Method, device and electronic equipment for adjusting submerged vegetation morphology

Abstract

The present invention discloses a method, device, and electronic device for adjusting submerged vegetation morphology. The method comprises: establishing a first mapping relationship between morphological parameters of submerged vegetation and hydrological and ecological benefit parameters; obtaining target hydrological and ecological benefit parameters for the river section to be optimized, and inputting the target hydrological and ecological benefit parameters into the first mapping relationship to obtain target morphological parameters corresponding to the submerged vegetation; and generating a submerged vegetation morphological adjustment strategy for the river section to be optimized based on the target morphological parameters. The technical solution provided by the present invention enables manual intervention in the river section to achieve the desired effects on river flow, sediment movement, material transport, and the living environment of aquatic organisms, thereby further improving the health of the river ecosystem.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and in particular to a method, device and electronic equipment for adjusting the morphology of submerged vegetation. Background Art

[0002] Aquatic vegetation has multiple functions such as purifying water quality, maintaining biodiversity, and landscape entertainment, and is widely used in the construction of ecological rivers. According to the form of vegetation in the water, it can be divided into submerged vegetation, emergent vegetation and other types. The existing technology has proposed a strategy for planting different types of vegetation for the optimized construction of river channels (refer to patent document CN105152347A), especially different types of submerged vegetation, thereby promoting the healthy and stable development of river ecosystems. However, in the actual planting scene, it was found that after some river channels were planted with various types of submerged vegetation, the river's flood discharge, sediment movement, material transport, and the survival of aquatic organisms were not better alleviated. This is inconsistent with the theoretical situation that as long as submerged preparations are planted, the ecological benefits can be improved. Therefore, how to further improve the health of the river ecosystem is an urgent problem to be solved. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a method, device, and electronic device for adjusting the morphology of submerged vegetation, thereby further improving the health of the river ecosystem.

[0004] According to a first aspect, the present invention provides a method for adjusting the morphology of submerged vegetation, the method comprising: establishing a first mapping relationship between the morphological parameters of submerged vegetation and hydrological ecological benefit parameters, the morphological parameters of the submerged vegetation including at least one of the diameter of the submerged vegetation and the arrangement density of the submerged vegetation; the hydrological ecological benefit parameters including at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic organism survival characteristics; obtaining target hydrological ecological benefit parameters of the river section to be optimized, and inputting the target hydrological ecological benefit parameters into the first mapping relationship to obtain target morphological parameters corresponding to the submerged vegetation; and generating a submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphological parameters.

[0005] Optionally, the establishment of a mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters includes: establishing a second mapping relationship, a third mapping relationship and a fourth mapping relationship between the river water level and the submerged vegetation arrangement density, the bed water shear stress and the submerged vegetation arrangement density, and the turbulence intrusion depth and the submerged vegetation arrangement density; establishing a fifth mapping relationship between the turbulence characteristic scale and the submerged vegetation diameter; combining the second mapping relationship, the third mapping relationship, the fourth mapping relationship and the fifth mapping relationship as the first mapping relationship; wherein the river water level, the bed water shear stress, the turbulence intrusion depth and the turbulence characteristic scale are respectively used to characterize river flood parameters, sediment movement parameters, material transport parameters and aquatic organism survival characteristics.

[0006] Optionally, the target hydrological and ecological benefit parameters of the river section to be optimized are obtained, and the target hydrological and ecological benefit parameters are input into the first mapping relationship to obtain the target morphological parameters corresponding to the submerged vegetation, including: based on the current river water level, current bed water shear stress, current turbulence invasion depth, current turbulence characteristic scale of the river section to be optimized and the corresponding improvement requirements, the target river water level, target bed water shear stress, target turbulence invasion depth and target turbulence characteristic scale of the river section to be optimized are calculated, wherein the target river water level, target bed water shear stress, target turbulence invasion depth and target turbulence characteristic scale of the river section to be optimized are calculated. The invasion depth and target turbulence characteristic scale are the target hydrological ecological benefit parameters; the target river water level, target bed water shear stress, and target turbulence invasion depth are respectively input into the second mapping relationship, the third mapping relationship, and the fourth mapping relationship to calculate the corresponding submerged vegetation arrangement density; the calculated submerged vegetation arrangement densities are integrated to obtain the target submerged vegetation arrangement density; the target turbulence characteristic scale is input into the fifth mapping relationship to obtain the target submerged vegetation diameter; the target submerged vegetation arrangement density and the target submerged vegetation diameter are used as the target morphological parameters.

[0007] Optionally, the submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphological parameters includes: selecting several measurement areas according to the length, width and water inundation range of the river section to be optimized; obtaining the current submerged vegetation arrangement density and the current submerged vegetation diameter in each of the measurement areas; and adjusting the current submerged vegetation arrangement density and the current submerged vegetation diameter in each of the measurement areas so that the difference between the current submerged vegetation arrangement density and the target submerged vegetation arrangement density, and the difference between the current submerged vegetation diameter and the target submerged vegetation diameter in each of the measurement areas meet preset error conditions.

