A desert edge photovoltaic eco-screen system

Abstract

This invention discloses a desert edge photovoltaic ecological barrier system in the field of desertification control. From the desert side to the oasis side, it comprises: a dune-blocking belt, located on the ridge line of the dune chain, with adjustable tilt angle and height; a grid-like blocking belt, using a woven mesh structure to three-dimensionally intercept and stabilize large-scale shifting sand; a low-lying vertical sand-fixing belt, also using a woven mesh structure to stabilize near-surface windblown sand and fix loose sand particles; a first sand-blocking forest belt; a photovoltaic zone; a second sand-blocking forest belt; and a restoration zone. The beneficial effects of this invention are: by systematically integrating multiple levels of structures such as sand source blocking, grid-like sand fixation, windbreak forest belts, extensive array sand control, and enclosure and restoration, a continuous ecological protection chain is constructed from the desert side to the oasis side, effectively improving the system's sand-fixing capacity, ensuring the operational stability and power generation efficiency of the photovoltaic power station, and improving the ecological environment of the desert edge.

Description

Technical Field

[0001] This invention relates to the field of desertification control, specifically to a photovoltaic ecological barrier system for desert edges. Background Technology

[0002] Western and northern arid and semi-arid regions of my country possess abundant solar energy resources, making them crucial areas for large-scale photovoltaic (PV) power generation. Deploying PV power plants in the desert-oasis transition zone offers significant locational advantages and ecological significance. Firstly, desert fringe areas have high accessibility, relatively flat terrain, and favorable infrastructure conditions, resulting in strong feasibility for engineering construction and operation, effectively reducing the construction and management costs of PV power plants. Secondly, this region is located at the forefront of desertification expansion, serving as a vital ecological defense against desert encroachment on oases. By constructing PV ecosystems on the desert fringe, not only can the shading effect of PV panels, surface cover, and vegetation restoration jointly suppress wind erosion, but a windbreak and sand-fixing barrier can also be formed, playing a positive role in curbing desertification and stabilizing the regional ecological pattern.

[0003] However, desert fringe areas still face severe natural environmental challenges, such as frequent strong winds, intense sandstorms, and highly erosive surfaces. The accumulation, wear, and burial of photovoltaic modules by wind and sand significantly reduces power generation efficiency, affecting equipment lifespan and operational safety. Existing sand control measures for photovoltaic power plants are mostly localized engineering efforts, lacking systematic spatial planning and ecological coordination mechanisms, and unable to simultaneously address the needs of windbreak and sand fixation with ecological restoration. How to construct a desert fringe photovoltaic ecological barrier system that integrates energy utilization, ecological protection, and sustainable governance, achieving integrated "sand prevention—sand control—sand fixation—greening," is a key technical problem that urgently needs to be solved.

[0004] Therefore, we propose a photovoltaic ecological barrier system for the edge of deserts. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a photovoltaic ecological barrier system for desert edges.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] A photovoltaic ecological barrier system on the edge of a desert, comprising, from the desert side to the oasis side:

[0008] Sand dune blocking belts are set on the ridges of sand dune chains. Their tilt angle and height are adjusted by adjusting their structure. Sand dune blocking belts are used for the initial blocking and deposition of wind and sand.

[0009] The grid-like barrier strip uses a woven mesh structure to three-dimensionally intercept and stabilize large-scale quicksand.

[0010] The low-lying vertical sand-fixing belt also stabilizes near-surface wind-blown sand and fixes loose sand particles through a woven mesh structure;

[0011] The first sand-blocking forest belt forms the first biological sand-blocking barrier through sand-loving shrubs;

[0012] Photovoltaic zones are used to generate clean electricity;

[0013] The second sand-blocking forest belt forms a second biological sand-blocking barrier through sand-loving shrubs;

[0014] In the restoration zone, a third biological barrier against sand is provided by planting desert-resistant tree species.

[0015] Sand dune-blocking belts initially block and deposit windblown sand. Sand not blocked by the dune-blocking belts enters the grid-like sand-fixing belts, where a woven mesh structure intercepts it. Low-lying vertical sand-fixing belts stabilize near-surface windblown sand not blocked by the grid-like sand-fixing belts. Further, sand-loving shrubs block any escaping sand. This reduces the coverage of the photovoltaic area by windblown sand and improves the stability of power generation. A second sand-blocking forest belt acts as a second biological barrier, further blocking any escaping sand and significantly reducing its entry into the area. The amount of wind and sand in the restoration area, and the planting of desert-tolerant tree species in the restoration area can serve as a research object for natural restoration, which is beneficial to the research of sandy land greening. Setting the sand dune blocking belt with adjustable angle and height allows the sand dune blocking belt to tilt towards the desert side. The tilt angle can be adjusted according to the wind and sand season, which can effectively weaken the wind and sand flow that is close to the ground and carries the largest amount of sand. It can make the airflow rise in front of the board, and the sand particles fall after hitting the board surface due to inertia, forming an effective vortex deceleration zone behind the board, promoting sand particle deposition and improving the blocking effect.

