A rural environmental evaluation system based on county scale

Abstract

The invention relates to the field of environmental assessment systems, and in particular to a rural environmental assessment system based on a county scale, comprising: a data acquisition module for collecting environmental impact data information within the county scale; a subdomain division module for determining the divided subdomains according to industrial impact assessment values ​​and commercial characteristic area ratios; an indicator evaluation module for determining the county environmental assessment based on environmental impact parameters of corresponding subdomains, determining the extraction ratio of the sample number of positive environmental impact indicators to the sample number of negative environmental impact indicators according to subdomain type characteristic values, and determining whether the extraction number of negative environmental impact indicators meets a preset standard according to historical ecological stability characteristic values; and a neighborhood impact module for increasing the absolute value of the assigned value of the negative environmental impact indicator when determining that the neighborhood has a negative impact on the environment within the county according to the vegetation coverage rate within a preset boundary range, thereby improving the accuracy of the environmental assessment.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental assessment, and in particular to a rural environmental assessment system based on a county scale. Background Art

[0002] The rural environmental evaluation system should include dimensions such as ecological environment, ecological economy, ecological culture and ecological management. For example, natural environmental indicators such as vegetation coverage, water resources, acoustic environment quality, water quality, and atmospheric environment quality can be considered, as well as indicators closely related to agricultural production and lifestyle such as pollution control, soil environment, biological environment, and ecological agriculture.

[0003] In order to provide villagers with a better living environment, refined management should be carried out on various factors affecting the rural environment within the county, so as to achieve real-time accurate capture and feedback of environmental changes in various regions within the county. However, rural areas are large in area and have low population density, and the environmental condition evaluation and detection system has limitations.

[0004] China Patent Publication No.: CN118095946A, discloses a county rural human settlement environment quality evaluation calculation system, which belongs to the field of environmental quality evaluation technology, including: the calculation control module constructs the human settlement environment quality evaluation workflow, creates the index value, weight and quality evaluation calculation task, allocates the calculation node to the calculation task, and controls the flow of the calculation task; the quality evaluation index construction module establishes the evaluation index set representing the production quality, life consumption quality and ecological environment quality; the data acquisition and processing module performs data acquisition and processing based on each evaluation index set; the evaluation index calculation module calculates the evaluation index value and weight for each index in each evaluation index set; the quality index and obstacle factor calculation module calculates the comprehensive index of human settlement environment quality and the obstacle degree of per capita environmental quality level. It can be seen that the above technical scheme does not take into account the differentiated impact of different sub-domains on the environment, which leads to the problem of inaccurate environmental evaluation. Summary of the invention

[0005] To this end, the present invention provides a rural environmental evaluation system based on the county scale to overcome the problem that the prior art does not consider the differentiated impacts of different sub-domains on the environment, thus leading to inaccurate environmental evaluation.

[0006] To achieve the above object, the present invention provides a rural environment evaluation system based on county scale, comprising:

[0007] A data collection module is used to collect environmental impact data information within the county scale, and the environmental impact data information includes positive environmental impact indicator data, negative environmental impact indicator data and vegetation coverage rate of adjacent areas within the county;

[0008] A sub-domain division module, which is connected to the data acquisition module and is used to determine the sub-domains according to the industrial impact evaluation value and the proportion of commercial characteristic area;

[0009] An indicator evaluation module, which is connected to the data collection module and the subdomain division module respectively, and is used to determine the county environmental evaluation based on the environmental impact parameters of the corresponding subdomain, determine the sampling ratio of the number of samples of the positive environmental impact indicators and the number of samples of the negative environmental impact indicators according to the subdomain type characteristic value, and determine whether the number of samples of the negative environmental impact indicators meets the preset standard according to the historical ecological stability characteristic value; wherein the environmental impact parameters include the industrial impact evaluation value, the proportion of the commercial characteristic area, the positive environmental impact indicators and the negative environmental impact indicators;

[0010] The neighborhood impact module is connected to the data collection module and the index evaluation module respectively, and is used to increase the absolute value of the negative environmental impact index when judging that the neighborhood has a negative impact on the environment within the county according to the vegetation coverage rate within the preset boundary range.

