A method, device and system for evaluating carbon sequestration benefits of restoring a mine ecosystem

Abstract

The present invention provides a method, device and system for evaluating the carbon sequestration benefit of a restored mine ecosystem. The method comprises: combining the field survey results of the mine ecological restoration area, obtaining relevant data of the mine restoration area based on the ecological restoration status of the mine ecological restoration area; combining the evaluation objectives, determining the evaluation indicators corresponding to different evaluation levels in the mine restoration area ecological benefit evaluation system; combining the collected data, clarifying the corresponding weight values ​​of the indicators corresponding to different evaluation levels in the mine restoration area ecosystem carbon sequestration benefit evaluation system; combining the membership of each evaluation indicator and the weight value corresponding to each evaluation indicator to perform weighted summation, and obtaining the ecosystem carbon sequestration benefit evaluation result of the mine restoration area. The method can realize the rapid evaluation of the carbon sequestration benefit of the restored mine ecosystem.

Description

Technical Field

[0001] The invention relates to a method, device and system for evaluating the carbon fixation benefit of restoring a mine ecosystem, and belongs to the technical field of mine ecological restoration technology. Background Art

[0002] Mining leads to the destruction of vegetation in the original ecosystem. The original soil layer and rock mass are excavated during the mining process, resulting in a decrease in soil and vegetation carbon sequestration in the excavation area. At the same time, some artificial intervention measures in the mining process and mining ecological restoration construction activities will also increase carbon dioxide emissions in the mining area to varying degrees, causing the excavation area to gradually become a carbon source. The primary task of mine ecological restoration is to carry out slope management and stabilize the slope to ensure that carbon sequestration is carried out in a stable area; since soil is the largest carbon pool in terrestrial ecosystems, soil remodeling is an important part of the mine restoration process. The soil organic carbon content is increased by re-covering, soil biological activities and other means, thereby increasing the soil carbon sequestration capacity; vegetation reconstruction can strengthen the carbon sequestration of surface vegetation and form a relatively stable carbon sequestration system with the soil.

[0003] At present, most of the evaluations of the carbon sequestration benefits of terrestrial ecosystems are aimed at large-scale, concentrated ecosystems, while the restoration of mining ecosystems is characterized by small areas and high dispersion, and existing relevant technologies are difficult to adapt to. Therefore, establishing a corresponding evaluation system based on field surveys and indoor test analysis results has strong practical significance and application value for evaluating the carbon sequestration capacity of restoration mining ecosystems.

[0004] The carbon sequestration capacity of the restored mining ecosystem is affected by multiple factors, and there is no definite evaluation index and evaluation system for the carbon sequestration benefit assessment of the restored mining ecosystem. Therefore, this paper studies and improves the existing shortcomings of the carbon sequestration benefit assessment of the restored mining ecosystem, and proposes a carbon sequestration benefit evaluation method for the restored mining ecosystem based on field investigation and multiple factors. Summary of the invention

[0005] The purpose of the present invention is to provide a method, device and system for evaluating the carbon sequestration benefits of restoring a mining ecosystem, and to achieve the effect of rapid evaluation of the carbon sequestration benefits of restoring a mining ecosystem by establishing a multi-level carbon sequestration benefit evaluation system for restoring a mining ecosystem.

[0006] In order to achieve the above objectives / solve the above technical problems, the present invention is implemented by adopting the following technical solutions.

[0007] In one aspect, the present invention provides a method for evaluating the carbon sequestration benefits of restoring a mine ecosystem, comprising:

[0008] Obtain the restoration status of the indicator layer evaluation indicators in the mine restoration area;

[0009] Determine the evaluation level of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the level range of the carbon sequestration benefit evaluation indicators;

[0010] According to the evaluation levels of the evaluation indicators of the indicator layer and the quantitative values ​​corresponding to the evaluation levels, the membership matrix of the evaluation indicators of the indicator layer is obtained;

[0011] Setting the importance discriminant matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators, and obtaining the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator;

[0012] According to the evaluation index weights of the indicator layer and the evaluation index membership matrix of the indicator layer, the evaluation index membership matrix of the criterion layer is obtained;

[0013] If the consistency ratios of the importance discriminant matrices of the criterion layer evaluation indicators and the indicator layer evaluation indicators meet the set parameters, the weights of the criterion layer evaluation indicators and the criterion layer evaluation indicator membership matrix are synthesized to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area.

[0014] Furthermore, the criterion layer evaluation indicators respectively include several indicator layer evaluation indicators;

[0015] Several indicator layer evaluation indicators are classified into corresponding criterion layer evaluation indicators according to their own characteristics.

