Fish migration channel recovery urgency degree sorting method, device and equipment and medium

Abstract

The embodiment of the invention provides a pressing degree sorting method and device for recovering a fish migration channel, equipment and a medium, and relates to the field of water conservancy projects and ecological restoration. The method comprises the following steps: acquiring evaluation index data of a plurality of hydropower projects, and inputting the evaluation index data into a urgency degree sorting analytic hierarchy model to obtain an analysis result of each hydropower project; according to an analysis result, performing priority ranking processing on the plurality of hydropower projects to obtain a priority ranking index of each hydropower project; and sorting the plurality of priority sorting indexes according to a preset priority sorting index grade to obtain a pressing degree sorting result of the plurality of hydropower projects for recovering the fish migration channel. The method is used for achieving the technical effect of improving the accuracy and reliability of the fish migration channel recovery work arrangement priority.

Description

Technical Field

[0001] The present application relates to the fields of water conservancy engineering and ecological restoration, and in particular to a method, device, equipment and medium for ranking the urgency of restoring fish migration channels. Background Art

[0002] The construction of hydropower projects has led to the loss of the longitudinal connectivity of rivers, changing the connectivity between upstream and downstream rivers from bidirectional to limited unidirectional, blocking fish migration channels, and thus affecting the exchange of fish populations upstream and downstream of the project, leading to the loss of genetic diversity of fish populations and the degradation of the quality of economic fish. Therefore, it is necessary to mitigate the impact of project construction on aquatic ecology by restoring fish migration channels.

[0003] Currently, in the existing hydropower projects, the layout methods for restoring fish migration channels include layout at the basin scale, which mainly involves the formulation of river fish survey and evaluation methods, layout scope, and emphasizes the priority ranking method of restoration projects.

[0004] However, there is currently a lack of a more scientific and systematic layout method for determining the priorities for restoring fish migration corridors, which to some extent reduces the accuracy and reliability of the priority ranking of fish migration corridor restoration work. Summary of the invention

[0005] The embodiments of the present application provide a method, device, equipment and medium for ranking the urgency of restoring fish migration channels, so as to achieve the technical effect of improving the accuracy and reliability of arranging the priorities for restoring fish migration channels.

[0006] In a first aspect, an embodiment of the present application provides a method for ranking the urgency of restoring fish migration channels, comprising:

[0007] Acquire evaluation index data of multiple hydropower projects, and input the evaluation index data into an urgency ranking hierarchical analysis model to obtain analysis results for each hydropower project, wherein the analysis results are used to indicate the index scores corresponding to the multiple evaluation indicators. The urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on key factors and evaluation indicators of the urgency of restoring fish migration channels of multiple hydropower projects;

[0008] According to the analysis results, multiple hydropower projects are prioritized to obtain the priority ranking index of each hydropower project;

[0009] Multiple priority indexes are sorted according to preset priority index levels to obtain the urgency ranking results of restoring fish migration channels for multiple hydropower projects.

[0010] In a possible implementation, a plurality of hydropower projects are prioritized according to the analysis results to obtain a priority ranking index for each hydropower project, including:

[0011] The information entropy principle is used to calculate the analysis results and obtain the weight of each evaluation index;

[0012] According to the analysis results and weights, multiple hydropower projects are prioritized to obtain the priority index of each hydropower project.

[0013] In a possible implementation, the information entropy principle is used to calculate the analysis results to obtain the weight of each evaluation index, including:

[0014] The information entropy principle is used to calculate the analysis results and obtain the entropy value of each evaluation index;

[0015] The difference coefficient of each evaluation index is calculated according to the entropy value, and the difference coefficient is calculated to obtain the weight of each evaluation index.

[0016] In a possible implementation, the information entropy principle is used to calculate the analysis results to obtain the entropy value of each evaluation index, including:

[0017] A scoring matrix is ​​established based on the analysis results, and the scoring matrix is ​​standardized to obtain a target matrix;

[0018] The specific gravity value of each evaluation index is calculated according to the target matrix, and the entropy value of each evaluation index is obtained by calculating the specific gravity value.

[0019] In a possible implementation, before obtaining the evaluation index data of the plurality of hydropower projects, the method further includes:

[0020] Obtain fish resource status and engineering characteristics data for multiple hydropower projects, and determine key factors and evaluation indicators corresponding to the urgency of restoring fish migration channels based on the fish resource status and engineering characteristics data;

[0021] Establish an urgency ranking index system based on key factors and evaluation indicators;

[0022] According to the urgency ranking index system, an urgency ranking hierarchical analysis model is established, multiple evaluation indicators in the urgency ranking hierarchical analysis model are divided into different indicator intervals, and the scoring levels of different indicator intervals are determined.

