A device for preventing and controlling herbivorous birds in a river and lake water ecological restoration area

Abstract

This utility model relates to a bird control device for herbivorous birds in river and lake ecological restoration areas, comprising a boundary bird-proof cover net and a bird-proof vertical net. The boundary bird-proof cover net is continuously laid along the boundary of the ecological restoration area, with a width of 10-50m. The net surface curves upward from one end near the boundary of the ecological restoration area towards the center of the ecological restoration area, forming an angle of 30±5° with the water surface. The net surface has a diamond-shaped mesh of 3cm-10cm and a light transmittance of ≥85%. The lowest point of the boundary bird-proof cover net is 10-20cm above the water surface. The bird-proof vertical net is set within the area enclosed by the boundary bird-proof cover net, and includes several net bodies with their surfaces perpendicular to the water surface. The upper end of the net body is 0.5-1.5m above the water surface, and the lower end of the net body is 0-30cm above the water surface. The total length of the bird-proof vertical net extending parallel to the water surface is 150-300m / hm. 2 This invention effectively controls the grazing of herbivorous birds while maintaining the water's light transmittance and ecological connectivity. It does not actively harm birds, is more in line with environmental protection and animal welfare principles, does not affect the growth of aquatic plants in shallow water areas, and meets the needs of long-term management.

Description

Technical Field

[0001] This utility model relates to the field of river and lake water ecological restoration technology, specifically to a control device for herbivorous birds in river and lake water ecological restoration areas. Background Technology

[0002] River and lake aquatic ecological restoration projects are important means to improve the aquatic environment and restore biodiversity. Core measures include planting aquatic vegetation and constructing benthic communities. For example, planting emergent plants such as reeds and cattails can effectively absorb nitrogen and phosphorus pollutants and build a stable ecosystem. However, during the restoration process, herbivorous birds (such as coots, wild ducks, egrets, herons, and night herons) often feed on the tender shoots and roots of aquatic plants, leading to a decrease in vegetation cover and even causing the ecological functions of the restored area to fail.

[0003] Existing bird control technologies include setting up bird deterrents, using sound and light bird deterrents, and employing manual deterrence or chemical repellents. However, traditional bird deterrents can easily cause secondary ecological problems such as reduced water light transmittance and decreased dissolved oxygen. Sound and light bird deterrents can easily lead to bird adaptation and may disturb nearby residents, requiring power supply or regular replacement and maintenance, which is not suitable for the long-term management needs of ecological restoration areas. Manual deterrence or chemical repellents may injure non-target birds or disrupt the regional food chain, failing to meet environmental protection and animal welfare requirements and thus not suitable for long-term use. Furthermore, existing control technologies have low precision and cannot target the specific foraging behavior of the Common Moorhen (grazing on submerged plants in shallow water areas). Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the existing technology, this utility model provides a control device for herbivorous birds in river and lake ecological restoration areas. It can accurately block herbivorous birds from entering the core ecological area and reduce their foraging adaptability through multi-dimensional spatial barriers by utilizing the principles of avian behavior. While controlling the grazing of herbivorous birds, it can also maintain the light transmittance and ecological connectivity of the water body, without actively harming the birds. It is more in line with the requirements of environmental protection and animal protection, does not affect the growth of vegetation in shallow water areas, and solves the problem that existing control measures cannot be applied in the long term.

[0006] (II) Technical Solution

[0007] A device for controlling herbivorous birds in a river and lake ecological restoration area, comprising: a boundary bird-proof cover net (1) and a bird-proof upright net (2);

[0008] The boundary bird-proof netting (1) is continuously laid along the boundary of the ecological restoration area, with a width of 10-50m. The netting surface of the boundary bird-proof netting (1) curves upward from the end closest to the boundary of the ecological restoration area toward the center of the ecological restoration area, forming an elevation angle of 30±5° with the water surface. The netting surface has a diamond mesh of 3cm-10cm and a light transmittance of ≥85%. The lowest point of the boundary bird-proof netting (1) is 10-20cm above the water surface.

[0009] The bird-proof netting (2) is installed within the area enclosed by the boundary bird-proof cover netting (1); the bird-proof netting (2) includes several net bodies with their surfaces perpendicular to the water surface, and the upper end of the net body is 0.5m-1.5m above the water surface, and the lower end of the net body is 0-30cm above the water surface; the total length of the net body of the bird-proof netting (2) extending parallel to the water surface is 150-300m / hm. 2 water surface.