[0008] Optionally, obtaining the current submerged vegetation arrangement density and the current submerged vegetation diameter in each of the measurement areas includes: obtaining an underwater morphological picture of the submerged vegetation in the current measurement area, and converting the picture into vector information; extracting the underwater height of a single submerged vegetation and the change information of the current submerged vegetation diameter along the underwater height direction from the vector information; integrating the change information of the current submerged vegetation diameter along the underwater height direction based on the underwater height of the single submerged vegetation to obtain the water retaining area of the single submerged vegetation; determining the current submerged vegetation arrangement density in the current measurement area based on the product of the water retaining area of the single submerged vegetation and the number of submerged vegetation corresponding to the unit bed surface in the current measurement area.

[0009] Optionally, the adjustment of the current submerged vegetation arrangement density and the current submerged vegetation diameter in each measurement area includes: selecting the submerged vegetation type based on the diameter error in the preset error condition, so that the difference between the change information of the submerged vegetation diameter of the selected submerged vegetation along the underwater height direction and the target submerged vegetation diameter is within the diameter error; using the selected submerged vegetation to replace the current submerged vegetation that does not meet the diameter error; calculating the single water-retaining area of the selected vegetation based on the change information of the submerged vegetation diameter of the selected submerged vegetation along the underwater height direction; adjusting the number of submerged vegetation corresponding to the unit bed surface in the current measurement area, so that the difference between the adjusted submerged vegetation arrangement density and the target submerged vegetation arrangement density is within the density error in the preset error condition, and the adjusted submerged vegetation arrangement density is the product of the adjusted number of submerged vegetation corresponding to the unit bed surface and the single water-retaining area of the selected vegetation.

[0010] Optionally, the step of establishing the second mapping relationship includes: keeping the river flow rate and submerged vegetation diameter of the river section to be optimized unchanged; uniformly changing the number of submerged vegetation per unit bed surface, and correspondingly calculating multiple submerged vegetation arrangement densities; recording the river water level corresponding to each submerged vegetation arrangement density, and fitting and generating a functional relationship according to the one-to-one correspondence between each river water level and each submerged vegetation arrangement density, and using the functional relationship as the second mapping relationship.

[0011] According to the second aspect, an embodiment of the present invention provides a device for adjusting the morphology of submerged vegetation, the device comprising: a mapping relationship unit, for establishing a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, the morphological parameters of the submerged vegetation including at least one of the diameter of the submerged vegetation and the arrangement density of the submerged vegetation; the hydrological ecological benefit parameters including at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic organism survival characteristics; a target morphology determination unit, for obtaining the target hydrological ecological benefit parameters of the river section to be optimized, and inputting the target hydrological ecological benefit parameters into the first mapping relationship to obtain the target morphological parameters corresponding to the submerged vegetation; a morphology adjustment unit, for generating a submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphological parameters.

[0012] According to the third aspect, an embodiment of the present invention provides an electronic device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect or any optional embodiment of the first aspect by executing the computer instructions.

[0013] According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect or any optional embodiment of the first aspect.

[0014] The technical solution provided by this application has the following advantages:

[0015] The technical solution provided in the present application first establishes a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, wherein the morphological parameters of the submerged vegetation include at least one of the diameter of the submerged vegetation and the arrangement density of the submerged vegetation; the hydrological ecological benefit parameters include at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic life survival characteristics; then, based on the actual ecological conditions of the river section to be optimized, the target hydrological ecological benefit parameters corresponding to the ecological benefit requirements of the river section are obtained, and the target hydrological ecological benefit parameters are input into the first mapping relationship to calculate the target morphological parameters corresponding to the submerged vegetation; then, based on the target morphological parameters, a submerged vegetation morphological adjustment strategy for the river section to be optimized is generated, the corresponding underwater machinery is controlled, and the external morphology of the submerged vegetation is adjusted according to the target morphological parameters, thereby realizing artificial intervention in the river section to be optimized, and achieving the actual required river flood discharge, sediment movement, material transport, and aquatic life survival environment effects, thereby further improving the ecosystem health of the river.

[0016] In addition, the embodiment of the present invention specifically establishes a second mapping relationship, a third mapping relationship and a fourth mapping relationship between the water level of the river channel and the submerged vegetation arrangement density, the shear stress of the bed water flow and the submerged vegetation arrangement density, and the turbulence intrusion depth and the submerged vegetation arrangement density, and establishes a fifth mapping relationship between the turbulence characteristic scale and the submerged vegetation diameter. Through the above mapping relationships, the optimal submerged vegetation diameter and submerged vegetation arrangement density are comprehensively analyzed, and the ecosystem health of the river channel is further improved by adjusting the submerged vegetation diameter and submerged vegetation arrangement density. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0018] Figure 1 A schematic diagram showing the steps of a method for adjusting the morphology of submerged vegetation in one embodiment of the present invention is shown;