[0023] In a possible implementation, an urgency ranking hierarchical analysis model is established according to the urgency ranking index system, multiple evaluation indicators in the urgency ranking hierarchical analysis model are divided into different indicator intervals, and scoring levels of different indicator intervals are determined, including:

[0024] Perform hierarchical analysis on the urgency ranking index system to obtain hierarchical analysis results;

[0025] According to the results of hierarchical analysis, an urgency ranking hierarchical analysis model is established, and the target layer, criterion layer and indicator layer in the urgency ranking hierarchical analysis model are determined, wherein the target layer includes the urgency ranking of restoring fish migration channels, the criterion layer includes key factors, and the indicator layer includes evaluation indicators;

[0026] Each evaluation indicator in the indicator layer is divided into indicator intervals to obtain multiple indicator intervals, and each indicator interval is divided into scoring levels to obtain a scoring level for each indicator interval.

[0027] In a possible implementation, the evaluation index data is input into the urgency ranking hierarchical analysis model to obtain the analysis results of each hydropower project, including:

[0028] Input the evaluation index data into the urgency ranking hierarchical analysis model, and compare the evaluation index data with the index interval to determine the target index interval corresponding to the evaluation index data;

[0029] According to the target index range, the target scoring level of each evaluation index data is obtained, and according to the target scoring level, the analysis result of each hydropower project is obtained.

[0030] In a second aspect, an embodiment of the present application provides an urgency ranking device for restoring a fish migration channel, comprising:

[0031] An analysis module is used to obtain evaluation index data of multiple hydropower projects, and input the evaluation index data into an urgency ranking hierarchical analysis model to obtain analysis results for each hydropower project, wherein the analysis results are used to indicate the index scores corresponding to the multiple evaluation indicators, and the urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on key factors and evaluation indicators of the urgency of restoring fish migration channels of multiple hydropower projects;

[0032] A processing module is used to prioritize the multiple hydropower projects according to the analysis results to obtain a priority ranking index for each hydropower project;

[0033] The sorting module is used to sort multiple priority indexes according to preset priority index levels to obtain urgency sorting results for restoring fish migration channels for multiple hydropower projects.

[0034] In a possible implementation, the analysis module is further used for:

[0035] Obtain fish resource status and engineering characteristics data for multiple hydropower projects, and determine key factors and evaluation indicators corresponding to the urgency of restoring fish migration channels based on the fish resource status and engineering characteristics data;

[0036] Establish an urgency ranking index system based on key factors and evaluation indicators;

[0037] According to the urgency ranking index system, an urgency ranking hierarchical analysis model is established, multiple evaluation indicators in the urgency ranking hierarchical analysis model are divided into different indicator intervals, and the scoring levels of different indicator intervals are determined.

[0038] In a possible implementation, the analysis module is further used for:

[0039] Perform hierarchical analysis on the urgency ranking index system to obtain hierarchical analysis results;

[0040] According to the results of hierarchical analysis, an urgency ranking hierarchical analysis model is established, and the target layer, criterion layer and indicator layer in the urgency ranking hierarchical analysis model are determined, wherein the target layer includes the urgency ranking of restoring fish migration channels, the criterion layer includes key factors, and the indicator layer includes evaluation indicators;

[0041] Each evaluation indicator in the indicator layer is divided into indicator intervals to obtain multiple indicator intervals, and each indicator interval is divided into scoring levels to obtain a scoring level for each indicator interval.

[0042] In a possible implementation, the analysis module is further used for:

[0043] Input the evaluation index data into the urgency ranking hierarchical analysis model, and compare the evaluation index data with the index interval to determine the target index interval corresponding to the evaluation index data;

[0044] According to the target index range, the target scoring level of each evaluation index data is obtained, and according to the target scoring level, the analysis result of each hydropower project is obtained.

[0045] In a possible implementation manner, the processing module is further configured to:

[0046] The information entropy principle is used to calculate the analysis results and obtain the weight of each evaluation index;

[0047] According to the analysis results and weights, multiple hydropower projects are prioritized to obtain the priority index of each hydropower project.

[0048] In a possible implementation manner, the processing module is further configured to:

[0049] The information entropy principle is used to calculate the analysis results and obtain the entropy value of each evaluation index;

[0050] The difference coefficient of each evaluation index is calculated according to the entropy value, and the difference coefficient is calculated to obtain the weight of each evaluation index.

[0051] In a possible implementation manner, the processing module is further configured to:

[0052] A scoring matrix is ​​established based on the analysis results, and the scoring matrix is ​​standardized to obtain a target matrix;

[0053] The specific gravity value of each evaluation index is calculated according to the target matrix, and the entropy value of each evaluation index is obtained by calculating the specific gravity value.

[0054] In a third aspect, an embodiment of the present application provides an urgency ranking device for restoring fish migration channels, comprising: a memory, a processor;

[0055] The memory stores computer-executable instructions;

[0056] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0057] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementations of the first aspect.