[0011] Furthermore, the subdomain division module determines the divided subdomains according to the industrial impact evaluation value, wherein:

[0012] If the industrial impact assessment value is less than the preset industrial impact assessment value, the sub-domain division module determines the sub-domain to be divided according to the proportion of the commercial feature area;

[0013] If the industrial impact assessment value is greater than or equal to the preset industrial impact assessment value, the sub-domain division module is divided into a planting area and / or a fishery area and / or an animal husbandry area based on the agricultural characteristics and the preset distance away from the industrial area, and is recorded as the first division method;

[0014] The industrial impact assessment value is determined comprehensively through the water nitrogen content value, PM2.5 air pollution value and soil mercury content value.

[0015] Furthermore, the sub-domain division module determines the sub-domains to be divided according to the commercial feature area ratio, wherein:

[0016] If the commercial feature area ratio is less than the preset commercial feature threshold, the sub-domain division module divides the sub-domain into a planting area, a fishery area and / or an animal husbandry area based on the agricultural feature, and records it as a second division method;

[0017] If the commercial feature area ratio is greater than or equal to the preset commercial feature threshold, the sub-domain division module divides the area into a planting area, a fishery area and / or an animal husbandry area based on the agricultural feature division and the preset distance from the commercial area, and records it as the third division method;

[0018] The proportion of commercial characteristic area is the ratio of the commercial characteristic land area in the county to the total land area in the county.

[0019] Furthermore, the indicator evaluation module determines the county environmental evaluation based on the positive environmental impact indicator, the negative environmental impact indicator and the industrial impact evaluation value under the first division method;

[0020] Or, under the second classification method, the county environmental assessment is determined based on the positive environmental impact index, the negative environmental impact index and the proportion of the commercial characteristic area;

[0021] Or, under the third classification method, the county environmental assessment is determined based on the positive environmental impact indicators and the negative environmental impact indicators.

[0022] Furthermore, the indicator evaluation module determines that the extraction ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator is 3:2, or 1:1, or 2:3 according to the subdomain type characteristic value.

[0023] Furthermore, the indicator evaluation module determines whether the extracted number of the negative environmental impact indicators meets the preset standard according to the historical ecological stability characteristic value, wherein:

[0024] If the historical ecological stability characteristic value is less than the preset stability characteristic value, the indicator evaluation module determines that the extraction quantity does not meet the preset standard and increases the extraction quantity according to the difference between the historical ecological stability characteristic value and the preset ecological stability threshold value;

[0025] If the historical ecological stability characteristic value is greater than or equal to the preset stability characteristic value, the indicator evaluation module determines that the extraction quantity meets the preset standard and performs an environmental evaluation based on the environmental impact parameters under the corresponding division conditions.

[0026] Furthermore, the historical ecological stability characteristic value is the proportion of the number of species fluctuation frequency in the county that is less than the preset species fluctuation frequency within a preset time period, wherein the county species fluctuation frequency is the fluctuation frequency of the number of species, and species are the types of animals and plants in the county.

[0027] Furthermore, the indicator evaluation module is provided with several increasing methods for increasing the extraction quantity, and each quantity adjustment method increases the extraction quantity by a different amount.

[0028] Furthermore, the neighborhood impact module determines the negative impact of the neighborhood on the environment within the county according to the vegetation coverage within the preset boundary range, wherein:

[0029] If the vegetation coverage rate is less than the preset vegetation coverage rate, the neighborhood impact module determines that the neighborhood has a negative impact on the environment within the county and increases the absolute value of the negative environmental impact index according to the difference between the preset vegetation coverage rate and the vegetation coverage rate;

[0030] If the vegetation coverage rate is greater than or equal to the preset vegetation coverage rate, the neighborhood impact module determines that the neighborhood has no negative impact on the environment within the county and completes the environmental assessment based on the environmental impact parameters under the corresponding division conditions.

