Method and device for inhibiting filamentous green algae based on water level regulation of water area

Abstract

The application discloses a kind of based on water level regulation and control filamentous green algae inhibition method and device, it is related to water ecological restoration technical field, the method includes: obtaining the water surface illumination intensity of current moment monitoring water area, bottom average illumination intensity and water depth, the first coverage of filamentous green algae and the second coverage of historical moment;Based on water surface illumination intensity, bottom average illumination intensity and water depth, extinction coefficient is determined;Based on extinction coefficient, water surface illumination intensity, the photosynthetic respiration compensation point threshold value of filamentous green algae and the minimum illumination requirement threshold value of submerged plant, the first water level of inhibiting filamentous green algae and the second water level of protecting submerged plant are determined;Based on the first coverage and the second coverage, determine coverage variation;When coverage variation is greater than preset coverage variation, based on the first water level and the second water level, determine the target water level of monitoring water area.Through the application, by regulating and controlling water level, the risk of filamentous green algae outbreak is identified in advance and accurately intervened.

Description

Technical Field

[0001] This invention relates to the field of aquatic ecological restoration technology, specifically to a method and device for inhibiting filamentous green algae based on water level regulation in aquatic areas. Background Technology

[0002] In the early stages of ecological restoration in shallow lakes and reservoirs, the submerged plant community structure is not yet stable, water transparency is high, and bottom sediments are directly exposed to sunlight. Simultaneously, large amounts of nutrients such as nitrogen and phosphorus are released from the sediments, making them highly susceptible to large-scale outbreaks of filamentous green algae. Filamentous green algae are characterized by rapid growth and strong resource competition; they can inhibit the growth of submerged plants through shading and entanglement, severely hindering the ecological restoration process. Currently, the control of filamentous green algae largely relies on manual cleaning and chemical treatment, which generally suffers from problems such as delayed intervention, high costs, and the potential for secondary pollution. Summary of the Invention

[0003] This invention provides a method and device for suppressing filamentous green algae based on water level regulation, so as to achieve early identification and precise intervention of the risk of filamentous green algae outbreaks.

[0004] In a first aspect, the present invention provides a method for inhibiting filamentous green algae based on water level regulation in aquatic environments, the method comprising: The system acquires the surface light intensity, bottom average light intensity, and water depth of the monitored water area at the current moment, monitors the first coverage of filamentous green algae in the water area, and the second coverage of filamentous green algae at a historical moment after a preset time period based on the current moment. The extinction coefficient is determined based on the surface light intensity, the average light intensity at the bottom, and the water depth. Based on the extinction coefficient, the light intensity on the water surface, and the first preset light survival threshold of filamentous green algae, the first water level is determined, wherein the first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of filamentous green algae, and the first water level is the lowest water level that inhibits the growth of filamentous green algae. Based on the extinction coefficient, the light intensity on the water surface, and the second preset light survival threshold for submerged plants in the monitored water area, the second water level is determined. The second preset light survival threshold is the minimum light requirement threshold for the growth of submerged plants, and the second water level is the highest water level that meets the growth requirements of submerged plants. Based on the first and second coverage, the change in coverage of filamentous green algae is determined; When the change in coverage exceeds the preset change in coverage, the target water level of the monitored water area is determined based on the first water level and the second water level in order to inhibit the growth of filamentous green algae.

[0005] In one optional implementation, the extinction coefficient is determined based on the surface light intensity, the average bottom light intensity, and the water depth, including: The extinction coefficient is determined based on the surface light intensity, the average light intensity at the bottom, and the water depth using a pre-defined light attenuation model.

[0006] In one optional implementation, when the change in coverage exceeds a preset change in coverage, a target water level for the monitored water area is determined based on a first water level and a second water level, including: Compare the second water level with the first water level to obtain the comparison result; Based on the comparison results, the target water level is determined.

[0007] In one alternative implementation, determining the target water level based on the comparison results includes: When the comparison result indicates that the first water level is less than or equal to the second water level, the second water level is determined as the target water level; or, When the comparison result indicates that the first water level is greater than the second water level, the coordinated control mode is activated: within the preset submerged plant tolerance time window, the first water level is determined as the target water level, and the algae inhibitor dosing instruction is activated. The algae inhibitor dosing instruction is used to instruct the addition of a submerged plant-friendly algae inhibitor to the monitored water area; after the change in coverage is less than the preset change in coverage, the target water level is adjusted back to a depth less than or equal to the second water level.

[0008] In one alternative implementation, the method further includes: When the change in coverage is less than or equal to the preset change in coverage, the preset light intensity range for photosynthesis of filamentous green algae is obtained. The target water level is determined based on the average light intensity of the bottom layer and the preset light intensity range.