[0058] The urgency ranking method, device, equipment and medium for restoring fish migration channels provided in the embodiments of the present application obtain analysis results for each hydropower project by inputting evaluation index data of multiple hydropower projects into an urgency ranking hierarchical analysis model; these analysis results are processed to obtain a priority ranking index for each hydropower project, and then the multiple priority ranking indexes are ranked according to pre-set priority ranking index levels to obtain urgency ranking results for multiple hydropower projects in restoring fish migration channels, thereby achieving the effect of improving the accuracy and reliability of arranging priorities for fish migration channel restoration work. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0060] Figure 1 A schematic diagram of a process for ranking the urgency of restoring fish migration channels provided in an embodiment of the present application Figure 1 ;

[0061] Figure 2A schematic diagram of a process for ranking the urgency of restoring fish migration channels provided in an embodiment of the present application Figure 2 ;

[0062] Figure 3 A schematic diagram of the structure of an urgency ranking hierarchical analysis model provided in an embodiment of the present application;

[0063] Figure 4 A schematic diagram of an engineering location provided in an embodiment of the present application;

[0064] Figure 5 A schematic diagram of an urgency ranking result provided in an embodiment of the present application;

[0065] Figure 6 A schematic diagram of the structure of an urgency ranking device for restoring fish migration channels provided in an embodiment of the present application;

[0066] Figure 7 A schematic structural diagram of an urgency ranking device for restoring fish migration channels provided in an embodiment of the present application.

[0067] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0068] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0069] In the existing technology, fish migration channels are restored by adopting layout at the watershed scale in existing hydropower projects, which involves river fish surveys, formulation of evaluation methods, and layout scope, but lacks a more scientific and systematic layout method for determining the priority of restoring fish migration channels, which in turn leads to reduced accuracy and reliability in the priority arrangement of fish migration channel restoration work.

[0070] The urgency ranking method for restoring fish migration channels provided in the present application uses the analytic hierarchy process to construct an urgency ranking analytic hierarchy model, and inputs the evaluation index data of multiple hydropower projects into the model to obtain the analysis results of each hydropower project, and then uses the information entropy principle to calculate the analysis results to obtain the priority ranking index of each hydropower project, and sorts the multiple priority ranking indexes according to the preset priority ranking index level to obtain the urgency ranking results of restoring fish migration channels for multiple hydropower projects. The above method can systematically and scientifically compare the urgency of different hydropower projects for the restoration of fish migration channels, and solves the technical problems of low accuracy and low reliability in the prior art in arranging the priority of fish migration channel restoration work.

[0071] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] Figure 1 A schematic diagram of a process for ranking the urgency of restoring fish migration channels provided in an embodiment of the present application Figure 1 ,like Figure 1 As shown, the method includes:

[0073] S101, obtaining evaluation index data of multiple hydropower projects, and inputting the evaluation index data into an urgency ranking hierarchical analysis model to obtain analysis results for each hydropower project.

[0074] In this embodiment, the evaluation index data of multiple hydropower projects are obtained. These evaluation indicators include, but are not limited to, the distribution of fish species downstream of the hydropower project, migratory fish species, rare protected fish species, the distribution of fish habitats upstream, the height of the project dam, the year of completion of the project, the flow of the river, the installed capacity of the power station, and the average power generation over many years. The large amount of specific evaluation index data collected is input into the constructed urgency ranking hierarchical analysis model. The urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on the key factors and evaluation indicators of the urgency of restoring the fish migration channels of multiple hydropower projects. After the evaluation index data is input, the urgency ranking hierarchical analysis model will generate the analysis results corresponding to each hydropower project according to the rules set internally. These analysis results are presented in the form of data, charts or other forms to indicate the index scores corresponding to multiple evaluation indicators.

[0075] It should be noted that since fish migration is a large-scale biological migration activity, the migration distances of various fish species vary greatly, ranging from local migration between rivers and lakes or between main and tributary rivers to long-distance migration from the estuary to the upstream river source, but all these migration phenomena occur within the basin. Therefore, the formulation of strategies for restoring migratory fish passages should be carried out within the basin, that is, multiple hydropower projects should belong to one basin.

[0076] S102. Prioritize the multiple hydropower projects according to the analysis results to obtain a priority index for each hydropower project.

[0077] In this embodiment, based on the analysis results of each hydropower project obtained through the urgency ranking hierarchical analysis model, the analysis results of multiple hydropower projects are calculated and processed respectively, that is, priority ranking processing is performed to obtain the priority ranking index of each hydropower project. The priority ranking index reflects the relative priority position of the hydropower project in the whole, and the higher the index, the higher its priority. This can more intuitively and quantitatively reflect the relative importance and priority order of each hydropower project in the whole.

[0078] S103. Sort the plurality of priority indexes according to preset priority index levels to obtain urgency ranking results for restoring fish migration channels of the plurality of hydropower projects.

