A soil pollution monitoring and analyzing system and method

Abstract

The application discloses a soil pollution monitoring and analyzing system and method, relates to the technical field of soil pollution monitoring, and performs pollution monitoring on a soil pollution area in a mulching mode. In the mulching mode, modified polyethylene film with micro-pore and micro-channel structures is prepared and covered, which is favorable for controlling the evaporation of soil moisture and simultaneously increasing the sensitivity of pollution monitoring. The micro-pore and micro-channel design enables the controlled entry and exit of water and gas in the soil, promotes the collection of monitoring data, and improves the effectiveness and accuracy of monitoring. In the pollution degree analysis process, the diffusion index and toxicity index of pollutants are calculated, and then the pollution evaluation value is scientifically calculated. The application not only provides intuitive indexes for pollution monitoring, but also enables the pollution conditions of different soil areas to be compared horizontally, thereby assisting the scientific management of ecological environment.

Description

TECHNICAL FIELD

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

[0002] Traditional soil pollution monitoring methods usually rely on sampling and laboratory analysis, which have the disadvantages of uneven distribution of sampling points, long analysis period and high cost, etc., which leads to the inability to assess the pollution status in a timely manner and the lag in response. Since soil can accumulate pollutants for a long 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 patent application for invention with publication number CN118780468A discloses an intelligent soil pollutant monitoring method, system and device, which collects a collection instruction for collecting and monitoring the properties of crops in the soil area; collects metadata of target pollutants and target pollutants in the monitoring soil area; diagnoses whether the target pollutants are found in the candidate maintenance log of the monitoring soil area; if the target pollutants are found in the candidate maintenance log of the monitoring soil area, diagnoses whether the metadata are found in the candidate maintenance log; if the metadata are found in the candidate maintenance log, decides the target pollutants and the crop properties represented by the metadata to obtain the crop properties in the monitoring soil area; the target maintenance log is disassembled into multiple candidate maintenance logs according to a preset disassembly mode; diagnoses whether the target pollutants are found in the candidate maintenance log of the monitoring soil area.

[0004] For the above-mentioned scheme, at least the following technical problems exist: 1. The above-mentioned scheme lacks a clear division and screening mechanism for sample areas in a specified soil area, which may result in an insufficient monitoring range, an inability to effectively capture possible pollutants in the soil, and an inability to monitor certain high-risk areas, thereby affecting the accuracy and comprehensiveness of pollution assessment, and lacking a comprehensive assessment of the physical and chemical properties of the soil, thereby leading to incorrect judgments or estimates of the diffusion and effects of pollutants, and reducing the reliability of the monitoring results.

[0005] 2. The above-mentioned scheme lacks a comprehensive collection and analysis method for various pollution parameters, and lacking an analysis of the diffusion speed of pollutants may result in an inability to fully understand the behavior of pollutants in the soil, affecting the assessment of potential harm to the soil, and the diffusion speed of pollutants is directly related to its migration state in the soil, thereby affecting the real-time judgment of the pollution range and severity, and lacking an analysis of the diffusion speed of pollutants combined with toxicity, which may affect the prediction of pollution trends and the development of risk management strategies, and the response and handling capacity for sudden pollution incidents may also be reduced. SUMMARY

[0006] The application aims to provide a soil pollution monitoring and analyzing system and method, and solves the problems in the background art.

[0007] To solve the above technical problems, the application adopts the following technical scheme: the application provides a soil pollution monitoring and analyzing system, comprising: a pollution monitoring preparation module, configured to screen out each sample area in a specified soil area for pollution monitoring, and to prepare for pollution monitoring of each sample area by using mulching film covering.

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

[0009] A pollution degree analysis module, configured to calculate corresponding pollutant diffusion indexes and pollution source toxicity indexes in each sample area in the specified soil area according to the corresponding pollution parameters in each sample area in the specified soil area, and to evaluate the corresponding pollution condition of the specified soil area.

[0010] A pollution degree visualization module, configured to display the corresponding pollution condition of the specified soil area in the form of a pollution distribution map.