[0016] Furthermore, the determination of the evaluation level of the indicator layer evaluation index according to the restoration status of the indicator layer evaluation index and the level range of the carbon sequestration benefit evaluation index specifically includes:

[0017] According to the restoration status of the evaluation indicators of the indicator layer, the carbon sequestration benefit evaluation indicator grade range is divided, and the evaluation grade of the evaluation indicators of each indicator layer is determined. The evaluation grades include: excellent, good, medium, and poor.

[0018] Furthermore, obtaining the index layer evaluation index membership matrix according to the evaluation levels of the index layer evaluation indicators and the quantitative values ​​corresponding to the evaluation levels specifically includes:

[0019] The quantitative values ​​corresponding to the evaluation levels specifically include:

[0020] ;

[0021] in: It is the quantitative value of the evaluation index of the index layer. When it is negative, the result is 0. is the lower limit of the quantitative evaluation set, is the lower limit of the evaluation level interval of the indicator layer evaluation index, is the actual value of the evaluation index at the index layer, is the length of the evaluation level interval of the indicator layer evaluation index, The length of the evaluation set interval where the evaluation index of the indicator layer is located;

[0022] The quantitative value evaluation set for excellent evaluation grade is 0-10; the quantitative value evaluation set for good evaluation grade is 10-20; the quantitative value evaluation set for medium evaluation grade is 20-30; the quantitative value evaluation set for poor evaluation grade is above 30. The specific value is determined by the percentage of the actual value of each indicator in the evaluation grade interval, and the integer value is used if it is less than an integer.

[0023] The evaluation index membership matrix expression is:

[0024] ;

[0025] in, is the membership matrix corresponding to the evaluation indicators of the indicator layer;

[0026] For the The membership degree of the evaluation index of the index layer to the evaluation level k, when the evaluation level is excellent, k=1; when the evaluation level is good, k=2; when the evaluation level is medium, k=3; when the evaluation level is poor, k=4;

[0027] in:

[0028] ;

[0029] ;

[0030] ;

[0031] ;

[0032] in: The evaluation indicators of each indicator layer are quantitatively valued according to the percentage of the evaluation level. .

[0033] Furthermore, the step of setting the importance discrimination matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators and obtaining the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator specifically includes:

[0034] The importance discriminant matrix of the evaluation indicators at the criterion layer obtains the corresponding weights of each evaluation indicator at the criterion layer:

[0035] ;

[0036] ;

[0037] ;

[0038] in: is the importance discriminant matrix of the evaluation indexes at the criterion layer, is the order of the discriminant matrix for the importance of evaluation indicators at the criterion layer; Evaluation index for the criterion layer Relative quasi-layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the criterion level;

[0039] The importance discriminant matrix of the indicator layer evaluation indicators obtains the corresponding weights of each evaluation indicator at the indicator layer:

[0040] ;

[0041] ;

[0042] ;

[0043] in: is the importance discriminant matrix of the indicator layer evaluation indicators, The order of the discriminant matrix for the importance of evaluation indicators at the indicator layer; Evaluation index for the indicator layer Relative indicator layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the indicator layer.

[0044] Furthermore, according to the indicator layer evaluation indicator weights and the indicator layer evaluation indicator membership matrix, obtaining the criterion layer evaluation indicator membership matrix specifically includes:

[0045] ;

[0046] in: is the membership matrix of the evaluation indexes at the criterion layer, is the evaluation index weight of the index layer, It is the evaluation index membership matrix of the index layer.

[0047] Furthermore, the consistency ratio of the importance discrimination matrix of the criterion layer evaluation index and the index layer evaluation index both meet the set parameters, specifically including:

[0048] Obtain consistency index of the importance discriminant matrix of criterion layer evaluation indicators :

[0049] ;

[0050] ;

[0051] in, is the consistency index of the importance degree of each evaluation index at the criterion layer. is the maximum characteristic root of the importance discriminant matrix of the evaluation index of the criterion layer, is the order of the importance judgment matrix of the evaluation indicators of the criterion layer;

[0052] Obtain the consistency ratio of the importance discriminant matrix of the evaluation index at the criterion level : ;

[0053] in, is the consistency ratio of the discriminant matrix of the importance of the evaluation indicators at the criterion layer; is the average consistency index of the importance degree of the criterion layer evaluation index discriminant matrix, when When , the importance discrimination matrix is ​​consistent; if , then the importance discrimination matrix needs to be reset;

