Regional water ecological environment measuring and calculating method and system

Abstract

The invention discloses a regional water ecological environment measurement and calculation method and system, and the method comprises the steps: dividing a measurement and calculation range, setting a measurement and calculation factor, building a hydrodynamic force-water quality numerical model based on the measurement and calculation range and the measurement and calculation factor, carrying out the generalization of an internal river channel, forming a generalization river network containing the river channel and nodes, setting a boundary condition, and carrying out the measurement and calculation of the regional water ecological environment. Then performing model calibration and verification on the hydrodynamic force-water quality numerical model according to the formed generalized river network and set boundary conditions; according to the method, the function of accurately measuring and calculating the influence of the sewage draining exit site selection condition on the regional water ecological environment by adopting the hydrodynamic force-water quality numerical model is realized, and the measurement and calculation result can provide scientific basis and technical support for reasonably arranging the river sewage draining exit, so that the monitoring management of the arrangement and use of the river sewage draining exit can be enhanced; a receiving water area river regulation scheme can be conveniently provided, and the water environment capacity of the receiving water area can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water ecological environment measurement and calculation, and in particular to a method and system for measuring and calculating a regional water ecological environment. Background Art

[0002] The aquatic ecosystem is a vital and complex life-support system. It is not only home to numerous organisms but also provides indispensable resources and ecological services to humanity. However, it faces severe challenges. Protecting and restoring the aquatic ecosystem and maintaining its health and sustainability are both essential requirements and urgent tasks for achieving sustainable development in human society.

[0003] At present, the discharge of tailwater from existing industrial wastewater treatment plants generally easily affects the water environment of receiving waters and water functional zones, causing the river water quality to be extremely susceptible to pollution. This not only makes the animal and plant ecology inside the river easily damaged, but also seriously threatens the production and life of the people. At the same time, there are also safety hazards to ecological water use. Therefore, it is necessary to design a regional water ecological environment measurement method and system. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to better and effectively solve the problem that the discharge of tail water from existing industrial sewage treatment plants is generally easy to affect the water environment of receiving water areas and water functional zones, thereby causing the water quality of rivers to be easily polluted, which not only makes the animal and plant ecology inside the river easily damaged, but also seriously threatens the production and life of the people. At the same time, there are also problems of hidden dangers in ecological water safety. A regional water ecological environment measurement method and system are provided, which realizes the function of accurately measuring the impact of sewage outlet site selection conditions on the regional water ecological environment by using a hydrodynamic-water quality numerical model, and the measurement results can provide a scientific basis and technical support for the reasonable setting of sewage outlets into rivers, which can not only strengthen the monitoring and management of the setting and use of sewage outlets into rivers, but also facilitate the proposal of river channel regulation plans for receiving water areas and improve the water environment capacity of receiving water areas.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A method for calculating a regional water ecological environment comprises the following steps: Step A, dividing the measurement range and setting the measurement factors; Step B, establishing a hydrodynamic-water quality numerical model based on the measurement range and measurement factors; Step C, generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions; Step D, calibrating and validating the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain a validated hydrodynamic-water quality numerical model; Step E: Use the verified hydrodynamic-water quality numerical model to measure the measurement factors in the regional water ecological environment within the measurement range and obtain the measurement results to complete the regional water ecological environment measurement operation.

[0006] The aforementioned method for measuring a regional water ecological environment, step A, divides the measurement range and sets the measurement factors, wherein the measurement range is specifically determined based on the project sewage outlet setting plan, the upstream and downstream ecological space control areas and the ecological red line protection areas, and the upper boundary, lower boundary, left boundary and right boundary are determined, and the measurement factors are specifically ammonia nitrogen, total nitrogen and total nickel.