[0009] In one optional implementation, the target water level is determined based on the average light intensity of the underlying layer and a preset light intensity range, including: When the average light intensity at the bottom is within the preset light intensity range, the smaller of the first water level and the second water level is determined as the target water level. or, When the average light intensity at the bottom layer is not within the preset light intensity range, the current water level of the monitored water area will be determined as the target water level.

[0010] Secondly, the present invention provides a device for inhibiting filamentous green algae based on water level regulation in aquatic environments, the device comprising: The acquisition module is used to acquire the surface light intensity, bottom average light intensity and water depth of the monitored water area at the current time, monitor the first coverage of filamentous green algae in the water area, and the second coverage of filamentous green algae at a historical time after a preset time period based on the current time. The first determining module is used to determine the extinction coefficient based on the surface light intensity, the average light intensity at the bottom, and the water depth. The second determining module is used to determine the first water level based on the extinction coefficient, the light intensity of the water surface, and the first preset light survival threshold of filamentous green algae. The first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of filamentous green algae, and the first water level is the lowest water level that inhibits the growth of filamentous green algae. The third determining module is used to determine the second water level based on the extinction coefficient, the light intensity on the water surface, and the second preset light survival threshold of submerged plants in the monitored water area. The second preset light survival threshold is the minimum light requirement threshold for the growth of submerged plants, and the second water level is the highest water level that meets the growth requirements of submerged plants. The fourth determining module is used to determine the change in the coverage of filamentous green algae based on the first coverage and the second coverage. The fifth determining module is used to determine the target water level of the monitored water area based on the first water level and the second water level when the change in coverage is greater than the preset change in coverage, so as to inhibit the growth of filamentous green algae.

[0011] Thirdly, 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 computer instructions to perform the above-described method for inhibiting filamentous green algae based on water level regulation in the first aspect or any corresponding embodiment thereof.

[0012] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the method for inhibiting filamentous green algae based on water level regulation in the first aspect or any corresponding embodiment described above.

[0013] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the above-described first aspect or any corresponding embodiment of the water level control-based method for inhibiting filamentous green algae.

[0014] This invention first calculates the extinction coefficient based on the surface light intensity, the average light intensity at the bottom, and the water depth. Then, based on the extinction coefficient, and constrained by the light threshold for the photosynthetic respiration compensation point of filamentous green algae and the minimum growth light threshold for submerged plants, it obtains the minimum water level (the first water level) to inhibit filamentous green algae growth and the maximum water level (the second water level) to protect submerged plants. The optimal target water level is then matched with the change in filamentous green algae coverage. This achieves early identification of the risk of filamentous green algae outbreaks and precise water level control. Compared to the shortcomings of related technologies, such as manual cleaning, post-outbreak algae removal remediation, delayed control, and the risk of secondary pollution, this invention changes the light environment for algae growth through water level control, fundamentally inhibiting rapid algae growth from an ecological mechanism perspective. This effectively suppresses algae outbreaks, protects the growth of submerged plants, significantly improves the success rate of ecological restoration projects, and reduces operation and maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic flowchart of a method for inhibiting filamentous green algae based on water level control according to an embodiment of the present invention; Figure 2 This is a structural block diagram of a filamentous green algae inhibition system based on water level regulation according to an embodiment of the present invention; Figure 3 This is a structural block diagram of a filamentous green algae suppression device based on water level regulation according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] According to an embodiment of the present invention, a method for inhibiting filamentous green algae based on water level regulation is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0021] This embodiment provides a method for inhibiting filamentous green algae based on water level regulation. Figure 1 This is a flowchart of a method for inhibiting filamentous green algae based on water level control according to an embodiment of the present invention, as shown below. Figure 1 As shown, the process includes the following steps: S101, obtain the surface light intensity, bottom average light intensity and water depth of the monitored water area at the current time, monitor the first coverage of filamentous green algae in the water area, and the second coverage of filamentous green algae at a historical time after a preset time period based on the current time.

[0022] Specifically, the monitored waters refer to rivers, lakes, and other water bodies that require risk control for filamentous green algae.

[0023] The filamentous green algae in the monitored waters are filamentous and flocculent in shape, and grow and reproduce at an extremely fast rate. They can compete for the water's light and nitrogen and phosphorus nutrients, while inhibiting the growth of submerged plants by entanglement and shading.

[0024] Water surface illumination intensity refers to the intensity of natural sunlight radiation at the surface of a monitored body of water, reflecting the overall level of light energy input to the water body. Water surface illumination intensity is affected by factors such as weather, time of day, cloud cover, and season. For example, illumination intensity can be obtained by installing a light intensity sensor within the water body.

