Ecological environment quality evaluation method and related device

Abstract

The invention provides an ecological environment quality evaluation method and a related device, and belongs to the technical field of ecological environment quality evaluation. The method comprises the following steps: obtaining a relative ecological environment quality index of each pixel based on a top-level community actual quality index value of each ecological system in each sub-region, and grading the relative ecological environment quality index of each pixel to obtain a plurality of grades; determining a quality index of each ecological system based on the plurality of grades; determining the quality index of the comprehensive ecological system based on the quality index of each ecological system; based on the quality index of the comprehensive ecological system, obtaining a pixel-level ecological environment quality index of the to-be-evaluated region; and obtaining an administrative region ecological environment quality evaluation result corresponding to the to-be-evaluated region based on the pixel-level ecological environment quality index of the to-be-evaluated region. The problem that the accuracy of ecological environment quality evaluation is not high is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ecological environment quality evaluation, and particularly relates to an ecological environment quality evaluation method and related device. BACKGROUND

[0002] At present, the existing ecological environment quality evaluation methods mainly include the following two kinds: The first kind is based on the characteristics of typical ecological system types, and the key parameters for ecological quality evaluation such as plant community coverage, tree height (stem height), diameter at breast height (diameter at neck), and crown width (crown diameter, cluster diameter) are obtained by using field ecological quadrat (plot, belt, and line) investigation, setting up ecological fixed observation sites, and the like. On this basis, the indexes such as relative frequency, relative density, relative coverage, and diversity index are obtained by statistical analysis of the key parameters. Based on various indexes indicating the characteristics of the ecological system and the composition of the habitat, the current situation of the regional ecological environment quality is indirectly represented.

[0003] The second kind is based on remote sensing data to obtain original surface images, and regional ecological environment monitoring data are obtained by index calculation and parameter inversion. In addition, ground soil, hydrological, and other environmental investigation data, as well as meteorological, social economic, and other data are obtained. After preprocessing such as correction and standardization of all the obtained data, spatial analysis and index evaluation models such as analytic hierarchy process and remote sensing comprehensive index are constructed to realize comprehensive evaluation of the ecological environment quality in a large regional range.

[0004] After years of development and application, both of the above two kinds of ecological environment quality evaluation methods have been widely applied in related fields. In particular, in recent years, the ecological environment quality evaluation technology based on remote sensing technology has the advantages of easy availability of data and high spatial and temporal accuracy. However, both of the two kinds of ecological environment quality evaluation methods have some problems to be solved in practical application, which are as follows: Firstly, methods based on obtaining full parameters through landscape ecology surveys for calculation require significant manpower and time for investigation, and the results largely depend on the experience of the survey personnel, making precise quantification of evaluation results difficult. Secondly, this method has limitations in comprehensive evaluation across ecosystems, easily leading to inconsistent evaluation standards between systems and resulting in significant heterogeneity among subsystems. Thirdly, methods based on remote sensing to acquire large-scale impact data and perform index calculations and parameter inversion to achieve comprehensive evaluation of regional ecological environment quality also face challenges. This method demands high-quality remote sensing data and strict time requirements for data acquisition; the reliability of the evaluation results is closely related to the quality of the remote sensing data, the evaluation method, and the weighting of indicators. Furthermore, remote sensing data struggles to directly and precisely distinguish between various ecological subsystems within large spatial areas, especially in arid oasis regions with significant spatial heterogeneity; evaluation results for transitional zones often fail to accurately reflect their actual conditions. Finally, there is also a method that combines ground survey data with remote sensing inversion to comprehensively evaluate the regional ecological environment quality. Although this has achieved some results, it is difficult to unify the two types of data. If there are differences between the surface survey results and the remote sensing inversion results, it will affect the reliability of the final evaluation results. Summary of the Invention