[0019] Figure 2 A graph showing the second, third and fourth mapping relationships in one embodiment of the present invention;

[0020] Figure 3 A graph showing a fifth mapping relationship in one embodiment of the present invention;

[0021] Figure 4 A graph showing the change in diameter of submerged vegetation with underwater height in one embodiment of the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a submerged vegetation morphology adjustment device according to one embodiment of the present invention is shown;

[0023] Figure 6 A schematic structural diagram of an electronic device in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0025] See also Figure 1 In one embodiment, a method for adjusting the morphology of submerged vegetation comprises the following steps:

[0026] Step S101: Establish a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, where the morphological parameters of submerged vegetation include at least one of the diameter of submerged vegetation and the arrangement density of submerged vegetation; and the hydrological ecological benefit parameters include at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic organism survival characteristics.

[0027] Step S102: obtaining target hydrological and ecological benefit parameters of the river section to be optimized, and inputting the target hydrological and ecological benefit parameters into a first mapping relationship to obtain target morphological parameters corresponding to the submerged vegetation.

[0028] Step S103: generating a submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphology parameters.

[0029] Specifically, the current construction ideas of ecological rivers mainly rely on landscape science, focusing on the matching of vegetation communities. This application is based on research findings that submerged vegetation is completely submerged below the water surface, which can change the hydrodynamic conditions of the river, thereby having a vital impact on the ecological benefits. The hydrodynamic situation of vegetation depends specifically on the morphological parameters of vegetation, including but not limited to the diameter of submerged vegetation and the arrangement density of submerged vegetation (i.e. the water retaining area of vegetation corresponding to the unit area of bed surface). Therefore, this application introduces a technical solution on how to select or design appropriate morphological parameters of submerged vegetation, so as to enhance the functions of rivers in terms of river flood discharge, sediment movement, material transport, and survival of aquatic organisms.

[0030] First, the relationship between the influence of submerged vegetation morphological parameters and hydrological ecological benefits is established, namely the first mapping relationship. This can be obtained through experimental sampling and curve fitting. Then, the target ecological benefit parameters for the river section to be optimized are input into the first mapping relationship to calculate the corresponding target morphological parameters. Finally, an adjustment strategy is generated based on the target morphological parameters, thereby controlling the underwater machinery to adjust the submerged vegetation morphology underwater, thereby indirectly improving the hydrological ecological health.

[0031] In this embodiment, a mapping relationship is established mainly for the impact of submerged vegetation diameter and submerged vegetation arrangement density on hydrological ecological benefits. The specific steps are as follows:

[0032] 1. Establish the second, third, and fourth mapping relationships between the river water level and submerged vegetation density, the bed water shear stress and submerged vegetation density, and the turbulent intrusion depth and submerged vegetation density, respectively;

[0033] 2. Establish a fifth mapping relationship between the characteristic scale of turbulence and the diameter of submerged vegetation;

[0034] 3. Combining the second mapping relationship, the third mapping relationship, the fourth mapping relationship, and the fifth mapping relationship as the first mapping relationship;

[0035] 4. Among them, river water level, bed water shear stress, turbulence intrusion depth and turbulence characteristic scale are used to characterize river flood parameters, sediment movement parameters, material transport parameters and aquatic organism survival characteristics respectively.

[0036] Specifically, this embodiment proposes hydrodynamic parameters that characterize river flow, sediment movement, material transport, and aquatic life survival, namely, river water level, bed shear stress, turbulent intrusion depth, and turbulence characteristic scale. The river water level reflects the flood inundation range. By adjusting the morphological parameters of submerged vegetation, the river water level is indirectly controlled to remain below a safe level that does not inundate nearby farmland and villages, thereby regulating the probability of flooding. The bed shear stress reflects the ability of sediment on the riverbed surface to be suspended and enter the water, thereby indirectly regulating the stable movement of sediment within the river section. This ensures that water quality meets standards for usability, drinkability, and the survival of aquatic life, and that the river section is less likely to form a suspended river, ensuring safety. The turbulent intrusion depth reflects the ability to exchange materials between the submerged vegetation layer and the free surface water layer, thereby indirectly regulating the content of elements and trace substances in the water. The turbulence characteristic scale influences fish habitat and predation. Typically, the turbulence characteristic scale of a river is required to be less than 1 / 6 of the body length of fish in the current river section. Then, functional relationships between various hydrodynamic parameters and submerged vegetation density and diameter (i.e., the second, third, fourth, and fifth mapping relationships) were established. Specifically, the river water level, bed shear stress, and turbulent intrusion depth depend on vegetation density, while the characteristic scale of turbulence depends on plant diameter. Adjusting the submerged vegetation density and diameter can indirectly adjust these hydrodynamic parameters, further improving the hydrological and ecological health of the river section.

