Ecological wetland water quality purification service value accounting system and method

Abstract

The invention belongs to the technical field of ecological system service value evaluation, and particularly relates to an ecological wetland water quality purification type service value accounting system and method, and the system comprises a water quality collection module, a region division module, a feedback adjustment module, a data processing module and a value accounting module. Through mutual cooperation of the water quality acquisition module, the region division module and the feedback regulation module, comprehensive and accurate monitoring of water quality of different regions in the wetland can be realized; the water quality index of the target wetland region can be obtained according to the set time interval, the wetland region is divided, the automatic operation instruction is generated according to the pollution source type, and accurate monitoring is achieved. Through cooperation of the data processing module and the value accounting module, the total purification amount of pollutants can be calculated and converted into service value, and a scientific basis is provided for evaluation of the wetland water quality purification effect. The method has the advantages of comprehensive and accurate monitoring, high data processing capability, scientific evaluation and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of ecosystem service value assessment, and specifically relates to a system and method for calculating the value of ecological wetland water purification services. Background Art

[0002] The value of water purification services is an important aspect of ecosystem service value assessment. It mainly refers to the service value provided by natural water bodies such as wetlands and rivers through the combined effects of physics, chemistry and biology to decompose and purify pollutants. Specifically, when pollutants flow into these natural water bodies, the water bodies can use their own purification capabilities to effectively remove pollutants in the water through filtration, adsorption, precipitation, plant absorption, microbial degradation, etc., thereby maintaining clean water quality and the health of the ecosystem.

[0003] In the assessment of ecosystem service value, the water purification value is usually calculated by evaluating the amount of pollutants purified by the water body and combining it with the market sewage treatment cost price. For example, the amount of pollutants such as nitrogen and phosphorus removed per unit area of ​​the wetland can be evaluated, and then its purification value can be calculated based on the sewage treatment cost. Some existing automated water quality monitoring equipment and methods are gradually being used in wetland water quality monitoring. However, these devices still have the following defects:

[0004] 1. Limited monitoring scope: Traditional water quality monitoring methods and existing automated water quality monitoring equipment are often limited to wetland outlets or specific areas in terms of monitoring scope. Comprehensive monitoring of water quality changes in different depths or ranges within the wetland requires enormous manpower and material resources.

[0005] 2. Insufficient monitoring accuracy: Since wetland water quality is affected by many factors, wetland areas in different regions may have different pollution sources. Existing technologies often cannot achieve ideal results in obtaining and mastering water quality changes and pollutant removal in different pollution source areas, resulting in differences in the value accounting of water purification services. Summary of the invention

[0006] The purpose of the present invention is to provide a system and method for calculating the value of ecological wetland water purification services to solve the problems raised in the background technology.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0008] In the first aspect, the present invention proposes a system for calculating the value of ecological wetland water purification services, including:

[0009] A water quality collection module, used to obtain a first water quality index in a target wetland area at a set time interval;

[0010] A region division module, used for dividing the target wetland region according to the first water quality index to obtain a plurality of target sub-regions with different main pollution sources;

[0011] A feedback adjustment module, configured to generate an instruction for controlling the water quality acquisition module to perform automatic operation according to the main pollution source of the corresponding target sub-area, so as to control the water quality acquisition module to obtain the second water quality index corresponding to each target sub-area; wherein the instruction includes at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range;

[0012] A data processing module, used to determine an index parameter for purifying pollutants in the water body according to the second water quality index, and determine a total amount of pollutant purification according to the index parameter before and after the set time interval;

[0013] The value accounting module is used to convert the total amount of pollutant purification into the value of ecological wetland water purification services.

[0014] Furthermore, the water quality collection module includes a mounting carrier, and a sampling mechanism movably connected to the mounting carrier, and the connection portion between the sampling mechanism and the mounting carrier is equipped with a rotating driving member; the sampling mechanism includes a plurality of longitudinally arranged sampling tubes 1 of different lengths, and a plurality of horizontally arranged arc-shaped sampling tubes 2, and the sampling ports of the plurality of sampling tubes 2 are located on the same annular path; wherein, a telescopic driving member is provided at the upper ends of the sampling tubes 1 and 2, for driving the sampling tubes 1 and 2 as a whole to move upward or downward for sampling.

