Soil pollution monitoring and analyzing system and method

Abstract

The invention discloses a soil pollution monitoring and analyzing system and method, and relates to the technical field of soil pollution monitoring, pollution monitoring is carried out on a soil pollution area in a plastic film covering mode, and in the plastic film covering mode, a modified polyethylene film with a micropore and microchannel structure is manufactured and covered, so that the soil pollution is monitored. The soil moisture evaporation control is facilitated, meanwhile, the pollutant monitoring sensitivity is improved, moisture and gas in the soil can enter and exit in a controllable mode through the micropore and micro-channel design, monitoring data collection is promoted, the monitoring effectiveness and accuracy are improved, and in the pollution degree analysis process, the monitoring accuracy is improved. According to the method, the diffusion index and the toxicity index of the pollutants are calculated, and then the pollution evaluation value is scientifically calculated, so that visual indexes for pollution monitoring are provided, pollution conditions of different soil areas can be transversely compared, and scientific management of the ecological environment is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of soil pollution monitoring, and in particular to a soil pollution monitoring and analysis system and method. Background Art

[0002] Traditional soil pollution monitoring methods usually rely on sampling and laboratory analysis. These methods have disadvantages such as uneven distribution of sampling points, long analysis cycle and high cost, which lead to the inability to timely assess the pollution status and delayed response. Since soil can accumulate pollutants over a long period of time, it is necessary to develop more efficient, rapid and accurate monitoring technologies and methods to cope with the growing risk of soil pollution.

[0003] Prior art, such as the invention patent application with announcement number CN118780468A, discloses an intelligent soil pollutant monitoring method, system and equipment, which collects collection instructions for collecting crop properties in the monitored soil area; collects target pollutants and metadata of the target pollutants in the monitored soil area; diagnoses whether the target pollutants are found in the candidate maintenance log of the monitored soil area; if the target pollutants are found in the candidate maintenance log of the monitored soil area, diagnoses whether the metadata is found in the candidate maintenance log; if the metadata is found in the candidate maintenance log, determines the target pollutants and the crop properties represented by the metadata, and obtains the crop properties of the monitored soil area; disassembles the target maintenance log into multiple candidate maintenance logs according to a preset disassembly method; diagnoses whether the target pollutants are found in the candidate maintenance log of the monitored soil area.

[0004] There are at least the following technical problems with the above scheme: 1. The above scheme lacks a clear division and screening mechanism for sample areas within designated soil areas, which will result in an incomplete monitoring scope and an inability to effectively capture pollutants that may exist in the soil, causing certain high-risk areas to fail to be monitored, thereby affecting the accuracy and comprehensiveness of pollution assessments, as well as a lack of comprehensive assessment of the physical and chemical properties of the soil, which will lead to incorrect judgments or estimates of the spread and effects of pollutants, reducing the reliability of monitoring results.

[0005] 2. The above scheme lacks comprehensive collection and analysis methods for various pollution parameters. The lack of analysis of the diffusion rate of pollutants will lead to an inability to fully understand the behavior of pollutants in the soil, affecting the assessment of potential soil hazards. The diffusion rate of pollutants is directly related to their migration dynamics in the soil, thereby affecting the real-time judgment of the scope and severity of pollution. The lack of analysis combining the diffusion rate and toxicity of pollutants will affect the prediction of pollution trends and the formulation of risk management strategies, and will also reduce the ability to respond to and handle sudden pollution incidents. Summary of the invention

[0006] The purpose of the present invention is to provide a soil pollution monitoring and analysis system and method, which solves the problems existing in the background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a soil pollution monitoring and analysis system, including: a pollution monitoring preparation module, which is used to screen out sample areas for pollution monitoring in a designated soil area, and prepare each sample area for pollution monitoring by covering it with a mulch film.

[0008] The pollution parameter collection module is used to obtain the corresponding pollution parameters of each sample area in the specified soil area after the pollution monitoring preparation of each sample area in the specified soil area is completed. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters.

[0009] The pollution degree analysis module is used to calculate the pollutant diffusion index and pollution source toxicity index corresponding to each sample area in the specified soil area according to the corresponding pollution parameters of each sample area, thereby evaluating the pollution situation corresponding to the specified soil area.