[0005] The purpose of this invention is to provide a method and related apparatus for evaluating the quality of the ecological environment, in order to solve the problem of low accuracy in the evaluation of the quality of the ecological environment in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for evaluating the quality of the ecological environment, comprising the following steps: Determine the ecosystem type of the area to be evaluated, and determine the dominant ecosystem type of the area based on the ecosystem type of the area to be evaluated; Based on the dominant ecosystem type of the identified area to be evaluated, land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated are obtained to determine the zoning scheme. According to the zoning scheme, the area to be evaluated is divided into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the actual quality index value of the top community of each ecosystem in each sub-region is calculated. Based on the actual quality index values ​​of the top community in each sub-region of each ecosystem, the relative ecological environment quality index of each pixel is obtained, and the relative ecological environment quality index of each pixel is classified into several levels. Based on several levels, the quality index of each ecosystem is determined; Based on the quality indices of each ecosystem, a comprehensive ecosystem quality index is determined. Based on the quality index of the integrated ecosystem, a pixel-level ecological environment quality index for the area to be evaluated is obtained. Based on the pixel-level ecological environment quality index of the area to be evaluated, the ecological environment quality evaluation results of the corresponding administrative region are obtained.

[0007] A further improvement of this invention is that, before calculating the actual quality index value of the top community of each ecosystem in each sub-region based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the region to be evaluated, the resolution and dimensions of the land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the region to be evaluated are unified.

[0008] A further improvement of this invention is that the calculation formula for the relative ecological environment quality index of each pixel is as follows:

[0009] in, For the first The first in the ecosystem The relative ecological environment quality index of each pixel. For the first The first in the ecosystem The actual quality index value of each pixel For the first The actual quality index value of the climax community in each subregion of the ecosystem.

[0010] A further improvement of this invention is that the formula for calculating the quality index of each ecosystem is as follows:

[0011] in, For the first The quality index of an ecosystem. For quality grade, For the first Quality level in ecosystems area, For the first The actual quality index values ​​of the climax community in each subregion of the ecosystem-like system. For the first The total area of ​​ecosystems, The total area of ​​the evaluation unit.

[0012] A further improvement of this invention is that the formula for calculating the quality index of the integrated ecosystem is:

[0013] in, It is a comprehensive index of ecosystem quality. For the first The quality index of an ecosystem. This represents the number of ecosystem types.

[0014] A further improvement of the present invention is that the classification of each pixel relative to the ecological environment quality index to obtain several levels is specifically: the classification of each pixel relative to the ecological environment quality index is carried out by the equal interval method or the natural breakpoint method to obtain several levels.

[0015] A further improvement of the present invention is that, specifically, the method of obtaining the pixel-level ecological environment quality index of the area to be evaluated based on the quality index of the comprehensive ecosystem is: to obtain the pixel-level ecological environment quality index of the area to be evaluated by performing an area-weighted average or an arithmetic average on the quality index of the comprehensive ecosystem.

[0016] Secondly, the present invention provides an ecological environment quality assessment system, comprising: The dominant ecosystem type determination module is used to determine the ecosystem type of the area to be evaluated, and to determine the dominant ecosystem type of the area to be evaluated based on the ecosystem type of the area to be evaluated; The data acquisition module is used to acquire land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, based on the determined dominant ecosystem type of the area to be evaluated, and to determine the zoning scheme. The regional division module is used to divide the area to be evaluated into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the module calculates the actual quality index value of the top community of each ecosystem in each sub-region. The grading module is used to obtain the relative ecological environment quality index of each pixel based on the actual quality index value of the top community in each sub-region of each ecosystem, and to grade the relative ecological environment quality index of each pixel to obtain several levels. The first quality index determination module is used to determine the quality index of each ecosystem based on several levels; The second quality index determination module is used to determine the overall quality index of the ecosystem based on the quality indices of each ecosystem. The third quality index determination module is used to obtain the pixel-level ecological environment quality index of the area to be evaluated based on the quality index of the integrated ecosystem. The evaluation module is used to obtain the ecological environment quality evaluation results of the administrative region corresponding to the region to be evaluated based on the pixel-level ecological environment quality index of the region to be evaluated.

[0017] Thirdly, the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the ecological environment quality assessment method described above.