[0015] Furthermore, the rotating driving member responds to the instruction and drives the sampling mechanism to controllably rotate along the annular opening provided on the mounting carrier. At this time, sampling is carried out through the sampling tube 2 to increase the monitoring range; the telescopic driving member responds to the instruction and drives the sampling tube 1 and the sampling tube 2 on the sampling mechanism to move up or down to increase the monitoring depth.

[0016] Furthermore, the area division module includes:

[0017] A pollution source analysis unit, used to identify and determine multiple pollution source types based on the comparison results of the first water quality index of each target sub-area with a preset threshold value;

[0018] The sub-area division unit is used to divide the target wetland area according to the multiple pollution source types to form target sub-areas corresponding to multiple different main pollution source types.

[0019] Furthermore, the feedback regulation module includes an automatic control unit, which is used to automatically select and generate instructions for controlling the water quality collection module based on the output results of the pollution source analysis unit to obtain a second water quality indicator corresponding to each target sub-area; wherein the second water quality indicator includes a direct evaluation indicator for the main pollution source type, and the main pollution source type includes at least one of organic pollution, nutrient pollution and heavy metal pollution.

[0020] Furthermore, the data processing module includes:

[0021] A pollutant purification evaluation unit, configured to receive the second water quality index, and calculate the pollutant removal rate and purification efficiency corresponding to each index parameter by comparing each index parameter in the second water quality index before and after the set time interval;

[0022] The total amount calculation unit is used to determine the total removal amount of various pollutants in the target wetland area within the set time interval by combining the actual area and water depth data of the target wetland area, as well as the removal rate and purification efficiency.

[0023] Furthermore, the value accounting module is preset with a conversion algorithm based on the principles of environmental economics, which is used to convert the total purification amount of pollutants into a specific service value; the conversion algorithm is a direct market valuation method, an alternative market valuation method or a hypothetical market valuation method.

[0024] In the second aspect, the present invention proposes a method for calculating the value of ecological wetland water purification services, which is applied to the above-mentioned accounting system; the accounting method comprises the following steps:

[0025] S1, obtaining a first water quality index in a target wetland area at a set time interval;

[0026] S2. Divide the target wetland area according to the first water quality index to obtain a plurality of target sub-areas with different main pollution sources;

[0027] S3, generating a preset control logic according to the main pollution source of the corresponding target sub-area to obtain the second water quality index corresponding to each target sub-area; wherein the preset control logic includes at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range;

[0028] S4. Determine an index parameter for purifying pollutants from a water body according to the second water quality index, and determine a total amount of pollutants purified according to the index parameter and the value evaluation weight;

[0029] S5. Convert the total amount of pollutant purification into the ecological wetland water purification service value based on the preset water purification model.

[0030] The beneficial effects of the present invention are:

[0031] 1. The ecological wetland water purification service value accounting system proposed in the present invention can realize comprehensive and accurate monitoring of water quality in different areas of the wetland through the cooperation of the water quality collection module, the regional division module and the feedback adjustment module. By automatically collecting water quality samples at set time intervals and dividing the wetland into regions according to water quality indicators, more detailed monitoring can be carried out for different pollution source areas, so as to more accurately grasp the water quality changes and pollutant removal in each area.

[0032] 2. The present invention can calculate the total amount of pollutants purified based on water quality monitoring data through the cooperation of the data processing module and the value accounting module, and convert the total amount of pollutants purified into specific service value based on the water quality purification model based on the principle of environmental economics. This provides a scientific basis for the evaluation of wetland water purification effects, and helps to achieve optimal allocation of resources and scientific decision-making for wetland protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a system framework diagram of the accounting system of the present invention;

[0034] Figure 2 It is another system framework diagram of the accounting system of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the water quality collection module in the present invention;

[0036] Figure 4 It is a partial bottom view of the water quality collection module in the present invention.