[0007] The aforementioned method for calculating a regional water ecological environment, step B, establishes a hydrodynamic-water quality numerical model based on the measurement range and measurement factors, wherein the hydrodynamic-water quality numerical model includes a hydrodynamic module, a convection-diffusion module, and a rainfall-runoff module. The specific steps are as follows: Step B1, constructing a hydrodynamics module, wherein the hydrodynamics module specifically uses a finite difference scheme to numerically solve the Saint-Venant equations and simulate the hydrological characteristic values ​​of water level and flow; Step B2, constructing a convection diffusion module, wherein the convection diffusion module is used to simulate the convection diffusion process of pollutants in water; Step B3: establishing a rainfall runoff module, wherein the rainfall runoff module is used to simulate rainfall runoff generation and runoff confluence.

[0008] In the aforementioned method for calculating the regional water ecological environment, the specific steps for constructing the hydrodynamics module in step B1 are as follows: Step B11, constructing the Saint-Venant equation, wherein the Saint-Venant equation is simulated by using the one-dimensional unsteady flow dynamics of the river, as shown in formula (1): ; (1) in, is the river flow area, For traffic, is the velocity of the lateral flow in the river channel direction, For time, is the horizontal coordinate along the direction of water flow, is the lateral flow of the river, is the momentum correction coefficient, is the acceleration due to gravity, is the water level, For friction resistance, the slope is lowered; Step B12: Connect the river sections at the river junction using the water balance relationship, as shown in formula (2). (2) in, To connect to the node The number of river sections, is the total number of nodes, for Time period inflow node The additional flow rate, for Period river section l inflow node of traffic, The amount of water stored at the river confluence; Step B13, use the Manning formula to simulate the steady flow of the river, as shown in formula (3), (3) in, is the cross-sectional water flow area, is the roughness, is the hydraulic radius, The bottom slope.

[0009] In the aforementioned method for calculating the regional water ecological environment, the specific steps for constructing the convection diffusion module in step B2 are as follows: Step B21, use a one-dimensional convection-diffusion model to simulate the convection-diffusion process of soluble and suspended substances in water, as shown in formula (4), (5) in, is the concentration of the simulated substance, is the average flow velocity of the river, is the convective diffusion coefficient, is the first-order attenuation coefficient of the simulated substance; Step B22, calculate the convection diffusion coefficient , where the convection diffusion coefficient Including molecular diffusion, turbulent diffusion and shear diffusion effects, and the convective diffusion coefficient The calculation process is shown in formula (6). (6) in, is the flow rate, and All are parameters.

[0010] In the aforementioned method for calculating the regional water ecological environment, the specific steps for constructing the rainfall runoff module in step B3 are as follows: Step B31, calculate the surface rainfall runoff, which is controlled by the basin area, confluence length, net rain, initial loss, filling, infiltration and roughness factors, as shown in formula (7). (7) in, is the surface rainfall runoff, is the actual rainfall at time t, is the evaporation amount at time t, is the initial loss at time t, is the infiltration rate at time t, is the surface filling volume at time t; Step B32, calculate the infiltration rate, where the infiltration rate is controlled by soil porosity, soil moisture, groundwater conditions, slope conditions and watershed storage capacity, as shown in formula (8). (8) in, is the infiltration rate, is the minimum infiltration rate, is the maximum infiltration rate, is the soil parameter characteristics; Step B33, the confluence process is calculated using the continuity equation and the motion wave equation, as shown in formula (9): ; (9) in, is the Manning number, is the width of the watershed, is the slope, For runoff depth.

[0011] The aforementioned method for measuring the regional water ecological environment, step C, generalizes the internal river channel and forms a generalized river network including river channels and nodes, and then sets boundary conditions, wherein the boundary conditions include flow boundary conditions and water level boundary conditions, the flow boundary condition is upstream, and the water level boundary condition is downstream.

[0012] In the aforementioned method for calculating a regional water ecological environment, step D is to calibrate and verify the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain a verified hydrodynamic-water quality numerical model. The specific steps are as follows: Step D1: Calibrate the hydrodynamic-water quality numerical model. Specifically, the model calibration involves using a multi-objective optimization method to obtain a non-inferior solution set for the hydrodynamic-water quality numerical model parameters. Discrete coordinated programming is then used to select the hydrodynamic-water quality numerical model parameters from the non-inferior solution set. The range and shape of the process lines simulated by the non-inferior solution set are then analyzed, and the effectiveness of the hydrodynamic-water quality numerical model is evaluated. Step D2, the hydrodynamic-water quality numerical model is verified and a verified hydrodynamic-water quality numerical model is obtained, wherein the model verification specifically compares the simulated value of the typical section water level data with the measured value and obtains the comparison result. If the comparison result is within the set range, the simulation result is considered valid.