[0011] Preferably, the pollution monitoring preparation of each sample area by using mulching film covering is performed according to the following specific process: S1, obtain the corresponding soil state in the specified soil area by using GIS technology, and obtain each potential risk area in the specified soil area by combining the corresponding historical pollution information of the specified soil area, wherein each potential risk area is each sample area for pollution monitoring in the specified soil area.

[0012] S2, use weeding tools and tillage tools to remove weeds and loosen the soil in each sample area, use a level to measure whether the soil in each sample area is on the same level, when the soil in a sample area is not on the same level, use an iron shovel to fill and dig until the soil in the sample area is flat, and when the soil in each sample area is flat, use modified polyethylene film to cover the soil in each sample area with mulching film.

[0013] S3, a mold with micro-pore and micro-channel structure is made by a specified process, the modified polyethylene material is processed through an extruder, in the extrusion process, the modified polyethylene material being processed passes through the mold, thus obtaining a modified polyethylene film with micro-pore and micro-channel structure, after the modified polyethylene film with micro-pore and micro-channel structure passes through quality detection, the modified polyethylene film is cut according to the area of each sample area, each modified polyethylene film after cutting is evenly covered on the surface of the corresponding sample area, and the edges of each modified polyethylene film are buried in the soil, and thus the pollution monitoring preparation of each sample area is realized.

[0014] The application provides a soil pollution monitoring analysis method in a second aspect, which comprises the following steps: step one, pollution monitoring preparation: screening each sample area in a specified soil area for pollution monitoring, and preparing each sample area for pollution monitoring by mulching with a mulch film.

[0015] Step two, pollution parameter collection: after each sample area in the specified soil area completes the pollution monitoring preparation, the corresponding pollution parameters in each sample area in the specified soil area are obtained, the pollution parameters including a pollutant release rate parameter and a pollutant toxicity parameter.

[0016] Step three, pollution degree analysis: according to the corresponding pollution parameters in each sample area in the specified soil area, the corresponding pollutant diffusion index and pollution source toxicity index in each sample area are calculated respectively, and thus the corresponding pollution situation of the specified soil area is evaluated.

[0017] Step four, pollution degree visualization: the corresponding pollution situation of the specified soil area is displayed in the form of a pollution distribution map.

[0018] The application has the following beneficial effects: 1. The soil pollution monitoring analysis system and method provided by the application, in the process of pollution monitoring preparation, the soil state information in the specified soil area is obtained by using GIS technology, the historical pollution information is combined to identify each potential risk area, which is beneficial to ensure that the monitoring target is targeted, thereby improving the monitoring efficiency and avoiding resource waste, in the sample area preparation process, the weeding tool and the tillage tool are used for weed removal and soil tillage, and then the level ruler is used to ensure that the soil is on the same horizontal plane, which effectively improves the physical state of the soil and improves the monitoring ability of the soil, which helps to obtain more accurate pollution monitoring results and reduces the interference of the external environment on the monitoring.

[0019] 2、The embodiment of the present application is in the way of mulching film covering, by making modified polyethylene film with microporous and microchannel structure and covering, it is beneficial to control the evaporation of soil moisture, and also increases the sensitivity of pollutant monitoring, the microporous and microchannel design can make the water and gas in the soil in and out in a controllable way, promote the collection of monitoring data, improve the effectiveness and accuracy of monitoring.

[0020] 3、The embodiment of the present application in the process of pollution degree analysis, according to the obtained pollution parameters, such as pollutant release rate parameter and pollutant toxicity parameter, the diffusion index and toxicity index of the pollutant are calculated, and then the pollution evaluation value is calculated scientifically, the pollution degree is clearly indicated, not only the intuitive index of pollution monitoring is provided, but also the pollution situation of different soil regions can be compared horizontally, which helps the scientific management of ecological environment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

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

[0023] Figure 2 It is a schematic diagram of the system structure of the present application. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] Please refer to Figure 1 The present application provides a soil pollution monitoring and analysis system, which comprises 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 with the pollution parameter collection module, the pollution parameter collection module is connected with the pollution degree analysis module and the database respectively, and the pollution degree analysis module is connected with the pollution degree visualization module and the database respectively.