[0037] In the figure: 1. Water quality collection module; 2. Area division module; 3. Feedback adjustment module; 4. Data processing module; 5. Value accounting module; 10. Installation carrier; 11. Annular port; 12. Rotating drive member; 13. Connecting member; 20. Sampling mechanism; 21. Data transmission unit; 22. Counterweight; 23. Handle; 24. Telescopic drive member; 25. Sampling tube 1; 26. Sampling tube 2; 201. Pollution source analysis unit; 202. Sub-area division unit; 300. Automation control unit; 401. Pollutant purification assessment unit; 402. Total amount calculation unit. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0039] Example 1

[0040] like Figure 1 As shown, this embodiment proposes a value accounting system for ecological wetland water quality purification services, including a water quality collection module 1, a regional division module 2, a feedback adjustment module 3, a data processing module 4 and a value accounting module 5: the water quality collection module 1 is used to obtain a first water quality index in a target wetland area at a set time interval; the regional division module 2 is used to divide the target wetland area according to the first water quality index to obtain target sub-areas with multiple different main pollution sources; the feedback adjustment module 3 is used to generate instructions for controlling the water quality collection module to perform automated operations according to the main pollution sources of the corresponding target sub-areas, so as to control the water quality collection module 1 to obtain a second water quality index corresponding to each target sub-area; wherein the instructions include at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range; the data processing module 4 is used to determine the index parameters of water body purification of pollutants according to the second water quality index, and determine the total pollutant purification amount according to the index parameters and the value evaluation weight; the value accounting module 5 is used to convert the total pollutant purification amount into the ecological wetland water quality purification service value according to a preset water quality purification model.

[0041] The accounting system first obtains the first water quality index in the target wetland area at a set time interval through the acquisition module 1. The first water quality index includes but is not limited to COD (chemical oxygen demand), BOD (biochemical oxygen demand), TP (total phosphorus), TN (total nitrogen) and DO (dissolved oxygen), etc., which are used to evaluate the removal effect of pollutants and the self-purification capacity of the wetland in detail; the setting of the time interval is set in order to obtain the change amount of pollutants in the wetland water area within a specific period. The area division module 2 divides the target wetland area according to the first water quality index to obtain multiple target sub-areas with different main pollution sources. As an example, if the main pollution problem of the wetland is organic pollution, then the second water quality index can choose COD and BOD. If phosphorus and nitrogen pollution are serious, then TP and TN will be important second water quality indicators.

[0042] It can be understood that in this embodiment, by first obtaining the first water quality index, the system can fully understand the overall water quality of the target wetland area. On this basis, the wetlands are divided into regions, and more detailed monitoring is carried out for different pollution source areas, so that the water quality changes and pollutant removal in each area can be more accurately grasped. Secondly, this solution helps to achieve the optimal allocation of resources. By dividing the areas with different pollution sources, the system can reasonably allocate monitoring and governance resources according to the degree of pollution and ecological service value of each area. This can not only improve the efficiency of resource utilization, but also ensure that key areas receive sufficient attention and governance.

[0043] like Figure 3 and Figure 4As shown, it is further preferred that the water quality collection module 1 includes an installation carrier 10 (connected to a carrier such as a monitoring station or a ship), and a sampling mechanism 20 (used to sample the water body in the target wetland area) movably connected to the installation carrier 10, and the connection between the sampling mechanism 20 and the installation carrier 10 is equipped with a rotating drive member 12 (a servo motor and a rotating cylinder can be selected); the sampling mechanism 20 includes a plurality of longitudinally arranged sampling tubes 1 25 of different lengths, and a plurality of horizontally arranged arc-shaped sampling tubes 2 26, and the sampling ports of the plurality of sampling tubes 2 26 are located on the same annular path; wherein, a telescopic drive member 24 (a telescopic cylinder and an electric telescopic rod can be selected) is provided at the upper end of the sampling tube 1 25 and the sampling tube 2 26, which is used to drive the sampling tube 1 25 and the sampling tube 2 26 to move up or down as a whole for sampling. In addition, the sampling mechanism 20 also includes a configuration 22 and a handle 23, and the configuration 22 is used to assist the overall in-depth sampling of the water body.

