k-1 is the cumulative percentage of the total amount of water resources in the (k - 1)-th sub-area, Y k is the cumulative percentage of the number of permanent residents in the k-th sub-area, Y k-1 is the cumulative percentage of the number of permanent residents in the (k - 1)-th sub-area.

[0059] S102. In the water use link, collect data such as regional water resource input (water consumption), labor input (number of employed persons), capital input (fixed asset investment), and economic output (GDP), and use the data envelopment analysis (DEA) model to calculate the regional water resource efficiency index (WEI). The optimal solution of the relative efficiency value of the j0-th decision-making unit (DMU) with multiple inputs and outputs is used as the regional water resource efficiency index. The calculation formula is:

[0060]

[0061] where θ is the relative efficiency value of a group of DMUs, θ * is the optimal solution, denoted as the water resource efficiency index, j is the number of DMUs, a total of n, x j is the input index of the j-th DMU, x j0 is the input index of the j0-th DMU, y j is the output index of the j-th DMU, y j0 is the output index of the j0-th DMU, λ jis the weight coefficient of the j-th DMU, S - and S + are both slack variables. If θ = 1 and S - = S + = 0, then the j0-th DMU is called DEA efficient. If θ = 1 and S - ≠ 0 or S + ≠ 0, then the j0-th DMU is called weakly DEA efficient. If θ < 1, then the j0-th DMU is called DEA inefficient.

[0062] The water consumption mentioned above is the sum of production water consumption, domestic water consumption, and ecological water consumption.

[0063] S103. In the drainage link, calculate the regional water resource ecological footprint WEF according to the water quantity ecological footprint and water quality ecological footprint. According to the ratio of the regional water resource ecological footprint WEF to the water resource ecological carrying capacity WEC, construct the calculation formula of the water resource security index (WSI), and use the water resource security index WSI to characterize the water resource utilization security level. The calculation formula of the water resource security index is as follows:

[0064] WEF = WEF r + WEF q (3)

[0065]

[0066] where, WEF is the regional water resource ecological footprint (hm 2 ); WEF r and WEF q are the regional water quantity ecological footprint and water quality ecological footprint (hm 2 ), respectively. i = 1, 2, 3 represent the production water account, domestic water account, and ecological water account of a certain province respectively. W i is the water consumption of the i-th account (m 3 ), Q is the total regional water resource volume (m 3 ), P w is the global average water resource production capacity, with a value of 3140 m 3 / hm 2 , γ is the global equilibrium factor of water resources, with a value of 5.19, is the water resource production factor, obtained by calculating the ratio of the regional water production modulus to P w . α is a coefficient, and its value is based on the actual situation of the region. L COD and L NH3-N represent the regional COD and NH3-N emissions (tons) respectively. C COD and C NH3-N are the regional COD and NH3-N emission compliance concentrations respectively. WSI is the water resource security index;

[0067] S104. Construct a calculation formula for the regional water resources sustainable utilization index WSUI based on the water resources fairness index, water resources efficiency index, and water resources security index. Determine the water resources sustainable utilization level by determining the water resources sustainable utilization grade according to the value of the water resources sustainable utilization index.

[0068] Since the ideal values of the water resources fairness index, water resources efficiency index, and water resources security index are 0, 1, and 0 respectively, the maximum Euclidean distance of the three indices is Construct a regional water resources sustainable utilization index (WSUI), and the calculation formula for the water resources sustainable utilization index is as follows:

[0069]

[0070] where WSUI is the water resources sustainable utilization index, WFI is the water resources fairness index, WEI is the water resources efficiency index, and WSI is the water resources security index.

[0071] The water resources sustainable utilization includes seven grades, namely: completely unsustainable, highly unsustainable, basically unsustainable, nearly sustainable, basically sustainable, highly sustainable, and completely sustainable. The division ranges are specifically as follows:

[0072] When the regional water resources sustainable utilization level is completely unsustainable, the value of the regional water resources sustainable utilization index is:

[0073] WSUI = 0

[0074] When the regional water resources sustainable utilization level is highly unsustainable, the value of the regional water resources sustainable utilization index is:

[0075] 0 < WSUI ≤ 0.2

[0076] When the regional water resources sustainable utilization level is basically unsustainable, the value of the regional water resources sustainable utilization index is:

[0077] 0.2 < WSUI ≤ 0.4

[0078] When the regional water resources sustainable utilization level is nearly sustainable, the value of the regional water resources sustainable utilization index is:

[0079] 0.4 < WSUI ≤ 0.6

[0080] When the regional water resources sustainable utilization level is basically sustainable, the value of the regional water resources sustainable utilization index is:

[0081] 0.6 < WSUI ≤ 0.8

[0082] When the sustainable utilization level of water resources in the region is highly sustainable, the value of the sustainable utilization index of water resources in the region is:

[0083] 0.8 < WSUI < 1

[0084] When the sustainable utilization level of water resources in the region is fully sustainable, the value of the sustainable utilization index of water resources in the region is:

[0085] WSUI = 1

[0086] Among them, WSUI is the sustainable utilization index of water resources.

[0087] Next, the evaluation method will be described in detail by taking the sustainable utilization of water resources in some provinces of China as an example. Among them, a certain province is taken as the research area, and the prefecture-level cities in the province are taken as sub-regions for description.

[0088] (1) Collect data on the total amount of water resources and the permanent population in a certain province, calculate the Gini coefficient between the total amount of water resources and the permanent population in a certain province, and calculate the water resources fairness index (WFI) of a certain province according to formula (1);

[0089] (2) Collect data such as water resources input (water consumption), labor input (number of employed persons), capital input (fixed asset investment), and economic output (GDP) in a certain province, and use the DEA model to calculate the water resources efficiency index (WEI) of a certain province. The water resources efficiency calculation formula is formula (2).

[0090] The water consumption of a certain province is the sum of the production water consumption, domestic water consumption, and ecological water consumption in a certain province.

[0091] (3) Calculate the water resources security index. As Figure 2 shown, first calculate the water resources ecological footprint (WEF) of a certain province. The water resources ecological footprint of a certain province is the sum of the water quantity ecological footprint and the water quality ecological footprint of a certain province. Secondly, calculate the water resources ecological carrying capacity (WEC) of a certain province. Finally, calculate the ratio of the water resources ecological footprint to the water resources carrying capacity to obtain the water resources security index (WSI) of a certain province. The water resources security index calculation formula is shown in formulas (3) to (7).

[0092] (4) Since the ideal values of the water resources fairness index, water resources efficiency index, and water resources security index of a certain province are 0, 1, and 0 respectively, and their maximum Euclidean distance is Calculate the water resources sustainable utilization index (WSUI) of a certain province according to formula (8).

[0093] Experimental verification:

[0094] 1. Calculation results of water resource fairness index, efficiency index, security index, and sustainable utilization index.

[0095] In this embodiment, by collecting relevant index data of 31 provinces in China in 2019, the water resource fairness index, water resource efficiency index, water resource security index, and water resource sustainable utilization index of 31 provinces in China in 2019 are calculated, and the results are shown in Table 1.

[0096] Table 1: Water resource fairness index, efficiency index, security index, sustainable utilization index

[0097]

[0098]

[0099] Note: The above results are reserved to two decimal places.

[0100] 2. Judgment of the sustainable utilization degree of water resources in each province:

[0101] According to the water resource sustainable utilization index calculated in this embodiment, judge the sustainable utilization degree of water resources in 31 provinces.

[0102] Regarding the sustainable utilization degree of water resources, Beijing is close to sustainable, Tianjin is basically unsustainable, Hebei is basically unsustainable, Shandong is close to sustainable, Shanxi is close to sustainable, Henan is close to sustainable, Shaanxi is close to sustainable, Inner Mongolia is basically unsustainable, Liaoning is close to sustainable, Jilin is close to sustainable, Heilongjiang is basically unsustainable, Shanghai is basically sustainable, Jiangsu is close to sustainable, Zhejiang is basically sustainable, Anhui is close to sustainable, Jiangxi is basically sustainable, Hubei is close to sustainable, Hunan is basically sustainable, Fujian is basically sustainable, Guangdong is basically sustainable, Hainan is close to sustainable, Guangxi Zhuang Autonomous Region is close to sustainable, Chongqing is basically sustainable, Sichuan is close to sustainable, Guizhou is close to sustainable, Yunnan is close to sustainable, Tibet Autonomous Region is close to sustainable, Gansu is basically unsustainable, Qinghai is close to sustainable, Ningxia Hui Autonomous Region is basically unsustainable, Xinjiang Uygur Autonomous Region is basically unsustainable;

[0103] In the above steps, by integrating the water resource fairness index, water resource efficiency index, and water resource security index to construct the regional water resource sustainable utilization index, an evaluation method for regional water resource sustainable utilization that comprehensively considers the fairness between water and society, the efficiency between water and economy, and the security between water and ecology can be obtained. Thus, the level of regional water resource sustainable utilization can be quantified, making the evaluation of water resource sustainable utilization more objective, comprehensive, simple, and efficient, and further solving the problems of insufficient comprehensiveness of evaluation dimensions, high subjectivity in the determination process, and insufficient representativeness of indicators in the prior art.