[0018] Fourthly, the present invention provides a storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the ecological environment quality assessment method described above.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The ecological environment quality assessment method proposed in this invention first determines the dominant ecosystem type of the area to be assessed. Then, based on the determined dominant ecosystem type, it acquires land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be assessed. This operation not only improves the targeting of subsequent ecological environment quality assessments but also reduces data redundancy and analysis costs. Secondly, based on the land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be assessed, it calculates the actual quality index value of the climax community in each sub-region for each ecosystem. It is evident that this invention considers a variety of factors (land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be assessed) when determining the actual quality index value of the climax community in each sub-region, thus improving the accuracy of subsequent ecological environment quality assessments. Attached Figure Description

[0020] Figure 1 This is a flowchart of the ecological environment quality assessment method of the present invention; Figure 2 This is a schematic diagram of the ecological environment quality assessment system of the present invention; Figure 3 This is a schematic diagram of the structure of the electronic device of the present invention. Detailed Implementation

[0021] To further understand the content of this invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0022] Example 1: The flowchart of the ecological environment quality assessment method of this invention is as follows: Figure 1 As shown, the ecological environment quality assessment method of the present invention includes the following steps: S1. Determine the ecosystem type of the area to be evaluated, and determine the dominant ecosystem type of the area to be evaluated based on the ecosystem type of the area to be evaluated; S2. Based on the dominant ecosystem type of the area to be evaluated, obtain land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, and determine the zoning scheme; S3. According to the zoning scheme, the area to be evaluated is divided into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the actual quality index value of the top community in each sub-region of each ecosystem is calculated. S4. Based on the actual quality index values ​​of the top community in each sub-region of each ecosystem, the relative ecological environment quality index of each pixel is obtained, and the relative ecological environment quality index of each pixel is classified into several levels. S5. Determine the quality index of each ecosystem based on several levels; S6. Determine the overall ecosystem quality index based on the quality indices of each ecosystem; S7. Based on the quality index of the integrated ecosystem, obtain the pixel-level ecological environment quality index of the area to be evaluated; S8. Based on the pixel-level ecological environment quality index of the area to be evaluated, the ecological environment quality evaluation results of the corresponding administrative region are obtained.

[0023] Example 2: A schematic diagram of the ecological environment quality assessment system of this invention is shown below. Figure 2 As shown, the ecological environment quality assessment system of the present invention includes: The dominant ecosystem type determination module is used to determine the ecosystem type of the area to be evaluated, and to determine the dominant ecosystem type of the area to be evaluated based on the ecosystem type of the area to be evaluated; The data acquisition module is used to acquire land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, based on the determined dominant ecosystem type of the area to be evaluated, and to determine the zoning scheme. The regional division module is used to divide the area to be evaluated into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the module calculates the actual quality index value of the top community of each ecosystem in each sub-region. The grading module is used to obtain the relative ecological environment quality index of each pixel based on the actual quality index value of the top community in each sub-region of each ecosystem, and to grade the relative ecological environment quality index of each pixel to obtain several levels. The first quality index determination module is used to determine the quality index of each ecosystem based on several levels; The second quality index determination module is used to determine the overall quality index of the ecosystem based on the quality indices of each ecosystem. The third quality index determination module is used to obtain the pixel-level ecological environment quality index of the area to be evaluated based on the quality index of the integrated ecosystem. The evaluation module is used to obtain the ecological environment quality evaluation results of the administrative region corresponding to the region to be evaluated based on the pixel-level ecological environment quality index of the region to be evaluated.

[0024] Example 3: The ecological environment quality assessment method of this invention includes the following steps: S1. Determine the ecosystem type of the area to be evaluated, and determine the dominant ecosystem type of the area to be evaluated based on the ecosystem type of the area to be evaluated.

[0025] S2. Based on the determined dominant ecosystem type of the area to be evaluated, obtain land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, and determine the zoning scheme.

[0026] S3. According to the zoning scheme, the area to be evaluated is divided into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the actual quality index value of the top community in each sub-region of each ecosystem is calculated.

[0027] Before calculating the actual quality index value of the top community in each sub-region of each ecosystem based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the resolution and dimensions of the land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated are unified.

[0028] S4. Based on the actual quality index values ​​of the top community in each sub-region of each ecosystem, the relative ecological environment quality index of each pixel is obtained, and the relative ecological environment quality index of each pixel is classified into several levels.

[0029] The formula for calculating the relative ecological environment quality index of each pixel in this step is as follows:

[0030] in, For the first The first in the ecosystem The relative ecological environment quality index of each pixel. For the first The first in the ecosystem The actual quality index value of each pixel For the first The actual quality index value of the climax community in each subregion of the ecosystem.