[0054] Obtain consistency index of the importance discriminant matrix of the indicator layer evaluation index :

[0055] ;

[0056] ;

[0057] in, is the consistency indicator, is the maximum characteristic root of the discriminant matrix of the importance of the evaluation index of the index layer, The order of the importance judgment matrix for the indicator layer evaluation indicators;

[0058] Obtain the consistency ratio of the importance discriminant matrix of each evaluation index at the index layer :

[0059] ;

[0060] in, It is the consistency ratio of the discriminant matrix of the importance of each evaluation index at the index layer; is the average consistency index of the discriminant matrix of the evaluation index importance of the index layer, when When , the importance discrimination matrix is ​​consistent; if , it is necessary to reset the importance discriminant matrix.

[0061] Furthermore, the weights of the criterion layer evaluation indicators are synthesized with the criterion layer evaluation indicator membership matrix to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area, specifically including:

[0062] ;

[0063] in: is the weight of the evaluation index at the criterion level, is the membership matrix of the evaluation indexes at the criterion layer, is the membership degree of the evaluation grade, To evaluate the membership of the good grade, is the degree of membership in the evaluation level, is the membership degree of the evaluation grade difference.

[0064] In a second aspect, the present invention provides a device for evaluating the carbon sequestration benefits of restoring a mine ecosystem, comprising:

[0065] Restoration module: used to obtain the restoration status of the indicator layer evaluation indicators in the mine restoration area;

[0066] Grade module: used to determine the evaluation grade of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the grade range of the carbon sequestration benefit evaluation indicators;

[0067] A quantification module is used to obtain the index layer evaluation index membership matrix according to the evaluation level of the index layer evaluation index and the quantitative value corresponding to the evaluation level;

[0068] The weight module is used to set the importance discrimination matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators, and obtain the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator;

[0069] A matrix module, used to obtain the criterion layer evaluation indicator membership matrix according to the indicator layer evaluation indicator weights and the indicator layer evaluation indicator membership matrix;

[0070] The evaluation module is used to synthesize the weights of the criterion layer evaluation indicators and the criterion layer evaluation indicator membership matrix if the consistency ratios of the importance discrimination matrices of the criterion layer evaluation indicators and the indicator layer evaluation indicators meet the set parameters, so as to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area.

[0071] In a third aspect, the present invention provides a device system for evaluating the carbon sequestration benefits of restoring a mining ecosystem, comprising:

[0072] Memory, for storing computer programs / instructions;

[0073] A processor is used to execute the computer program / instructions to implement the steps of the above-mentioned method for evaluating the carbon sequestration benefits of restoring a mining ecosystem.

[0074] Compared with the prior art, the present invention has the following beneficial effects:

[0075] (1) The present invention establishes an evaluation model for the carbon sequestration benefit of restored mine ecosystems, determines the evaluation indicators that affect the evaluation of the carbon sequestration benefit of restored mine ecosystems, clarifies the quantitative value standards and weight calculation methods of the evaluation indicators, determines the importance of each evaluation indicator, and realizes the combination of qualitative analysis and quantitative evaluation of the carbon sequestration benefit of restored mine ecosystems based on membership functions and membership matrices, and specifically applies the evaluation model to the evaluation of the carbon sequestration benefit of actual mine ecosystems. This method can not only realize the rapid evaluation of the carbon sequestration benefit of the overall ecosystem of the restored mine, but also make an evaluation and judgment on the carbon sequestration benefit of each component of the mine ecosystem in the restoration area;

[0076] (2) Based on field investigation, the present invention determines the method and corresponding requirements for collecting data on vegetation communities, soil, and slope stability of restored mines, thereby establishing a multi-level carbon sequestration benefit evaluation system for restored mine ecosystems. This system can quickly evaluate the carbon sequestration benefits of restored mine ecosystems, has strong adaptability, and is suitable for large-scale application. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 It is a schematic diagram of the process of the present invention;

[0078] Figure 2 It is a schematic diagram of the evaluation model structure of the present invention;

[0079] Figure 3 It is a schematic diagram of the five-point soil sampling method of the present invention. DETAILED DESCRIPTION

[0080] It should be noted that:

[0081] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations on the technical solution of the present invention. The embodiments of the present invention and the technical features in the embodiments may be combined with each other unless there is a conflict.

[0082] The term "and / or" is only a description of the association relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " generally indicates that the related objects are in an "or" relationship.