[0027] The pollution monitoring preparation module is used for screening each sample area in the specified soil area for pollution monitoring, and performing pollution monitoring preparation on each sample area by mulching.

[0028] In a specific embodiment, the pollution monitoring preparation on each sample area by mulching is specifically as follows: S1, obtaining the corresponding soil state in the specified soil area by GIS technology, and obtaining each potential risk area in the specified soil area by combining the corresponding historical pollution information of the specified soil area, each potential risk area being each sample area in the specified soil area for pollution monitoring.

[0029] S2, using weeding tools and tillage tools to remove weeds and loosen the soil of each sample area, using a level to measure whether the soil in each sample area is on the same level, when the soil in a sample area is not on the same level, using an iron shovel and filling and digging to process until the soil in the sample area is flat, and when the soil in each sample area is flat, using modified polyethylene film to mulch the soil in each sample area.

[0030] S3, a mold with a microporous and microchannel structure is prepared by a specified process, modified polyethylene material is processed by an extruder, the modified polyethylene material being processed is passed through the mold in the extrusion process, thereby obtaining a modified polyethylene film with a microporous and microchannel structure, after the modified polyethylene film with a microporous and microchannel structure passes quality detection, the modified polyethylene film is cut according to the area of each sample area, each modified polyethylene film cut is respectively flatly covered on the surface of the corresponding sample area, and the edges of each modified polyethylene film are 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 a microporous and microchannel structure, the formed polyethylene film is subjected to quality detection, including detection of micropore size, channel shape, film thickness and other indicators to ensure that the design requirements are met, the detection includes air permeability, water vapor permeability test and mechanical property test to ensure that the film can effectively play the expected function in actual application, the specified process includes die casting and 3D printing, the tillage tools include but are not limited to a hoe, a share plow and a rotary cultivator, the weeding tools include but are not limited to herbicides and manual weeding tools, the soil state includes but is not limited to soil humidity, vegetation area and soil temperature, and the historical pollution information includes pollution event records and pollutant types.

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

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

[0034] In a specific embodiment, the pollution diffusion parameter in each sample area in the specified soil area is obtained by placing a micro-capacitive humidity sensor at the micropore of the modified polyethylene film corresponding to each sample area to detect the relative humidity in each sample area in the specified soil area, arranging a flow meter at the outlet of the micro-channel, setting a water vapor flow measurement time period to obtain the water vapor flow in each sample area in the water vapor flow measurement time period, using an immune kit to detect the soil pollutants in the specified soil area to obtain the types of pollutants contained in the specified soil area, simulating the soil environment in the specified soil area in a laboratory, adding the types of pollutants contained in the specified soil area in the simulated soil environment, detecting the concentration of pollutants in the simulated soil environment at a set collection time period, and using a fitting model to obtain the degradation rate constant of the pollutants in the simulated soil environment, which is the degradation rate constant corresponding to each sample area in the specified soil area.

[0035] It should be noted that the 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 in percentage. According to historical pollution information and the industrial environment near the specified soil, the types of pollutants contained in the specified soil are preliminarily determined, and the immune kit is used for targeted detection and confirmation of the preliminarily determined types of pollutants to obtain the types of pollutants contained in the specified soil area. The immune kit contains antibodies specific to certain pollutants. When the target pollutants in the soil sample come into contact with the antibodies, a specific antigen-antibody reaction occurs. The fitting model is a prior art and will not be described in detail here.

[0036] In a specific embodiment, the pollution toxicity parameter in each sample area in the specified soil area is obtained by collecting the water vapor generated in each sample area from the outlet of the micro-channel, using a pollutant concentration sensor to detect the concentration of each type of pollutant contained in the water vapor generated in each sample area, and accumulating the concentration of each type of pollutant to obtain 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] The embodiment of the present application is in the mode of mulching, by making modified polyethylene film with microporous and microchannel structure and covering, which is conducive to controlling the evaporation of soil moisture, and also increases the sensitivity of pollutant monitoring, the microporous and microchannel design can make the water and gas in the soil in and out in a controllable way, promote the collection of monitoring data, and improve the effectiveness and accuracy of monitoring.