[0010] According to one embodiment of this utility model, the boundary bird-proof cover net (1) is composed of multiple cover net modules spliced ​​together. Adjacent cover net modules are connected by waterproof buckles (5) to prevent large gaps from forming between adjacent cover net modules, which could lead to birds accidentally entering. The modular splicing and assembly structure of the boundary bird-proof cover net 1 can greatly reduce the assembly difficulty and reduce the construction cost per acre of water area.

[0011] According to one embodiment of the present invention, it further includes a fixing pile (6), the fixing pile (6) including a first fixing pile (61) and a second fixing pile (62), the first fixing pile (61) is arranged at intervals along the boundary of the ecological restoration area, the second fixing pile (62) is away from the boundary of the ecological restoration area and is arranged opposite to the first fixing pile (61); the boundary bird-proof net (1) is fixed above the water surface by means of the fixing pile (6).

[0012] According to one embodiment of the present invention, the cover mesh module includes a mesh surface and a frame for supporting the mesh surface, and the frame of each cover mesh module is fixed on a fixing post (6). Preferably, the frame is made of 30×30mm hollow aluminum alloy profile or other lightweight hard materials, such as bamboo or a wood pole treated with corrosion resistance.

[0013] According to one embodiment of the present invention, the cover net module includes a net surface and a frame for supporting the net surface; the control device also includes a float adjustment assembly (3), which includes a plurality of small floats (31) and a large float (32), the volume of the large float (32) being larger than that of the small floats (31);

[0014] In this configuration, one end of the small buoy (31) is connected to the first fixed stake (61) by a soft rope, and one end of the large buoy (32) is connected to the second fixed stake (62) by a soft rope. The frame of the cover net module is fixed to the top of the small buoy (31) and the large buoy (32); or,

[0015] The small buoy (31) and the large buoy (32) are structures with perforations in the middle. The small buoy is fitted over the first fixed pile (61), and the large buoy (32) is fitted over the second fixed pile (62). The frame of the cover net module is fixed to the top of the small buoy (31) and the large buoy (32).

[0016] According to one embodiment of the present invention, the top surface of the boundary bird-proof cover (1) is provided with a reflective strip (7); preferably, the width of the reflective strip (7) is 5cm and the nighttime reflective intensity is >500cd / lx.

[0017] According to one embodiment of the present invention, the extension direction of the bird-proof net (2) parallel to the water surface is not limited, but is preferably one or a combination of two or more of the following directions: north-south, east-west, northeast, and southeast; the extension length of a single net parallel to the water surface is 50-150m, and a net stake (8) is set every 20-50m.

[0018] According to one embodiment of the present invention, the bird-proof net (2) is composed of multiple net units spliced ​​together, and each net unit is slidably connected to the net post (8) through its frame. A floating part is connected to the lower end of the net unit, and the floating part is used to support it on the water surface, so that the bird-proof net (2) rises and falls with the rise and fall of the water surface. Its lower end is always 0-30cm away from the water surface, so as to avoid the lower end of the net body from being submerged in the water and hindering the free movement of fish underwater.

[0019] According to one embodiment of the present invention, the net body of the bird-proof net (2) is a tire wire mesh (10) with a mesh size of 5-10cm, or a curtain or a grid formed by horizontally parallel or vertically parallel intervals of nylon fishing lines with a diameter of 0.4mm or more, and the parallel line spacing of the nylon fishing lines is ≤50cm.

[0020] According to one embodiment of this utility model, a monitoring device is installed at the top of the fixed pile (6) to monitor the degree of deformation of the cover net or the damage to the facility in real time. This facilitates timely repair or replacement of the cover net module.

[0021] (III) Beneficial Effects

[0022] This utility model provides a control device for herbivorous birds in river and lake ecological restoration areas. Through a composite structure design of "boundary netting + internal vertical netting", it can achieve at least the following technical effects:

[0023] (1) The boundary bird-proof netting is made of polyethylene monofilament woven with a light transmittance of ≥85%, which not only blocks birds but also ensures the normal growth of submerged plants; the bird-proof netting is set up in an alternating pattern, which not only forms a flight interference zone but also prevents it from affecting the normal growth of small and medium-sized aquatic plants and animals. Therefore, the control device can block migratory herbivorous birds from entering the core ecological area, while maintaining the light transmittance and ecological connectivity of the water body, and avoiding secondary ecological problems such as reduced dissolved oxygen.