[0083] Example 1

[0084] As attached Figure 1As shown, the present invention provides a method for evaluating the carbon sequestration benefits of restoring a mine ecosystem, comprising:

[0085] S1: Combined with the on-site survey results of the mine ecological restoration area, clarify the status of vegetation restoration, slope cover layer, and slope stability in different mine ecological restoration areas, and obtain relevant data of the mine restoration area, including:

[0086] S11: Obtain the status of vegetation restoration in the mine ecological restoration area, including: vegetation slope connectivity, unit area coverage, vegetation structure data, and collect vegetation samples;

[0087] The vegetation carbon content C1 was obtained by potassium dichromate-sulfuric acid oxidation wet burning method;

[0088] The vegetation slope connectivity rate C2 is obtained by the ratio of the vegetation coverage area S1 of the repaired mine slope to the repaired mine slope area S2, as calculated as follows:

[0089] ;

[0090] The coverage per unit area C3 is obtained by the ratio of the vertical projection area S3 of the vegetation per unit area of ​​the repaired mine to the unit area S4 of the repaired mine slope, as calculated as follows:

[0091] ;

[0092] Vegetation structure data include: height, coverage, etc. of herbaceous plants, height, coverage, number of shrubs, height, density, breast diameter, etc. of trees;

[0093] Vegetation biomass C4, the vegetation in the sample plot was collected by clear-cutting method and its fresh weight was measured, and the dry weight of the vegetation in each sample plot was determined by drying method;

[0094] The requirements for vegetation sample collection include: for herbs, all herbs are collected in a 1m×1m sample plot based on the clear-cutting method; for shrubs, 3-5 shrubs representing the average growth are collected in a 2m×2m sample plot based on the clear-cutting method; for trees, the height, breast diameter, branch density and other data of trees in a 10m×10m sample plot are collected based on the standard tree method.

[0095] S12: Obtain the current status of the slope cover soil layer in the mine ecological restoration area, including soil type, soil thickness, and collect soil samples;

[0096] Soil types include gravelly, sandy, sandy loam, loam, and clay;

[0097] Soil thickness measurement requires: Select five points in a single area of ​​the mine and measure the soil thickness at each point. The average value is used to replace the soil thickness, as calculated below:

[0098] ;

[0099] In the formula, is the average thickness of the soil cover in each area of ​​the sample plot, , …, is the soil cover thickness at each point in a single area of ​​the sample plot;

[0100] like Figure 3 As shown, soil sampling requirements include: collecting samples at depths of 0-10 cm and 10-20 cm using a five-point sampling method within the sample plot, with each sample weighing approximately 500-1000 g;

[0101] Soil organic carbon content C5, the soil organic carbon content was obtained by potassium dichromate-concentrated sulfuric acid external heating method;

[0102] Soil total nitrogen content, C6, was determined using a CN element analyzer;

[0103] The total phosphorus content of soil, C7, was determined by UV spectrophotometry;

[0104] S13: Obtain the current status of slope restoration in the mine ecological restoration area, including: slope cover soil scouring and slope stability status;

[0105] The anti-scouring capacity of slope soil C8, which is the ratio of the area of ​​gully development in the covering soil to the total area of ​​the slope;

[0106] The local stability of the slope C9 is the ratio of the local unstable damage area of ​​the slope to the total area of ​​the slope.

[0107] S2: Figure 2 As shown, combined with the evaluation objectives and restoration status, the evaluation indicators corresponding to different evaluation levels in the evaluation objective system are determined, including:

[0108] S21: The evaluation level is divided into: target level, quasi-measurement level and indicator level;

[0109] Based on the restoration status data obtained, the evaluation indicators of the target layer are: evaluation of carbon sequestration benefits of restoration of mining ecosystems;

[0110] Determine the vegetation community evaluation index, soil evaluation index, and slope coordinated stability evaluation index as the criterion layer evaluation index;

[0111] The vegetation carbon content, vegetation connectivity, vegetation coverage per unit area, vegetation biomass, soil organic carbon content, soil total nitrogen content, soil total phosphorus content, soil anti-scouring capacity, and local slope stability were determined as the evaluation indicators of the index layer;

[0112] S22: Establish a set of evaluation indicators:

[0113] ;

[0114] ;

[0115] ;

[0116] ;

[0117] in, is the target layer evaluation index set, B1, B2, B3 are the vegetation community evaluation factor set, soil evaluation factor set, slope coordinated stability evaluation factor set, B1, B2, B3 are the criterion layer evaluation index set; C1 is the vegetation carbon content, C2 is the vegetation connectivity rate, C3 is the vegetation coverage per unit area, C4 is the vegetation biomass, C5 is the soil organic carbon content, C6 is the soil total nitrogen content, C7 is the soil total phosphorus content, C8 is the soil anti-scouring ability, C9 is the local stability of the slope, C1-C9 are the indicator layer evaluation indicators.