[0044] Further preferably, the sampling mechanism 20 is driven to rotate controllably along the annular opening 11 provided on the mounting carrier 10 by the rotating driving member 12 in response to the instruction, and at this time, the sampling is conducted through the sampling tube 26 to increase the monitoring range. Figure 3 The sampling mechanism 20 can sample in a circular manner along the annular opening 11 through the annular sampling tube 26. During sampling, the connecting member 13 at its output end (an L-shaped shaft member can be selected to pass through the annular opening 11) is driven to rotate by the rotating driving member 12. The end of the connecting member 13 is connected to the sampling mechanism 20, which can expand the monitoring range of the water body. The sampling tube 1 25 and the sampling tube 2 26 on the sampling mechanism 20 are driven to move up or down by the telescopic driving member 24 in response to instructions to increase the monitoring depth.

[0045] It should be noted that, in this embodiment, the sampling mechanism 20 also includes a water quality sensor or analyzer, which is connected or integrated with the sampling tube 1 25 and the sampling tube 2 26. After the sampling tube 1 25 or the sampling tube 2 26 takes a sample from the water body, the water sample will be transported to these sensors or analyzers for measurement and analysis. Through the cooperation of the rotating drive member and the telescopic drive member, the sampling mechanism can sample and monitor water bodies of different depths and ranges, thereby obtaining more comprehensive and accurate water quality data, and the above water quality data is sent out through the data transmission unit 21 provided on the sampling mechanism 20.

[0046] In addition, this embodiment solves the problem in the prior art that the water intake structure repeatedly extends into the water body to form a circulation in the water, thereby affecting the final water quality monitoring results, by providing sampling tubes 25 with different preset lengths.

[0047] Further preferably, the area division module 2 includes a pollution source analysis unit 201 and a sub-area division unit 202: the pollution source analysis unit 201 is used to identify and determine multiple pollution source types based on the comparison results of the first water quality index of each target sub-area with a preset threshold; the sub-area division unit 202 is used to divide the target wetland area according to multiple pollution source types to form target sub-areas corresponding to multiple different main pollution source types.

[0048] Further preferably, the feedback adjustment module 3 includes an automation control unit 300, which is used to automatically select and generate instructions for controlling the water quality acquisition module 1 based on the output results of the pollution source analysis unit 201, so as to obtain the second water quality index corresponding to each target sub-area; wherein the second water quality index includes a direct evaluation index for the main pollution source type, and the main pollution source type includes at least one of organic pollution, nutrient salt pollution and heavy metal pollution. The feedback adjustment module 3 automatically selects and generates instructions for controlling the water quality acquisition module 1 based on the output results of the pollution source analysis unit 201, that is, the multiple pollution source types identified. These instructions are intended to obtain the second water quality index corresponding to each target sub-area, and these indicators are directly targeted at the main pollution source types, such as organic pollution, nutrient salt pollution (such as TP, TN) and heavy metal pollution. Specifically, the feedback adjustment module 3 first receives the pollution source type information output by the pollution source analysis unit 201. Then, it customizes the instructions according to the preset control logic (including increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range). For example, if the main pollution source of a target sub-area is nutrient pollution, the feedback regulation module 3 may generate instructions to require the water quality collection module 1 to increase the monitoring frequency and depth of TP and TN in the area. These instructions are sent to the water quality collection module 1 through the automation control unit 300 to ensure that the collection of water quality data is more accurate and efficient, providing a reliable basis for subsequent data processing and value accounting.