[0010] The pollution degree visualization module is used to display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

[0011] Preferably, the pollution monitoring preparation for each sample area is carried out by covering the ground with mulch, and the specific process is as follows: S1. The corresponding soil state in the designated soil area is obtained by GIS technology, and combined with the historical pollution information corresponding to the designated soil area, the corresponding potential risk areas in the designated soil area are obtained, and the potential risk areas are the sample areas for pollution monitoring in the designated soil area.

[0012] S2. Use weeding tools and tillage tools to remove weeds and loosen the soil in each sample area. Use a level ruler to measure whether the soil in each sample area is at the same level. When the soil in a sample area is not at the same level, use a shovel and process it through filling and digging until the soil in the sample area is level. When the soil in each sample area is level, use modified polyethylene film to cover the soil in each sample area.

[0013] S3. A mold with a micropore and microchannel structure is manufactured through a designated process, and the modified polyethylene material is processed through an extruder. During the extrusion process, the processed modified polyethylene material is passed through the mold to obtain a modified polyethylene film with a micropore and microchannel structure. After the modified polyethylene film with a micropore and microchannel structure passes the quality inspection, the modified polyethylene film is cut according to the area of ​​each sample area, and each cut modified polyethylene film is evenly covered on the surface of the corresponding sample area, and the edge of each modified polyethylene film is buried in the soil, thereby realizing the pollution monitoring preparation of each sample area.

[0014] In a second aspect, the present invention provides a soil pollution monitoring and analysis method, including: step one, pollution monitoring preparation: screening out sample areas for pollution monitoring in a designated soil area, and preparing each sample area for pollution monitoring by covering it with a mulch film.

[0015] Step 2: Pollution parameter collection: After the pollution monitoring preparation is completed for each sample area in the designated soil area, the corresponding pollution parameters of each sample area in the designated soil area are obtained. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters.

[0016] Step 3: Pollution degree analysis: Based on the pollution parameters corresponding to each sample area in the specified soil area, the pollutant diffusion index and pollution source toxicity index corresponding to each sample area are calculated respectively, thereby evaluating the pollution situation corresponding to the specified soil area.

[0017] Step 4: Visualization of pollution degree: Display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

[0018] The beneficial effects of the present invention are as follows: 1. A soil pollution monitoring and analysis system and method provided by the present invention, in the process of pollution monitoring preparation, obtains soil status information in a designated soil area by using GIS technology, and identifies various potential risk areas in combination with historical pollution information, which is conducive to ensuring that the monitoring target is targeted, thereby improving monitoring efficiency and avoiding waste of resources. In the process of sample area preparation, weeding tools and tillage tools are used to remove weeds and loosen the soil, and then a level ruler is used to ensure that the soil is at the same level, which effectively improves the physical state of the soil, enhances the monitoring ability of the soil, helps to obtain more accurate pollution monitoring results, and reduces the interference of the external environment on monitoring.

[0019] 2. In the implementation of the ground film covering method in the embodiment of the present invention, a modified polyethylene film with micropores and microchannel structures is prepared and covered, which is beneficial to controlling the evaporation of soil moisture and also increases the sensitivity of pollutant monitoring. The micropore and microchannel design can allow moisture and gas in the soil to enter and exit in a controllable manner, promote the collection of monitoring data, and improve the effectiveness and accuracy of monitoring.

[0020] 3. In the pollution degree analysis process, the embodiment of the present invention calculates the diffusion index and toxicity index of the pollutant based on the obtained pollution parameters, such as the pollutant release rate parameter and the pollutant toxicity parameter, and then scientifically calculates the pollution assessment value, which clearly indicates the pollution degree and not only provides an intuitive indicator for pollution monitoring, but also enables the pollution conditions of different soil areas to be compared horizontally, which helps the scientific management of the ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the system structure connection of the present invention.

[0023] Figure 2 It is a schematic flow chart of the implementation steps of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 As shown, the present invention provides a soil pollution monitoring and analysis system, which includes: a pollution monitoring preparation module, a pollution parameter collection module, a pollution degree analysis module, a pollution degree visualization module and a database.

[0026] The pollution monitoring preparation module is connected to the pollution parameter collection module, the pollution parameter collection module is respectively connected to the pollution degree analysis module and the database, and the pollution degree analysis module is respectively connected to the pollution degree visualization module and the database.

[0027] The pollution monitoring preparation module is used to screen out the sample areas for pollution monitoring in the designated soil area, and prepare the pollution monitoring for each sample area by covering it with mulch.