[0118] S3: Obtain the corresponding weight values ​​of the evaluation indicators of carbon sequestration benefits of restoring mining ecosystems, including:

[0119] S31: Determine the evaluation level of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the level range of the carbon sequestration benefit evaluation indicators;

[0120] According to the restoration status of the indicator layer evaluation indicators, the carbon sequestration benefit evaluation indicator level range is divided, and the evaluation level of each indicator layer evaluation indicator is determined. The evaluation levels include: excellent, good, medium, and poor;

[0121] The grade range of carbon sequestration benefit evaluation indicators for restoration of mining ecosystems is as follows:

[0122] Table 1 Evaluation index level range of carbon sequestration benefits of restored mining ecosystems

[0123]

[0124] S32: Obtaining the index layer evaluation index membership matrix according to the evaluation levels of the index layer evaluation indicators and the quantitative values ​​corresponding to the evaluation levels;

[0125] The evaluation levels of the indicator layer evaluation indicators and the quantitative values ​​corresponding to the evaluation levels are shown in Table 2 below:

[0126] Table 2 Evaluation value basis and quantitative value

[0127]

[0128] The quantitative values ​​corresponding to the evaluation levels specifically include:

[0129] ;

[0130] in: It is the quantitative value of the evaluation index of the index layer. When it is negative, the result is 0. is the lower limit of the quantitative evaluation set, is the lower limit of the evaluation level interval of the indicator layer evaluation index, is the actual value of the evaluation index at the index layer, is the length of the evaluation level interval of the indicator layer evaluation index, The length of the evaluation set interval where the evaluation index of the indicator layer is located;

[0131] The quantitative value evaluation set of excellent evaluation level is 0-10; the quantitative value evaluation set of good evaluation level is 10-20; the quantitative value evaluation set of medium evaluation level is 20-30; the quantitative value evaluation set of poor evaluation level is above 30;

[0132] The evaluation index membership matrix expression is:

[0133] ;

[0134] in, is the membership matrix corresponding to the evaluation indicators of the indicator layer;

[0135] For the The membership degree of the evaluation index of the index layer to the evaluation level k, when the evaluation level is excellent, k=1; when the evaluation level is good, k=2; when the evaluation level is medium, k=3; when the evaluation level is poor, k=4;

[0136] in:

[0137] ;

[0138] ;

[0139] ;

[0140] ;

[0141] in: Complete quantitative value determination for each indicator layer evaluation index based on the percentage within the evaluation level; .

[0142] S33: setting an importance discrimination matrix of the criterion layer evaluation index and the indicator layer evaluation index, and obtaining the corresponding weights of each criterion layer evaluation index and the indicator layer evaluation index;

[0143] The importance discriminant matrix of the evaluation indicators at the criterion layer obtains the corresponding weights of each evaluation indicator at the criterion layer:

[0144] ;

[0145] ;

[0146] ;

[0147] in: is the importance discriminant matrix of the evaluation indexes at the criterion layer, is the order of the discriminant matrix for the importance of evaluation indicators at the criterion layer; Evaluation index for the criterion layer Relative quasi-layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the criterion level;

[0148] The importance discriminant matrix of the indicator layer evaluation indicators obtains the corresponding weights of each evaluation indicator at the indicator layer:

[0149] ;

[0150] ;

[0151] ;

[0152] in: is the importance discriminant matrix of the indicator layer evaluation indicators, The order of the discriminant matrix for the importance of evaluation indicators at the indicator layer; Evaluation index for the indicator layer Relative indicator layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the indicator layer;

[0153] Among them: The judgment matrix scale and its meaning are shown in Table 3 below:

[0154] Table 3 Judgment matrix scale and its meaning

[0155]

[0156] The above factors are judged by taking two indicator layer evaluation indicators or criterion layer evaluation indicators of the same evaluation level;

[0157] S34: Obtaining the criterion layer evaluation indicator membership matrix according to the indicator layer evaluation indicator weights and the indicator layer evaluation indicator membership matrix;

[0158] ;

[0159] in: is the membership matrix of the evaluation indexes at the criterion layer, is the evaluation index weight of the index layer, is the evaluation index membership matrix of the index layer;