[0013] A regional water ecological environment measurement system includes a measurement setting module, a model establishment module, a model parameter setting module, a model calibration and verification module, and a water ecological environment measurement module. The measurement setting module is used to divide the measurement range and set the measurement factors; the model establishment module is used to establish a hydrodynamic-water quality numerical model based on the measurement range and the measurement factors; the model parameter setting module is used to generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions; the model calibration and verification module is used to calibrate and verify the hydrodynamic-water quality numerical model according to the formed generalized river network and the set boundary conditions and obtain a verified hydrodynamic-water quality numerical model; the water ecological environment measurement module is used to use the verified hydrodynamic-water quality numerical model to measure the measurement factors in the regional water ecological environment within the measurement range and obtain measurement results, thereby completing the regional water ecological environment measurement operation.

[0014] The beneficial effects of the present invention are as follows: a method and system for measuring and calculating a regional water ecological environment of the present invention first divides the measurement range and sets the measurement factors, then establishes a hydrodynamic-water quality numerical model based on the measurement range and the measurement factors, then generalizes the internal river channel and forms a generalized river network including river channels and nodes, and then sets boundary conditions, and then calibrates and verifies the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain a verified hydrodynamic-water quality numerical model, and finally uses the verified hydrodynamic-water quality numerical model to calibrate and verify the regional water ecological environment within the measurement range. The measurement factors are measured and the measurement results are obtained to complete the regional water ecological environment measurement operation; it is effectively realized that the regional water ecological environment measurement method and system have the function of using the hydrodynamic-water quality numerical model to accurately measure the impact of the sewage outlet site selection conditions on the regional water ecological environment, and the measurement results can provide a scientific basis and technical support for the reasonable setting of sewage outlets into rivers. It can not only strengthen the monitoring and management of the setting and use of sewage outlets into rivers, but also promote the continuous improvement of river water quality, facilitate the proposal of river channel regulation plans for receiving waters and enhance the water environment capacity of receiving waters, and avoid damage to the animal and plant ecology inside the river. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall flow chart of a method for measuring and calculating a regional water ecological environment according to the present invention; Figure 2 is a schematic diagram of the hydrodynamic-water quality numerical model of the present invention; Figure 32 is a schematic diagram of the total nickel content measurement results in an embodiment of the present invention; Figure 4 Schematic diagram of the total nitrogen content calculation results in an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figure 1 As shown, a method for measuring and calculating a regional water ecological environment of the present invention includes the following steps: Step A, divide the measurement range and set the measurement factors, wherein the measurement range is specifically determined based on the project sewage outlet setting plan, the upstream and downstream ecological space control area and the ecological red line protection area, and the measurement factors are specifically ammonia nitrogen, total nitrogen and total nickel.

[0018] like Figure 2 As shown, step B is to establish a hydrodynamic-water quality numerical model based on the measurement range and measurement factors, wherein the hydrodynamic-water quality numerical model includes a hydrodynamic module, a convection-diffusion module and a rainfall-runoff module. The specific steps are as follows: Step B1: constructing a hydrodynamics module, wherein the hydrodynamics module specifically uses a finite difference format to numerically solve the Saint-Venant equations and simulate the hydrological characteristic values ​​of water level and flow. The specific steps of constructing the hydrodynamics module are as follows: Step B11, constructing the Saint-Venant equation, wherein the Saint-Venant equation is simulated by using the one-dimensional unsteady flow dynamics of the river, as shown in formula (1): ; (1) in, is the river flow area, For traffic, is the velocity of the lateral flow in the river channel direction, For time, is the horizontal coordinate along the direction of water flow, is the lateral flow of the river, is the momentum correction coefficient, is the acceleration due to gravity, is the water level, For friction resistance, the slope is lowered; Step B12: Connect the river sections at the river junction using the water balance relationship, as shown in formula (2). (2) in, To connect to the node The number of river sections, is the total number of nodes, for Time period inflow node The additional flow rate, for Period river section l inflow node of traffic, The amount of water stored at the river confluence; Step B13, use the Manning formula to simulate the steady flow of the river, as shown in formula (3), (3) in, is the cross-sectional water flow area, is the roughness, is the hydraulic radius, The bottom slope.