[0024] (2) The control device of this utility model utilizes the principles of avian behavior to reduce the bird's foraging adaptability through multi-dimensional spatial barriers. When herbivorous migratory birds attempt to glide and land, the boundary bird-proof netting forms an elevation angle of 30±5° with the water surface, forcing the birds to change their flight trajectory (experiments show that 87% of individuals turn and flee). The elevation angle design of the boundary bird-proof netting breaks the water-skimming gliding and landing behavior of the Common Moorhen, and the irregular reflection of the bird-proof netting interferes with the bird's spatial positioning.

[0025] (3) The bird control device of this utility model uses a high light transmittance boundary bird cover net, and based on its elevation angle design and reflective principle, it can block herbivorous birds from grazing while not causing active harm to the birds, not disrupting the regional food chain, and is more in line with environmental protection and animal protection requirements, and can be used for a long time.

[0026] The bird control device of this invention does not use chemical agents or sound and light to scare away birds. It has low energy consumption, low maintenance cost, and can be recycled and reused, making it economical in the long run. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall control device according to a preferred embodiment.

[0028] Figure 2 A schematic diagram of the cover net module of the boundary bird-proof cover net of the bird-proof control device according to a preferred embodiment.

[0029] Figure 3 A schematic diagram of a bird-proof netting device according to a preferred embodiment. Figure 1 .

[0030] Figure 4 A schematic diagram of a bird-proof netting device according to a preferred embodiment. Figure 2 . Detailed Implementation

[0031] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] like Figure 1-2The diagram shows the overall design of the bird control device for herbivorous birds in the river and lake ecological restoration area of ​​this utility model. It includes a boundary bird-proof netting 1 and a bird-proof vertical netting 2. The boundary bird-proof netting 1 is continuously laid along the boundary of the ecological restoration area, and the bird-proof vertical netting 2 is set within the area enclosed by the boundary bird-proof netting 1.

[0034] The bird-proof netting 1 along the boundary curves upwards from the end closest to the boundary of the ecological restoration area toward the center of the ecological restoration area, forming an angle of 30±5° with the water surface (see...). Figure 2 The netting is 10-50m wide, with a diamond mesh size of 3cm-10cm, a light transmittance of ≥85%, and modified polyethylene filaments with a diameter of 0.5mm or more per filament. The lowest point of the boundary bird-proof netting 1 is 10-20cm above the water surface. This angled design forces herbivorous migratory birds to change their flight path when attempting to glide down. To avoid the netting, birds must glide upwards along it, preventing them from landing smoothly. The high light transmittance of the netting maintains water transparency and ecological connectivity while blocking birds, avoiding secondary ecological problems such as reduced dissolved oxygen. The 10-20cm height of the boundary bird-proof netting 1 from the water surface reduces growth pressure on aquatic plants in the shallow water area along the boundary of the ecological restoration zone, allowing them to reproduce normally. Preferably, the modified polyethylene filaments in the netting have a diameter of 0.5mm, a warp density of 8 threads / 10cm, and a weft density of 6 threads / 10cm. The modified polyethylene filament contains 2-3 wt% nano-TiO2, which has a strong anti-ultraviolet aging effect, giving the boundary bird protection net 1 a strong weather resistance.

[0035] like Figure 1 , Figure 3 , Figure 4 As shown, the bird-proof netting 2 comprises several net bodies with their surfaces perpendicular to the water surface. The upper end of the net body is 0.5m-1.5m above the water surface, and the lower end is 0-30cm above the water surface. The direction of the bird-proof netting 2's extension parallel to the water surface is not limited; it can be longitudinal, transverse, or crisscrossed. Preferably, it is one or more combinations of north-south, east-west, northeast, and southeast directions. The extension length of a single net body parallel to the water surface is 50-150m, and a net stake 8 is installed every 20-50m. The net stake 8 serves to secure the bird-proof netting 2. The net stake 8 can be made of galvanized steel pipe or bamboo, and its lower end is inserted into the underwater sediment of the ecological restoration area to a depth ≥0.5m. In the selected ecological restoration area, the total extension length of the bird-proof netting 2 parallel to the water surface is 150-300m / hm. 2 water surface.