[0038] The pollution degree analysis module is used for calculating the corresponding pollutant diffusion index and the pollution source toxicity index of each sample area according to the corresponding pollution parameters in each sample area in the specified soil area, so as to evaluate the corresponding pollution situation of the specified soil area.

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

[0040] The corresponding pollutant diffusion index TV of each sample area is obtained by the calculation formula i , i is the corresponding number of each sample area, i = 1, 2,..., n, n is the total number of sample areas, n is a positive integer, wherein rh i , wv i , dc i respectively represent the relative humidity, water vapor flow and degradation rate constant corresponding to the ith sample area, rh', wv', dc' respectively represent the standard control relative humidity, standard control water vapor flow and standard control degradation rate constant, ι1, ι2, ι3 respectively are the weight factor corresponding to the relative humidity, the weight factor corresponding to the water vapor flow, and the weight factor corresponding to the degradation rate constant.

[0041] It should be noted that the values of ι1, ι2, ι3 are all greater than 0 and less than 1, the relative humidity directly affects the water state in the soil, high relative humidity means that the soil moisture is more, which is beneficial to dissolve the pollutants and promote their migration, and the wet soil can reduce the porosity of the soil, so that the molecular diffusion is easier to carry out.

[0042] ​It also needs to be explained that the historical pollution information corresponding to the soil of the same type as the specified soil type is obtained from the database, 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 mean value of each historical relative humidity weight factor value, each historical water vapor flow weight factor value and each historical degradation rate constant weight factor value is calculated, and the result is the weight factor corresponding to the relative humidity, the weight factor corresponding to the water vapor flow and the weight factor corresponding to the degradation rate constant.

[0043] It also needs to be explained that the relative humidity will affect the release of pollutants in the soil, for example, high relative humidity will make the pollutants in the soil more volatile or migrate with water vapor, in a high humidity environment, volatile organic pollutants will desorb from the surface of soil particles into the air, accelerating the diffusion speed, water vapor flow is directly related to the migration of pollutants, for example, large water vapor flow will carry more pollutants for diffusion, such as water flow carrying sediment, water vapor flow 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 speed of pollutants in the soil, if the degradation rate constant is larger, it means that the pollutants have a faster natural decomposition process in the soil, then the accumulation of pollutants in the soil will be relatively less, the higher the pollutant diffusion index, the wider the diffusion range of pollutants in the soil, the easier it is to pollute a larger range of soil.

[0044] In a specific embodiment, the toxicity index of the corresponding pollution source in each sample area is calculated, and the specific calculation process is 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 standard control total volatile organic pollutants and the pH value of standard control water vapor.

[0045] The concentration of total volatile organic pollutants in each sample area is calculated by the formula The toxicity index TT of the corresponding pollution source in each sample area is obtained i , ph i , ph i respectively represent the concentration of total volatile organic pollutants corresponding to the i-th sample area, the pH value of water vapor, yc', ph' respectively represent the concentration of standard control total volatile organic pollutants, the pH value of standard control water vapor, μ1, μ2 are respectively the weight factor corresponding to the concentration of total volatile organic pollutants and the weight factor corresponding to the pH value of water vapor.

[0046] It needs to be explained that the values of μ1 and μ2 are greater than 0 and less than 1, and the setting process of μ1 and μ2 is the same as that of ι1, ι2 and ι3, which will not be described in detail here.

[0047] It is also necessary to point out that high concentrations of volatile organic pollutants and extreme water vapor pH values can exacerbate the toxicity of pollutants, such as pH values that are too high or too low, because the total volatile organic pollutant concentration and water vapor pH value can significantly increase the activity, mobility, and bioavailability of pollutants.