[0028] In a specific embodiment, the pollution monitoring preparation for each sample area is carried out by covering the ground with mulch, and the specific process is as follows: S1. The corresponding soil state in the designated soil area is obtained by GIS technology, and the corresponding potential risk areas in the designated soil area are obtained by combining the historical pollution information corresponding to the designated soil area. The potential risk areas are the sample areas for pollution monitoring in the designated soil area.

[0029] S2. Use weeding tools and tillage tools to remove weeds and loosen the soil in each sample area. Use a level ruler to measure whether the soil in each sample area is at the same level. When the soil in a sample area is not at the same level, use a shovel and process it through filling and digging until the soil in the sample area is level. When the soil in each sample area is level, use modified polyethylene film to cover the soil in each sample area.

[0030] S3. A mold with a micropore and microchannel structure is manufactured through a designated process, and the modified polyethylene material is processed through an extruder. During the extrusion process, the processed modified polyethylene material is passed through the mold to obtain a modified polyethylene film with a micropore and microchannel structure. After the modified polyethylene film with a micropore and microchannel structure passes the quality inspection, the modified polyethylene film is cut according to the area of ​​each sample area, and each cut modified polyethylene film is evenly covered on the surface of the corresponding sample area, and the edge of each modified polyethylene film is buried in the soil, thereby realizing the pollution monitoring preparation of each sample area.

[0031] It should be noted that after obtaining the modified polyethylene film with micropore and microchannel structure, the molded polyethylene film is subjected to quality inspection, including inspection of micropore size, channel shape, film thickness and other indicators to ensure that it meets the design requirements. The inspection includes air permeability, water vapor permeability test and mechanical property test of the film to ensure that the film can effectively play the expected function in actual application. The designated processes include die-casting and 3D printing, etc. The farming tools include but are not limited to hoes, plows and rotary tillers, the weeding tools include but are not limited to herbicides and manual weeding tools, the soil state includes but is not limited to soil moisture, vegetation area and soil temperature, etc. The historical pollution information includes pollution event records and pollutant types.

[0032] In a specific embodiment, the pollutant release rate parameters include relative humidity, water vapor flow rate and degradation rate constant, and the pollutant toxicity parameters include total volatile organic pollutant concentration and water vapor pH value.

[0033] The pollution parameter collection module is used to obtain the corresponding pollution parameters of each sample area in the specified soil area after the pollution monitoring preparation of each sample area in the specified soil area is completed. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters.

[0034] In a specific embodiment, the method of obtaining the pollution diffusion parameters corresponding to each sample area in the designated soil area is as follows: placing a micro-capacitive humidity sensor at the micropores of the modified polyethylene film corresponding to each sample area, thereby detecting and obtaining the relative humidity corresponding to each sample area in the designated soil area; setting a flow meter at the outlet of the microchannel, setting a water vapor flow measurement time period, thereby obtaining the water vapor flow corresponding to each sample area in the water vapor flow measurement time period; using an immunoassay kit to detect soil pollutants in the designated soil area, thereby obtaining the types of pollutants contained in the designated soil area; simulating the soil environment in the designated soil area in the laboratory, adding the types of pollutants contained in the designated soil area to the simulated soil environment, detecting the pollutant concentration in the simulated soil environment in each set collection time period, and using a fitting model to obtain the degradation rate constant of the pollutants in the simulated soil environment, the degradation rate constant of the pollutants in the simulated soil environment is the degradation rate constant corresponding to each sample area in the designated soil area.

[0035] It should be noted that relative humidity refers to the ratio between the water vapor pressure in the air inside the film material and the maximum water vapor pressure that the air inside the film can accommodate at that temperature, expressed as a percentage. Based on historical pollution information and the industrial environment near the designated soil, the types of pollutants contained in the designated soil are preliminarily determined, and the preliminarily determined types of pollutants are targetedly tested and confirmed through immunoassay kits to obtain the types of pollutants contained in the designated soil area. The immunoassay kit contains antibodies against specific pollutants. When the target pollutants in the soil sample come into contact with the antibodies, a specific antigen-antibody reaction will occur. The fitting model is a prior art and will not be elaborated on here.