[0025] The average bottom light intensity refers to the average intensity of natural sunlight radiation in the bottom layer of a monitored water body. Here, the bottom layer can be the near-bottom water layer 0-20 cm below the mud surface, which is the core area for the attachment, growth, and proliferation of filamentous green algae and planktonic filamentous green algae. For example, light sensors are installed in the monitored water body to obtain the light intensity at various collection points. The average value calculated based on the light intensity at each collection point is the average bottom light intensity.

[0026] The water depth of a monitored area can be determined by setting up multiple water depth sampling points in the monitored area and averaging the values ​​of these multiple sampling points.

[0027] Coverage refers to the percentage of the monitored water area covered by filamentous green algae. The first coverage is the current coverage of the monitored water area, used to quantify the real-time growth scale of filamentous green algae. The second coverage can also be referred to as historical coverage.

[0028] The preset duration is a fixed time period for retrospective comparative analysis of the growth dynamics of filamentous green algae. It can be determined according to the differences in the growth rate of filamentous green algae in different monitored waters and different seasons. For example, the preset duration can be 3-7 days.

[0029] In one possible implementation, the coverage of filamentous green algae is acquired in real time using remote sensing imagery.

[0030] In another possible implementation, UAV multispectral imagery or underwater video recognition and analysis methods are used to quantitatively calculate coverage through image inversion algorithms.

[0031] S102, based on the light intensity at the water surface, the average light intensity at the bottom, and the water depth, determine the extinction coefficient.

[0032] Specifically, the extinction coefficient is a quantitative parameter that characterizes the ability of water to absorb and scatter light. The larger the value, the worse the light transmittance of the water and the faster the light attenuates as the water depth increases; the smaller the value, the clearer the water and the stronger the light penetration ability.

[0033] S103, based on the extinction coefficient, the light intensity on the water surface, and the first preset light survival threshold of filamentous green algae, the first water level is determined.

[0034] Among them, the first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of filamentous green algae, and the first water level is the lowest water level that inhibits the growth of filamentous green algae.

[0035] Specifically, under a first preset light survival threshold, the organic matter produced by photosynthesis in filamentous green algae is exactly equal to the organic matter consumed by respiration, resulting in a net photosynthetic rate of zero. When the light intensity at the bottom of the water body is lower than the first preset light survival threshold, the filamentous green algae cannot grow normally, spread, or even gradually die. For example, the first preset light survival threshold can be obtained through laboratory work, literature reviews, etc.

[0036] The first water level refers to the minimum water level under the current water quality and lighting conditions that allows the light intensity at the bottom of the water body to just fall below the survival threshold of filamentous green algae, thus inhibiting their growth. If the water level is below this first water level, the light intensity at the bottom is too strong, allowing filamentous green algae to grow normally without being inhibited. If the water level is above this first water level, the light intensity at the bottom is limited, falling below the respiration compensation point of filamentous green algae, thereby inhibiting their growth.

[0037] S104, based on the extinction coefficient, the light intensity on the water surface, and the second preset light survival threshold of submerged plants in the monitored water area, the second water level is determined.

[0038] The second preset light survival threshold is the minimum light requirement threshold for the growth of submerged plants, and the second water level is the highest water level that satisfies the growth of submerged plants.

[0039] Specifically, while submerged plants are more shade-tolerant than filamentous green algae, they still have survival limits. The second water level refers to the maximum critical water depth at which, under the current surface light intensity and water quality, the light intensity required to ensure that the submerged plants do not fall below the second preset light survival threshold. If the water level is higher than this second water level, underwater light attenuation is excessive, resulting in insufficient photosynthesis and inhibited growth of the submerged plants. If the water level is lower than this second water level, normal photosynthesis and stable growth of the submerged plants can be guaranteed.

[0040] The second preset light survival threshold is a minimum critical value for growth light based on the photosynthetic physiological characteristics of submerged plants in the tested water area. It represents the minimum underwater light requirement for submerged plants to maintain normal photosynthesis, growth, and reproduction. It should be noted that at this second preset light survival threshold, submerged plants not only maintain respiration but also have the capacity for growth, germination, and resistance to environmental stress, resulting in a net photosynthetic rate greater than zero. When the light intensity for submerged plants falls below this second preset light survival threshold, problems such as slow growth, plant death, and community degradation will occur. For example, the second preset light survival threshold can be obtained through experiments or literature reviews.

[0041] S105, Based on the first coverage and the second coverage, determine the change in coverage of filamentous green algae.

[0042] Specifically, the change in coverage is used to quantify the dynamic changes in the coverage of filamentous green algae in the monitored waters within a preset time period.