[0160] S35: Determine whether the consistency ratio of the importance of the evaluation index at the criterion layer and the evaluation index at the indicator layer meets the set parameters, including:

[0161] Obtain consistency index of the importance discriminant matrix of criterion layer evaluation indicators :

[0162] ;

[0163] ;

[0164] in, is the consistency index of the importance degree of each evaluation index at the criterion layer. is the maximum characteristic root of the importance discriminant matrix of the evaluation index of the criterion layer, is the order of the importance judgment matrix of the evaluation indicators of the criterion layer;

[0165] Obtain the consistency ratio of the importance discriminant matrix of the evaluation index at the criterion level :

[0166] ;

[0167] in, is the consistency ratio of the discriminant matrix of the importance of the evaluation indicators at the criterion layer; is the average consistency index of the importance degree of the criterion layer evaluation index discriminant matrix, when When , the importance discrimination matrix is ​​consistent; if , then the importance discrimination matrix needs to be reset;

[0168] Obtain consistency index of the importance discriminant matrix of the indicator layer evaluation index :

[0169] ;

[0170] ;

[0171] in, is the consistency indicator, is the maximum characteristic root of the discriminant matrix of the importance of the evaluation index of the index layer, The order of the importance judgment matrix for the indicator layer evaluation indicators;

[0172] Obtain the consistency ratio of the importance discriminant matrix of each evaluation index at the index layer :

[0173] ;

[0174] in, It is the consistency ratio of the discriminant matrix of the importance of each evaluation index at the index layer; is the average consistency index of the discriminant matrix of the evaluation index importance of the index layer, when When , the importance discrimination matrix is ​​consistent; if , then the importance discrimination matrix needs to be reset;

[0175] S4: The step of synthesizing the weights of the criterion layer evaluation indicators with the criterion layer evaluation indicator membership matrix to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area specifically includes:

[0176] ;

[0177] in: is the weight of the evaluation index at the criterion level, is the membership matrix of the evaluation indexes at the criterion layer, is the membership degree of the evaluation grade, To evaluate the membership of the good grade, is the degree of membership in the evaluation level, is the membership degree of the evaluation grade difference.

[0178] Embodiment 2:

[0179] Taking a mine in Jiangsu Province as an example, the above process is introduced in detail below: Based on the field survey results and indoor experiments, the evaluation indicators of mine ecological restoration effects are determined. The specific data are shown in Table 4.

[0180] Table 4 Evaluation index data of mine ecological restoration effect

[0181]

[0182] The judgment matrix and indicator weights of evaluation indicators at different levels in the model are calculated, and a consistency test is performed. The specific calculation results are shown in Table 5.

[0183] Table 5 Judgment matrix and consistency test

[0184]

[0185] The weight set of evaluation indicators at the criterion layer is as follows:

[0186] ;

[0187] The weight set of indicator layer evaluation indicators is as follows:

[0188] ;

[0189] ;

[0190] ;

[0191] According to the evaluation grade standard and the evaluation factor membership function, the level of the mine ecological restoration carbon fixation benefit evaluation index is evaluated, and the index layer evaluation index membership matrix is ​​obtained. as follows:

[0192] ;

[0193] ;

[0194] ;

[0195] Evaluate the indicator membership matrix according to the indicator layer and the weights of evaluation indicators at each indicator layer Calculate the membership of the criterion layer , conduct criterion layer evaluation and obtain criterion layer membership The evaluation results are shown in Table 6.

[0196] Table 6 Evaluation results of the criterion layer of a repaired mine

[0197]

[0198] Criteria level membership matrix as follows:

[0199]

[0200] Combined with the criterion layer membership of each indicator layer B under the target layer A , and the weight values ​​of each indicator in layer B ,The evaluation results of the target layer of a certain repaired mine are shown in Table 7.

[0201] Table 7 Evaluation results of target layer of a repaired mine

[0202]

[0203] According to the maximum membership principle, the carbon sequestration benefit of a restored mine ecosystem in Jiangsu Province is good.

[0204] Embodiment 3:

[0205] This embodiment provides a device for evaluating the carbon sequestration benefits of restoring a mine ecosystem, comprising:

[0206] Restoration module: used to obtain the restoration status of the indicator layer evaluation indicators in the mine restoration area;

[0207] Grade module: used to determine the evaluation grade of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the grade range of the carbon sequestration benefit evaluation indicators;

[0208] A quantification module is used to obtain the index layer evaluation index membership matrix according to the evaluation level of the index layer evaluation index and the quantitative value corresponding to the evaluation level;

[0209] The weight module is used to set the importance discrimination matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators, and obtain the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator;

[0210] A matrix module, used to obtain the criterion layer evaluation indicator membership matrix according to the indicator layer evaluation indicator weights and the indicator layer evaluation indicator membership matrix;

[0211] The evaluation module is used to synthesize the weights of the criterion layer evaluation indicators and the criterion layer evaluation indicator membership matrix if the consistency ratios of the importance discrimination matrices of the criterion layer evaluation indicators and the indicator layer evaluation indicators meet the set parameters, so as to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area.