[0104] This embodiment quantifies the level of water resource sustainable utilization in 31 provinces in inland China, reflects the applicability of the present invention to a certain extent. At the same time, the results of this embodiment provide a scientific and reasonable technical method for the evaluation of regional water resource sustainable utilization, and the evaluation results are consistent with the actual situation to a certain extent, verifying the rationality of the present invention.

[0105] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0106] The embodiment of the present application also provides a water resource sustainable utilization evaluation system. It should be noted that the regional water resource sustainable utilization evaluation system of the embodiment of the present application can be used to execute the method for evaluating regional water resource sustainable utilization provided by the embodiment of the present application. The following introduces the regional water resource sustainable utilization evaluation system provided by the embodiment of the present application.

[0107] Figure 3 is a schematic diagram of a regional water resource sustainable utilization evaluation system provided according to an embodiment of the present application. As Figure 3As shown in the figure, the system includes a water resource fairness index calculation module, a water resource efficiency index calculation module, a water resource security index calculation module, and a water resource sustainable utilization index calculation module. The water resource fairness index calculation module is used to calculate the water resource fairness index between the total regional water resources and the permanent resident population by using the Gini coefficient method. The water resource efficiency index calculation module is used to calculate the water use efficiency of the regional input indicators and economic output indicators by using the DEA model. The water resource security index calculation module is used to calculate the ratio of the regional water resource ecological footprint to the water resource ecological carrying capacity and construct a water resource security index calculation formula. The water resource sustainable utilization index calculation module is used to construct a regional water resource sustainable utilization index calculation formula and determine the water resource sustainable utilization level according to the water resource fairness index, the water resource efficiency index, and the water resource security index. Among them, the above water resource sustainable utilization levels are one of the following results: completely unsustainable, highly unsustainable, basically unsustainable, nearly sustainable, basically sustainable, highly sustainable, and completely sustainable.

[0108] In the above system, by integrating the water resource fairness index, the water resource efficiency index, and the water resource security index to construct the regional water resource sustainable utilization index, an evaluation method for the regional water resource sustainable utilization that comprehensively considers the fairness between water and society, the efficiency between water and economy, and the security between water and ecology can be obtained. Thus, the level of regional water resource sustainable utilization can be quantified, making the evaluation of water resource sustainable utilization more objective, comprehensive, simple, and efficient. Furthermore, the problems of insufficient comprehensiveness of evaluation dimensions, high subjectivity in the determination process, and lack of representativeness of indicators in the prior art are solved.

[0109] In an embodiment of the present application, the water resource security index calculation module includes data collection and determination of the water resource fairness index. The data collection is used to collect the total regional water resources and the regional permanent resident population, and the determination of the water resource fairness index is used to calculate the water resource fairness index. The water resource efficiency index calculation module includes data collection and determination of the water resource efficiency index. The data collection is used to collect data such as regional water resource input (water consumption), labor input (number of employed persons), capital input (fixed asset investment), and economic output (GDP), and the determination of the water resource efficiency index is used to calculate the water resource efficiency index. The water resource security index calculation module includes calculation of the regional water resource ecological footprint, water resource ecological carrying capacity, and determination of the water resource security index. The calculation of the regional water resource ecological footprint is used to determine the water quantity and water quality ecological footprints of the region, the calculation of the regional water resource ecological carrying capacity is used to determine the regional water resource ecological carrying capacity, and the determination of the water resource security index is used to calculate the water resource security index. The water resource sustainable utilization index calculation module includes indicator selection and determination of the water resource sustainable utilization index. The indicator selection includes the water resource fairness index, the water resource efficiency index, and the water resource security index, and the determination of the water resource sustainable utilization index is used to calculate the water resource sustainable utilization index.