[0048] It is also necessary to point out that the total volatile organic pollutant concentration is an important indicator of the content of organic pollutants in soil, for example, high concentrations of volatile organic pollutants can inhibit the activity of beneficial microorganisms in soil, and higher concentrations mean that there are more toxic and harmful substances in the soil. Volatile organic pollutants can harm microbial communities and plant growth in soil, and water vapor pH can affect the chemical form and toxicity of pollutants, for example, certain metal pollutants are more easily dissolved in acidic water vapor environments, thereby increasing their bioavailability and toxicity. The higher the pollution source toxicity index, the stronger the toxicity of the soil pollution source itself, and the greater the harm to the soil ecosystem.

[0049] In a specific embodiment, the evaluation specifies the pollution situation of the specified soil region, and the specific evaluation process is as follows: according to the corresponding pollutant diffusion index and pollution source toxicity index in each sample region, the pollution evaluation value corresponding to the specified soil region is calculated, the pollution evaluation value includes the values -1 and 1, if the pollution evaluation value corresponding to the specified soil region is -1, then it indicates that the pollution situation of the specified soil region is mild pollution, and if the pollution evaluation value corresponding to the specified soil region is 1, then it indicates that the pollution situation of the specified soil region is serious pollution.

[0050] In a specific embodiment, the pollution evaluation value corresponding to the specified soil region is calculated, and the specific process is as follows: the corresponding pollutant diffusion index and pollution source toxicity index in each sample region are substituted into the soil pollution evaluation expression: to obtain the pollution evaluation value a corresponding to the specified soil region i where κ1 and κ2 are the weight factors corresponding to the pollutant diffusion index and the weight factors corresponding to the pollution source toxicity index, respectively, and Y represents the standard pollution evaluation value threshold.

[0051] It should be noted that the values of κ1 and κ2 are both greater than 0 and less than 1, and the setting process of κ1 and κ2 is the same as that of ι1, ι2, and ι3, which will not be described in detail here. Y is the basis for evaluating the pollution situation of the specified soil region, for example, when the value of Y is 20, when the value of Y is 15, it indicates that the pollution situation of the specified soil region is mild pollution.

[0052] The embodiment of the present application clearly indicates the pollution degree in the pollution degree analysis process by calculating the diffusion index and toxicity index of the pollutants according to the obtained pollution parameters, such as the pollutant release rate parameter and the pollutant toxicity parameter, and then scientifically calculating the pollution evaluation value process, not only provides an intuitive index for pollution monitoring, but also enables the pollution situation of different soil regions to be compared horizontally, and helps the scientific management of the ecological environment.

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

[0054] It should be noted that the pollution situation of the specified soil region and the pollution situation of each sample region in the specified soil region are presented in the form of a color gradient distribution map, and different colors represent different levels of pollution.

[0055] The database is used to store the standard control pollutant release rate parameter corresponding to the specified soil region, the standard control pollutant release rate parameter including the standard control relative humidity, the standard control water vapor flow, and the standard control degradation rate constant, the standard control pollutant toxicity parameter corresponding to the specified soil region, the standard control pollutant toxicity parameter including the concentration of the standard control total volatile organic pollutants and the standard control water vapor pH value, the historical pollution information corresponding to the soil of the same soil type, and the historical pollution information including each historical relative humidity weight factor value, each historical water vapor flow weight factor value, and each historical degradation rate constant weight factor value.

[0056] Please refer to Figure 2 A soil pollution monitoring and analysis method is shown in FIG. 1, which includes the following steps: Step one, pollution monitoring preparation: screening each sample region in the specified soil region for pollution monitoring, and preparing for pollution monitoring of each sample region by mulching.

[0057] Step two, pollution parameter collection: after each sample region in the specified soil region completes the pollution monitoring preparation, the corresponding pollution parameters in each sample region in the specified soil region are obtained, including the pollutant release rate parameter and the pollutant toxicity parameter.

[0058] Step three, pollution degree analysis: according to the corresponding pollution parameters in each sample region in the specified soil region, the corresponding pollutant diffusion index and pollution source toxicity index in each sample region are calculated, and thus the pollution situation corresponding to the specified soil region is evaluated.