[0031] Furthermore, the increase in the absolute value of the assigned value of the negative environmental impact index is positively correlated with the vegetation coverage difference, wherein the vegetation coverage difference is the difference between the preset vegetation coverage rate and the vegetation coverage rate. Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention collects environmental data information within the county, determines the sub-domains to be divided based on the industrial impact evaluation value or the proportion of commercial characteristic area, and determines and adjusts the sample number of the positive environmental impact index and the sample number of the negative environmental impact index according to the sub-domain type characteristic value and the historical ecological stability characteristic value, and takes into account the negative impact of the neighborhood on the environment within the county, thereby ensuring the evaluation effect of the evaluation process and meeting the current agricultural development needs.

[0032] Furthermore, the present invention determines the subdomains to be divided according to the industrial impact evaluation values ​​through a subdomain division module, and considers the impact of industrial characteristics on the county environment when industrial characteristics exist, thereby improving the accuracy of rural environmental evaluation.

[0033] Furthermore, the present invention determines the sub-domains to be divided according to the proportion of the commercial feature area through a sub-domain division module, and divides the sub-domains according to agricultural characteristics while keeping away from the influence of commercial features on the environment within the county, thereby improving the evaluation effect.

[0034] Furthermore, the present invention sets an index evaluation module to determine the calculation method of the county environmental evaluation value based on the division of corresponding sub-domains, and adopts different environmental evaluation value calculation formulas, thereby realizing differentiated evaluation of the environment of each sub-domain.

[0035] Furthermore, the present invention determines the sampling ratio of the number of samples of the positive environmental impact indicators and the number of samples of the negative environmental impact indicators according to the sub-domain type characteristic values ​​through an indicator evaluation module, thereby improving the accuracy of rural environmental evaluation results.

[0036] Furthermore, the present invention optimizes the adaptability of the rural environment evaluation system by setting the subdomain type characteristic value.

[0037] Furthermore, when the present invention determines through an indicator evaluation module that the extraction quantity does not meet a preset standard according to the historical ecological stability characteristic value, the extraction quantity is increased, thereby realizing dynamic monitoring and evaluation of the environment within the county.

[0038] Furthermore, when the neighborhood impact module determines that the neighborhood has a negative impact on the environment within the county according to the vegetation coverage rate within a preset boundary range, the present invention increases the absolute value of the negative environmental impact index, thereby improving the applicability of the rural environment evaluation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a rural environment evaluation system based on a county scale according to an embodiment of the present invention;

[0040] Figure 2 A flowchart of determining the sub-domains divided according to the industrial impact evaluation value according to an embodiment of the present invention;

[0041] Figure 3 A flowchart of an embodiment of the present invention for determining whether the extracted number of negative environmental impact indicators meets a preset standard;

[0042] Figure 4 The present invention is a flow chart of determining the negative impact of a neighborhood on the environment within the county according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical data of the system of the present invention in the three months before this operation and the corresponding historical operation results. It can be understood by those skilled in the art that the system of the present invention can determine the above parameters for a single item by selecting the value with the highest proportion as the preset standard parameter according to the data distribution, using weighted summation to use the obtained value as the preset standard parameter, substituting each historical data into a specific formula and using the value obtained by the formula as the preset standard parameter or other selection methods, as long as the system of the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0045] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0046] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively a structural schematic diagram of a rural environment evaluation system based on a county scale according to an embodiment of the present invention; a flowchart of an embodiment of the present invention determining the sub-domains divided according to the industrial impact evaluation value; a flowchart of an embodiment of the present invention determining whether the number of extracted negative environmental impact indicators meets the preset standard; and a flowchart of an embodiment of the present invention determining the negative impact of a neighborhood on the environment within the county.