[0079] In this embodiment, the priority indexes of multiple hydropower projects are arranged in order from high to low or from low to high according to the preset priority index levels, and the urgency ranking results of restoring fish migration channels for multiple hydropower projects are obtained. The ranking results reflect the urgency of each hydropower project in restoring fish migration channels. For hydropower projects with high priority indexes, the urgency of restoring fish migration channels is higher, and relevant measures need to be considered and implemented earlier and more focused to promote the restoration of fish migration channels. Through such operations, the order and priority of the work of each hydropower project in this regard can be clarified, providing a scientific basis for the systematic layout of fish migration channels at the basin level, and ensuring the optimization of the ecological benefits of the restoration project.

[0080] The urgency ranking method for restoring fish migration channels provided in the embodiment of the present application obtains the evaluation index data of multiple hydropower projects into the urgency ranking hierarchical analysis model to obtain the analysis results of each hydropower project; the analysis results are processed to obtain the priority ranking index of each hydropower project, and the multiple priority ranking indexes are ranked according to the preset priority ranking index level to obtain the urgency ranking results of restoring fish migration channels for multiple hydropower projects. Therefore, the urgency ranking method provides a scientific and systematic basis and an effective way for the priority of restoring fish migration channels for built hydropower projects, and improves the accuracy and reliability of arranging the priority of fish migration channel restoration work.

[0081] Figure 2 A schematic diagram of a process for ranking the urgency of restoring fish migration channels provided in an embodiment of the present application Figure 2 In this embodiment, Figure 1 Based on the embodiment, a possible implementation method of the urgency ranking method for restoring fish migration channels is described in detail, such as Figure 2 As shown, the method includes:

[0082] S201. Obtain fish resource status and engineering characteristic data of multiple hydropower projects, and determine key factors and evaluation indicators corresponding to the urgency of restoring fish migration channels based on the fish resource status and engineering characteristic data.

[0083] In this embodiment, fish resource status and engineering characteristic data of multiple hydropower projects are obtained, and the obtained fish resource status and engineering characteristic data are analyzed to obtain key factors and evaluation indicators corresponding to the urgency of restoring fish migration channels.

[0084] Among them, key factors include but are not limited to the degree of obstruction of the project to fish migration, the technical effectiveness of restoring the migratory channel and the role of the project in the social economy; evaluation indicators include but are not limited to fish species, population size and distribution, migratory fish species and characteristics, project dam height, project completion years, river flow, power station installed capacity, and average power generation over many years.

[0085] S202. Establish an urgency ranking index system based on key factors and evaluation indicators, perform hierarchical analysis on the urgency ranking index system, and obtain hierarchical analysis results.

[0086] In this embodiment, the urgency ranking index system includes the above-mentioned key factors and evaluation indicators, which are used to measure and compare the urgency of various related factors. The urgency ranking index system is subjected to hierarchical analysis. For example, the degree of obstruction of the project to fish migration, the technical effectiveness of restoring the migration channel, and the role of the project in the social economy are taken as key factors, and specific evaluation indicators such as fish species, population size and distribution, migratory fish species and characteristics, project dam height, project completion years, river flow, power station installed capacity, and multi-year average power generation are subdivided to obtain hierarchical analysis results.

[0087] S203. According to the hierarchical analysis results, a hierarchical analysis model for urgency ranking is established, and the target layer, criterion layer and indicator layer in the hierarchical analysis model for urgency ranking are determined.

[0088] In this embodiment, the urgency ranking hierarchical analysis model includes a target layer, a criterion layer and an indicator layer, wherein the target layer includes the urgency ranking of restoring the fish migration channel, the criterion layer includes key factors, and the indicator layer includes evaluation indicators. The target layer (the urgency ranking of restoring the fish migration channel) is placed on the top layer, the criterion layer is used as the middle layer, and the indicator layer is used as the bottom layer.

[0089] In one possible implementation, Figure 3 The schematic diagram of the structure of a hierarchical analysis model of urgency ranking provided in the embodiment of the present application includes a target layer, a criterion layer and an indicator layer. Figure 3 As shown in the figure, the urgency of restoring the fish migration channel is used as the target layer; the degree of obstruction of the project to fish migration, the technical effectiveness of restoring the migration channel and the role of the project in the social economy are used as the criterion layer; the species of migratory fish and rare protected species corresponding to the degree of obstruction of the project to fish migration are used as the indicator layer, the dam height and project years corresponding to the technical effectiveness of restoring the migration channel are used as the indicator layer, and the installed capacity and average power generation over many years corresponding to the role of the project in the social economy are used as the indicator layer.

[0090] The above-mentioned urgency ranking hierarchical analysis model can also be converted into a table form. Table 1 is a schematic table of the urgency ranking hierarchical analysis model shown in this embodiment. As shown in Table 1, the urgency ranking hierarchical analysis model includes a target layer, a criterion layer and an indicator layer. The target layer includes: the urgency ranking of restoring the fish migration channel; the criterion layer includes: the degree of obstruction of the project to fish migration, the technical effectiveness of restoring the migration channel, and the role of the project in the social economy; the indicator layer includes: the species of migratory fish, rare protected species, dam height, project life, installed capacity, and average power generation over many years.

