Ecological management effect evaluation method and system for regional river water ecological environment

Abstract

The invention relates to an ecological management effect evaluation method and system for a regional river water ecological environment, and the method comprises the steps: S1, determining an ecological management target and constraint conditions, and obtaining an ecological management scheme of the current regional river water ecological environment; s2, updating the ecological management scheme by changing management resources, and calculating an objective function value of the updated ecological management scheme; s3, repeating the step S2 until the target function value of the updated ecological management scheme meets a preset standard, and obtaining a new ecological management scheme; and S4, applying the new ecological management scheme to the ecological environment of the regional river water, obtaining the concentration of the treated water quality pollutants, repeating the steps S2-S3 until the concentration of the treated water quality pollutants meets a water quality pollutant concentration threshold value, and obtaining an optimal ecological management scheme. According to the method, the real water quality environment quality in the designated area is checked and evaluated, and the optimal ecological management scheme is finally generated.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological governance effect evaluation, and in particular to an ecological governance effect evaluation method and system for a regional river water ecological environment. Background Art

[0002] How to ensure the restoration effect during the river ecological restoration process, identify the main factors affecting river ecological restoration so that managers can understand and regulate them in time, and characterize the changing state of the river ecosystem during the ecological restoration process, is of great scientific significance for the evaluation of river ecological restoration effects.

[0003] The existing technical solution proposes to eliminate the impact of cross-border water by deducting the pollution flux of cross-border water that exceeds the standard. Eliminating the impact of cross-border water that exceeds the standard often requires relying on the deduction of flux, and this flux calculation requires relying on river hydrological data. However, the current density of hydrological stations in my country is far from meeting the requirements for cross-border river flux deduction, and the cost of deploying flux stations along the entire cross-border river is relatively high. In addition, when the water quality of cross-border water meets the standard and there is a certain surplus, if the water quality of the assessment section meets the standard, it is actually impossible to determine whether the pollution load entering the river in the region has exceeded the requirements of ecological governance. It can be seen that whether the water quality of cross-border rivers exceeds the standard or meets the standard, the cross-border section water will affect the actual ecological governance in the region. The evaluation of the true state of river water environment quality, and the existing evaluation method cannot truly evaluate the ecological governance of the water environment quality of the region's own rivers. Summary of the invention

[0004] The purpose of the present invention is to provide a method and system for evaluating the ecological management effect of regional river water ecological environment, so as to solve the problems existing in the above-mentioned prior art and realize ecological management evaluation of the real water environment quality in a specified river area, and the data is easy to obtain and the method is simple and feasible.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A method for evaluating the ecological governance effect of regional river water ecological environment, comprising:

[0007] S1. Determine the ecological governance objectives and constraints, and obtain the ecological governance plan for the current regional river water ecological environment;

[0008] S2. By changing the governance resources, the ecological governance plan is updated, and the objective function value of the updated ecological governance plan is calculated;

[0009] S3, repeat step S2 until the objective function value of the updated ecological governance plan meets the preset standard, and obtain a new ecological governance plan;

[0010] S4. Apply the new ecological governance plan to the regional river water ecological environment, obtain the concentration of water pollutants after treatment, repeat steps S2-S3 until the concentration of water pollutants after treatment meets the water pollutant concentration threshold, and obtain the optimal ecological governance plan.

[0011] Optionally, the ecological governance objectives include: optimizing governance effects.

[0012] Optionally, the constraints include: resource utilization and engineering quality standards.

[0013] Optionally, obtaining an ecological management plan for the water ecological environment of the river in the current region includes:

[0014] S1.1. Based on the ecological governance goal and the constraints, an initial ecological governance plan is randomly generated using a Python program; wherein the initial ecological governance plan meets the resource utilization rate in the constraints;

[0015] S1.2. Calculate the objective function value of the initial ecological governance plan, and evaluate the engineering quality standard of the initial ecological governance plan according to the objective function value of the initial ecological governance plan;

[0016] S1.3. Repeat steps S1.1-S1.2 until the engineering quality standard assessment result meets the assessment threshold, thereby using the initial ecological management plan that meets the assessment threshold as the ecological management plan for the river water ecological environment in the current area.

[0017] Optionally, the governance resources include: human resources and ecological governance equipment.

[0018] Optionally, obtaining the concentration of water pollutants after treatment includes:

[0019] Obtain the precipitation in the river basin of the regional river after treatment, as well as the water quality data of the cross-border sections and the assessment sections; obtain the water pollutant concentration of the assessment section, i.e., the water pollutant concentration after treatment, based on the precipitation in the river basin and the water quality data of the cross-border sections and the assessment sections.

[0020] Optionally, the method for obtaining the water pollutant concentration of the assessment section is:

[0021] C * =(Q 1 C 1 -βQ 2 C 2 ) / (Q 1 -Q 2 )

[0022] Among them, C *To evaluate the water pollutant concentration in the section, Q 1 To evaluate the water resources of the cross section, C 1 is the water quality data of the evaluation section, β is the self-purification coefficient, Q 2 is the amount of water resources in the cross-border section, C 2 Water quality data for cross-border sections.