[0019] Step B2: constructing a convection diffusion module, wherein the convection diffusion module is used to simulate the convection diffusion process of pollutants in water. The specific steps of constructing the convection diffusion module are as follows: Step B21, use a one-dimensional convection-diffusion model to simulate the convection-diffusion process of soluble and suspended substances in water, as shown in formula (4), (5) in, is the concentration of the simulated substance, is the average flow velocity of the river, is the convective diffusion coefficient, is the first-order attenuation coefficient of the simulated substance; Step B22, calculate the convection diffusion coefficient , where the convection diffusion coefficient Including molecular diffusion, turbulent diffusion and shear diffusion effects, and the convective diffusion coefficient The calculation process is shown in formula (6). (6) in, is the flow rate, and All are parameters; Step B3: Establishing a rainfall runoff module, wherein the rainfall runoff module is used to simulate rainfall runoff and runoff. The specific steps of constructing the rainfall runoff module are as follows: Step B31, calculate the surface rainfall runoff, which is controlled by the basin area, confluence length, net rain, initial loss, filling, infiltration and roughness factors, as shown in formula (7). (7) in, is the surface rainfall runoff, is the actual rainfall at time t, is the evaporation amount at time t, is the initial loss at time t, is the infiltration rate at time t, is the surface filling volume at time t; Step B32, calculate the infiltration rate, where the infiltration rate is controlled by soil porosity, soil moisture, groundwater conditions, slope conditions and watershed storage capacity, as shown in formula (8). (8) in, is the infiltration rate, is the minimum infiltration rate, is the maximum infiltration rate, is the soil parameter characteristics; Step B33, the confluence process is calculated using the continuity equation and the motion wave equation, as shown in formula (9): ; (9) in, is the Manning number, is the width of the watershed, is the slope, For runoff depth.

[0020] Step C, generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions, where the boundary conditions include flow boundary conditions and water level boundary conditions, the flow boundary condition is upstream, and the water level boundary condition is downstream.

[0021] Step D: Calibrate and verify the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain the verified hydrodynamic-water quality numerical model. The specific steps are as follows: Step D1: Calibrate the hydrodynamic-water quality numerical model. Specifically, the model calibration involves using a multi-objective optimization method to obtain a non-inferior solution set for the hydrodynamic-water quality numerical model parameters. Discrete coordinated programming is then used to select the hydrodynamic-water quality numerical model parameters from the non-inferior solution set. The range and shape of the process lines simulated by the non-inferior solution set are then analyzed, and the effectiveness of the hydrodynamic-water quality numerical model is evaluated. Step D2, the hydrodynamic-water quality numerical model is verified and a verified hydrodynamic-water quality numerical model is obtained, wherein the model verification specifically compares the simulated value of the typical section water level data with the measured value and obtains the comparison result. If the comparison result is within the set range, the simulation result is considered valid.

[0022] like Figure 3 and Figure 4 As shown, in step E, the verified hydrodynamic-water quality numerical model is used to measure the measurement factors in the regional water ecological environment within the measurement range and obtain the measurement results, thereby completing the regional water ecological environment measurement operation.

[0023] A regional water ecological environment measurement system includes a measurement setting module, a model building module, a model parameter setting module, a model calibration verification module, and a water ecological environment measurement module. The measurement setting module is used to divide the measurement range and set the measurement factors. The model building module is used to build a hydrodynamic-water quality numerical model based on the measurement range and measurement factors; The model parameter setting module is used to generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions; The model calibration and verification module is used to calibrate and verify the hydrodynamic-water quality numerical model according to the formed generalized river network and the set boundary conditions and obtain a verified hydrodynamic-water quality numerical model; The water ecological environment calculation module is used to use the verified hydrodynamic-water quality numerical model to calculate the measurement factors in the regional water ecological environment within the measurement range and obtain the measurement results, thereby completing the regional water ecological environment measurement operation.