[0043] For example, the difference between the first coverage and the second coverage is used to obtain the change in coverage.

[0044] S106 When the change in coverage exceeds the preset change in coverage, the target water level of the monitored water area is determined based on the first water level and the second water level in order to inhibit the growth of filamentous green algae.

[0045] Specifically, the preset coverage change is a critical threshold pre-set based on the ecological characteristics, carrying capacity, and climate of the monitored water area, used to determine whether there is a risk of filamentous green algae outbreaks. When the coverage change exceeds the preset coverage change, a high risk of rapid filamentous green algae outbreaks is determined in the monitored water area. For example, the preset coverage change is determined based on the current season. For instance, summer is the peak season for filamentous green algae, so the preset coverage change is set to 10%; spring and autumn are periods of slower filamentous green algae growth, so the preset coverage change is set to 5%.

[0046] The target water level refers to the optimal water depth at which the growth environment of filamentous green algae can be altered to suppress its outbreak. Once the target water level is determined, the monitored water area can be regulated based on it; that is, the water level in the monitored area is set as the target water level to inhibit the growth of filamentous green algae. In this way, by regulating the water level, the light intensity at the bottom of the water body is altered, the release of nitrogen and phosphorus nutrients from the sediment is suppressed, the suitable environmental conditions for the growth of filamentous green algae are disrupted, and the stable growth of submerged plants is protected.

[0047] In one possible implementation, based on a preset coverage change amount, multiple coverage change ranges are set, and each range corresponds to a preset water level. Then, the preset water level corresponding to the range where the coverage change amount is located is determined as the target water level.

[0048] In another possible implementation, the target water level is determined by comparing the change in coverage with a preset change in coverage. It should be noted that the specific implementation method for determining the target water level based on the comparison result of the change in coverage and the preset change in coverage will be described in subsequent embodiments and will not be elaborated here.

[0049] This invention first calculates the extinction coefficient based on the surface light intensity, the average light intensity at the bottom, and the water depth. Then, based on the extinction coefficient, and constrained by the light threshold for the photosynthetic respiration compensation point of filamentous green algae and the minimum growth light threshold for submerged plants, it obtains the minimum water level (the first water level) to inhibit filamentous green algae growth and the maximum water level (the second water level) to protect submerged plants. The optimal target water level is then matched with the change in filamentous green algae coverage. This achieves early identification of the risk of filamentous green algae outbreaks and precise water level control. Compared to the shortcomings of related technologies, such as manual cleaning, post-outbreak algae removal remediation, delayed control, and the risk of secondary pollution, this invention changes the light environment for algae growth through water level control, fundamentally inhibiting rapid algae growth from an ecological mechanism perspective. This effectively suppresses algae outbreaks, protects the growth of submerged plants, significantly improves the success rate of ecological restoration projects, and reduces operation and maintenance costs.

[0050] In some embodiments, based on the foregoing embodiments, in S102 above, the extinction coefficient is determined using a preset light attenuation model based on the water surface light intensity, the average light intensity of the bottom layer, and the water depth.

[0051] Specifically, the light attenuation model characterizes the relationship between the average light intensity at the bottom layer and the light intensity at the water surface. For example, the light attenuation model is expressed as follows:

[0052] in, The average light intensity at the bottom layer. Let be the light intensity on the water surface, k be the extinction coefficient, and H be the water level in the water area.

[0053] Therefore, the extinction coefficient is expressed as follows:

[0054] In some embodiments, based on any of the foregoing embodiments, in S103 above, in order to suppress the growth of filamentous green algae, the average light intensity of the bottom layer must be less than or equal to a first preset light survival threshold, that is, the following must be satisfied:

[0055] in, The average light intensity at the bottom layer. The first preset light survival threshold is set.

[0056] and Then the water level in the corresponding water area must meet the following requirements:

[0057] in, This is the first water level.

[0058] In this invention, considering that light is the core environmental factor for the germination, growth and expansion of filamentous green algae, the first water level in the monitored water area is determined based on the light intensity on the water surface and the first preset light survival threshold, so as to provide an ecological constraint boundary for the subsequent determination of the target water level.

[0059] In some embodiments, based on any of the foregoing embodiments, in S104 above, to prevent submerged plants from dying due to insufficient light, the following must be met:

[0060] in, The average light intensity at the bottom layer. This is the second preset light survival threshold.

[0061] The water level in the corresponding water area should meet the following requirements:

[0062] Where H represents the water level in the water area. The second water level, Let be the light intensity on the water surface, and k be the extinction coefficient.