[0037] Specifically, in one embodiment, the specific steps of establishing the second mapping relationship are as follows:

[0038] 1. Maintain the river flow and submerged vegetation diameter of the river section to be optimized unchanged;

[0039] 2. Under the premise of uniform distribution of submerged vegetation per unit bed surface, change the number of submerged vegetation and calculate multiple submerged vegetation arrangement densities accordingly; the submerged vegetation arrangement density can be obtained by multiplying the number of submerged vegetation per unit bed surface by the water retaining area of a single plant, and the water retaining area of a single plant can be obtained by integrating the diameter of a single submerged plant with its height. The formula is as follows:

[0040]

[0041] Among them, M is the density of submerged vegetation, D is the diameter of submerged vegetation, h is the underwater height of vegetation, N is the number of submerged vegetation per unit area of bed surface, and V is the water retaining area corresponding to a single submerged vegetation plant, that is,

[0042] 3. After calculating multiple uniformly varying submerged vegetation arrangement densities for different amounts of submerged vegetation, use a water level recorder to record the river water level corresponding to each submerged vegetation arrangement density, and according to the one-to-one correspondence between each river water level and each submerged vegetation arrangement density, use the least squares method to fit the generated function relationship, and use this function relationship as the second mapping relationship to obtain an accurate mapping relationship between the submerged vegetation arrangement density and the river water level, so as to subsequently predict the optimal submerged vegetation arrangement density according to the target water level. Specifically, under a certain flow condition, such as Figure 2 As shown in the figure, the river water level shows a trend of first increasing sharply and then increasing slowly as the density of submerged vegetation increases.

[0043] Similarly, in one embodiment, the steps of determining the third mapping relationship and the fourth mapping relationship are:

[0044] For the river section to be optimized, the average flow velocity of the section and the diameter of the submerged vegetation are kept unchanged, and the submerged vegetation is evenly distributed along the river section. The submerged vegetation arrangement density is adjusted by changing the number of submerged vegetation per unit bed surface. For a certain density condition, the flow is measured along the water depth using equipment such as an acoustic Doppler flow meter to obtain the distribution data of the Reynolds stress along the water depth, from which the bed water shear stress (i.e., the Reynolds stress at the bed position) can be known; then the turbulent intrusion depth is measured (the Reynolds stress at this position is equal to 10% of the maximum value of the Reynolds stress distribution along the water depth). The submerged vegetation arrangement density value is continuously changed, and the corresponding bed water shear stress and turbulent intrusion depth are sampled. Then, the sampling data is used to fit the generated function curve to obtain the relationship between the bed water shear stress and the turbulent intrusion depth and the submerged vegetation arrangement density, i.e., the three mapping relationships and the fourth mapping relationship. Specifically, if Figure 2 As shown in the figure, the shear stress of bed water flow first increases and then decreases with the increase of submerged vegetation arrangement density, and the submerged vegetation arrangement density = 0.1 corresponds to the maximum value of bed water flow shear stress; when the submerged vegetation arrangement density is <0.1, there is no turbulent intrusion; when 0.1≤submerged vegetation arrangement density≤0.23, the turbulent intrusion depth is equal to the thickness of the submerged vegetation layer; when the submerged vegetation arrangement density is >0.23, the turbulent intrusion depth decreases with the increase of M and gradually approaches 0.

[0045] The relationship between the characteristic scale of turbulence and the diameter of submerged vegetation (i.e., the fifth mapping relationship) is obtained from the turbulence theory, such as Figure 3 As shown, the two have a 1:1 linear relationship.

[0046] Specifically, in one embodiment, the above step S102 specifically includes the following steps:

[0047] Step 1: Based on the current river water level, current bed water shear stress, current turbulence intrusion depth and current turbulence characteristic scale of the river section to be optimized and the corresponding improvement requirements, calculate the target river water level, target bed water shear stress, target turbulence intrusion depth and target turbulence characteristic scale of the river section to be optimized, where the target river water level, target bed water shear stress, target turbulence intrusion depth and target turbulence characteristic scale are the target hydrological ecological benefit parameters; input the target river water level, target bed water shear stress and target turbulence intrusion depth into the second mapping relationship, the third mapping relationship and the fourth mapping relationship respectively, and calculate the corresponding submerged vegetation arrangement density.

[0048] Step 2: Fuse the calculated submerged vegetation arrangement densities to obtain the target submerged vegetation arrangement density.

[0049] Step 3: Input the target turbulence characteristic scale into the fifth mapping relationship to obtain the target submerged vegetation diameter.

[0050] Step 4: Use the target submerged vegetation arrangement density and target submerged vegetation diameter as target morphological parameters.