[0047] The embodiment of the present invention provides a rural environment evaluation system based on a county scale, including:

[0048] A data collection module is used to collect environmental impact data information within the county scale, and the environmental impact data information includes positive environmental impact indicator data, negative environmental impact indicator data and vegetation coverage rate of adjacent areas within the county;

[0049] A sub-domain division module, which is connected to the data acquisition module and is used to determine the sub-domains to be divided according to the industrial impact evaluation value and the proportion of commercial characteristic area;

[0050] An indicator evaluation module, which is connected to the data collection module and the subdomain division module respectively, and is used to determine the county environmental evaluation based on the environmental impact parameters of the corresponding subdomain, determine the sampling ratio of the number of samples of the positive environmental impact indicators and the number of samples of the negative environmental impact indicators according to the subdomain type characteristic value, and determine whether the number of samples of the negative environmental impact indicators meets the preset standard according to the historical ecological stability characteristic value; wherein the environmental impact parameters include the industrial impact evaluation value, the proportion of the commercial characteristic area, the positive environmental impact indicators and the negative environmental impact indicators;

[0051] The neighborhood impact module is connected to the data collection module and the index evaluation module respectively, and is used to increase the absolute value of the negative environmental impact index when judging that the neighborhood has a negative impact on the environment within the county according to the vegetation coverage rate within the preset boundary range.

[0052] In the embodiment of the present invention, the positive environmental impact indicator data include positive environmental impact indicators of planting industry, positive environmental impact indicators of animal husbandry, and positive environmental impact indicators of fishery, wherein the positive environmental impact indicators of planting industry include comprehensive utilization rate of crop straw, residual film recovery rate, water quality compliance rate of agricultural water functional areas, cultivated land retention rate, straw utilization rate, effective utilization coefficient of irrigation water, coverage rate of integrated prevention and control of pests and diseases, average per mu grain yield, proportion of eliminated highly toxic pesticide types, species richness, vegetation coverage rate, and comprehensive utilization rate of livestock and poultry manure; the positive environmental impact indicators of animal husbandry include feed Feed conversion rate, animal production efficiency, soil carbon storage, vegetation coverage, solar energy utilization, wildlife habitat protection rate, rainwater utilization, livestock and poultry disease incidence, ammonia nitrogen emission rate, species richness, livestock and poultry mortality rate and soil acidification rate; positive environmental impact indicators of fisheries include sustainable utilization rate of fish populations, proportion of sustainable aquaculture value-added, proportion of sediment quality, mechanized coverage of aquaculture, proportion of aquaculture, DO index, water pH value, species richness, vegetation coverage, survival rate of released species, chemical oxygen demand and heavy metal content in sediments;

[0053] The negative environmental indicators include negative environmental impact indicators of planting industry, negative environmental impact indicators of animal husbandry, and negative environmental impact indicators of fishery. Among them, the negative environmental impact indicators of planting industry include excessive nitrogen content in soil, excessive rate of irrigation water, eutrophication rate of water body, proportion of soil desertification, proportion of soil salinization, excessive rate of nitrogen oxide emission, excessive rate of soil heavy metal content, excessive rate of excessive use of chemical fertilizers, excessive rate of excessive use of pesticides, and excessive rate of excessive use of plastic products; the negative environmental impact indicators of animal husbandry include excessive rate of antibiotic and drug residues, excessive feed production consumption, excessive The negative environmental impact indicators of fisheries include water pollution rate, excessive content of harmful substances in sediments, excessive sulfur dioxide in water, excessive veterinary drug residues in aquatic products, methane content in the air, excessive nitrogen and phosphorus in fishery waters, excessive total phosphorus emissions in aquaculture, excessive emissions of aquaculture effluents and excessive heavy metals in water.

[0054] Specifically, the subdomain division module determines the divided subdomains according to the industrial impact evaluation value, wherein:

[0055] If the industrial impact assessment value is less than the preset industrial impact assessment value of 1.89, the sub-domain division module determines the sub-domain to be divided according to the proportion of commercial feature area;

[0056] If the industrial impact assessment value is greater than or equal to the preset industrial impact assessment value, the sub-domain division module divides it into a planting area and / or a fishery area and / or an animal husbandry area based on the agricultural characteristics and based on a preset distance from the industrial area, and it is recorded as the first division method.