[0031] This step involves classifying each pixel relative to the ecological environment quality index into several levels. Specifically, the equal interval method or the natural breakpoint method is used to classify each pixel relative to the ecological environment quality index into several levels.

[0032] S5. Determine the quality index of each ecosystem based on several levels.

[0033] The formulas for calculating the quality index of each ecosystem in this step are as follows:

[0034] in, For the first The quality index of an ecosystem. For quality grade, For the first Quality level in ecosystems area, For the first The actual quality index values ​​of the climax community in each subregion of the ecosystem-like system. For the first The total area of ​​ecosystems, The total area of ​​the evaluation unit.

[0035] S6. Determine the overall ecosystem quality index based on the quality indices of each ecosystem.

[0036] The formula for calculating the overall ecosystem quality index in this step is:

[0037] in, It is a comprehensive index of ecosystem quality. For the first The quality index of an ecosystem. This represents the number of ecosystem types.

[0038] S7. Based on the quality index of the integrated ecosystem, obtain the pixel-level ecological environment quality index of the area to be evaluated.

[0039] In this step, based on the quality index of the integrated ecosystem, the pixel-level ecological environment quality index of the area to be evaluated is obtained. Specifically, the area-weighted average or arithmetic average of the quality index of the integrated ecosystem is used to obtain the pixel-level ecological environment quality index of the area to be evaluated.

[0040] S8. Based on the pixel-level ecological environment quality index of the area to be evaluated, the ecological environment quality evaluation results of the corresponding administrative region are obtained.

[0041] Example 4: The following is a detailed description of the method of the present invention, which includes the following steps: Step 1: Determine the dominant ecosystem type of the area to be evaluated. Based on the ecosystem type of the area to be evaluated, the dominant ecosystem type within the area is selected as the evaluation object, such as cultivated land, grassland, and forest land. The selected ecosystem type should be a direct contributor to the ecosystem services and ecological quality value of the area to be evaluated.

[0042] Step 2: Constructing Ecosystem Quality Assessment Units Based on the data resolution and evaluation area scope, use GIS (Geographic Information System) tools to create a unified grid (such as 10×10km) or directly use the administrative area scope as the basic unit for subsequent index calculation, model building and result aggregation, to ensure the uniformity and accuracy of spatial analysis, so as to facilitate effective connection with administrative unit data.

[0043] Step 3: Data Collection Collect land use type data, environmental data representing various sub-ecosystem types (such as aboveground biomass, vegetation cover, and net primary productivity), and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated (such as regional climate data, topographic data, and hydrological data). Due to inconsistencies in the quality, resolution, and coordinates of various data, use geographic information system software to unify the resolution and dimensions of all quality indicator data, and keep them consistent with the size of the ecosystem quality assessment unit related to step two, to ensure that each grid unit has completely matching environmental data.

[0044] Step 4: Ecological Environment Quality Assessment 4.1 Evaluation unit zoning based on "climate + hydrology + topography + soil" (determining the zoning scheme) The area to be evaluated is divided into several sub-regions that are relatively homogeneous internally but significantly different between units. For example, an area with "annual precipitation above 400mm, altitude below 1500m, and groundwater depth less than or equal to 5m" is divided into an independent sub-region. Based on the principles of maximizing intra-regional similarity (i.e., the top-level community pixels within the same sub-region should be as similar as possible) and maximizing inter-regional differences (i.e., the average values ​​of top-level communities between different sub-regions should be significantly different), statistical methods such as the Fray-Curtis similarity index are used to compare the intra-regional similarity and inter-regional differences of several zoning schemes, including "climate," "climate + hydrology," "climate + topography," and "climate + soil."

[0045] 4.2 Identifying the "top-level communities" within each sub-region To conduct cross-regional and comparable quality assessments, this embodiment employs a relative evaluation method "using the climax community as a reference," where the climax community represents the optimal quality state achievable under natural conditions within the sub-region. Specifically, firstly, within each sub-region, quality indicators for different ecosystem types are statistically analyzed (e.g., aboveground biomass, vegetation cover, and net primary productivity are used to characterize the quality indicators for forests, grasslands, and cultivated land, respectively). Secondly, the quality indicator data are sorted from highest to lowest, and the top 10% of pixels for each indicator are selected as the "climax community" for that type of ecosystem within the sub-region. Finally, the average quality indicator of the climax community pixels is calculated as the upper limit of the ecosystem quality for that sub-region.