[0036] In a specific embodiment, the toxicity parameters of pollutants corresponding to each sample area in the specified soil area are obtained by collecting water vapor generated in each sample area from the outlet of the microchannel, using a pollutant concentration sensor to detect the concentration of various pollutants contained in the water vapor generated in each sample area, and accumulating the concentration of various pollutants to obtain the result, which is the concentration of total volatile organic pollutants corresponding to each sample area in the specified soil area, and using a pH meter to detect the pH value of the water vapor generated in each sample area.

[0037] In the implementation of the ground film covering method in the embodiment of the present invention, a modified polyethylene film with a micropore and microchannel structure is prepared and covered, which is beneficial to controlling the evaporation of soil moisture and also increases the sensitivity of pollutant monitoring. The micropore and microchannel design can allow moisture and gas in the soil to enter and exit in a controllable manner, promote the collection of monitoring data, and improve the effectiveness and accuracy of monitoring.

[0038] The pollution degree analysis module is used to calculate the pollutant diffusion index and pollution source toxicity index corresponding to each sample area in the specified soil area according to the corresponding pollution parameters of each sample area, thereby evaluating the pollution situation corresponding to the specified soil area.

[0039] In a specific embodiment, the pollutant diffusion index corresponding to each sample area is calculated, and the specific calculation process is as follows: the standard control pollutant release rate parameters corresponding to the specified soil area are obtained from the database, and the standard control pollutant release rate parameters include standard control relative humidity, standard control water vapor flow rate and standard control degradation rate constant.

[0040] By calculating the formula , and obtain the corresponding pollutant diffusion index in each sample area , is the number corresponding to each sample area, , is the total number corresponding to the sample area, is a positive integer, where , , Respectively expressed as The relative humidity, water vapor flow rate, and degradation rate constant corresponding to each sample area are , , They are respectively expressed as standard control relative humidity, standard control water vapor flow rate, and standard control degradation rate constant. , , They are the weight factor corresponding to the set relative humidity, the weight factor corresponding to the water vapor flow rate, and the weight factor corresponding to the degradation rate constant.

[0041] It should be noted that , , The values ​​of are all greater than and less than Relative humidity directly affects the moisture state in the soil. High relative humidity means more moisture in the soil, which is conducive to dissolving pollutants and promoting their migration. Wetter soil will reduce the porosity of the soil, making molecular diffusion easier.

[0042] It should also be noted that historical pollution information corresponding to the soil of the same specified soil type is obtained from the database, and the historical pollution information includes each historical relative humidity weight factor value, each historical water vapor flow weight factor value and each historical degradation rate constant weight factor value. The historical relative humidity weight factor value, each historical water vapor flow weight factor value and each historical degradation rate constant weight factor value are averaged respectively, and the result obtained is the weight factor corresponding to the set relative humidity, the weight factor corresponding to the water vapor flow and the weight factor corresponding to the degradation rate constant.

[0043] It should also be noted that relative humidity will affect the release of pollutants in the soil. For example, high relative humidity will make pollutants in the soil more volatile or migrate with the movement of water vapor. In a high humidity environment, volatile organic pollutants will desorb from the surface of soil particles into the air, accelerating the diffusion rate. Water vapor flow is directly related to the migration of pollutants. For example, a large water vapor flow will carry more pollutants for diffusion. For example, water flows carry away sediment. The flow of water vapor will promote the exchange of pollutants in the soil and between the soil and the atmosphere, thereby increasing the diffusion range of pollutants. The degradation rate constant reflects the natural degradation rate of pollutants in the soil. If the degradation rate constant is large, it means that the pollutants have a faster natural decomposition process in the soil, and the accumulation of pollutants in the soil will be relatively small. The higher the pollutant diffusion index, the wider the diffusion range of pollutants in the soil, and the easier it is to pollute a larger area of ​​soil.

[0044] In a specific embodiment, the calculation of the pollution source toxicity index corresponding to each sample area is performed as follows: the standard control pollutant toxicity parameters corresponding to the specified soil area are obtained from the database, and the standard control pollutant toxicity parameters include the concentration of the standard control total volatile organic pollutants and the standard control water vapor pH value.

[0045] By calculating the formula , and obtain the pollution source toxicity index corresponding to each sample area ,in , Respectively expressed as The concentration of total volatile organic pollutants and water vapor pH value corresponding to each sample area, , They are respectively expressed as the concentration of total volatile organic pollutants of the standard control and the pH value of water vapor of the standard control. , They are respectively the weight factor corresponding to the set total volatile organic pollutant concentration and the weight factor corresponding to the water vapor pH value.