[0049] Further preferably, the data processing module 4 includes a pollutant purification evaluation unit 401 and a total amount calculation unit 402: the pollutant purification evaluation unit 401 is used to receive the second water quality index, and by comparing the index parameters in the second water quality index before and after the set time interval, calculate the removal rate and purification efficiency of the pollutants corresponding to each index parameter; the total amount calculation unit 402 is used to combine the actual area and water depth data of the target wetland area, and the removal rate and purification efficiency to determine the total removal amount of various pollutants in the target wetland area within the set time interval. The calculation formula of the removal rate is: removal rate = (initial concentration-final concentration) / initial concentration × 100%, and the purification efficiency can be evaluated by the ratio of the removal rate to time to understand the removal rate of pollutants per unit time; the total amount calculation unit 402 is used to combine the actual area and water depth data of the target wetland area, and use a preset mathematical model to calculate the total purification amount of pollutants. These mathematical models include the law of conservation of mass, hydrodynamics models, etc., which are intended to accurately estimate the removal capacity of wetlands for pollutants. Specifically, the total amount calculation unit 402 will first collect the area, water depth and water quality data (including the concentration of each pollutant) of the target wetland area. Then, it inputs these data into a preset mathematical model to calculate the total amount of pollutants removed. This total amount reflects the total amount of pollutants removed by the wetland in a specific period of time and is one of the basic data for subsequent value accounting.

[0050] Further preferably, the value accounting module is preset with a conversion algorithm based on the principles of environmental economics, which is used to convert the total purification amount of pollutants into a specific service value; the conversion algorithm is a direct market assessment method, an alternative market assessment method or a hypothetical market assessment method, and quality rating is performed based on the value. Among them, the above-mentioned conversion algorithm includes selecting a direct market assessment method (such as a water resource market value method), an alternative market assessment method (such as an alternative cost method, a travel cost method) or a hypothetical market assessment method (such as a willingness to pay survey method), etc. (The above-mentioned calculation of service value based on the total purification amount of pollutants is a prior art, which is not described in detail in this embodiment). Quality rating based on this value requires the formulation of a set of reasonable rating standards to perform quality rating on the water quality purification service value of the target wetland area, such as "excellent", "good", "general", "poor", etc.

[0051] Based on the above accounting system, this embodiment also proposes an ecological wetland water purification service value accounting method, which is applied to the above accounting system; the accounting method includes the following steps:

[0052] S1, obtaining a first water quality index in a target wetland area at a set time interval;

[0053] S2. Dividing the target wetland area according to the first water quality index to obtain a plurality of target sub-areas with different main pollution sources;

[0054] S3, generating a preset control logic according to the main pollution source of the corresponding target sub-area to obtain the second water quality index corresponding to each target sub-area; wherein the preset control logic includes at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range;

[0055] S4. Determine the index parameter of the water body pollutant purification according to the second water quality index, and determine the total pollutant purification amount according to the index parameter and the value evaluation weight;

[0056] S5. Convert the total amount of pollutant purification into the ecological wetland water purification service value based on the preset water purification model.

[0057] It is obvious to those skilled in the art that the embodiments of the present invention are not limited to the details of the above exemplary embodiments, and that the embodiments of the present invention can be implemented in other specific forms without departing from the spirit or basic features of the embodiments of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the embodiments of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the embodiments of the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units, modules or devices stated in the system, device or terminal claims can also be implemented by the same unit, module or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An ecological wetland water purification service value accounting system, characterized in that: include: A water quality acquisition module (1) is used to obtain a first water quality index in a target wetland area at a set time interval; A region division module (2), used for dividing the target wetland region according to the first water quality index to obtain a plurality of target sub-regions with different main pollution sources; A feedback adjustment module (3) is used to generate an instruction for controlling the water quality acquisition module to perform automatic operation according to the main pollution source of the corresponding target sub-area, so as to control the water quality acquisition module (1) to obtain the second water quality index corresponding to each target sub-area; wherein the instruction includes at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range; A data processing module (4) is used to determine an index parameter for pollutant purification of the water body according to the second water quality index, and to determine a total pollutant purification amount according to the index parameter before and after the set time interval; The value accounting module (5) is used to convert the total amount of pollutant purification into the ecological wetland water purification service value.