[0091] Table 1

[0092]

[0093] S204, dividing each evaluation indicator in the indicator layer into indicator intervals to obtain a plurality of indicator intervals, and dividing each indicator interval into scoring levels to obtain a scoring level for each indicator interval.

[0094] In this embodiment, the qualitative evaluation indicators are clearly divided into indicator intervals and scoring levels, so that the evaluation process has a clear basis and criteria, and interval division and scoring are performed through unified standards and methods, which enhances the objectivity and reliability of the evaluation.

[0095] In a possible implementation manner, Table 2 is a schematic table of scoring levels corresponding to different indicator intervals shown in this embodiment. Figure 3 On the basis of the embodiment, the multiple evaluation indicators in the indicator layer in the urgency ranking hierarchical analysis model are divided into different indicator intervals, and the scoring levels of the different indicator intervals are determined.

[0096] Table 2

[0097]

[0098] As shown in Table 2: For example, each evaluation indicator in the indicator layer can be divided into 5 different indicator intervals, each indicator interval corresponds to a scoring level, the scoring level is 1 to 5 points, and the interval interval is 1 point.

[0099] S205, obtaining evaluation index data of multiple hydropower projects, inputting the evaluation index data into the urgency ranking hierarchical analysis model, and comparing the evaluation index data with the index interval to determine the target index interval corresponding to the evaluation index data.

[0100] In this embodiment, the evaluation index data of multiple hydropower projects are obtained, including but not limited to specific values ​​of fish species, population size and distribution, migratory fish species and characteristics, project dam height, project completion years, river flow, power station installed capacity, multi-year average power generation, etc. These evaluation index data are input into the urgency ranking hierarchical analysis model, and the input evaluation index data are compared with the previously divided index intervals one by one. Through comparison, it is determined that each evaluation index data is in a specific target index interval.

[0101] S206. According to the target indicator range, the target scoring level of each evaluation indicator data is obtained, and according to the target scoring level, the analysis result of each hydropower project is obtained.

[0102] In this embodiment, each target indicator interval corresponds to a scoring level, and the target scoring level of each evaluation indicator data is determined according to the scoring level. Based on the target scoring level, the analysis result of each hydropower project is obtained, and the analysis result is used to indicate the indicator scores corresponding to multiple evaluation indicators.

[0103] S207: Establish a scoring matrix based on the analysis results, and standardize the scoring matrix to obtain a target matrix.

[0104] In this embodiment, the numerical values ​​corresponding to the analysis results are converted into a matrix to obtain a scoring matrix:

[0105] X=(x ij ) m×n (1)

[0106] In the formula, x ij Represents the index score; m is the number of hydropower projects, and n is the number of evaluation indicators.

[0107] The evaluation matrix is ​​dimensionless using the standardization method:

[0108]

[0109] y ij =k+x i ' j (i=1,2,…,m; j=1,2…,n) (3)

[0110] In the formula, x i ' j is the dimensionless index score, is the average value of the jth evaluation index, s j is the standard deviation of the j-th evaluation index, and k is the coordinate translation amplitude, which can eliminate the negative value caused by the standard deviation.

[0111] The final target matrix is:

[0112] Y=(y ij ) m×n (4)

[0113] In the formula, y ij Represents the index score after standardization.

[0114] S208. Calculate the specific gravity value of each evaluation index according to the target matrix, and calculate the specific gravity value to obtain the entropy value of each evaluation index.

[0115] In this embodiment, the index score of each evaluation index in the target matrix is ​​calculated to obtain the weight value p of each evaluation index. ij :

[0116]

[0117] Calculate the specific gravity value and get the entropy value e of the jth evaluation index j :

[0118]

[0119] In the formula, R is the adjustment coefficient, So 0≤e j ≤1.

[0120] According to the above entropy calculation formula, the entropy value of each evaluation index is obtained.

[0121] S209: Calculate the difference coefficient of each evaluation indicator according to the entropy value, and calculate the difference coefficient to obtain the weight of each evaluation indicator.

[0122] In this embodiment, according to the entropy value e of the jth evaluation index j , calculate the difference coefficient g of the jth evaluation index j :

[0123] g j =1-e j (7)

[0124] When j The larger the value, the greater the importance of the evaluation indicator in the comprehensive evaluation.

[0125] Calculate the difference coefficient of the j-th evaluation index and get the weight w of the j-th evaluation index j :

[0126]

[0127] According to the above calculation formula of difference coefficient and weight, the difference coefficient and weight of each evaluation index can be obtained.

[0128] S210. Prioritize the multiple hydropower projects according to the analysis results and weights to obtain a priority index for each hydropower project.

[0129] In this embodiment, the analysis results and weights are calculated to obtain the priority ranking index of each hydropower project, so as to implement the priority ranking process for multiple hydropower projects:

[0130]

[0131] Where PI is the priority index, w j is the evaluation index weight, x j is the index score, and n is the number of evaluation indicators.