[0057] Specifically, the industrial impact assessment value is calculated by the following formula:

[0058]

[0059] Among them, M is the industrial impact assessment value; D is the nitrogen content in water; B is the PM2.5 air pollution value; C is the mercury content in soil; D b To preset the nitrogen threshold of water body, set D b =0.5 mg / L; B b To preset the PM2.5 air pollution threshold, set B b =35 μg / m 3 ; C b To preset the soil mercury content threshold, set C b =3.4 mg / kg.

[0060] In the embodiment of the present invention, the preset distance away from the industrial area is set to 1000m.

[0061] Specifically, the sub-domain division module determines the sub-domains to be divided according to the commercial feature area ratio, wherein:

[0062] If the commercial feature area ratio is less than the preset commercial feature threshold of 3.67, the sub-domain division module divides the sub-domain into a planting area and / or a fishery area and / or an animal husbandry area based on the agricultural feature, and records it as the second division method;

[0063] If the commercial feature area ratio is greater than or equal to the preset commercial feature threshold, the sub-domain division module divides it into a planting area and / or a fishery area and / or an animal husbandry area based on the agricultural feature division and a preset distance of 600m away from the commercial area, and it is recorded as the third division method;

[0064] The proportion of commercial characteristic area is the ratio of the commercial characteristic land area in the county to the total land area in the county.

[0065] In the embodiment of the present invention, the agricultural characteristics include the annual income proportion of planting industry, the annual income proportion of fishery industry, and the annual income proportion of animal husbandry industry in each sub-domain;

[0066] In the embodiment of the present invention, the maximum proportion of annual income from crop production, annual income from fishery, and annual income from animal husbandry in each sub-domain is selected, and the sub-domain is divided into crop production area and / or fishery area and / or animal husbandry area according to the industry with the maximum proportion.

[0067] In the embodiment of the present invention, the commercial features include large shopping malls, small supermarkets, shops, markets and corporate units.

[0068] Specifically, under the first division method, the index evaluation module determines the county environmental evaluation based on the positive environmental impact index, the negative environmental impact index and the industrial impact evaluation value;

[0069] Or, under the second classification method, the county environmental assessment is determined based on the positive environmental impact index, the negative environmental impact index and the proportion of the commercial characteristic area;

[0070] Or, under the third classification method, the county environmental assessment is determined based on the positive environmental impact indicators and the negative environmental impact indicators.

[0071] In an embodiment of the present invention, each positive environmental impact indicator is assigned a value of 1, and each negative environmental impact indicator is assigned a value of -1; the total number of samples of the positive environmental impact indicators and the negative environmental impact indicators is set to a number, preferably, the total number of samples is set to 50, and the method of extracting samples can be simple random sampling or stratified sampling, without specific limitation, as long as the indicator sample extraction requirements are met.

[0072] Specifically, the indicator evaluation module determines the extraction ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator according to the subdomain type characteristic value, wherein:

[0073] If the subdomain type characteristic value is less than the first preset subdomain type characteristic value of 0.27, the indicator evaluation module determines that the sampling ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator is 3:2;

[0074] If the subdomain type characteristic value is greater than or equal to the first preset subdomain type characteristic value and less than the second preset subdomain type characteristic value 0.41, the indicator evaluation module determines that the sampling ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator is 1:1;

[0075] If the subdomain type characteristic value is greater than or equal to the second preset subdomain type characteristic value 0.48, the indicator evaluation module determines that the sampling ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator is 2:3;

[0076] The subdomain type characteristic value is the ratio of the number of subdomain types in the county to the total number of four preset subdomain types.

[0077] Specifically, the indicator evaluation module determines whether the number of negative environmental impact indicators extracted meets the preset standard based on the historical ecological stability characteristic value, wherein:

[0078] If the historical ecological stability characteristic value is less than the preset stability characteristic value of 0.74, the indicator evaluation module determines that the extraction quantity does not meet the preset standard and increases the extraction quantity according to the difference between the historical ecological stability characteristic value and the preset ecological stability threshold;

[0079] If the historical ecological stability characteristic value is greater than or equal to the preset stability characteristic value, the indicator evaluation module determines that the extraction quantity meets the preset standard and continues to perform environmental evaluation based on the environmental impact parameters under the corresponding division conditions;

[0080] Specifically, the historical ecological stability characteristic value is the proportion of species fluctuation frequency in the county within a preset time period of 3 months that is less than the preset species fluctuation frequency of 6 times / month, where the species fluctuation frequency in the county is the fluctuation frequency of the number of species, and species refers to the types of animals and plants in the county.