[0051] Specifically, in this embodiment, it is first necessary to measure the above-mentioned hydrodynamic parameters of the river section to be optimized. By methods including but not limited to visits, geological exploration, etc. (for example, the phosphorus content of the current river section water body exceeds the standard, the river channel is seriously silted, and the silt is mainly fine-grained sticky sand), the indicators of the flood discharge capacity, self-dredging capacity, submerged range, and fish population of the river section to be optimized are understood. In order to ensure water quality, water environment, biological health, and the safety of living conditions around the river channel, improvement requirements are formulated around the relevant indicators, and according to the improvement requirements and the current hydrodynamic parameters, the target river channel water level, target bed surface water flow shear stress, target turbulent intrusion depth, and target turbulent characteristic scale after improvement are calculated. Then, the target river channel water level, target bed surface water flow shear stress, and target turbulent intrusion depth are input into the second, third, and fourth mapping relationships respectively, and three submerged vegetation arrangement densities are output respectively. In order to make the target submerged vegetation arrangement density meet the target river channel water level, target bed surface water flow shear stress, and target turbulent intrusion depth as much as possible, the three submerged vegetation arrangement densities output above are fused, including but not limited to the mean method and the weighted average method. This embodiment uses an average value to average the three submerged vegetation density outputs to obtain a target submerged vegetation density. Simultaneously, the target turbulence characteristic scale is input into the fifth mapping relationship to output a target submerged vegetation diameter. Finally, based on the final target submerged vegetation diameter and target submerged vegetation density, the diameter and number of submerged vegetation in the optimized river section are adjusted, indirectly improving the hydrological and ecological health.

[0052] Specifically, in one embodiment, the above step S103 specifically includes the following steps:

[0053] Step 5: Select several measurement areas based on the length, width and water inundation range of the river section to be optimized.

[0054] Step 6: Obtain the current submerged vegetation arrangement density and current submerged vegetation diameter in each measurement area.

[0055] Step 7: Adjust the current submerged vegetation arrangement density and the current submerged vegetation diameter in each measurement area so that the difference between the current submerged vegetation arrangement density and the target submerged vegetation arrangement density, and the difference between the current submerged vegetation diameter and the target submerged vegetation diameter in each measurement area meet the preset error conditions.

[0056] Specifically, after determining the target submerged vegetation density and target submerged vegetation diameter, the river section to be optimized is first divided into several measurement areas based on its length, width, and inundation range. This allows optimization to be performed in small areas, which further improves accuracy compared to large areas. Next, the current submerged vegetation density and diameter within each measurement area are measured. The specific steps include:

[0057] 1. Obtain underwater morphological images of submerged vegetation in the current measurement area and convert the images into vector information.

[0058] 2. Extract the underwater height of a single submerged plant and the change information of the current submerged plant diameter along the underwater height direction from the vector information.

[0059] 3. Based on the underwater height of a single submerged plant, the change in the diameter of the current submerged plant along the underwater height direction is integrated to obtain the water retaining area of the single submerged plant;

[0060] 4. Determine the current submerged vegetation arrangement density in the current measurement area based on the product of the water retaining area of a single submerged vegetation and the number of submerged vegetation corresponding to a unit bed surface in the current measurement area.

[0061] Specifically, an underwater camera is used to take pictures and record the underwater morphology of vegetation, and Matlab software is used to convert the picture information into vector information. Then, the vector information containing multiple submerged vegetation can be statistically analyzed based on the normal distribution method to obtain the diameter D of the submerged vegetation representing the current measurement area. 当前 Vertical changes and the underwater height of vegetation h 当前 Compared with the method of direct underwater sampling and measurement, it is more efficient and accurate. It can then accurately calculate the water retaining area V corresponding to a single plant in the current state. 当前 . Please refer to the above formula for calculation method. I will not elaborate on this here. Accordingly, the submerged vegetation density M 当前 =N 当前 ·V 当前Among them, N 当前 It is the number of submerged vegetation per unit area of the river bed in the current section.

[0062] Then, the current submerged vegetation density and diameter within each measurement area are adjusted, and engineering measures are used to equalize the current and target morphological parameters of the submerged vegetation, thereby completing the optimized construction of the ecological river channel. To prevent the optimization algorithm from entering an infinite loop in a dead zone, this embodiment exits the adjustment strategy when the difference between the current and target submerged vegetation density, or between the current and target submerged vegetation diameter, meets a preset error condition.

[0063] Specifically, in one embodiment, the above step seven specifically includes the following steps:

[0064] Step 8: Selecting a submerged vegetation type based on the diameter error in the preset error condition, so that the difference between the variation information of the submerged vegetation diameter of the selected submerged vegetation along the underwater height direction and the target submerged vegetation diameter is within the diameter error.

[0065] Step 9: Use the selected submerged vegetation to replace the current submerged vegetation that does not meet the diameter tolerance.

[0066] Step 10: Calculate the water retaining area of a single plant of the selected submerged vegetation based on the variation information of the diameter of the selected submerged vegetation along the underwater height direction.

[0067] Step 11: Adjust the number of submerged vegetation corresponding to the unit bed surface in the current measurement area so that the difference between the adjusted submerged vegetation arrangement density and the target submerged vegetation arrangement density is within the density error in the preset error condition. The adjusted submerged vegetation arrangement density is the product of the adjusted number of submerged vegetation corresponding to the unit bed surface and the single water retaining area of the selected vegetation.