[0046] It should be noted that , The values ​​of are all greater than and less than , , The setting process and , , The setting process is the same as , so I will not go into details here.

[0047] It should also be noted that high concentrations of volatile organic pollutants and extreme water vapor pH values ​​will increase the toxicity of pollutants, such as when the pH value is too high or too low, because the concentration of total volatile organic pollutants and the water vapor pH value can significantly increase the activity, mobility and bioavailability of pollutants.

[0048] It should also be noted that the concentration of total volatile organic pollutants is an important indicator for measuring the content of organic pollutants in the soil. For example, high concentrations of volatile organic pollutants will inhibit the activity of beneficial microorganisms in the soil, and higher concentrations mean that there are more toxic and harmful substances in the soil. Volatile organic pollutants will harm the microbial community and plant growth in the soil. The pH value of water vapor will affect the chemical form and toxicity of pollutants. For example, a certain metal pollutant is more easily dissolved in an acidic water vapor environment, thereby increasing its bioavailability and toxicity. The higher the pollution source toxicity index, the more toxic the soil pollution source itself is, and the greater the harm to the soil ecosystem.

[0049] In a specific embodiment, the pollution situation corresponding to the designated soil area is evaluated, and the specific evaluation process is as follows: according to the pollutant diffusion index and the pollution source toxicity index corresponding to each sample area, the pollution assessment value corresponding to the designated soil area is calculated, and the pollution assessment value includes the values ​​of -1 and 1. If the pollution assessment value corresponding to the designated soil area is -1, it indicates that the pollution situation in the designated soil area is slightly polluted. If the pollution assessment value corresponding to the designated soil area is 1, it indicates that the pollution situation in the designated soil area is severely polluted.

[0050] In a specific embodiment, the calculation obtains the pollution assessment value corresponding to the specified soil area, and the specific process is as follows: Substitute the pollutant diffusion index and pollution source toxicity index corresponding to each sample area into the soil pollution assessment expression: , get the pollution assessment value corresponding to the specified soil area ,in and They are the weight factors corresponding to the set pollutant diffusion index and the pollution source toxicity index, respectively. Expressed as the standard pollution assessment value threshold.

[0051] It should be noted that and The value is greater than and less than , and The setting process and , , The setting process is the same as that of It is used as a basis for assessing the contamination situation corresponding to a given soil area, e.g. The value of is 20. When the value is 15, it indicates that the pollution situation of the specified soil area is slightly polluted.

[0052] In the pollution degree analysis process, the embodiment of the present invention calculates the diffusion index and toxicity index of the pollutant based on the acquired pollution parameters, such as the pollutant release rate parameter and the pollutant toxicity parameter, and then scientifically calculates the pollution assessment value, which clearly indicates the pollution degree and not only provides an intuitive indicator for pollution monitoring, but also enables the pollution conditions of different soil areas to be compared horizontally, thereby facilitating the scientific management of the ecological environment.

[0053] The pollution degree visualization module is used to display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

[0054] It should be noted that the pollution conditions of the designated soil area and the pollution conditions of each sample area within the designated soil area are presented in the form of a color gradient distribution map, and different colors represent different degrees of pollution levels.

[0055] A database is used to store standard control pollutant release rate parameters corresponding to a specified soil area, the standard control pollutant release rate parameters include standard control relative humidity, standard control water vapor flow and standard control degradation rate constant, standard control pollutant toxicity parameters corresponding to a specified soil area, the standard control pollutant toxicity parameters include standard control total volatile organic pollutant concentrations and standard control water vapor pH values, and historical pollution information corresponding to soils of the same type as the specified soil, the historical pollution information includes weight factor values ​​for each historical relative humidity, each historical water vapor flow weight factor value and each historical degradation rate constant weight factor value.

[0056] See also Figure 2 As shown, a soil pollution monitoring and analysis method includes the following steps: Step 1, pollution monitoring preparation: screen out each sample area for pollution monitoring in a designated soil area, and prepare each sample area for pollution monitoring by covering it with a mulch film.

[0057] Step 2: Pollution parameter collection: After the pollution monitoring preparation is completed for each sample area in the designated soil area, the corresponding pollution parameters of each sample area in the designated soil area are obtained. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters.