[0212] Example 4

[0213] This embodiment provides a device system for evaluating the carbon sequestration benefits of restoring a mining ecosystem, comprising:

[0214] Memory, for storing computer programs / instructions;

[0215] A processor is used to execute the computer program / instructions to implement the steps of the above-mentioned method for evaluating the carbon sequestration benefits of restoring a mining ecosystem.

[0216] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0217] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0218] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0219] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0220] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A method for evaluating the carbon sequestration benefits of restoring a mine ecosystem, characterized in that: include: Obtain the restoration status of the indicator layer evaluation indicators in the mine restoration area; Determine the evaluation level of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the level range of the carbon sequestration benefit evaluation indicators; According to the evaluation levels of the evaluation indicators of the indicator layer and the quantitative values ​​corresponding to the evaluation levels, the membership matrix of the evaluation indicators of the indicator layer is obtained; Setting the importance discriminant matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators, and obtaining the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator; According to the evaluation index weights of the indicator layer and the evaluation index membership matrix of the indicator layer, the evaluation index membership matrix of the criterion layer is obtained; If the consistency ratios of the importance discriminant matrices of the criterion layer evaluation indicators and the indicator layer evaluation indicators meet the set parameters, the weights of the criterion layer evaluation indicators and the criterion layer evaluation indicator membership matrix are synthesized to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area.

2. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 1, characterized in that: The criterion layer evaluation indicators respectively include several indicator layer evaluation indicators; Several indicator layer evaluation indicators are classified into corresponding criterion layer evaluation indicators according to their own characteristics.

3. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 2, characterized in that: Determining the evaluation level of the indicator layer evaluation index according to the restoration status of the indicator layer evaluation index and the level range of the carbon sequestration benefit evaluation index specifically includes: According to the restoration status of the evaluation indicators of the indicator layer, the carbon sequestration benefit evaluation indicator grade range is divided, and the evaluation grade of the evaluation indicators of each indicator layer is determined. The evaluation grades include: excellent, good, medium, and poor.

4. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 3 is characterized in that: The step of obtaining the index layer evaluation index membership matrix according to the evaluation grades of the index layer evaluation indexes and the quantitative values ​​corresponding to the evaluation grades specifically includes: The quantitative values ​​corresponding to the evaluation levels specifically include: ； in: It is the quantitative value of the evaluation index of the index layer. When it is negative, the result is 0. is the lower limit of the quantitative evaluation set, is the lower limit of the evaluation level interval of the indicator layer evaluation index, is the actual value of the evaluation index at the index layer, is the length of the evaluation level interval of the indicator layer evaluation index, The length of the evaluation set interval where the evaluation index of the indicator layer is located; The quantitative value evaluation set of excellent evaluation level is 0-10; the quantitative value evaluation set of good evaluation level is 10-20; the quantitative value evaluation set of medium evaluation level is 20-30; the quantitative value evaluation set of poor evaluation level is above 30; The membership matrix expression of the indicator layer evaluation index is: ； in, is the membership matrix corresponding to the evaluation indicators of the indicator layer; For the The membership degree of the evaluation index of the index layer to the evaluation level k, when the evaluation level is excellent, k=1; when the evaluation level is good, k=2; when the evaluation level is medium, k=3; when the evaluation level is poor, k=4; in: ； ； ； ； in: Complete quantitative value determination for each indicator layer evaluation index based on the percentage within the evaluation level; .

5. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 4, characterized in that: The step of setting the importance degree discrimination matrix of the criterion layer evaluation index and the indicator layer evaluation index, and obtaining the corresponding weights of each criterion layer evaluation index and the indicator layer evaluation index specifically includes: The importance discriminant matrix of the evaluation indicators at the criterion layer obtains the corresponding weights of each evaluation indicator at the criterion layer: ； ； ； in: is the importance discriminant matrix of the evaluation indexes at the criterion layer, is the order of the discriminant matrix for the importance of evaluation indicators at the criterion layer; Evaluation index for the criterion layer Relative quasi-layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the criterion level; The importance discriminant matrix of the indicator layer evaluation indicators obtains the corresponding weights of each evaluation indicator at the indicator layer: ； ； ； in: is the importance discriminant matrix of the indicator layer evaluation indicators, The order of the discriminant matrix for the importance of evaluation indicators at the indicator layer; Evaluation index for the indicator layer Relative indicator layer evaluation index The importance of pairwise comparison values; , , is the number of evaluation indicators at the indicator layer.

6. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 5, characterized in that: According to the weights of the evaluation indicators at the indicator layer and the membership matrix of the evaluation indicators at the indicator layer, obtaining the membership matrix of the evaluation indicators at the criterion layer specifically includes: ； in: is the membership matrix of the evaluation indexes at the criterion layer, is the evaluation index weight of the index layer, It is the evaluation index membership matrix of the index layer.

7. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 6, characterized in that: The consistency ratio of the importance degree discriminant matrix of the criterion layer evaluation index and the index layer evaluation index all meet the set parameters, specifically including: Obtain consistency index of the importance discriminant matrix of criterion layer evaluation indicators : ； ； in, is the consistency index of the importance of each evaluation index at the criterion layer. is the maximum characteristic root of the importance discriminant matrix of the evaluation index of the criterion layer, is the order of the importance judgment matrix of the evaluation indicators of the criterion layer; Obtain the consistency ratio of the importance discriminant matrix of the evaluation index at the criterion level : ； in, is the consistency ratio of the discriminant matrix of the importance of the evaluation indicators at the criterion layer; is the average consistency index of the importance degree of the criterion layer evaluation index discriminant matrix, when When , the importance discrimination matrix is ​​consistent; if , then the importance discrimination matrix needs to be reset; Obtain consistency index of the importance discriminant matrix of the indicator layer evaluation index : ； ； in, is the consistency indicator, is the maximum characteristic root of the discriminant matrix of the importance of the evaluation index of the index layer, The order of the importance judgment matrix for the indicator layer evaluation indicators; Obtain the consistency ratio of the importance discriminant matrix of each evaluation index at the index layer : ； in, It is the consistency ratio of the discriminant matrix of the importance of each evaluation index at the index layer; is the average consistency index of the discriminant matrix of the evaluation index importance of the index layer, when When , the importance discrimination matrix is ​​consistent; if , it is necessary to reset the importance discriminant matrix.

8. The method for evaluating the carbon sequestration benefits of restoring a mine ecosystem according to claim 7, characterized in that: The weights of the criterion layer evaluation indicators are synthesized with the criterion layer evaluation indicator membership matrix to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area, specifically including: ； in: is the weight of the evaluation index at the criterion level, is the membership matrix of the evaluation indexes at the criterion layer, is the membership degree of the evaluation grade, To evaluate the membership of the good grade, is the degree of membership in the evaluation level, is the membership degree of the evaluation grade difference.

9. A device for evaluating the carbon sequestration benefits of restoring a mine ecosystem, characterized in that: include: Restoration module: used to obtain the restoration status of the indicator layer evaluation indicators in the mine restoration area; Grade module: used to determine the evaluation grade of the indicator layer evaluation indicators according to the restoration status of the indicator layer evaluation indicators and the grade range of the carbon sequestration benefit evaluation indicators; A quantification module is used to obtain the index layer evaluation index membership matrix according to the evaluation level of the index layer evaluation index and the quantitative value corresponding to the evaluation level; The weight module is used to set the importance discrimination matrix of the criterion layer evaluation indicators and the indicator layer evaluation indicators, and obtain the corresponding weights of each criterion layer evaluation indicator and the indicator layer evaluation indicator; A matrix module, used to obtain the criterion layer evaluation indicator membership matrix according to the indicator layer evaluation indicator weights and the indicator layer evaluation indicator membership matrix; The evaluation module is used to synthesize the weights of the criterion layer evaluation indicators and the criterion layer evaluation indicator membership matrix if the consistency ratios of the importance discrimination matrices of the criterion layer evaluation indicators and the indicator layer evaluation indicators meet the set parameters, so as to obtain the ecosystem carbon sequestration benefit evaluation results of the mine restoration area.

10. A device system for evaluating the carbon sequestration benefits of restoring a mining ecosystem, characterized in that: include: Memory, for storing computer programs / instructions; A processor is used to execute the computer program / instructions to implement the steps of the method for evaluating the carbon sequestration benefits of restoring a mining ecosystem as described in any one of claims 1-8.

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