[0132] S211. Sort multiple priority indexes according to preset priority index levels to obtain urgency ranking results for restoring fish migration channels for multiple hydropower projects.

[0133] Step S211 is similar to the above step S103 and will not be described again.

[0134] The urgency ranking method for restoring fish migration channels provided in the embodiment of the present application establishes an urgency ranking index system according to the key factors and evaluation indicators corresponding to the urgency of restoring fish migration channels, and performs hierarchical analysis to obtain the results, constructs an urgency ranking hierarchical analysis model to determine each level, divides the evaluation indicators into intervals and determines the scoring levels; obtains the engineering evaluation index data input into the model, compares and determines the target interval to obtain the analysis result, establishes the target matrix based on the analysis result, and uses the information entropy principle to calculate the weight of each evaluation indicator, and then prioritizes the hydropower projects according to the weight and the analysis result to obtain the urgency ranking result. Therefore, by constructing an urgency ranking index system for restoring the fish migration channel of a hydropower project, drawing on the multi-criteria decision-making method, and proposing an urgency ranking method for restoring the fish migration channel based on the hierarchical analysis method and the information entropy principle, the urgency of restoring the fish migration channel for different hydropower projects is systematically and scientifically compared, so that the decision is more based on evidence, thereby improving the accuracy and reliability of the priority of the restoration of the fish migration channel.

[0135] Preferably, a method for ranking the urgency of restoring fish migration channels is provided based on the implementation of four hydropower projects A, B, C, and D that have been built in a certain basin. Figure 2 Based on the embodiment, the urgency ranking method for restoring fish migration channels is used to obtain the urgency ranking results of the four hydropower projects A, B, C, and D. The specific process is as follows:

[0136] Get four hydropower projects A, B, C, and D. Figure 4 A schematic diagram of an engineering location provided in an embodiment of the present application, such as Figure 4 As shown, A, B, C, and D are four hydropower projects located from upstream to downstream of a river, respectively. Project B is located downstream of Project A, Project C is located downstream of Project B, and Project D is located downstream of Project C.

[0137] For the four hydropower projects A, B, C, and D, the evaluation indicators corresponding to the four hydropower projects are obtained, including migratory fish species, rare protected species, dam height, project construction years, project installed capacity, and multi-year average power generation. Table 3 is a schematic table of the evaluation indicator data corresponding to the four hydropower projects A, B, C, and D shown in this embodiment.

[0138] Table 3

[0139] Evaluation indicators Indicator Unit A B C D Migratory fish species E1 kind 12 12 15 15 Rare and protected species E2 kind 5 5 6 6 Dam height E3 m 285.5 162 181 47 Construction period E4 Year 9 10 21 36 Project installed capacity E5 10,000 kW 1386 775 2250 271.5 Multi-year average power generation E6 100 million kW·h 571.2 307.47 787.9 140

[0140] As shown in Table 3: For example, the evaluation index data corresponding to the four hydropower projects A, B, C, and D can be input into the urgency ranking hierarchical analysis model, and the evaluation index data can be compared with the index interval (Table 2 above), and the target index interval corresponding to the evaluation index data can be determined. According to the target index interval, the target scoring level of each evaluation index data can be obtained, and according to the target scoring level, the analysis results of each hydropower project can be obtained. Table 4 is a schematic table of the corresponding analysis results of the four hydropower projects A, B, C, and D shown in this embodiment.

[0141] Table 4

[0142]

[0143] As shown in Table 4: the analysis results of each hydropower project are used to indicate the index scores corresponding to multiple evaluation indicators. Taking Hydropower Project A as an example, the index score corresponding to the evaluation indicator migratory fish species E1 is 3; the index score corresponding to the evaluation indicator rare protected species E2 is 2; the index score corresponding to the evaluation indicator dam height E3 is 1; the index score corresponding to the rating indicator project construction years E4 is 4; the index score corresponding to the evaluation indicator project installed capacity E5 is 2; the index score corresponding to the rating indicator multi-year average power generation E6 is 1.

[0144] The above analysis results are converted into a scoring matrix, and the scoring matrix is ​​standardized to obtain a target matrix. Table 5 is a schematic diagram of the target matrix shown in this embodiment.

[0145] Table 5

[0146]

[0147] According to formula (1) to formula (8), the entropy value e of each evaluation index is calculated: j and weight w j Table 6 is a schematic table of the entropy value and weight of each evaluation index shown in this embodiment.

[0148] Table 6

[0149] Evaluation indicators E1 E2 E3 E4 E5 E6 Entropy value ej 0.77 0.77 0.79 0.76 0.76 0.79 Weight wj 0.17 0.17 0.15 0.18 0.18 0.16

[0150] According to the analysis results in Table 4 and the weight values ​​in Table 6, the priority ranking index of each hydropower project is calculated using formula (9), and the PI is obtained. A =2.21,PI B =2.52,PI C =2.17,PI D =3.30.