[0110] In one embodiment of the present application, the water resource fairness index calculation module includes collecting data and determining the water resource fairness index. The data collection is used to collect the total regional water resources and the number of permanent residents in the region. The determination of the water resource fairness index is used to calculate the water resource fairness index. Where WFI is the water resource fairness index; m is the number of sub-regions included in the research region, k is the sub-region serial number, and X k is the cumulative percentage of the total water resources in the k-th sub-region, and Y k is the cumulative percentage of the number of permanent residents in the k-th sub-region; the water resource efficiency index calculation module includes collecting data and determining the water resource efficiency index. The data collection is used to collect data such as regional water resource input (water consumption), labor input (number of employed persons), capital input (fixed asset investment), and economic output (GDP). The determination of the water resource efficiency index is used to calculate the water resource efficiency index, and the calculation is performed using the data envelopment analysis (DEA) model. For the relative efficiency value calculation formula of the j0-th decision-making unit (DMU) with multiple inputs and outputs, it is Where θ is the relative efficiency value of a group of DMUs, and θ * is the optimal solution, which is denoted as the water resource efficiency index. j is the number of DMUs, a total of n. x j is the input index of the j-th DMU, and x j0 is the input index of the j0-th DMU, and y j is the output index of the j-th DMU, and y j0 is the output index of the j0-th DMU, and λ j is the weight coefficient of the j-th DMU, and S - and S + are both slack variables. If θ = 1 and S - = S + = 0, then the j0-th DMU is called DEA efficient. If θ = 1 and S - ≠ 0 or S + ≠ 0, then the j0-th DMU is called weakly DEA efficient. If θ < 1, then the j0-th DMU is called DEA inefficient; the water resource security index calculation module includes calculating the regional water resource ecological footprint, water resource ecological carrying capacity, and determining the water resource security index. Calculating the regional water resource ecological footprint WEF = WEF r + WEF q , which is used to determine the regional water volume ecological footprint and the regional water quality ecological footprint Calculating the regional water resource ecological carrying capacity is used to determine the regional water resource ecological carrying capacity Determining the water resource security index is used to calculate the water resource security index Among them, WEF is the regional water resources ecological footprint (hm 2 ); WEF r and WEF q are the regional water quantity ecological footprint and water quality ecological footprint (hm 2 ), respectively. i = 1, 2, 3 represent the production water account, domestic water account, and ecological water account of a certain province. W i is the water consumption of the i-th account (m 3 ), Q is the total regional water resources volume (m 3 ), P w is the global average water resources production capacity, with a value of 3140 m 3 / hm 2 . γ is the global equilibrium factor of water resources, with a value of 5.19. is the water resources production factor, obtained by calculating the ratio of the regional water production modulus to P w . α is a coefficient, and its value is based on the actual situation of the region. L COD and L NH3-N represent the regional COD and NH3-N emissions (tons), respectively. C COD and C NH3-N are the regional COD and NH3-N emission compliance concentrations, respectively. WSI is the water resources security index; the water resources sustainable utilization index calculation module includes selecting indicators and determining the water resources sustainable utilization index. The selected indicators include the water resources fairness index, water resources efficiency index, and water resources security index. Determining the water resources sustainable utilization index is used to calculate the water resources sustainable utilization index Among them, WSUI is the water resources sustainable utilization index, WFI is the water resources fairness index, WEI is the water resources efficiency index, and WSI is the water resources security index. The above-mentioned sustainable utilization of water resources includes seven levels: completely unsustainable, highly unsustainable, basically unsustainable, nearly sustainable, basically sustainable, highly sustainable, and completely sustainable. The specific division range is as follows: when the regional water resources sustainable utilization level is completely unsustainable, the value of the above-mentioned regional water resources sustainable utilization index is WSUI = 0; when the regional water resources sustainable utilization level is highly unsustainable, the value of the above-mentioned regional water resources sustainable utilization index is 0 < WSUI ≤ 0.2; when the regional water resources sustainable utilization level is basically unsustainable, the value of the above-mentioned regional water resources sustainable utilization index is 0.2 < WSUI ≤ 0.4; when the regional water resources sustainable utilization level is nearly sustainable, the value of the above-mentioned regional water resources sustainable utilization index is 0.4 < WSUI ≤ 0.6; when the regional water resources sustainable utilization level is basically sustainable, the value of the above-mentioned regional water resources sustainable utilization index is 0.6 < WSUI ≤ 0.8; when the regional water resources sustainable utilization level is highly sustainable, the value of the above-mentioned regional water resources sustainable utilization index is 0.8 < WSUI < 1; when the regional water resources sustainable utilization level is completely sustainable, the value of the above-mentioned regional water resources sustainable utilization index is WSUI = 1.