[0063] This invention quantifies the upper limit of water level based on the physiological light requirements of submerged plants, determines the second water level based on the light intensity of the water surface and the second preset light survival threshold, and combines it with the first water level. By regulating the water level, the growth of filamentous green algae is weakened while ensuring the photosynthesis and normal growth of submerged plants, maintaining the aquatic ecological community structure of the monitored water area, and improving the accuracy and scientific nature of water level regulation.

[0064] In some embodiments, based on any of the foregoing embodiments, when the change in coverage exceeds a preset change in coverage, a target water level for the monitored water area is determined based on a first water level and a second water level, specifically including the following: First, compare the second water level with the first water level to obtain the comparison result.

[0065] Specifically, when the change in coverage exceeds the preset change in coverage, it indicates that the current water level and lighting environment can no longer constrain the expansion of filamentous green algae, and the current water level needs to be adjusted.

[0066] Then, based on the comparison results, the target water level is determined.

[0067] In one possible implementation, when the comparison result indicates that the first water level is less than or equal to the second water level, the second water level is determined as the target water level.

[0068] When the first water level is less than or equal to the second water level, it indicates that there is a sufficient ecological regulation range in the current monitored water area. Water level regulation can simultaneously meet the dual requirements of inhibiting the growth of filamentous green algae and protecting submerged plants. At this time, setting the second water level as the target water level can ensure that the light intensity at the bottom of the water body is much lower than the survival threshold of filamentous green algae, thereby maximizing the suppression of filamentous green algae growth. At the same time, the light intensity at the bottom of the water body just meets the growth needs of submerged plants, achieving the maximum algae suppression effect without damaging the submerged plant community.

[0069] In another possible implementation, when the comparison result indicates that the first water level is less than or equal to the second water level, the second water level is determined as the target water level; or, When the comparison result indicates that the first water level is greater than the second water level, the coordinated control mode is activated: within the preset submerged plant tolerance time window, the first water level is determined as the target water level, and the algae inhibitor dosing instruction is activated. The algae inhibitor dosing instruction is used to instruct the addition of a submerged plant-friendly algae inhibitor to the monitored water area; after the change in coverage is less than the preset change in coverage, the target water level is adjusted back to a depth less than or equal to the second water level.

[0070] When the first water level is higher than the second water level, it indicates that there is no water level in the current water body that can simultaneously satisfy both algae suppression and protection of submerged plants; these two objectives conflict. If a lower water level is adopted to accommodate submerged plants, it will lead to sufficient light at the bottom, resulting in a continuous outbreak of filamentous green algae. High-density filamentous green algae will completely suppress submerged plants through methods such as shading, entanglement, and competition for nutrients, causing large-scale death of submerged plants. In this case, the first water level is set as the target water level, prioritizing the suppression of large-scale filamentous green algae outbreaks. This avoids algae covering the water body, entanglement of submerged plants, and complete destruction of the restoration community. This approach sacrifices short-term, slight suppression of vegetation light to prevent overall degradation of the aquatic ecosystem.

[0071] In this embodiment of the invention, a first water level can be determined as the target water level within a preset submerged plant tolerance time window (e.g., 5-7 days in the future), at which time the submerged plants are temporarily suppressed but can tolerate it. A submerged plant-friendly algaecide is added simultaneously or in advance; the dosage is based on the principle of inhibiting filamentous green algae without harming the submerged plants. Furthermore, the water level control mode in the currently monitored water area is determined to be a collaborative control mode. Simultaneously, the change in coverage is acquired in real time. When the change in coverage is less than or equal to a preset change in coverage, the water level in the monitored water area is adjusted to below the second water level to promote the recovery of submerged plants. The control mode is exited when the duration of the change in coverage being less than or equal to the preset change in coverage is a preset duration (e.g., 7 days).

[0072] In this invention, by combining the first water level and the second water level, it is possible to suppress the proliferation and outbreak of filamentous green algae while ensuring the stable growth of submerged plants, maintaining the community structure in the ecological restoration of aquatic areas, and achieving a synergistic unity between algal ecological suppression and submerged biological maintenance.

[0073] In other embodiments, based on any of the foregoing embodiments, the method provided by the embodiments of the present invention further includes the following: First, when the change in coverage is less than or equal to the preset change in coverage, the preset light intensity range for photosynthesis of filamentous green algae is obtained.

[0074] Specifically, when the change in coverage is less than or equal to the preset change in coverage, it indicates that the filamentous green algae are currently in a slow growth state and there is no risk of an outbreak.

[0075] The preset light intensity range is a growth light interval determined based on the photosynthetic physiological characteristics of filamentous green algae. Within this range, filamentous green algae have a high photosynthetic rate and rapid proliferation potential, making it a suitable light intensity range for explosive growth. For example, the preset light intensity range is represented as [I a1 I a2 ], where I a1 I represents the lower limit of low light tolerance for filamentous green algae. a2 This represents the upper limit of suitable strong light for filamentous green algae.