[0023] To achieve the above purpose, the present invention also provides an ecological management effect evaluation system for regional river water ecological environment, comprising:

[0024] The first scheme acquisition module is used to determine the ecological governance objectives and constraints, and obtain the ecological governance scheme for the current regional river water ecological environment;

[0025] An objective function acquisition module, used to update the ecological governance plan by changing the governance resources, and calculate the objective function value of the updated ecological governance plan;

[0026] The second scheme acquisition module is used to repeatedly calculate the objective function value of the updated ecological governance scheme until the objective function value of the updated ecological governance scheme meets the preset standard, thereby acquiring a new ecological governance scheme;

[0027] The third scheme acquisition module is used to apply the new ecological governance scheme to the regional river water ecological environment, obtain the concentration of water pollutants after governance, and repeatedly obtain new ecological governance schemes until the concentration of water pollutants after governance meets the water pollutant concentration threshold, thereby obtaining the optimal ecological governance scheme;

[0028] Among them, the first solution acquisition module, the objective function acquisition module, the second solution acquisition module and the third solution acquisition module are connected in sequence.

[0029] The beneficial effects of the present invention are:

[0030] The present invention obtains the ecological governance plan of the current regional river water ecological environment by determining the ecological governance objectives and constraints, and updates the ecological governance plan by changing the governance resources. This enables the present invention to continuously perform simulation optimization from randomly generated plans, thereby adapting to the dynamics and complexity of the river environment.

[0031] The present invention applies a new ecological governance scheme to the regional river water ecological environment, obtains the concentration of water pollutants after governance, uses the water pollutant concentration to verify the feasibility of the ecological governance scheme, verifies and evaluates the actual water quality environment quality in the specified area, and finally generates the optimal ecological governance scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 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 labor.

[0033] Figure 1 This is a flow chart of a method for evaluating the ecological management effect of a regional river water ecological environment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] 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.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 As shown, this embodiment discloses a method for evaluating the ecological governance effect of a regional river water ecological environment, including: S1, determining ecological governance objectives and constraints, and obtaining an ecological governance plan for the current regional river water ecological environment; S2, updating the ecological governance plan by changing governance resources, and calculating the objective function value of the updated ecological governance plan; S3, repeating step S2 until the objective function value of the updated ecological governance plan meets the preset standard, and obtaining a new ecological governance plan; S4, applying the new ecological governance plan to the regional river water ecological environment, obtaining the concentration of water pollutants after governance, repeating steps S2-S3 until the concentration of water pollutants after governance meets the water pollutant concentration threshold, and obtaining the optimal ecological governance plan.

[0037] The ecological governance objectives include: optimizing governance effects; the constraints include: resource utilization and engineering quality standards.

[0038] Obtaining an ecological governance plan for the water ecological environment of rivers in the current region includes: S1.1. Based on ecological governance objectives and constraints, using a Python program to randomly generate an initial ecological governance plan; wherein the initial ecological governance plan meets the resource utilization rate in the constraints; S1.2. Calculating the objective function value of the initial ecological governance plan, and conducting an engineering quality standard evaluation of the initial ecological governance plan based on the objective function value of the initial ecological governance plan; S1.3. Repeating steps S1.1-S1.2 until the engineering quality standard evaluation result meets the evaluation threshold, thereby using the initial ecological governance plan that meets the evaluation threshold as the ecological governance plan for the water ecological environment of rivers in the current region.

[0039] Governance resources include: human resources and ecological governance equipment.

[0040] Obtaining the concentration of water pollutants after treatment includes: obtaining the precipitation in the river basin of the regional river after treatment, as well as the water quality data of cross-border sections and assessment sections; obtaining the water pollutant concentration of the assessment section based on the precipitation in the river basin, as well as the water quality data of cross-border sections and assessment sections, that is, the water pollutant concentration after treatment.

[0041] The method for obtaining the water pollutant concentration of the assessment section is:

[0042] C * =(Q 1 C 1 -βQ 2 C 2 ) / (Q 1 -Q 2 )

[0043] Among them, C * To evaluate the water pollutant concentration in the section, Q 1 To evaluate the water resources of the cross section, C 1 is the water quality data of the evaluation section, β is the self-purification coefficient, Q 2 is the amount of water resources in the cross-border section, C 2 Water quality data for cross-border sections.

[0044] Obtain the concentration of water pollutants after treatment, including the evaluation of water quality categories, as follows:

[0045] If the concentration of water pollutants is negative, the amount of pollutants entering the river in the region is less than the self-purification capacity of the river section in the region, and the actual water quality category is determined to be surface water Class I;

[0046] If the concentration of water pollutants is positive, the actual water quality category is determined by referring to existing standards.

[0047] The method to obtain the self-purification coefficient is:

[0048] β=e-kx / u

[0049] Among them, β is the self-purification coefficient, k is the comprehensive degradation coefficient of pollutants, which is obtained through empirical coefficients, field tests or model calibration verification, x is the length of the river section from the cross-border section to the assessment section, and u is the average flow velocity of the river section.