[0068] Specifically, in this embodiment, the method for adjusting the diameter of submerged vegetation is achieved by replacing the vegetation type instead of mechanical pruning, so as to achieve the purpose of recycling submerged vegetation and reduce economic costs. As the underwater height changes, the error between the diameter change of the replaced submerged vegetation and the target submerged vegetation diameter is within the diameter error range. Based on the diameter of the replaced submerged vegetation, the method for adjusting the submerged vegetation arrangement density is achieved by changing the number of submerged vegetation corresponding to the unit bed surface. For details, please refer to the formula for calculating the submerged vegetation arrangement density in the above steps S101 to S103, which will not be repeated here.

[0069] Specifically, in a specific embodiment, it is known that the length of the river section to be optimized is about 10 km, the average river width is 20 m, and the annual flooding range is about 11,000 m 2Therefore, a total of 6 measurement areas were arranged at intervals of 2 km along the river direction, and each measurement area was a 2m×2m square. The submerged vegetation density M corresponding to each area in the current state of measurement was 当前 , diameter of submerged vegetation D 当前 Take photos with drones and get the number of submerged vegetation per unit bed N 当前 =16.5; Use underwater camera to take pictures and record the underwater morphology of vegetation, and use Matlab software to convert the picture information into data information to obtain D 当前 Vertical changes and underwater height of vegetation h 当前 ,like Figure 4 As shown. Correspondingly, the submerged vegetation density M 当前 =0.268.

[0070] Therefore, in order to make M 当前 Equal to M 目标 ,but

[0071]

[0072] In other words, the number of plants per unit area of bed is increased from 16.5 plants / m 2 Reduced to 6.16 plants / m 2 , which can meet the requirements of optimized construction.

[0073] Through the above steps, the technical solution provided by this application first establishes a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, wherein the morphological parameters of submerged vegetation include at least one of the diameter of submerged vegetation and the arrangement density of submerged vegetation; the hydrological ecological benefit parameters include at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic biological survival characteristics; then, based on the actual ecological conditions of the river section to be optimized, the target hydrological ecological benefit parameters corresponding to the ecological benefit requirements of the river section are obtained, and the target hydrological ecological benefit parameters are input into the first mapping relationship to calculate the target morphological parameters corresponding to the submerged vegetation; then, based on the target morphological parameters, a morphological adjustment strategy for the submerged vegetation section to be optimized is generated, the corresponding underwater machinery is controlled, and the external morphology of the submerged vegetation is adjusted according to the target morphological parameters, so as to realize the effect of artificial intervention in the river section to be optimized to achieve the actual requirements of river flood discharge, sediment movement, material transport, and aquatic biological survival environment, thereby further improving the ecosystem health of the river.

[0074] In addition, the embodiment of the present invention specifically establishes the second mapping relationship, the third mapping relationship and the fourth mapping relationship between the river water level and the submerged vegetation arrangement density, the bed water shear stress and the submerged vegetation arrangement density, and the turbulence intrusion depth and the submerged vegetation arrangement density, and establishes the fifth mapping relationship between the turbulence characteristic scale and the submerged vegetation diameter. Through the above mapping relationships, the optimal submerged vegetation diameter and submerged vegetation arrangement density are comprehensively analyzed, and the ecosystem health of the river is further improved by adjusting the submerged vegetation diameter and the submerged vegetation arrangement density.

[0075] like Figure 5 As shown, this embodiment also provides a device for adjusting the morphology of submerged vegetation, the device comprising:

[0076] Mapping unit 101 is configured to establish a first mapping relationship between morphological parameters of submerged vegetation and hydrological and ecological benefit parameters. The morphological parameters of submerged vegetation include at least one of submerged vegetation diameter and submerged vegetation density; the hydrological and ecological benefit parameters include at least one of river channel flood parameters, sediment movement parameters, material transport parameters, and aquatic organism survival characteristics. For details, see the description of step S101 in the above method embodiment and will not be repeated here.

[0077] Target morphology determination unit 102 is configured to obtain target hydro-ecological benefit parameters for the river section to be optimized and input the target hydro-ecological benefit parameters into a first mapping relationship to obtain target morphology parameters corresponding to the submerged vegetation. For details, see the description of step S102 in the above method embodiment and will not be repeated here.

[0078] The morphology adjustment unit 103 generates a morphology adjustment strategy for the submerged vegetation of the river section to be optimized based on the target morphology parameters. For details, please refer to the description of step S103 in the above method embodiment, which will not be repeated here.

[0079] The device for adjusting the submerged vegetation morphology provided in an embodiment of the present invention is used to execute the method for adjusting the submerged vegetation morphology provided in the above embodiment. Its implementation method and principle are the same. For details, please refer to the relevant description of the above method embodiment and will not be repeated here.