[0058] Step 3: Pollution degree analysis: Based on the pollution parameters corresponding to each sample area in the specified soil area, the pollutant diffusion index and pollution source toxicity index corresponding to each sample area are calculated respectively, thereby evaluating the pollution situation corresponding to the specified soil area.

[0059] Step 4: Visualization of pollution degree: Display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

[0060] The present invention provides a soil pollution monitoring and analysis system and method. In the process of pollution monitoring preparation, GIS technology is used to obtain soil status information in a specified soil area, and historical pollution information is combined to identify various potential risk areas, which is conducive to ensuring that the monitoring target is targeted, thereby improving monitoring efficiency and avoiding waste of resources. In the process of sample area preparation, weeding tools and tillage tools are used to remove weeds and loosen the soil, and then a level ruler is used to ensure that the soil is at the same level, which effectively improves the physical state of the soil, enhances the monitoring ability of the soil, helps to obtain more accurate pollution monitoring results, and reduces the interference of the external environment on monitoring.

[0061] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they shall all fall within the protection scope of the present invention.

Claims

1. A soil pollution monitoring and analysis system, characterized in that: include: The pollution monitoring preparation module is used to screen out the sample areas for pollution monitoring in the designated soil area and prepare each sample area for pollution monitoring by covering it with mulch film; A pollution parameter collection module is used to obtain the corresponding pollution parameters of each sample area in the designated soil area after the pollution monitoring preparation of each sample area in the designated soil area is completed. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters; The pollution degree analysis module is used to calculate the pollutant diffusion index and pollution source toxicity index corresponding to each sample area in the designated soil area according to the pollution parameters corresponding to each sample area, thereby evaluating the pollution situation corresponding to the designated soil area; The pollution degree visualization module is used to display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

2. A soil pollution monitoring and analysis system according to claim 1, characterized in that: The pollution monitoring preparation of each sample area is carried out by covering the ground with mulch, and the specific process is as follows: S1. Obtain the soil state corresponding to the designated soil area through GIS technology, and combine the historical pollution information corresponding to the designated soil area to obtain the corresponding potential risk areas in the designated soil area. The potential risk areas are the sample areas for pollution monitoring in the designated soil area; S2. Use weeding tools and tillage tools to remove weeds and loosen the soil in each sample area, use a level ruler to measure whether the soil in each sample area is at the same level, and when the soil in a certain sample area is not at the same level, use a shovel and fill and dig to process until the soil in the sample area is level, and when the soil in each sample area is level, use a modified polyethylene film to cover the soil in each sample area; S3. A mold with a micropore and microchannel structure is manufactured through a designated process, and the modified polyethylene material is processed through an extruder. During the extrusion process, the processed modified polyethylene material is passed through the mold to obtain a modified polyethylene film with a micropore and microchannel structure. After the modified polyethylene film with a micropore and microchannel structure passes the quality inspection, the modified polyethylene film is cut according to the area of ​​each sample area, and each cut modified polyethylene film is evenly covered on the surface of the corresponding sample area, and the edge of each modified polyethylene film is buried in the soil, thereby realizing the pollution monitoring preparation of each sample area.

3. A soil pollution monitoring and analysis system according to claim 2, characterized in that: The pollutant release rate parameters include relative humidity, water vapor flow rate and degradation rate constant, and the pollutant toxicity parameters include total volatile organic pollutant concentration and water vapor pH value.

4. A soil pollution monitoring and analysis system according to claim 3, characterized in that: The specific process of obtaining the pollution diffusion parameters corresponding to each sample area in the specified soil area is as follows: A miniature capacitive humidity sensor is placed at the micropores of the modified polyethylene film corresponding to each sample area, and then the relative humidity corresponding to each sample area in the specified soil area is detected. A flow meter is set at the outlet of the microchannel, and a water vapor flow measurement time period is set to obtain the water vapor flow corresponding to each sample area in the water vapor flow measurement time period. The soil pollutants in the specified soil area are detected using an immunoassay kit to obtain the types of pollutants contained in the specified soil area. The soil environment in the specified soil area is simulated in the laboratory, and the types of pollutants contained in the specified soil area are added to the simulated soil environment. The pollutant concentration in the simulated soil environment is detected in each set collection time period, and the degradation rate constant of the pollutants in the simulated soil environment is obtained using a fitting model. The degradation rate constant of the pollutants in the simulated soil environment is the degradation rate constant corresponding to each sample area in the specified soil area.