2. The ecological wetland water purification service value accounting system according to claim 1 is characterized by: The water quality collection module (1) comprises a mounting carrier (10), and a sampling mechanism (20) movably connected to the mounting carrier (10), wherein the connection portion between the sampling mechanism (20) and the mounting carrier (10) is equipped with a rotating driving member (12); the sampling mechanism (20) comprises a plurality of longitudinally arranged sampling tubes (25) of different lengths, and a plurality of horizontally arranged arc-shaped sampling tubes (26), wherein the sampling ports of the plurality of sampling tubes (26) are located on the same annular path; wherein the upper ends of the sampling tubes (25) and the sampling tubes (26) are provided with a telescopic driving member (24) for driving the sampling tubes (25) and the sampling tubes (26) to move upward or downward as a whole for sampling.

3. The ecological wetland water purification service value accounting system according to claim 2 is characterized by: The rotary drive member (12) responds to the command to drive the sampling mechanism (20) to controllably rotate along the annular opening (11) provided on the mounting carrier (10), and at this time, samples are collected through the second sampling tube (26) to increase the monitoring range; and the telescopic drive member (24) responds to the command to drive the sampling tubes 1 (25) and 2 (26) on the sampling mechanism (20) to move up or down to increase the monitoring depth.

4. The ecological wetland water purification service value accounting system according to claim 1 is characterized by: The area division module (2) comprises: A pollution source analysis unit (201) is used to identify and determine multiple pollution source types based on the comparison result between the first water quality index of each target sub-area and a preset threshold value; The sub-area division unit (202) is used to divide the target wetland area according to the multiple pollution source types to form target sub-areas corresponding to multiple different main pollution source types.

5. The ecological wetland water purification service value accounting system according to claim 4 is characterized by: The feedback regulation module (3) comprises an automatic control unit (300), and the automatic control unit (300) is used to automatically select and generate instructions for controlling the water quality acquisition module (1) based on the output results of the pollution source analysis unit (201), so as to obtain a second water quality index corresponding to each target sub-area; wherein the second water quality index includes a direct evaluation index for the main pollution source type, and the main pollution source type includes at least one of organic pollution, nutrient salt pollution and heavy metal pollution.

6. The ecological wetland water purification service value accounting system according to claim 5 is characterized by: The data processing module (4) comprises: A pollutant purification evaluation unit (401) is used to receive the second water quality index, and calculate the pollutant removal rate and purification efficiency corresponding to each index parameter by comparing each index parameter in the second water quality index before and after the set time interval; The total amount calculation unit (402) is used to determine the total removal amount of various pollutants in the target wetland area within the set time interval by combining the actual area and water depth data of the target wetland area, as well as the removal rate and purification efficiency.

7. The ecological wetland water purification service value accounting system according to claim 1 is characterized by: The value accounting module (5) is preset with a conversion algorithm based on the principles of environmental economics, which is used to convert the total amount of pollutant purification into a specific service value; the conversion algorithm is a direct market valuation method, an alternative market valuation method or a hypothetical market valuation method.

8. A method for calculating the value of ecological wetland water purification services, characterized in that: The accounting method is applied to the accounting system as claimed in claim 1; the accounting method comprises the following steps: S1, obtaining a first water quality index in a target wetland area at a set time interval; S2. Divide the target wetland area according to the first water quality index to obtain a plurality of target sub-areas with different main pollution sources; S3, generating a preset control logic according to the main pollution source of the corresponding target sub-area to obtain the second water quality index corresponding to each target sub-area; wherein the preset control logic includes at least one of increasing the monitoring depth, increasing the monitoring frequency and increasing the monitoring range; S4. Determine an index parameter for purifying pollutants from a water body according to the second water quality index, and determine a total amount of pollutants purified according to the index parameter and the value evaluation weight; S5. Convert the total amount of pollutant purification into the ecological wetland water purification service value based on the preset water purification model.

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