[0024] In summary, a method and system for measuring a regional water ecological environment of the present invention first divides the measurement range and sets the measurement factors, then establishes a hydrodynamic-water quality numerical model based on the measurement range and the measurement factors, then generalizes the internal river channel and forms a generalized river network including river channels and nodes, and then sets boundary conditions, and then calibrates and verifies the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain a verified hydrodynamic-water quality numerical model, and finally uses the verified hydrodynamic-water quality numerical model to calibrate the regional water ecological environment within the measurement range. The factors are calculated and the calculation results are obtained to complete the regional water ecological environment calculation operation; it is effectively realized that the regional water ecological environment calculation method and system have the function of using the hydrodynamic-water quality numerical model to accurately calculate the impact of the sewage outlet site selection conditions on the regional water ecological environment, and the calculation results can provide a scientific basis and technical support for the reasonable setting of sewage outlets into rivers. It can not only strengthen the monitoring and management of the setting and use of sewage outlets into rivers, but also promote the continuous improvement of river water quality, facilitate the proposal of river channel regulation plans for receiving waters and enhance the water environment capacity of receiving waters, and avoid damage to the animal and plant ecology inside the river.

[0025] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for calculating regional water ecological environment, characterized by: The following steps are included: Step A, dividing the measurement range and setting the measurement factors; Step B, establishing a hydrodynamic-water quality numerical model based on the measurement range and measurement factors; Step C, generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions; Step D, calibrating and validating the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain a validated hydrodynamic-water quality numerical model; Step E: Use the verified hydrodynamic-water quality numerical model to measure the measurement factors in the regional water ecological environment within the measurement range and obtain the measurement results to complete the regional water ecological environment measurement operation.

2. A method for calculating regional water ecological environment according to claim 1, characterized in that: Step A, divide the measurement range and set the measurement factors, wherein the measurement range is specifically determined based on the project sewage outlet setting plan, the upstream and downstream ecological space control area and the ecological red line protection area, and the measurement factors are specifically ammonia nitrogen, total nitrogen and total nickel.

3. A method for calculating regional water ecological environment according to claim 2, characterized in that: Step B: Establishing a hydrodynamic-water quality numerical model based on the measurement range and measurement factors, wherein the hydrodynamic-water quality numerical model includes a hydrodynamic module, a convection-diffusion module, and a rainfall-runoff module. The specific steps are as follows: Step B1, constructing a hydrodynamics module, wherein the hydrodynamics module specifically uses a finite difference scheme to numerically solve the Saint-Venant equations and simulate the hydrological characteristic values ​​of water level and flow; Step B2, constructing a convection diffusion module, wherein the convection diffusion module is used to simulate the convection diffusion process of pollutants in water; Step B3: establishing a rainfall runoff module, wherein the rainfall runoff module is used to simulate rainfall runoff generation and runoff confluence.

4. A method for calculating regional water ecological environment according to claim 3, characterized in that: The specific steps for constructing the hydrodynamics module in step B1 are as follows: Step B11, constructing the Saint-Venant equation, wherein the Saint-Venant equation is simulated by using the one-dimensional unsteady flow dynamics of the river, as shown in formula (1): ； （1） in, is the river flow area, For traffic, is the velocity of the lateral flow in the river channel direction, For time, is the horizontal coordinate along the direction of water flow, is the lateral flow of the river, is the momentum correction coefficient, is the acceleration due to gravity, is the water level, For friction resistance, the slope is lowered; Step B12: Connect the river sections at the river junction using the water balance relationship, as shown in formula (2). （2） in, To connect to the node The number of river sections, is the total number of nodes, for Time period inflow node The additional flow rate, for Period river section l inflow node of traffic, The amount of water stored at the river confluence; Step B13, use the Manning formula to simulate the steady flow of the river, as shown in formula (3), （3） in, is the cross-sectional water flow area, is the roughness, is the hydraulic radius, The bottom slope.