[0080] Through the coordinated cooperation of the above-mentioned components, the technical solution provided by this application first establishes a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, wherein the morphological parameters of submerged vegetation include at least one of the diameter of submerged vegetation and the arrangement density of submerged vegetation; the hydrological ecological benefit parameters include at least one of the river flood discharge parameters, sediment movement parameters, material transport parameters, and aquatic biological survival characteristics; then, based on the actual ecological conditions of the river section to be optimized, the target hydrological ecological benefit parameters corresponding to the ecological benefit requirements of the river section are obtained, and the target hydrological ecological benefit parameters are input into the first mapping relationship to calculate the target morphological parameters corresponding to the submerged vegetation; then, based on the target morphological parameters, a morphological adjustment strategy for the submerged vegetation section to be optimized is generated, the corresponding underwater machinery is controlled, and the external morphology of the submerged vegetation is adjusted according to the target morphological parameters, so as to realize the effect of artificial intervention in the river section to be optimized to achieve the actual requirements of river flood discharge, sediment movement, material transport, and aquatic biological survival environment, thereby further improving the ecosystem health of the river.

[0081] In addition, the embodiment of the present invention specifically establishes the second mapping relationship, the third mapping relationship and the fourth mapping relationship between the river water level and the submerged vegetation arrangement density, the bed water shear stress and the submerged vegetation arrangement density, and the turbulence intrusion depth and the submerged vegetation arrangement density, and establishes the fifth mapping relationship between the turbulence characteristic scale and the submerged vegetation diameter. Through the above mapping relationships, the optimal submerged vegetation diameter and submerged vegetation arrangement density are comprehensively analyzed, and the ecosystem health of the river is further improved by adjusting the submerged vegetation diameter and the submerged vegetation arrangement density.

[0082] Figure 6 An electronic device according to an embodiment of the present invention is shown, which includes a processor 901 and a memory 902, which can be connected via a bus or other means. Figure 6 The bus connection is taken as an example.

[0083] The processor 901 may be a central processing unit (CPU). The processor 901 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0084] Memory 902, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as the program instructions / modules corresponding to the methods in the above-described method embodiments. Processor 901 executes the non-transitory software programs, instructions, and modules stored in memory 902 to perform various processor functions and data processing, thereby implementing the methods in the above-described method embodiments.

[0085] The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created by the processor 901, etc. In addition, the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 902 may optionally include a memory remotely located relative to the processor 901, and these remote memories may be connected to the processor 901 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0086] One or more modules are stored in the memory 902 and, when executed by the processor 901 , perform the method in the above method embodiment.

[0087] The specific details of the above electronic device can be understood by referring to the corresponding descriptions and effects in the above method embodiments, and will not be repeated here.

[0088] Those skilled in the art will appreciate that all or part of the processes in the above-described embodiments can be implemented by instructing related hardware through a computer program. The implemented program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-described embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD). The storage medium can also include a combination of the above-mentioned types of memory.

[0089] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for adjusting the morphology of submerged vegetation, characterized in that: The method comprises: Establishing a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, wherein the morphological parameters of the submerged vegetation include at least one of the diameter of the submerged vegetation and the arrangement density of the submerged vegetation; the hydrological ecological benefit parameters include at least one of the river flood discharge parameter, the sediment movement parameter, the material transport parameter, and the survival characteristics of aquatic organisms; establishing the first mapping relationship between the morphological parameters of the submerged vegetation and the hydrological ecological benefit parameters, including: establishing a second mapping relationship, a third mapping relationship, and a fourth mapping relationship between the river water level and the arrangement density of the submerged vegetation, the bed water shear stress and the arrangement density of the submerged vegetation, and the turbulent intrusion depth and the arrangement density of the submerged vegetation; establishing a fifth mapping relationship between the turbulent characteristic scale and the diameter of the submerged vegetation; combining the second mapping relationship, the third mapping relationship, the fourth mapping relationship, and the fifth mapping relationship as the first mapping relationship; wherein the river water level, the bed water shear stress, the turbulent intrusion depth, and the turbulent characteristic scale are used to characterize the river flood discharge parameter, the sediment movement parameter, the material transport parameter, and the survival characteristics of aquatic organisms, respectively; Obtaining target hydrological and ecological benefit parameters of the river section to be optimized, and inputting the target hydrological and ecological benefit parameters into the first mapping relationship to obtain target morphological parameters corresponding to the submerged vegetation; A submerged vegetation morphology adjustment strategy for the river section to be optimized is generated based on the target morphology parameters.

2. The method according to claim 1, characterized in that Obtaining target hydrological and ecological benefit parameters of the river section to be optimized, and inputting the target hydrological and ecological benefit parameters into the first mapping relationship to obtain target morphological parameters corresponding to submerged vegetation, including: Calculate the target river water level, target bed water shear stress, target turbulence intrusion depth, and target turbulence characteristic scale of the river section to be optimized based on the current river water level, current bed water shear stress, current turbulence intrusion depth, and current turbulence characteristic scale of the river section to be optimized and the corresponding improvement requirements, wherein the target river water level, target bed water shear stress, target turbulence intrusion depth, and target turbulence characteristic scale are the target hydrological ecological benefit parameters; Inputting the target river channel water level, target bed surface water shear stress, and target turbulent intrusion depth into the second mapping relationship, the third mapping relationship, and the fourth mapping relationship, respectively, to calculate the corresponding submerged vegetation arrangement density; The calculated submerged vegetation arrangement densities are integrated to obtain the target submerged vegetation arrangement density; Inputting the target turbulence characteristic scale into a fifth mapping relationship to obtain a target submerged vegetation diameter; The target submerged vegetation arrangement density and the target submerged vegetation diameter are used as the target morphological parameters.