[0076] It is understandable that the first preset light survival threshold for filamentous green algae is the respiration compensation point for filamentous green algae, serving as the minimum light standard for them. Below this threshold, filamentous green algae cannot survive. The preset light intensity range is the light interval for efficient photosynthesis of filamentous green algae.

[0077] Then, the target water level is determined based on the average light intensity of the underlying layer and the preset light intensity range.

[0078] In one possible implementation, when the average light intensity of the bottom layer is within a preset light intensity range, the smaller of the first water level and the second water level is determined as the target water level.

[0079] When the average light intensity at the bottom is within the preset light intensity range, it indicates that the current underwater light environment is suitable for the growth of filamentous green algae. Although there is no immediate risk of an outbreak, the filamentous green algae will continue to accumulate, posing a potential threat of a later outbreak, requiring slight water level intervention. At this point, the smaller of the first and second water levels is used as the target water level, meaning that the light environment for algae growth is slightly suppressed without harming submerged plants. Simultaneously, the water level control mode in the currently monitored area is set to early warning mode.

[0080] In this embodiment of the invention, after determining the smaller of the first water level and the second water level as the target water level, the target water level is controlled and monitored for a preset period of time (e.g., 1-2 weeks) and the change in the coverage of filamentous green algae is obtained again to adjust the target water level again.

[0081] In another possible implementation, when the average light intensity of the bottom layer is not within the preset light intensity range, the current water level of the monitored water area is determined as the target water level.

[0082] When the average light intensity at the bottom layer is not within the preset light intensity range, it indicates that the current light environment is no longer suitable for the efficient photosynthetic growth of filamentous green algae. The growth and proliferation of filamentous green algae are limited, with no risk of continuous accumulation or outbreak. Therefore, no water level adjustment is necessary. In this case, the current water level should be maintained to preserve the original aquatic ecosystem and avoid ineffective or excessive water level regulation. Simultaneously, the current water level control mode in the monitored area should be defined as the monitoring mode, i.e., maintaining the current water level without active intervention, only monitoring.

[0083] This invention also provides a system for inhibiting filamentous green algae based on water level regulation in aquatic environments. For example... Figure 2 As shown, the system includes an environmental sensing unit, a spatial monitoring unit, a core computing unit, a control and decision-making unit, and a water level regulation and execution unit.

[0084] The environmental sensing unit is used to collect aquatic environmental data in real time. The environmental sensing unit includes a surface light intensity monitoring module, a bottom light intensity monitoring module, and a water depth monitoring module.

[0085] The surface light intensity monitoring module is placed on the water surface to acquire the light intensity at the water surface. The bottom light intensity monitoring module is placed at the bottom of the water body to acquire the average light intensity at the bottom of the water body. The water depth monitoring module is placed in the water body to acquire the real-time average water depth at that location, which is used as the water level of the monitored area.

[0086] Spatial monitoring units are used to acquire the coverage of filamentous green algae in water bodies. For example, multispectral imagery from unmanned aerial vehicles (UAVs) or underwater video recognition and analysis methods can be used to quantitatively calculate the coverage of filamentous green algae through image inversion algorithms.

[0087] The core computing units include an extinction coefficient calculation module, a dual-constraint target water level calculation module, and a coverage growth rate calculation module.

[0088] The extinction coefficient calculation module is used to calculate the extinction coefficient based on the light attenuation model. The dual-constraint target water level calculation module is used to calculate the first and second water levels. The coverage growth rate calculation module is used to calculate the change in coverage.

[0089] The control decision unit is used to determine the target water level based on the above parameters.

[0090] It should be noted that the specific implementation methods for determining the first water level, the second water level, the change in coverage, and the target water level can be referred to the specific description of the embodiments in the above-mentioned method for inhibiting filamentous green algae based on water level regulation, and will not be repeated here.

[0091] The water level control execution unit is used to adjust the water level of the monitored water area based on the target water level.

[0092] This invention is primarily applicable to ecological restoration enclosures of shallow lakes, reservoirs, urban artificial lakes, or large lakes that have water level control infrastructure (such as sluice gates and pumping stations). For example, the water body should have good enclosure or belong to a plain polder water system that has undergone artificial intervention.