[0081] Specifically, the index evaluation module is provided with several increasing methods for increasing the number of extractions, wherein:

[0082] If the ecological stability difference is less than the first preset ecological stability difference of 0.11, the indicator evaluation module uses the first preset indicator quantity adjustment coefficient of 1.15 to increase the extraction quantity, and the increased extraction quantity is an integer rounded up;

[0083] If the ecological stability difference is greater than or equal to the first preset ecological stability difference and less than the second preset ecological stability difference of 0.21, the indicator evaluation module uses the second preset indicator quantity adjustment coefficient of 1.45 to increase the extraction quantity, and the increased extraction quantity value is an integer rounded up;

[0084] If the ecological stability difference is greater than or equal to the second preset ecological stability difference, the indicator evaluation module uses the third preset indicator quantity adjustment coefficient 1.76 to increase the extraction quantity, and the increased extraction quantity value is an integer rounded up.

[0085] Specifically, the neighborhood impact module is based on a preset boundary range of 400m 2 The vegetation coverage rate within the county determines the negative impact of the neighborhood on the environment within the county, where:

[0086] If the vegetation coverage rate is less than the preset vegetation coverage rate of 0.54, the neighborhood impact module determines that the neighborhood has a negative impact on the environment within the county and increases the absolute value of the negative environmental impact index according to the difference between the preset vegetation coverage rate and the vegetation coverage rate;

[0087] If the vegetation coverage rate is greater than or equal to the preset vegetation coverage rate, the neighborhood impact module determines that the neighborhood has no negative impact on the environment within the county and completes the environmental assessment based on the environmental impact parameters under the corresponding division conditions;

[0088] The vegetation coverage rate is obtained through the data acquisition module.

[0089] Specifically, the increase in the absolute value of the assigned value of the negative environmental impact index is positively correlated with the vegetation coverage difference, wherein the positive correlation is, for example, a linear positive correlation or a nonlinear positive correlation, and the linear slope of the linear positive correlation is not specifically limited. It can be understood that the larger the vegetation coverage difference is, the greater the increase in the absolute value of the assigned value of the negative environmental impact index is; the vegetation coverage difference is the difference between the preset vegetation coverage rate and the vegetation coverage rate.