[0151] Rank the priority ranking indices of four hydropower projects A, B, C, and D according to the preset priority ranking index levels to obtain the urgency ranking result, that is, Project D > Project B > Project A > Project C.

[0152] Figure 5 This is a schematic diagram of an urgency ranking result provided by an embodiment of the present application. As Figure 5 shown, the urgency levels of Projects A, B, and C are all high, and the urgency level of Project D is relatively high. Among them, the preset priority ranking index levels are: when PI < 1, the urgency level is low; when 1 ≤ PI < 2, the urgency level is medium; when 2 ≤ PI < 3, the urgency level is high; when 3 ≤ PI < 4, the urgency level is relatively high; when 4 < PI, the urgency level is the highest.

[0153] Figure 6 This is a schematic structural diagram of an urgency ranking device for restoring fish migration channels provided by an embodiment of the present application. As Figure 6 shown, the urgency ranking device 60 for restoring fish migration channels provided in this embodiment includes:

[0154] An analysis module 601, configured to obtain evaluation index data of multiple hydropower projects, and input the evaluation index data into an urgency ranking hierarchical analysis model to obtain an analysis result for each hydropower project. The analysis result is used to indicate the index scores corresponding to multiple evaluation indexes. The urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on the key factors and evaluation indexes of the fish migration channel restoration urgency of multiple hydropower projects;

[0155] A processing module 602, configured to perform priority ranking processing on multiple hydropower projects according to the analysis result to obtain a priority ranking index for each hydropower project;

[0156] A ranking module 603, configured to rank multiple priority ranking indexes according to the preset priority ranking index levels to obtain the urgency ranking result of restoring fish migration channels for multiple hydropower projects.

[0157] In a possible implementation manner, the analysis module 601 is further configured to:

[0158] Obtain the fish resource status and project characteristic data of multiple hydropower projects, and determine the key factors and evaluation indexes corresponding to the fish migration channel restoration urgency according to the fish resource status and project characteristic data;

[0159] Establish an urgency ranking index system according to the key factors and evaluation indexes;

[0160] Establish an urgency ranking hierarchical analysis model according to the urgency ranking index system, divide multiple evaluation indexes in the urgency ranking hierarchical analysis model into different index intervals, and determine the scoring levels of different index intervals.

[0161] In a possible implementation, the analysis module 601 is further configured to:

[0162] Perform hierarchical analysis on the urgency ranking index system to obtain hierarchical analysis results;

[0163] According to the results of hierarchical analysis, an urgency ranking hierarchical analysis model is established, and the target layer, criterion layer and indicator layer in the urgency ranking hierarchical analysis model are determined, wherein the target layer includes the urgency ranking of restoring fish migration channels, the criterion layer includes key factors, and the indicator layer includes evaluation indicators;

[0164] Each evaluation indicator in the indicator layer is divided into indicator intervals to obtain multiple indicator intervals, and each indicator interval is divided into scoring levels to obtain a scoring level for each indicator interval.

[0165] In a possible implementation, the analysis module 601 is further configured to:

[0166] Input the evaluation index data into the urgency ranking hierarchical analysis model, and compare the evaluation index data with the index interval to determine the target index interval corresponding to the evaluation index data;

[0167] According to the target index range, the target scoring level of each evaluation index data is obtained, and according to the target scoring level, the analysis result of each hydropower project is obtained.

[0168] In a possible implementation, the processing module 602 is further configured to:

[0169] The information entropy principle is used to calculate the analysis results and obtain the weight of each evaluation index;

[0170] According to the analysis results and weights, multiple hydropower projects are prioritized to obtain the priority index of each hydropower project.

[0171] In a possible implementation, the processing module 602 is further configured to:

[0172] The information entropy principle is used to calculate the analysis results and obtain the entropy value of each evaluation index;

[0173] The difference coefficient of each evaluation index is calculated according to the entropy value, and the difference coefficient is calculated to obtain the weight of each evaluation index.

[0174] In a possible implementation, the processing module 602 is further configured to:

[0175] A scoring matrix is ​​established based on the analysis results, and the scoring matrix is ​​standardized to obtain a target matrix;

[0176] The specific gravity value of each evaluation index is calculated according to the target matrix, and the entropy value of each evaluation index is obtained by calculating the specific gravity value.

[0177] The urgency ranking device for restoring fish migration channels provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and this embodiment will not be described in detail here.

[0178] Figure 7 A schematic diagram of the structure of an urgency ranking device for restoring fish migration channels provided in an embodiment of the present application. Figure 7 As shown, the urgency ranking device 70 for restoring fish migration channels provided in this embodiment includes: at least one processor 701 and a memory 702. Optionally, the device 70 also includes a communication component 703. The processor 701, the memory 702 and the communication component 703 are connected via a bus 704.

[0179] In a specific implementation process, at least one processor 701 executes the computer-executable instructions stored in the memory 702, so that at least one processor 701 executes the above method.

[0180] The specific implementation process of the processor 701 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0181] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the invention may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0182] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk storage.