5. The method for calculating regional water ecological environment according to claim 3, characterized in that: The specific steps for constructing the convection diffusion module in step B2 are as follows: Step B21, use a one-dimensional convection-diffusion model to simulate the convection-diffusion process of soluble and suspended substances in water, as shown in formula (4), （5） in, is the concentration of the simulated substance, is the average flow velocity of the river, is the convective diffusion coefficient, is the first-order attenuation coefficient of the simulated substance; Step B22, calculate the convection diffusion coefficient , where the convection diffusion coefficient Including molecular diffusion, turbulent diffusion and shear diffusion effects, and the convective diffusion coefficient The calculation process is shown in formula (6). （6） in, is the flow rate, and All are parameters.

6. A method for calculating regional water ecological environment according to claim 3, characterized in that: The specific steps for constructing the rainfall runoff module in step B3 are as follows: Step B31, calculate the surface rainfall runoff, which is controlled by the basin area, confluence length, net rain, initial loss, filling, infiltration and roughness factors, as shown in formula (7). （7） in, is the surface rainfall runoff, is the actual rainfall at time t, is the evaporation amount at time t, is the initial loss at time t, is the infiltration rate at time t, is the surface filling volume at time t; Step B32, calculate the infiltration rate, where the infiltration rate is controlled by soil porosity, soil moisture, groundwater conditions, slope conditions and watershed storage capacity, as shown in formula (8). （8） in, is the infiltration rate, is the minimum infiltration rate, is the maximum infiltration rate, is the soil parameter characteristics; Step B33, the confluence process is calculated using the continuity equation and the motion wave equation, as shown in formula (9): ； （9） in, is the Manning number, is the width of the watershed, is the slope, The runoff depth.

7. The method for calculating regional water ecological environment according to claim 1, characterized in that: Step C, generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions, where the boundary conditions include flow boundary conditions and water level boundary conditions, the flow boundary condition is upstream, and the water level boundary condition is downstream.

8. The method for calculating regional water ecological environment according to claim 1, characterized in that: Step D: Calibrate and verify the hydrodynamic-water quality numerical model based on the formed generalized river network and the set boundary conditions to obtain the verified hydrodynamic-water quality numerical model. The specific steps are as follows: Step D1: Calibrate the hydrodynamic-water quality numerical model. Specifically, the model calibration involves using a multi-objective optimization method to obtain a non-inferior solution set for the hydrodynamic-water quality numerical model parameters. Discrete coordinated programming is then used to select the hydrodynamic-water quality numerical model parameters from the non-inferior solution set. The range and shape of the process lines simulated by the non-inferior solution set are then analyzed, and the effectiveness of the hydrodynamic-water quality numerical model is evaluated. Step D2, the hydrodynamic-water quality numerical model is verified and a verified hydrodynamic-water quality numerical model is obtained, wherein the model verification specifically compares the simulated value of the typical section water level data with the measured value and obtains the comparison result. If the comparison result is within the set range, the simulation result is considered valid.

9. A regional water ecological environment measurement and calculation system, the regional water ecological environment measurement and calculation system being based on the regional water ecological environment measurement and calculation method according to any one of claims 1 to 8, characterized in that: It includes a measurement setting module, a model building module, a model parameter setting module, a model calibration verification module, and a water ecological environment measurement module. The measurement setting module is used to divide the measurement range and set the measurement factors; The model building module is used to build a hydrodynamic-water quality numerical model based on the measurement range and measurement factors; The model parameter setting module is used to generalize the internal river channel and form a generalized river network including river channels and nodes, and then set boundary conditions; The model calibration and verification module is used to calibrate and verify the hydrodynamic-water quality numerical model according to the formed generalized river network and the set boundary conditions and obtain a verified hydrodynamic-water quality numerical model; The water ecological environment calculation module is used to use the verified hydrodynamic-water quality numerical model to calculate the measurement factors in the regional water ecological environment within the measurement range and obtain the measurement results, thereby completing the regional water ecological environment measurement operation.

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