[0036] See Figure 1As shown, the boundary bird-proof netting 1 is composed of multiple netting modules spliced ​​together. Adjacent netting modules are connected by waterproof clips 5 to prevent large gaps from forming between them, which could allow birds to enter. The modular splicing and assembly structure of the boundary bird-proof netting 1 greatly reduces assembly difficulty and construction costs per acre of water area. Furthermore, the sides of adjacent netting modules can be plugged in or snapped together (similar to the design of plugged or snapped edges on floor slabs), and then reinforced with waterproof clips 5. Each netting module includes a mesh surface and a frame for supporting the mesh surface. The frame can be made of 30×30mm hollow aluminum alloy profiles or other corrosion-resistant lightweight materials, such as anti-corrosion treated bamboo or wooden poles. The frame not only supports the mesh surface but also serves to install individual netting modules in predetermined positions. The size of a single netting module can be 2×5m or larger.

[0037] In order to securely install each of the bird-proof netting modules 1 above the water surface, such as Figure 1 As shown, this utility model also includes fixed piles 6, which include first fixed piles 61 and second fixed piles 62. The first fixed piles 61 are arranged at intervals along (close to) the boundary of the ecological restoration area, while the second fixed piles 62 are arranged away from the boundary of the ecological restoration area (closer to the center of the ecological restoration area) and opposite to the first fixed piles 61. Large buoys 32 are fitted onto each of the second fixed piles 62, and small buoys 31 are fitted onto each of the first fixed piles 61. The volume of the large buoys 32 is larger than that of the small buoys 31. The frame or top corner of the cover net module is fixed to the top of the small buoys 31 and the large buoys 32. As the water level rises and falls in the river and lake ecological restoration area, the small buoy 31 and the large buoy 32 can synchronously raise and lower each netting module, ensuring that the netting modules and the boundary bird-proof netting 1 are always fixed at a minimum height of 10-20cm above the water surface, forming an elevation angle of 30±5° with the water surface, on the surface of a certain width of water at the boundary of the ecological restoration area (the width of the boundary bird-proof netting 1 is 10-50m). The length of a single netting module is 20-50m. The fixing pile 6 can be made of galvanized steel pipe or bamboo, with its lower end inserted into the underwater soil to a depth ≥0.5m.

[0038] like Figure 2 As shown, the top surface of the boundary bird-proof cover net 1 is provided with reflective strips 7. The width of the reflective strips 7 is 5cm, and the nighttime reflective intensity is >500cd / lx. It is used to interfere with the birds' vision and cause the birds to feel unsafe, so as to reflect light as a warning and prevent them from landing.

[0039] like Figure 3-4 As shown, the bird-proof netting 2 is made of tire wire mesh with a mesh size of 5-10cm. Figure 4 ), or a curtain formed by horizontally or vertically parallel intervals of nylon fishing line with a diameter of 0.4mm or more (such as...). Figure 3The netting can be either crisscrossed or formed by intersecting lines, with the parallel lines of the nylon fishing line spaced ≤50cm. The straight tensile strength of the nylon fishing line is greater than 10.35kg to effectively improve resistance to bird strikes, wave impacts, etc., and enhance durability. The nylon fishing line is a colorless, highly transparent, and corrosion-resistant material that does not block light and will not affect the photosynthesis of aquatic plants. The materials and connectors of the boundary bird netting 1 and the bird netting stand are all made of materials that are not significantly toxic to the aquatic environment, have high strength and good durability, and can be recycled and reused, reducing costs.

[0040] The prevention and control device of this utility model can be constructed according to the following procedure:

[0041] Step 1: Drive the first fixed stake 61 along the boundary of the water area of ​​the ecological restoration zone, and drive the second fixed stake 62 near the center of the ecological restoration zone. The second fixed stake 62 is set corresponding to the first fixed stake 61 and spaced at a certain distance, which is approximately 0.866 times the width of the boundary bird-proof netting 1. The spacing between two adjacent first fixed stakes 61 is 20-50m, and the penetration depth of each stake is ≥0.5m. Install small buoys 31 around the first fixed stakes 61 and large buoys 32 around the second fixed stakes 62.

[0042] Step 2: Fix the frame or top corner of the cover net module to the small buoy 31 and the large buoy 32, and insert the frames of two adjacent cover net modules together. Reinforce the connection at the joint with waterproof buckles 5. After completing the assembly along the water boundary of the ecological restoration area, a boundary bird-proof cover net 1 is formed.

[0043] Step 3: Arrange an array of bird-proof netting 2 on the inner side of the boundary bird-proof cover netting 1, and use a tension meter to calibrate the tautness of the bird-proof netting 2 (deflection < 3 cm / m).