[0093] The water level control execution unit receives the target water level command and performs the following operations automatically or semi-automatically based on the on-site facility conditions: For water bodies with gate control (such as reservoirs and lakes with sluice gates), it automatically adjusts the opening of the spillway gate or intake gate to achieve the target water level by controlling the outflow or replenishment volume. For water bodies with pumping stations, it automatically starts and stops the replenishment pumps or drainage pumps, and, if necessary, coordinates with gate operation to quickly adjust the water level. For water bodies without artificial facilities, the system issues early warning information and suggested water level values, prompting management personnel to take temporary measures (such as using mobile pumps for water extraction).

[0094] This embodiment also provides a device for inhibiting filamentous green algae based on water level regulation. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0095] This embodiment provides a device for inhibiting filamentous green algae based on water level regulation in aquatic environments, such as... Figure 3 As shown, it includes: The acquisition module 301 is used to acquire the surface light intensity, bottom average light intensity and water depth of the monitored water area at the current time, monitor the first coverage of filamentous green algae in the water area, and the second coverage of filamentous green algae at a historical time after a preset time period based on the current time. The first determining module 302 is used to determine the extinction coefficient based on the surface light intensity, the average light intensity of the bottom layer, and the water depth. The second determining module 303 is used to determine the first water level based on the extinction coefficient, the light intensity of the water surface and the first preset light survival threshold of filamentous green algae, wherein the first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of filamentous green algae, and the first water level is the lowest water level that inhibits the growth of filamentous green algae. The third determining module 304 is used to determine the second water level based on the extinction coefficient, the light intensity on the water surface and the second preset light survival threshold of submerged plants in the monitored water area. The second preset light survival threshold is the minimum light requirement threshold for the growth of submerged plants, and the second water level is the highest water level that meets the growth requirements of submerged plants. The fourth determining module 305 is used to determine the change in the coverage of filamentous green algae based on the first coverage and the second coverage. The fifth determining module 306 is used to determine the target water level of the monitored water area based on the first water level and the second water level when the change in coverage is greater than the preset change in coverage, so as to inhibit the growth of filamentous green algae.

[0096] In one possible implementation, the second determining module 303 is specifically used to determine the extinction coefficient based on the water surface light intensity, the average light intensity of the bottom layer, and the water depth, using a preset light attenuation model.

[0097] In one possible implementation, when the change in coverage is greater than a preset change in coverage, the fifth determining module 306 is specifically used to compare the second water level and the first water level to obtain a comparison result. Based on the comparison results, the target water level is determined.

[0098] In one possible implementation, the fifth determining module 306 is specifically used to determine the second water level as the target water level when the comparison result indicates that the first water level is less than or equal to the second water level; or, When the comparison result indicates that the first water level is greater than the second water level, the coordinated control mode is activated: within the preset submerged plant tolerance time window, the first water level is determined as the target water level, and the algae inhibitor dosing instruction is activated. The algae inhibitor dosing instruction is used to instruct the addition of a submerged plant-friendly algae inhibitor to the monitored water area; after the change in coverage is less than the preset change in coverage, the target water level is adjusted back to a depth less than or equal to the second water level.

[0099] In one possible implementation, the fifth determining module is also used to obtain a preset light intensity range for photosynthesis of filamentous green algae when the change in coverage is less than or equal to a preset change in coverage. The target water level is determined based on the average light intensity of the bottom layer and the preset light intensity range.

[0100] In one possible implementation, the fifth determining module 306 is specifically used to determine the smaller of the first water level and the second water level as the target water level when the average light intensity of the bottom layer is within a preset light intensity range. or, When the average light intensity at the bottom layer is not within the preset light intensity range, the current water level of the monitored water area will be determined as the target water level.

[0101] The filamentous green algae suppression device based on water level regulation provided in this invention can execute the filamentous green algae suppression method based on water level regulation provided in any embodiment of this invention, and has the corresponding functional modules and beneficial effects for executing the method. Further functional descriptions of the above modules and units are the same as in the corresponding embodiments described above, and will not be repeated here.

[0102] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0103] The following is a detailed reference. Figure 4 This diagram illustrates a structural schematic suitable for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 401, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 402 or a program loaded from memory 408 into random access memory (RAM) 403. The RAM 403 also stores various programs and data required for the operation of the electronic device. The processor 401, ROM 402, and RAM 403 are interconnected via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0104] Typically, the following devices can be connected to I / O interface 405: input devices 406 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 407 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 408 including, for example, magnetic tapes, hard disks, etc.; and communication devices 409. Communication device 409 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 4 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0105] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 409, or installed from a memory 408, or installed from a ROM 402. When the computer program is executed by the processor 401, it performs the functions defined in the water level-based filamentous green algae suppression method of the embodiments of the present invention.

[0106] Figure 4 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present invention.

[0107] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the method for inhibiting filamentous green algae based on water level control shown in the above embodiments is implemented.