[0046] 4.3 Calculate the relative ecological environment quality index of each pixel ( ) Within each "sub-region," the quality level of each ecosystem cell relative to the climax community is calculated. The calculation formula is:

[0047] in, For the first The first in the ecosystem The relative ecological environment quality index of each pixel. For the first The first in the ecosystem The actual quality indicators of each pixel (such as aboveground biomass, vegetation cover, and net primary productivity). For the first The actual quality indicators of the top community in each subregion of the ecosystem (such as aboveground biomass, vegetation cover, and net primary productivity). The calculation result is the percentage of the pixel quality relative to the top-level community.

[0048] 4.4 Classify the Relative Ecological Environment Quality Index (REQ) of each pixel. After calculating the relative ecological environment quality index (REQ) for each pixel, the REQ values ​​from 0% to 100% were evenly divided into 5 levels using the equal-interval method, with 5 being the highest level and 1 being the lowest level.

[0049] Step 5: Calculate the Integrated Ecosystem Quality Index (EQ) 5.1 Calculate the quality index of each ecosystem ( ) By aggregating "quantity" and "quality" information within the assessment unit, the formula for calculating the quality index of each ecosystem is as follows:

[0050] in, For the first The quality index of an ecosystem. For quality grade, For the first Quality level in ecosystems area, For the first The actual quality index values ​​of the climax community in each subregion of the ecosystem-like system. For the first The total area of ​​ecosystems, The total area of ​​the evaluation unit.

[0051] The higher the value, the more dominant this type of ecosystem is in terms of both scale and quality within the grid unit.

[0052] in, The quality-weighted average score reflects the average quality level of this type of ecosystem within the region (with a maximum value of 1). This represents the area percentage, used to reflect the scale of this type of ecosystem quality within a region.

[0053] 5.2 Integrated Ecosystem Quality Index (EQ) of Computational Grid All ecosystem types obtained by step-by-step calculation within this grid The values ​​are added together to obtain a unique value representing the overall ecosystem quality of the grid. The calculation formula is as follows:

[0054] in, It is a comprehensive index of ecosystem quality. For the first The quality index of an ecosystem. The number of ecosystem types (such as forests, grasslands, and cultivated land). The larger the value, the larger the overall scale and the better the quality of the ecosystem in that grid area.

[0055] Step Six: Data Aggregation and Charting After calculating the integrated ecosystem quality index (EQ) of all grids one by one, the pixel-level ecological environment quality index of the area to be evaluated is obtained.

[0056] Specifically, by performing area-weighted averaging or arithmetic averaging on the comprehensive ecosystem quality index according to actual needs, the remote sensing ecological environment index (the ecological environment quality index at the pixel level of the area to be evaluated) of the entire region can be obtained, which facilitates the subsequent analysis of socio-economic and other statistical data at the administrative unit level.

[0057] Example 5: Please see Figure 3 As shown, the present invention also provides an electronic device 100 for an ecological environment quality assessment method; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0058] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the ecological environment quality assessment method described in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0059] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0060] The memory 101 in the electronic device 100 stores multiple instructions to implement an ecological environment quality assessment method, and the processor 102 can execute the multiple instructions to achieve the following: Determine the ecosystem type of the area to be evaluated, and determine the dominant ecosystem type of the area based on the ecosystem type of the area to be evaluated; Based on the dominant ecosystem type of the identified area to be evaluated, land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated are obtained to determine the zoning scheme. According to the zoning scheme, the area to be evaluated is divided into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the actual quality index value of the top community of each ecosystem in each sub-region is calculated. Based on the actual quality index values ​​of the top community in each sub-region of each ecosystem, the relative ecological environment quality index of each pixel is obtained, and the relative ecological environment quality index of each pixel is classified into several levels. Based on several levels, the quality index of each ecosystem is determined; Based on the quality indices of each ecosystem, a comprehensive ecosystem quality index is determined. Based on the quality index of the integrated ecosystem, a pixel-level ecological environment quality index for the area to be evaluated is obtained. Based on the pixel-level ecological environment quality index of the area to be evaluated, the ecological environment quality evaluation results of the corresponding administrative region are obtained.