3. The method according to claim 2, characterized in that Generating a submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphology parameters includes: Selecting several measurement areas based on the length, width and water inundation range of the river section to be optimized; Obtaining the current submerged vegetation arrangement density and the current submerged vegetation diameter in each of the measurement areas; The current submerged vegetation arrangement density and the current submerged vegetation diameter in each measurement area are adjusted so that the difference between the current submerged vegetation arrangement density and the target submerged vegetation arrangement density, and the difference between the current submerged vegetation diameter and the target submerged vegetation diameter in each measurement area meet the preset error conditions.

4. The method according to claim 3, characterized in that The obtaining of the current submerged vegetation arrangement density and the current submerged vegetation diameter in each of the measurement areas includes: Obtain underwater morphological images of submerged vegetation in the current measurement area and convert the images into vector information; Extracting the underwater height of a single submerged plant and information on the change in the diameter of the current submerged plant along the underwater height direction from the vector information; Integrating information on changes in the diameter of the current submerged vegetation along the underwater height direction based on the underwater height of the single submerged vegetation to obtain a water retaining area of the single submerged vegetation; The current submerged vegetation arrangement density in the current measurement area is determined based on the product of the water retaining area of the single submerged vegetation and the number of submerged vegetation corresponding to the unit bed surface in the current measurement area.

5. The method according to claim 4, characterized in that The adjusting of the current submerged vegetation arrangement density and the current submerged vegetation diameter in each measurement area includes: Selecting a submerged vegetation type based on the diameter error in the preset error condition so that a difference between information on a change in diameter of the selected submerged vegetation along the underwater height direction and the diameter of the target submerged vegetation is within the diameter error; replacing the current submerged vegetation that does not meet the diameter tolerance with the selected submerged vegetation; Calculate the water retaining area of a single plant of the selected submerged vegetation based on the variation information of the diameter of the selected submerged vegetation along the underwater height direction; Adjust the number of submerged vegetation corresponding to the unit bed surface in the current measurement area so that the difference between the adjusted submerged vegetation arrangement density and the target submerged vegetation arrangement density is within the density error in the preset error condition, and the adjusted submerged vegetation arrangement density is the product of the adjusted number of submerged vegetation corresponding to the unit bed surface and the single water retaining area of the selected vegetation.

6. The method according to claim 1, characterized in that The step of establishing the second mapping relationship includes: Maintaining the river flow rate and the diameter of submerged vegetation in the river section to be optimized unchanged; Uniformly change the number of submerged vegetation per unit bed surface, and calculate the arrangement density of multiple submerged vegetation accordingly; The river water level corresponding to each submerged vegetation arrangement density is recorded, and a functional relationship is generated according to the one-to-one correspondence between each river water level and each submerged vegetation arrangement density, and the functional relationship is used as the second mapping relationship.

7. A device for adjusting the morphology of submerged vegetation, characterized in that: The device comprises: A mapping relationship unit is used to establish a first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters, wherein the morphological parameters of the submerged vegetation include at least one of the diameter of the submerged vegetation and the arrangement density of the submerged vegetation; the hydrological ecological benefit parameters include at least one of the river flood parameters, sediment movement parameters, material transport parameters, and the survival characteristics of aquatic organisms; the establishment of the first mapping relationship between the morphological parameters of submerged vegetation and the hydrological ecological benefit parameters includes: respectively establishing the river water level and the arrangement density of the submerged vegetation, the bed water shear stress and the arrangement density of the submerged vegetation, and the hydrological ecological benefit parameters. a second mapping relationship, a third mapping relationship, and a fourth mapping relationship between the depth of turbulence invasion and the submerged vegetation arrangement density; establishing a fifth mapping relationship between the turbulence characteristic scale and the diameter of the submerged vegetation; combining the second mapping relationship, the third mapping relationship, the fourth mapping relationship, and the fifth mapping relationship as the first mapping relationship; wherein the river water level, the bed water shear stress, the turbulence invasion depth, and the turbulence characteristic scale are respectively used to characterize river flood parameters, sediment movement parameters, material transport parameters, and aquatic organism survival characteristics; a target morphology determination unit, configured to obtain target hydrological and ecological benefit parameters of the river section to be optimized, and input the target hydrological and ecological benefit parameters into the first mapping relationship to obtain target morphology parameters corresponding to the submerged vegetation; A morphology adjustment unit generates a submerged vegetation morphology adjustment strategy for the river section to be optimized based on the target morphology parameters.

8. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method according to any one of claims 1 to 6.

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