5. A soil pollution monitoring and analysis system according to claim 4, characterized in that: The specific calculation process of calculating the pollutant diffusion index corresponding to each sample area is as follows: Obtaining the standard control pollutant release rate parameters corresponding to the specified soil area from the database, the standard control pollutant release rate parameters including standard control relative humidity, standard control water vapor flow and standard control degradation rate constant; By calculating the formula , and obtain the corresponding pollutant diffusion index in each sample area , is the number corresponding to each sample area, , is the total number corresponding to the sample area, is a positive integer, where , , Respectively expressed as The relative humidity, water vapor flow rate, and degradation rate constant corresponding to each sample area are , , They are respectively expressed as standard control relative humidity, standard control water vapor flow rate, and standard control degradation rate constant. , , They are the weight factor corresponding to the set relative humidity, the weight factor corresponding to the water vapor flow rate, and the weight factor corresponding to the degradation rate constant.

6. A soil pollution monitoring and analysis system according to claim 5, characterized in that: The specific process of obtaining the pollutant toxicity parameters corresponding to each sample area in the specified soil area is as follows: The water vapor generated in each sample area is collected from the outlet of the microchannel, and the pollutant concentration sensor is used to detect the concentration of various pollutants contained in the water vapor generated in each sample area. The concentrations of various pollutants are accumulated to obtain the result, which is the concentration of the corresponding total volatile organic pollutants in each sample area in the specified soil area. The pH value of the water vapor generated in each sample area is detected using a pH meter.

7. A soil pollution monitoring and analysis system according to claim 6, characterized in that: The specific calculation process of calculating the pollution source toxicity index corresponding to each sample area is as follows: Obtaining the standard control pollutant toxicity parameters corresponding to the specified soil area from the database, the standard control pollutant toxicity parameters including the concentration of the standard control total volatile organic pollutants and the standard control water vapor pH value; By calculating the formula , and obtain the pollution source toxicity index corresponding to each sample area ,in , Respectively expressed as The concentration of total volatile organic pollutants and water vapor pH value corresponding to each sample area, , They are respectively expressed as the concentration of total volatile organic pollutants of the standard control and the pH value of water vapor of the standard control. , They are respectively the weight factor corresponding to the set total volatile organic pollutant concentration and the weight factor corresponding to the water vapor pH value.

8. A soil pollution monitoring and analysis system according to claim 7, characterized in that: The assessment specifies the pollution situation of the soil area, and the specific assessment process is as follows: According to the pollutant diffusion index and pollution source toxicity index corresponding to each sample area, the pollution assessment value corresponding to the designated soil area is calculated. The pollution assessment value includes the values ​​of -1 and 1. If the pollution assessment value corresponding to the designated soil area is -1, it indicates that the pollution situation in the designated soil area is slightly polluted. If the pollution assessment value corresponding to the designated soil area is 1, it indicates that the pollution situation in the designated soil area is severely polluted.

9. A soil pollution monitoring and analysis system according to claim 8, characterized in that: The calculation obtains the pollution assessment value corresponding to the specified soil area, and the specific process is as follows: Substitute the pollutant diffusion index and pollution source toxicity index corresponding to each sample area into the soil pollution assessment expression: , get the pollution assessment value corresponding to the specified soil area ,in and They are the weight factors corresponding to the set pollutant diffusion index and the pollution source toxicity index, respectively. Expressed as the standard pollution assessment value threshold.

10. A soil pollution monitoring and analysis method for executing the soil pollution monitoring and analysis system according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Pollution monitoring preparation: Screen out the sample areas for pollution monitoring in the designated soil area, and prepare each sample area for pollution monitoring by covering it with mulch film; Step 2: Pollution parameter collection: After the pollution monitoring preparation is completed for each sample area in the designated soil area, the pollution parameters corresponding to each sample area in the designated soil area are obtained. The pollution parameters include pollutant release rate parameters and pollutant toxicity parameters; Step 3: Pollution degree analysis: Based on the pollution parameters corresponding to each sample area in the designated soil area, the pollutant diffusion index and pollution source toxicity index corresponding to each sample area are calculated respectively, thereby evaluating the pollution situation corresponding to the designated soil area; Step 4: Visualization of pollution degree: Display the pollution situation corresponding to the specified soil area in the form of a pollution distribution map.

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