[0108] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0109] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for inhibiting filamentous green algae based on water level regulation in aquatic environments, characterized in that, The method includes: The system acquires the surface light intensity, average bottom light intensity, and water depth of the monitored water area at the current moment, the first coverage of filamentous green algae in the monitored water area, and the second coverage of filamentous green algae at a historical moment after a preset time period based on the current moment. The extinction coefficient is determined based on the surface light intensity, the average light intensity at the bottom layer, and the water depth. Based on the extinction coefficient, the light intensity of the water surface, and the first preset light survival threshold of the filamentous green algae, a first water level is determined, wherein the first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of the filamentous green algae, and the first water level is the lowest water level that inhibits the growth of the filamentous green algae. Based on the extinction coefficient, the light intensity on the water surface, and the second preset light survival threshold of the submerged plants in the monitored water area, a second water level is determined, wherein the second preset light survival threshold is the minimum light requirement threshold for the growth of the submerged plants, and the second water level is the highest water level that satisfies the growth of the submerged plants. Based on the first coverage and the second coverage, the change in coverage of the filamentous green algae is determined; When the change in coverage exceeds a preset change in coverage, a target water level is determined based on the first water level and the second water level to inhibit the growth of the filamentous green algae.

2. The method according to claim 1, characterized in that, The determination of the extinction coefficient based on the surface light intensity, the average light intensity at the bottom layer, and the water depth includes: Based on the surface light intensity, the average light intensity at the bottom layer, and the water depth, the extinction coefficient is determined using a preset light attenuation model.

3. The method according to claim 1, characterized in that, When the change in coverage exceeds a preset change in coverage, determining the target water level of the monitored water area based on the first water level and the second water level includes: Compare the second water level with the first water level to obtain the comparison result; Based on the comparison results, the target water level is determined.

4. The method according to claim 3, characterized in that, Determining the target water level based on the comparison results includes: When the comparison result indicates that the first water level is less than or equal to the second water level, the second water level is determined as the target water level; or, When the comparison result indicates that the first water level is greater than the second water level, the collaborative control mode is activated: within the preset submerged plant tolerance time window, the first water level is determined as the target water level, and an algaecide dosing command is activated, wherein the algaecide dosing command is used to instruct the addition of a submerged plant-friendly algaecide to the monitored water area; after the change in coverage is less than the preset change in coverage, the target water level is adjusted back to a depth less than or equal to the second water level.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: When the change in coverage is less than or equal to the preset change in coverage, the preset light intensity range for photosynthesis of the filamentous green algae is obtained; The target water level is determined based on the average light intensity of the underlying layer and the preset light intensity range.

6. The method according to claim 5, characterized in that, Determining the target water level based on the average light intensity of the underlying layer and the preset light intensity range includes: When the average light intensity of the bottom layer is within the preset light intensity range, the smaller of the first water level and the second water level is determined as the target water level; or, When the average light intensity of the bottom layer is not within the preset light intensity range, the current water level of the monitored water area is determined as the target water level.

7. A device for inhibiting filamentous green algae based on water level regulation, characterized in that, The device includes: The acquisition module is used to acquire the surface light intensity, bottom average light intensity and water depth of the monitored water area at the current moment, the first coverage of filamentous green algae in the monitored water area, and the second coverage of filamentous green algae at a historical moment after a preset time period based on the current moment. The first determining module is used to determine the extinction coefficient based on the water surface light intensity, the average light intensity of the bottom layer, and the water depth; The second determining module is used to determine the first water level based on the extinction coefficient, the light intensity of the water surface, and the first preset light survival threshold of the filamentous green algae, wherein the first preset light survival threshold is the light threshold of the photosynthetic respiration compensation point of the filamentous green algae, and the first water level is the lowest water level that inhibits the growth of the filamentous green algae. The third determining module is used to determine the second water level based on the extinction coefficient, the light intensity on the water surface, and the second preset light survival threshold of the submerged plants in the monitored water area, wherein the second preset light survival threshold is the minimum light requirement threshold for the growth of the submerged plants, and the second water level is the highest water level that satisfies the growth of the submerged plants. The fourth determining module is used to determine the change in coverage of the filamentous green algae based on the first coverage and the second coverage. The fifth determining module is used to determine the target water level of the monitored water area based on the first water level and the second water level when the change in coverage is greater than the preset change in coverage, so as to inhibit the growth of the filamentous green algae.

8. An electronic device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the method for inhibiting filamentous green algae based on water level control as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to execute the method for inhibiting filamentous green algae based on water level regulation as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, Includes computer instructions for causing a computer to execute the method for inhibiting filamentous green algae based on water level regulation as described in any one of claims 1 to 6.

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