[0111] The evaluation device for regional water resources sustainable utilization includes a processor and a memory. The above-mentioned water resources fairness index calculation module, water resources efficiency index calculation module, water resources security index calculation module, etc. are all stored in the memory as program units, and the corresponding functions are realized by the processor executing the above-mentioned program units stored in the memory; the processor contains a kernel, and the kernel retrieves the corresponding program units from the memory. One or more kernels can be set; the memory may include non-permanent memory in a computer-readable medium, forms such as random access memory (RAM) and non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), and the memory includes at least one storage chip.

[0112] An embodiment of the present invention provides a computer-readable storage medium, on which a program is stored, and when the program is executed by a processor, the above-mentioned method for evaluating regional water resources sustainable utilization is realized.

[0113] An embodiment of the present invention provides a processor, and the above-mentioned processor is used to run a program. Among them, when the above-mentioned program runs, the above-mentioned method for evaluating regional water resources sustainable utilization is executed.

[0114] An embodiment of the present invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements at least the following steps: calculating a water resource security index; constructing a DEA model to calculate a water resource efficiency index; calculating a water resource security index; calculating a water resource sustainable utilization index, and determining the regional water resource sustainable utilization level. The electronic device in the embodiment of the present invention can be a server, a PC, a PAD, a mobile phone, etc. The electronic device may include one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include a program for executing any one of the above regional water resource sustainable utilization evaluation methods. By integrating the water resource fairness index, the water resource efficiency index, and the water resource security index to construct the regional water resource sustainable utilization index, a regional water resource sustainable utilization evaluation method that comprehensively considers the fairness between water and society, the efficiency between water and economy, and the security between water and ecology can be obtained, so as to be able to quantify the regional water resource sustainable utilization level, make the water resource sustainable utilization evaluation more objective, comprehensive, simple and efficient, and thus solve the problems of insufficient comprehensive evaluation dimensions, large subjectivity in the determination process, and insufficient representativeness of indicators in the prior art.

[0115] The present application also provides a computer program product, which is suitable for executing a program initialized with at least the following method steps when executed on a data processing device: calculating a water resource security index; constructing a DEA model to calculate a water resource efficiency index; calculating a water resource security index; calculating a water resource sustainable utilization index, and determining the regional water resource sustainable utilization level.

[0116] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for evaluating sustainable utilization of regional water resources, characterized in that: include: In the water extraction stage, data on the total amount of water resources and the number of permanent residents in the study area are collected, and the Gini coefficient between the total amount of water resources and the number of permanent residents in the study area is calculated. The Gini coefficient is used to represent the water resource equity index WFI; In the water use stage, regional water resources input, labor input, capital input, and economic output data are collected, and the regional water resources efficiency index WEI is calculated using the data envelopment analysis DEA model; In the drainage link, the regional water resource ecological footprint WEF is calculated based on the water quantity ecological footprint and water quality ecological footprint. According to the ratio of the regional water resource ecological footprint WEF and the water resource ecological carrying capacity WEC, the water resource security index WSI calculation formula is constructed, and the water resource security index WSI is used to characterize the water resource utilization security level. Based on the water resources equity index, water resources efficiency index and water resources security index, a calculation formula for the regional water resources sustainable utilization index WSUI is constructed. The water resources sustainable utilization grade is determined according to the value of the water resources sustainable utilization index, and then the water resources sustainable utilization level is determined.

2. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: The calculation formula of water resource equity index is: Where WFI is the water resource equity index; m is the number of sub-regions in the study area, k is the sub-region number, and X k is the cumulative percentage of the total water resources in the kth sub-region, X k-1 is the cumulative percentage of the total water resources in the k-1th sub-region, Y k is the cumulative percentage of the permanent population of the kth sub-region, Y k-1 It is the cumulative percentage of the permanent population in the k-1th sub-region.

3. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: The data envelopment analysis DEA model is used to calculate the regional water resource efficiency index WEI, and the calculation formula is: minθ=θ * Among them, θ is the relative efficiency value of a group of decision-making units DMU, ​​θ * is the optimal solution, recorded as the water resource efficiency index, j is the number of DMUs, a total of n, x j is the input index of the jth DMU, ​​x j0 is the input index of the j0th DMU, ​​y j is the output index of the jth DMU, ​​y j0 is the output index of the j0th DMU, ​​λ j is the weight coefficient of the jth DMU, ​​S - and S + are slack variables. If θ = 1 and S - =S + = 0, then the j0th decision-making unit DMU is called DEA effective. If θ = 1 and S - ≠0 or S + ≠0, the j0th decision-making unit DMU is called weak DEA effective; if θ<1, the j0th decision-making unit DMU is called DEA invalid.

4. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: Regional water resource input is regional water consumption, labor input is the number of employees, capital input is the amount of fixed asset investment, economic output is GDP, and water consumption includes production water consumption, domestic water consumption and ecological water consumption.

5. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: The calculation formula of water resource security index is: WEF=WEF r +WEF q Among them, WEF is the regional water resources ecological footprint; WEF r and WEF q are the regional water quantity ecological footprint and water quality ecological footprint respectively, i=1,2,3 represent the production water account, domestic water account and ecological water account of a province respectively, W i is the water consumption of the ith account, P w is the global average water resource production capacity, γ is the global water resource equilibrium factor, L COD and represent the regional COD and NH3-N emissions, respectively, C COD and are the regional COD and NH3-N emission standards respectively, WSI is the water resources security index, and α is a coefficient, which is determined according to the actual situation of the region. is the water resource production factor, which is calculated by the regional water production modulus and P w The ratio of is obtained, Q is the total amount of regional water resources.

6. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: The calculation formula of water resources sustainable utilization index is: Among them, WSUI is the water resources sustainable utilization index, WFI is the water resources equity index, WEI is the water resources efficiency index, and WSI is the water resources security index.

7. The method for evaluating sustainable utilization of regional water resources according to claim 1, characterized in that: The levels of sustainable use of water resources include: completely unsustainable, highly unsustainable, basically unsustainable, nearly sustainable, basically sustainable, highly sustainable and completely sustainable. The specific range of the levels is as follows: When the level of sustainable utilization of water resources in the region is completely unsustainable, the sustainable utilization index of water resources in the region is: WSUI=0 When the level of sustainable utilization of water resources in the region is highly unsustainable, the sustainable utilization index of water resources in the region is: 0 <WSUI≤0.2 When the level of sustainable utilization of water resources in the region is basically unsustainable, the sustainable utilization index of water resources in the region is: 0.2 <WSUI≤0.4 When the level of sustainable utilization of water resources in the region is close to sustainable, the sustainable utilization index of water resources in the region is: 0.4 <WSUI≤0.6 When the level of sustainable utilization of water resources in the region is basically sustainable, the sustainable utilization index of water resources in the region is: 0.6 <WSUI≤0.8 When the level of sustainable utilization of water resources in the region is highly sustainable, the sustainable utilization index of water resources in the region is: 0.8 <WSUI<1 When the level of sustainable utilization of water resources in the region is completely sustainable, the sustainable utilization index of water resources in the region is: WSUI=1 Among them, WSUI is the water resources sustainable utilization index.

8. A regional water resources sustainable utilization index evaluation system, characterized in that: include: The water resource equity index calculation module is used to collect data on the total amount of water resources and the number of permanent residents in the study area during the water intake process, calculate the Gini coefficient between the total amount of water resources and the number of permanent residents in the study area, and use the Gini coefficient to represent the water resource equity index WFI; The water resource efficiency index calculation module is used to collect regional water resource input, labor input, capital input, and economic output data in the water use process, and calculate the regional water resource efficiency index WEI using the data envelopment analysis DEA model; The water resource security index calculation module is used to calculate the regional water resource ecological footprint WEF according to the water quantity ecological footprint and water quality ecological footprint in the drainage link, and to construct the water resource security index WSI calculation formula according to the ratio of the regional water resource ecological footprint WEF and the water resource ecological carrying capacity WEC. The water resource security index WSI is used to characterize the water resource utilization security level; The water resources sustainable utilization index calculation module is used to construct a regional water resources sustainable utilization index WSUI calculation formula based on the water resources equity index, water resources efficiency index, and water resources security index, and determine the water resources sustainable utilization grade according to the value of the water resources sustainable utilization index, and then determine the water resources sustainable utilization level.

9. An electronic device, characterized in that: comprising a memory and a processor, wherein: A memory for storing computer programs that can be run on the processor; A processor is used to execute the steps of the method for evaluating sustainable utilization of regional water resources as described in any one of claims 1 to 7 when running the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the steps of the method for evaluating sustainable utilization of regional water resources as described in any one of claims 1-7.

Images