[0050] The method to obtain water resources is:

[0051] Q=A*P*α

[0052] Among them, Q is the water resource volume of the section, A is the basin area corresponding to the section, P is the rainfall in the basin within a certain period of time, and α is the average runoff coefficient.

[0053] Obtaining the optimal ecological governance plan includes: determining whether the concentration of water pollutants in the assessment section is greater than the concentration threshold. If the concentration of water pollutants in the assessment section is greater than the concentration threshold, the water quality environment exceeds the standard; if the concentration of water pollutants in the assessment section is less than the concentration threshold, the water quality environment does not exceed the standard.

[0054] The present embodiment also discloses an ecological governance effect evaluation system for a regional river water ecological environment, comprising: a first scheme acquisition module, used to determine ecological governance objectives and constraints, and acquire an ecological governance scheme for the current regional river water ecological environment; an objective function acquisition module, used to update the ecological governance scheme by changing governance resources, and calculate the objective function value of the updated ecological governance scheme; a second scheme acquisition module, used to repeatedly calculate the objective function value of the updated ecological governance scheme until the objective function value of the updated ecological governance scheme meets the preset standard, and acquire a new ecological governance scheme; a third scheme acquisition module, used to apply the new ecological governance scheme to the regional river water ecological environment, acquire the concentration of water pollutants after governance, repeatedly acquire new ecological governance schemes, until the concentration of water pollutants after governance meets the water pollutant concentration threshold, and acquire the optimal ecological governance scheme; wherein the first scheme acquisition module, the objective function acquisition module, the second scheme acquisition module, and the third scheme acquisition module are connected in sequence.

[0055] The embodiments described above are only descriptions of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for evaluating the ecological management effect of regional river water ecological environment, characterized in that: include: S1. Determine the ecological governance objectives and constraints, and obtain the ecological governance plan for the current regional river water ecological environment; S2. By changing the governance resources, the ecological governance plan is updated, and the objective function value of the updated ecological governance plan is calculated; S3, repeat step S2 until the objective function value of the updated ecological governance plan meets the preset standard, and obtain a new ecological governance plan; S4. Apply the new ecological governance plan to the regional river water ecological environment, obtain the concentration of water pollutants after treatment, repeat steps S2-S3 until the concentration of water pollutants after treatment meets the water pollutant concentration threshold, and obtain the optimal ecological governance plan.

2. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 1 is characterized in that: The ecological governance objectives include: optimizing governance effects.

3. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 1 is characterized in that: Constraints include: resource utilization and engineering quality standards.

4. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 3 is characterized in that: The ecological management plan for obtaining the ecological environment of the river water in the current region includes: S1.

1. Based on the ecological governance goal and the constraints, an initial ecological governance plan is randomly generated using a Python program; wherein the initial ecological governance plan meets the resource utilization rate in the constraints; S1.

2. Calculate the objective function value of the initial ecological governance plan, and evaluate the engineering quality standard of the initial ecological governance plan according to the objective function value of the initial ecological governance plan; S1.

3. Repeat steps S1.1-S1.2 until the engineering quality standard assessment result meets the assessment threshold, thereby using the initial ecological management plan that meets the assessment threshold as the ecological management plan for the river water ecological environment in the current area.

5. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 1 is characterized in that: The governance resources include: human resources and ecological governance equipment.

6. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 1 is characterized in that: Obtaining the concentration of water pollutants after treatment includes: Obtain the precipitation in the river basin of the regional river after treatment, as well as the water quality data of the cross-border sections and the assessment sections; obtain the water pollutant concentration of the assessment section, i.e., the water pollutant concentration after treatment, based on the precipitation in the river basin and the water quality data of the cross-border sections and the assessment sections.

7. The method for evaluating the ecological management effect of regional river water ecological environment according to claim 6 is characterized in that: The method for obtaining the water pollutant concentration of the assessment section is: C * =(Q1C1-βQ2C2) / (Q1-Q2) Among them, C * is the concentration of water pollutants in the assessment section, Q1 is the amount of water resources in the assessment section, C1 is the water quality data of the assessment section, β is the self-purification coefficient, Q2 is the amount of water resources in the cross-border section, and C2 is the water quality data of the cross-border section.

8. An ecological governance effect evaluation system for regional river water ecological environment, characterized in that: include: The first scheme acquisition module is used to determine the ecological governance objectives and constraints, and obtain the ecological governance scheme for the current regional river water ecological environment; An objective function acquisition module, used to update the ecological governance plan by changing the governance resources, and calculate the objective function value of the updated ecological governance plan; The second scheme acquisition module is used to repeatedly calculate the objective function value of the updated ecological governance scheme until the objective function value of the updated ecological governance scheme meets the preset standard, thereby acquiring a new ecological governance scheme; The third scheme acquisition module is used to apply the new ecological governance scheme to the regional river water ecological environment, obtain the concentration of water pollutants after governance, and repeatedly obtain new ecological governance schemes until the concentration of water pollutants after governance meets the water pollutant concentration threshold, thereby obtaining the optimal ecological governance scheme; Among them, the first solution acquisition module, the objective function acquisition module, the second solution acquisition module and the third solution acquisition module are connected in sequence.

Images