[0044] The maintenance method of this utility model's bird-proof netting device is as follows: Monitoring devices are installed at the top of some fixed stakes 6. IoT terminals are used to monitor the deformation (laser ranging accuracy ±1cm) or damage of the boundary bird-proof netting 1 in real time. It can also be used in conjunction with weekly drone inspections to identify damaged areas (identification accuracy >95%). When areas with severe deformation or significant damage are found, the corresponding netting modules are promptly repaired or replaced.

[0045] The main working principle of the bird control device of this utility model includes: (1) When herbivorous migratory birds attempt to glide and land, the approximately 30° elevation angle of the boundary bird-proof netting 1 forces the birds to change their flight trajectory. During gliding, in order to avoid the net surface, the birds must glide upwards along the net surface, making it impossible for them to land smoothly. (2) The horizontal and vertical crisscross arrangement of the bird-proof netting 2 will interfere with the birds' visual positioning. At the same time, the reflective strips 7 of the boundary bird-proof netting 1 stimulate the birds' vision, causing discomfort and fear, interfering with the birds' visual positioning, and causing the birds to stay away.

[0046] Example 2

[0047] The main difference between this embodiment and Embodiment 1 is that the small buoy 31 is not connected to the outside of the first fixed stake 61, and the large buoy 32 is not connected to the outside of the second fixed stake 62. Instead, one or more small buoys 31 connected in series are connected to the first fixed stake 61 with soft ropes, and one or more large buoys 32 connected in series are connected to the second fixed stake 62 with soft ropes. Then, the frame or top corner of the cover net module forming the boundary bird-proof cover net 1 is fixed to the small buoys 31 and the large buoys 32, and the frames of two adjacent cover net modules are interlocked, with the joints reinforced by waterproof buckles 5. In this embodiment, using soft ropes to connect one or more small buoys 31 connected in series to the first fixed stake 61 and one or more large buoys 32 connected in series to the second fixed stake 62 can roughly fix the position of the small buoys 31 and the large buoys 32, while also giving the cover net module and the entire boundary bird-proof cover net 1 the ability to buffer against wind and waves.

[0048] When a bird-proof cover module 1 is supported by multiple series-connected small buoys 31 and multiple series-connected large buoys 32, the two ends of the series-connected small buoys 31 are respectively connected between two adjacent first fixed piles 61, and the two ends of the series-connected large buoys 32 are respectively connected between two adjacent second fixed piles 62; at this time, the rear edge of the cover module is fixed to the top surface of the series-connected small buoys 31, and the front edge of the cover module is fixed to the top surface of the series-connected large buoys 32.

[0049] Example 3

[0050] The main difference between this embodiment and Embodiment 1 is that the float adjustment assembly 3 is not provided; instead, the edges of each cover module of the boundary bird-proof cover net 1 are directly fixed to adjacent fixing stakes 6, and the edges of two adjacent cover modules are interlocked, with the joints reinforced by waterproof clips 5. Alternatively, a rod with slots on both sides is connected between the corresponding first fixing stake 61 and second fixing stake 62, and the edges of each cover module of the boundary bird-proof cover net 1 are inserted into the slots for fixation, with the joints of two adjacent cover modules reinforced by waterproof clips 5.

[0051] Example 4

[0052] The main difference between this embodiment and embodiments 1-3 is that each individual net body of the bird-proof net 2 is composed of multiple net units spliced ​​together (the edges of the units have a design similar to the interlocking or snap-fit ​​edges of floor tiles), and each net unit is slidably connected to the net post 8 through its frame. A floating component is connected to the lower end of the net unit, which is supported on the water surface. This allows each net unit of the bird-proof net 2 to rise and fall with the water level, with its lower end always 0-30cm away from the water surface, preventing the lower end of the net body from being submerged in the water and hindering the free movement of fish underwater.

[0053] The prevention and control device of this utility model has the following advantages:

[0054] (1) Ecological compatibility: The boundary bird netting 1 is made of polyethylene monofilament woven net with a light transmittance of ≥85%, which can block birds while ensuring the normal growth of submerged plants; the internal bird netting 2 is set up in an interlaced manner, which not only forms a flight interference zone, but also does not affect the normal growth of small and medium-sized aquatic plants and animals; (2) Behavioral control effectiveness: The boundary bird netting 1 is designed with an elevation angle of nearly 30° to break the gliding landing behavior of the coot on the water surface, and at the same time, it is combined with the irregular reflection generated by the bird netting 2 to interfere with the spatial positioning of birds; (3) Long-term economic efficiency: The boundary bird netting 1 and the bird netting 2 are made of UV-resistant modified materials, and the outdoor service life is as long as 5-8 years; (4) The boundary bird netting 1 or the bird netting 2 can be assembled in a modular or unitized splicing structure. When the net surface is damaged or deformed, it can be partially replaced and restored to its original state. It is easy to construct, install and disassemble and recycle, reducing construction costs and simplifying maintenance.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions, or combinations of technical features in the above embodiments that do not conflict with each other, can be made in accordance with the manner described in the embodiments. These modifications, substitutions or combinations do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A control device for herbivorous birds in river and lake ecological restoration areas, characterized in that, It includes: a boundary bird-proof cover net (1) and a bird-proof upright net (2); The boundary bird-proof netting (1) is continuously laid along the boundary of the ecological restoration area, with a width of 10-50m. The netting surface of the boundary bird-proof netting (1) curves upward from the end closest to the boundary of the ecological restoration area toward the center of the ecological restoration area, forming an elevation angle of 30±5° with the water surface. The netting surface has a diamond mesh of 3cm-10cm and a light transmittance of ≥85%. The lowest point of the boundary bird-proof netting (1) is 10-20cm above the water surface. The bird-proof netting (2) is installed within the area enclosed by the boundary bird-proof cover netting (1); the bird-proof netting (2) includes several net bodies with their surfaces perpendicular to the water surface, and the upper end of the net body is 0.5m-1.5m above the water surface, and the lower end of the net body is 0-30cm above the water surface; the total length of the net body of the bird-proof netting (2) extending parallel to the water surface is 150-300m / hm. 2 water surface.

2. The control device according to claim 1, characterized in that, The boundary bird-proof cover (1) is composed of multiple cover modules spliced ​​together, and adjacent cover modules are connected by waterproof buckles (5).

3. The control device according to claim 2, characterized in that, It also includes fixed piles (6), which include a first fixed pile (61) and a second fixed pile (62). The first fixed pile (61) is laid out at intervals along the boundary of the ecological restoration area, and the second fixed pile (62) is located away from the boundary of the ecological restoration area and is set opposite to the first fixed pile (61). The boundary bird-proof net (1) is fixed above the water surface by means of the fixed piles (6).

4. The control device according to claim 3, characterized in that, The cover mesh module includes a mesh surface and a frame for supporting the mesh surface, and the frame of each cover mesh module is fixed on a fixed stake (6).

5. The control device according to claim 3, characterized in that, The cover mesh module includes a mesh surface and a frame for supporting the mesh surface; The control device also includes a float adjustment assembly (3), which includes several small floats (31) and large floats (32), with the volume of the large floats (32) being larger than that of the small floats (31); In this configuration, one end of the small buoy (31) is connected to the first fixed stake (61) by a soft rope, and one end of the large buoy (32) is connected to the second fixed stake (62) by a soft rope. The frame of the cover net module is fixed to the top of the small buoy (31) and the large buoy (32); or, The small buoy (31) and the large buoy (32) are structures with perforations in the middle. The small buoy is fitted over the first fixed pile (61), and the large buoy (32) is fitted over the second fixed pile (62). The frame of the cover net module is fixed to the top of the small buoy (31) and the large buoy (32).

6. The prevention and control device according to claim 1, characterized in that, The top surface of the boundary bird-proof cover (1) is provided with reflective strips (7).

7. The control device according to claim 1, characterized in that, The bird-proof net (2) extends parallel to the water surface in one or more of the following directions: north-south, east-west, northeast, and southeast. The extension length of a single net parallel to the water surface is 50-150m, and a net stake (8) is set every 20-50m.

8. The control device according to claim 7, characterized in that, Each bird-proof net (2) is composed of multiple net units spliced ​​together, and each net unit is slidably connected to the net stake (8) through its frame. A floating part is connected to the lower end of the net unit, and the floating part is used to support it on the water surface, so that the bird-proof net (2) rises and falls with the rise and fall of the water surface.

9. The prevention and control device according to claim 1, characterized in that, The bird-proof net (2) is a tire wire mesh (10) with a mesh size of 5-10cm, or a curtain or grid formed by horizontal or vertical parallel intervals of nylon fishing lines with a diameter of 0.4mm or more, and the parallel line spacing of the nylon fishing lines is ≤50cm.

10. The control device according to claim 1, characterized in that, A monitoring device is installed at the top of the fixed pile (6) to monitor the degree of deformation of the cover net or the damage to the facility in real time.

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