[0059] Step four, pollution degree visualization: the pollution situation of the specified soil region is displayed in the form of a pollution distribution map.

[0060] The soil pollution monitoring analysis system and method provided by the application, in the process of pollution monitoring preparation, the soil state information in the specified soil area is obtained by using GIS technology, and each potential risk area is identified by combining historical pollution information, which is beneficial to ensure that the monitoring target is targeted, thereby improving the monitoring efficiency and avoiding resource waste; in the sample area preparation process, the weeding tool and the tillage tool are used for weed removal and soil tillage, and then the level is used to ensure that the soil is on the same horizontal plane, effectively improving the physical state of the soil and improving the monitoring capacity of the soil, which is helpful to obtain more accurate pollution monitoring results and reduce the interference of the external environment on the monitoring.

[0061] The above is only an example and description of the concept of the application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as the concept of the application is not deviated or the scope defined in the specification is not exceeded, which shall belong to the protection scope of the application.

Claims

1. A soil pollution monitoring and analysis system, characterized by, The application relates to a soil pollution monitoring method and device. The application comprises the following steps: A pollution monitoring preparation module is used for screening sample areas in a specified soil area for pollution monitoring and preparing the sample areas for pollution monitoring by mulching with a mulch film; A pollution parameter collection module is used for collecting corresponding pollution parameters in the sample areas in the specified soil area after the sample areas in the specified soil area are prepared for pollution monitoring, wherein the pollution parameters include a pollution release rate parameter and a pollution toxicity parameter; A pollution degree analysis module is used for calculating corresponding pollution diffusion indexes and pollution source toxicity indexes in the sample areas in the specified soil area according to the corresponding pollution parameters in the sample areas in the specified soil area, so as to evaluate the corresponding pollution condition of the specified soil area; A pollution degree visualization module is used for displaying the corresponding pollution condition of the specified soil area in the form of a pollution distribution map; The specific process of preparing the sample areas for pollution monitoring by mulching with a mulch film is as follows: S1. The soil state in the specified soil area is obtained by using a GIS technology, and corresponding potential risk areas in the specified soil area are obtained by combining the historical pollution information of the specified soil area, wherein each potential risk area is a sample area in the specified soil area for pollution monitoring; S2. Weeds in the soil of the sample areas are removed and the soil is ploughed by using weeding tools and ploughing tools, and whether the soil in the sample areas is on the same level is measured by using a level ruler; when the soil in a sample area is not on the same level, the soil is treated by filling and digging by using an iron shovel until the soil in the sample area is flat; when the soil in each sample area is flat, the soil in the sample areas is mulched with a modified polyethylene film; S3. A mold with a micropore and microchannel structure is prepared by using a specified process, modified polyethylene material is processed by using an extruder, the modified polyethylene material being processed is passed through the mold in the extrusion process, so that a modified polyethylene film with a micropore and microchannel structure is obtained, after the modified polyethylene film with a micropore and microchannel structure is detected in quality, the modified polyethylene film is cut according to the area of each sample area, each modified polyethylene film cut is flatly covered on the surface of the corresponding sample area, and the edges of each modified polyethylene film are buried in the soil, so as to realize the pollution monitoring preparation of the sample areas; The pollution release rate parameter includes relative humidity, water vapor flow and degradation rate constant, and the pollution toxicity parameter includes the concentration of total volatile organic pollutants and water vapor pH value; The specific process of collecting the corresponding pollution diffusion parameters in the sample areas in the specified soil area is as follows: The micro-capacitive humidity sensor is placed at the micropore of the modified polyethylene film corresponding to each sample area of the specified soil area, and the corresponding relative humidity in each sample area of the specified soil area is detected. A flow meter is arranged at the outlet of the micro-channel, and the water vapor flow measurement time period is set to obtain the corresponding water vapor flow of each sample area in the water vapor flow measurement time period. The soil pollutants in the specified soil area are detected by using an immunoreagent 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 at a set collection time period. The degradation rate constant of the pollutant in the simulated soil environment is obtained by using a fitting model. The degradation rate constant of the pollutant in the simulated soil environment is the corresponding degradation rate constant of each sample area in the specified soil area.