[0061] Example 6: If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0062] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied 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.

[0063] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0064] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0065] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for evaluating the quality of the ecological environment, characterized in that, Includes the following steps: Determine the ecosystem type of the area to be evaluated, and determine the dominant ecosystem type of the area based on the ecosystem type of the area to be evaluated; Based on the dominant ecosystem type of the identified area to be evaluated, land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated are obtained to determine the zoning scheme. According to the zoning scheme, the area to be evaluated is divided into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the actual quality index value of the top community of each ecosystem in each sub-region is calculated. Based on the actual quality index values ​​of the top community in each sub-region of each ecosystem, the relative ecological environment quality index of each pixel is obtained, and the relative ecological environment quality index of each pixel is classified into several levels. Based on several levels, the quality index of each ecosystem is determined; Based on the quality indices of each ecosystem, a comprehensive ecosystem quality index is determined. Based on the quality index of the integrated ecosystem, a pixel-level ecological environment quality index for the area to be evaluated is obtained. Based on the pixel-level ecological environment quality index of the area to be evaluated, the ecological environment quality evaluation results of the corresponding administrative region are obtained.

2. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, Before calculating the actual quality index values ​​of the top community of each ecosystem in each sub-region based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the resolution and dimensions of the land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated are unified.

3. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, The formula for calculating the relative ecological environment quality index of each pixel is as follows: in, For the first The first in the ecosystem The relative ecological environment quality index of each pixel. For the first The first in the ecosystem The actual quality index value of each pixel For the first The actual quality index value of the climax community in each subregion of the ecosystem.

4. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, The formulas for calculating the quality indices of each ecosystem are as follows: in, For the first The quality index of an ecosystem. For quality grade, For the first Quality level in ecosystems area, For the first The actual quality index values ​​of the climax community in each subregion of the ecosystem-like system. For the first The total area of ​​ecosystems, The total area of ​​the evaluation unit.

5. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, The formula for calculating the quality index of the integrated ecosystem is as follows: in, It is a comprehensive index of ecosystem quality. For the first The quality index of an ecosystem. This represents the number of ecosystem types.

6. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, The process of classifying each pixel relative to the ecological environment quality index to obtain several levels is specifically as follows: the equal interval method or the natural breakpoint method is used to classify each pixel relative to the ecological environment quality index to obtain several levels.

7. The method for evaluating the quality of the ecological environment according to claim 1, characterized in that, The method of obtaining the pixel-level ecological environment quality index of the area to be evaluated based on the quality index of the integrated ecosystem is as follows: the area-weighted average or arithmetic average of the quality index of the integrated ecosystem is used to obtain the pixel-level ecological environment quality index of the area to be evaluated.

8. An ecological environment quality assessment system, characterized in that, include: The dominant ecosystem type determination module is used to determine the ecosystem type of the area to be evaluated, and to determine the dominant ecosystem type of the area to be evaluated based on the ecosystem type of the area to be evaluated; The data acquisition module is used to acquire land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, based on the determined dominant ecosystem type of the area to be evaluated, and to determine the zoning scheme. The regional division module is used to divide the area to be evaluated into several sub-regions that are relatively homogeneous internally and have significant differences between each unit. Based on land use type data, environmental data representing various sub-ecosystem types, and environmental zoning data corresponding to the dominant ecosystem type of the area to be evaluated, the module calculates the actual quality index value of the top community of each ecosystem in each sub-region. The grading module is used to obtain the relative ecological environment quality index of each pixel based on the actual quality index value of the top community in each sub-region of each ecosystem, and to grade the relative ecological environment quality index of each pixel to obtain several levels. The first quality index determination module is used to determine the quality index of each ecosystem based on several levels; The second quality index determination module is used to determine the overall quality index of the ecosystem based on the quality indices of each ecosystem. The third quality index determination module is used to obtain the pixel-level ecological environment quality index of the area to be evaluated based on the quality index of the integrated ecosystem. The evaluation module is used to obtain the ecological environment quality evaluation results of the administrative region corresponding to the region to be evaluated based on the pixel-level ecological environment quality index of the region to be evaluated.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the ecological environment quality assessment method according to any one of claims 1 to 7.

10. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the ecological environment quality assessment method according to any one of claims 1 to 7.

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