[0090] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments described in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rural environment evaluation system based on county scale, characterized by: include: A data collection module is used to collect environmental impact data information within the county scale, and the environmental impact data information includes positive environmental impact indicator data, negative environmental impact indicator data and vegetation coverage rate of adjacent areas within the county; A sub-domain division module, which is connected to the data acquisition module and is used to determine the sub-domains to be divided according to the industrial impact evaluation value and the proportion of commercial characteristic area; An indicator evaluation module, which is connected to the data collection module and the subdomain division module respectively, and is used to determine the county environmental evaluation based on the environmental impact parameters of the corresponding subdomain, determine the sampling ratio of the number of samples of the positive environmental impact indicators and the number of samples of the negative environmental impact indicators according to the subdomain type characteristic value, and determine whether the number of samples of the negative environmental impact indicators meets the preset standard according to the historical ecological stability characteristic value; wherein the environmental impact parameters include the industrial impact evaluation value, the proportion of the commercial characteristic area, the positive environmental impact indicators and the negative environmental impact indicators; A neighborhood impact module, which is connected to the data collection module and the index evaluation module respectively, and is used to increase the absolute value of the negative environmental impact index when judging that the neighborhood has a negative impact on the environment within the county according to the vegetation coverage rate within the preset boundary range; If the industrial impact assessment value is less than the preset industrial impact assessment value, the sub-domain division module determines the sub-domain to be divided according to the proportion of commercial feature area; If the industrial impact assessment value is greater than or equal to the preset industrial impact assessment value, the sub-domain division module divides the sub-domain into a planting area and / or a fishery area and / or an animal husbandry area based on the agricultural characteristics and the preset distance from the industrial area, and records it as the first division method; The industrial impact assessment value is determined comprehensively through the nitrogen content value of water bodies, PM2.5 air pollution value and soil mercury content value; If the commercial feature area ratio is less than the preset commercial feature threshold, the sub-domain division module divides the sub-domain into a planting area, a fishery area and / or an animal husbandry area based on the agricultural feature, and records it as a second division method; If the commercial feature area ratio is greater than or equal to the preset commercial feature threshold, the sub-domain division module divides the area into a planting area, a fishery area and / or an animal husbandry area based on the agricultural feature division and the preset distance from the commercial area, and records it as the third division method; The commercial characteristic area ratio is the ratio of the commercial characteristic land area in the county to the total land area in the county; The indicator evaluation module determines the county environmental evaluation based on the positive environmental impact indicator, the negative environmental impact indicator and the industrial impact evaluation value under the first division method; Or, under the second classification method, the county environmental assessment is determined based on the positive environmental impact index, the negative environmental impact index and the proportion of the commercial characteristic area; Or, under the third classification method, the county environmental assessment is determined based on the positive environmental impact indicators and the negative environmental impact indicators; The indicator evaluation module determines whether the extracted number of the negative environmental impact indicators meets the preset standard according to the historical ecological stability characteristic value, wherein: If the historical ecological stability characteristic value is less than the preset stability characteristic value, the indicator evaluation module determines that the extraction quantity does not meet the preset standard and increases the extraction quantity according to the difference between the historical ecological stability characteristic value and the preset ecological stability threshold value; If the historical ecological stability characteristic value is greater than or equal to the preset stability characteristic value, the indicator evaluation module determines that the extraction quantity meets the preset standard and performs an environmental evaluation based on the environmental impact parameters under the corresponding division conditions; The historical ecological stability characteristic value is the proportion of the number of county species whose fluctuation frequency is less than the preset species fluctuation frequency within a preset time period, wherein the county species fluctuation frequency is the fluctuation frequency of the number of species, and the species is the type of animals and plants in the county; The subdomain type characteristic value is the ratio of the number of subdomain types in the county to the total number of preset subdomain types.

2. The rural environment evaluation system based on the county scale according to claim 1 is characterized in that: The indicator evaluation module determines that the sampling ratio of the number of samples of the positive environmental impact indicator and the number of samples of the negative environmental impact indicator is 3:2, or 1:1, or 2:3 according to the subdomain type characteristic value.

3. The rural environment evaluation system based on county scale according to claim 2 is characterized in that: The index evaluation module is provided with several increasing methods for increasing the extraction quantity, and each quantity adjustment method increases the extraction quantity by a different amount.

4. The rural environment evaluation system based on county scale according to claim 3 is characterized in that: The neighborhood impact module determines the negative impact of the neighborhood on the environment within the county according to the vegetation coverage rate within the preset boundary range, wherein: If the vegetation coverage rate is less than the preset vegetation coverage rate, the neighborhood impact module determines that the neighborhood has a negative impact on the environment within the county and increases the absolute value of the negative environmental impact index according to the difference between the preset vegetation coverage rate and the vegetation coverage rate; If the vegetation coverage rate is greater than or equal to the preset vegetation coverage rate, the neighborhood impact module determines that the neighborhood has no negative impact on the environment within the county and completes the environmental assessment based on the environmental impact parameters under the corresponding division conditions.

5. The rural environment evaluation system based on county scale according to claim 4 is characterized in that: The increase in the absolute value of the assigned value of the negative environmental impact index is positively correlated with the vegetation coverage difference, wherein the vegetation coverage difference is the difference between the preset vegetation coverage rate and the vegetation coverage rate.

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