2. The soil pollution monitoring and analyzing system according to claim 1, wherein, The corresponding pollutant diffusion index of 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 and standard control degradation rate constant. Through calculation formula The pollutant diffusion index corresponding to each sample area was obtained. , The corresponding numbers are assigned to each sample region. , This represents the total number of samples corresponding to each region. are positive integers, where , , Represented as the first The relative humidity, water vapor flow rate, and degradation rate constant corresponding to each sample area. , , These are respectively represented as relative humidity of the standard control, water vapor flow rate of the standard control, and degradation rate constant of the standard control. , , These are the weighting factors corresponding to the set relative humidity, water vapor flow rate, and degradation rate constant, respectively.

3. The soil pollution monitoring and analyzing system according to claim 2, wherein, The corresponding pollutant toxicity parameters of each sample area in the specified soil area are obtained, and the specific process is as follows: The water vapor generated in each sample area is collected from the outlet of the micro-channel, and the pollutant concentration sensor is used to detect the concentration of each type of pollutant contained in the water vapor generated in each sample area, and the concentration of each type of pollutant is accumulated to obtain the concentration of 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 by using a pH meter.

4. The soil pollution monitoring and analyzing system according to claim 3, wherein, The corresponding pollution source toxicity index of each sample area is calculated, and the specific calculation process is 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 standard control total volatile organic pollutants and the pH value of standard control water vapor. The toxicity index of the pollution source in each sample area is obtained by the calculation formula , wherein , wherein , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first sample area, , , , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first sample area, , , , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first sample area, , , , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first sample area, , , , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first sample area, , , , , respectively, is the concentration of total volatile organic pollutants and the pH value of water vapor corresponding to the first 5. The soil pollution monitoring and analyzing system according to claim 4, wherein, The pollution condition corresponding to the specified soil area is evaluated, and the specific evaluation process is as follows: According to the corresponding pollutant diffusion index and pollution source toxicity index of each sample area, the pollution evaluation value corresponding to the specified soil area is calculated, and the pollution evaluation value includes-1 and 1. If the pollution evaluation value corresponding to the specified soil area is-1, it indicates that the pollution condition of the specified soil area is mild pollution. If the pollution evaluation value corresponding to the specified soil area is 1, it indicates that the pollution condition of the specified soil area is serious pollution.

6. The soil pollution monitoring and analyzing system according to claim 5, wherein, The specific process of calculating the pollution evaluation value corresponding to the specified soil area is as follows: The corresponding pollutant diffusion index and pollution source toxicity index in each sample area are substituted into the soil pollution assessment expression: to obtain the corresponding pollution assessment value of the specified soil area , wherein and are the weight factor corresponding to the set pollutant diffusion index and the weight factor corresponding to the pollution source toxicity index, respectively, represents the standard pollution assessment value threshold.

7. A soil pollution monitoring and analyzing method of performing the soil pollution monitoring and analyzing system according to any one of claims 1 to 6, characterized by, The specific process of calculating the pollution evaluation value corresponding to the specified soil area is as follows: Step one, pollution monitoring preparation: screening each sample area in the specified soil area for pollution monitoring, and preparing each sample area for pollution monitoring by mulching with geotextile; Step two, pollution parameter collection: after the preparation of the pollution monitoring of each sample area in the designated soil area is completed, the corresponding pollution parameters of each sample area in the designated soil area are obtained, including the pollution release rate parameter and the pollution toxicity parameter; Step three, pollution degree analysis: according to the corresponding pollution parameters of each sample area in the designated soil area, the corresponding pollution diffusion index and pollution source toxicity index of each sample area are calculated respectively, so as to evaluate the corresponding pollution situation of the designated soil area; Step four, pollution degree visualization: the corresponding pollution situation of the designated soil area is displayed in the form of a pollution distribution map.

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