[0183] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0184] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0185] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0186] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0187] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0188] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0189] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0190] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0191] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware corresponding to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0192] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0193] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for ranking the urgency of restoring fish migration channels, characterized in that: include: Acquire evaluation index data of multiple hydropower projects, and input the evaluation index data into an urgency ranking hierarchical analysis model to obtain analysis results for each hydropower project, wherein the analysis results are used to indicate index scores corresponding to multiple evaluation indicators, and the urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on key factors and evaluation indicators of urgency for restoration of fish migration channels of the multiple hydropower projects; According to the analysis results, the plurality of hydropower projects are prioritized to obtain a priority ranking index for each hydropower project; The plurality of priority indexes are sorted according to preset priority index levels to obtain urgency ranking results for restoring fish migration channels for the plurality of hydropower projects.

2. The method according to claim 1, characterized in that The step of performing priority sorting on the plurality of hydropower projects according to the analysis results to obtain a priority sorting index for each hydropower project includes: The analysis results are calculated using the information entropy principle to obtain the weight of each evaluation index; The plurality of hydropower projects are prioritized according to the analysis results and the weights to obtain a priority index for each hydropower project.

3. The method according to claim 2, characterized in that The information entropy principle is used to calculate the analysis results to obtain the weight of each evaluation index, including: Calculating the analysis results using the information entropy principle to obtain the entropy value of each evaluation indicator; The difference coefficient of each evaluation indicator is calculated according to the entropy value, and the difference coefficient is calculated to obtain the weight of each evaluation indicator.

4. The method according to claim 3, characterized in that The step of calculating the analysis result using the information entropy principle to obtain the entropy value of each evaluation index includes: Establishing a scoring matrix according to the analysis results, and performing standardization processing on the scoring matrix to obtain a target matrix; The weight value of each evaluation index is calculated according to the target matrix, and the weight value is calculated to obtain the entropy value of each evaluation index.

5. The method according to claim 1, characterized in that Before obtaining the evaluation index data of the plurality of hydropower projects, the method further comprises: Obtaining fish resource status and engineering characteristic data of multiple hydropower projects, and determining key factors and evaluation indicators corresponding to the urgency of restoring the fish migration channels based on the fish resource status and engineering characteristic data; Establishing the urgency ranking index system according to the key factors and evaluation indicators; The urgency ranking hierarchical analysis model is established according to the urgency ranking index system, a plurality of evaluation indicators in the urgency ranking hierarchical analysis model are divided into different indicator intervals, and the scoring levels of the different indicator intervals are determined.

6. The method according to claim 5, characterized in that The step of establishing the urgency ranking hierarchical analysis model according to the urgency ranking index system, dividing the multiple evaluation indicators in the urgency ranking hierarchical analysis model into different indicator intervals, and determining the scoring levels of the different indicator intervals includes: Performing hierarchical analysis on the urgency ranking index system to obtain a hierarchical analysis result; According to the hierarchical analysis results, the urgency ranking hierarchical analysis model is established, and the target layer, criterion layer and indicator layer in the urgency ranking hierarchical analysis model are determined, wherein the target layer includes the urgency ranking of restoring the fish migration channel, the criterion layer includes key factors, and the indicator layer includes evaluation indicators; Each evaluation indicator in the indicator layer is divided into indicator intervals to obtain a plurality of indicator intervals, and each indicator interval is divided into scoring levels to obtain a scoring level for each indicator interval.

7. The method according to claim 6, characterized in that The evaluation index data is input into the urgency ranking hierarchical analysis model to obtain the analysis results of each hydropower project, including: Inputting the evaluation index data into the urgency ranking hierarchical analysis model, and comparing the evaluation index data with the index interval to determine the target index interval corresponding to the evaluation index data; According to the target index interval, the target scoring level of each evaluation index data is obtained, and according to the target scoring level, the analysis result of each hydropower project is obtained.

8. An urgency ranking device for restoring fish migration channels, characterized in that: The device comprises: An analysis module is used to obtain evaluation index data of multiple hydropower projects, and input the evaluation index data into an urgency ranking hierarchical analysis model to obtain analysis results for each hydropower project, wherein the analysis results are used to indicate index scores corresponding to multiple evaluation indicators, and the urgency ranking hierarchical analysis model is obtained by performing hierarchical analysis on key factors and evaluation indicators of urgency for restoration of fish migration channels of the multiple hydropower projects; A processing module, configured to perform priority sorting processing on the plurality of hydropower projects according to the analysis result, so as to obtain a priority sorting index of each hydropower project; The sorting module is used to sort the multiple priority indexes according to the preset priority index levels to obtain the urgency sorting results of restoring the fish migration channels of the multiple hydropower projects.

9. An urgency ranking device for restoring fish migration channels, characterized in that: The device comprises: a memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the urgency ranking method for restoring fish migration channels as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the urgency ranking method for restoring fish migration channels as described in any one of claims 1-7.

Images