[0016] Further defined, the dune sand-blocking belt includes a sand-blocking base, hinged lugs, sand-blocking plates, and sand-blocking sleeves; the sand-blocking base is anchored in the soil along the sand ridge line by anchor bolts, the hinged lugs are vertically arranged on both sides of the sand-blocking base, the bottom sides of the sand-blocking plates are hinged to the hinged lugs, the sand-blocking sleeves are slidably fitted on the top of the sand-blocking plates, and the height of the sand-blocking sleeves is adjusted by an adjustment structure. The dune sand-blocking belt is arranged in two rows along the direction from the desert side to the oasis side, and each row of dune sand-blocking belt includes several sand-blocking plates arranged at intervals, with the two rows of sand-blocking plates staggered.

[0017] A sand-blocking sleeve is installed, and the height of the sand-blocking belt can be adjusted by adjusting the structure to move the sand-blocking sleeve up and down on the sand-blocking plate. This also prevents wind and sand from entering the sand-blocking sleeve by placing the sand-blocking sleeve above the sand-blocking plate. The two rows of sand-blocking plates can greatly reduce the width and weight of the sand-blocking plates, greatly reducing the pressure on the adjustment structure. The staggered arrangement of the two rows of sand-blocking plates can also block and intercept the gaps in the first row of sand-blocking plates.

[0018] Further specifying, the adjustment structure is provided in two sets, respectively located on both sides of the back of the sand-blocking plate. The adjustment structure includes a first rotating seat, a second rotating seat, a sleeve seat, a fixing sleeve, a fixing screw, a first fixed pulley, a second fixed pulley, and a pulling rope.

[0019] The first rotating seat is fixedly installed on the back of the sand-blocking plate and located outside the sand-blocking sleeve. The second rotating seat is anchored in the soil on the back of the sand-blocking plate. The sleeve seat is rotatably connected inside the first rotating seat. The tension sleeve is rotatably connected to the sleeve seat. The rotation direction of the sleeve seat is vertical. The front end of the tension screw is threaded into the tension sleeve, and the rear end is rotatably connected to the second rotating seat. The rotation direction of the tension screw is also vertical. The first fixed pulley is rotatably installed on the lower part of the two side walls of the sand-blocking plate. The second fixed pulley is rotatably installed on the upper part of the two side walls of the sand-blocking plate. A gap is left between the inner walls of the two sides of the sand-blocking sleeve and the two side walls of the sand-blocking plate for installing the first and second fixed pulleys. One end of the pull rope is fixedly connected to the soil on the back of the sand-blocking plate, and the other end is successively wound around the first and second fixed pulleys and then fixedly connected to the inner wall of the back of the sand-blocking sleeve.

[0020] This adjustable structure allows for adjustment of the sand-blocking plate's tilt angle by rotating the tension sleeve, which slides on the tension screw. As the tilt angle gradually increases, it moves the first fixed pulley away from the bottom end of the traction rope, pulling the top end of the traction rope upward. This, in turn, raises the sand-blocking sleeve, increasing the height of the sand-blocking belt as the tilt angle increases to compensate for the height decrease caused by the tilt angle, ensuring the sand-blocking effect. Furthermore, placing the tension sleeve on the back of the sand-blocking plate with its opening facing downwards makes it difficult for sand to enter the sleeve, thus extending the device's service life.

[0021] Further defining the sand-fixing zone, the grid-like barrier zone includes several sand-fixing grids, each of which is a rectangular woven mesh with a length and width of 7m and a height of 1.5m.

[0022] Further defining, the low vertical sand-fixing belt includes several low sand-fixing grids, which are rectangular woven nets with a length and width of 1.5m and a height of 30cm.

[0023] Further defined, the first sand-blocking forest belt includes several first planting frames and first sand-loving shrubs; the first planting frames are fixed to the ground in a rectangular array, each with a length and width of 1.5m and a height of 30cm, and the first sand-loving shrubs are planted in the first planting frames; by setting up the first planting frames to fix the ground surface, the roughness of the dune surface is effectively increased, the wind speed is reduced, and the flow of wind and sand is reduced. At the same time, it can also fix the sand particles on the dune surface and prevent the sand particles on the ground from being blown away. Planting the first sand-loving shrubs in the first planting frames can effectively improve the survival rate of the sand-loving shrubs.

[0024] Further defined, the photovoltaic area includes photovoltaic panels, photovoltaic frames, photovoltaic mounting frames, photovoltaic planting frames, photovoltaic units, water-saving pools, liquid pumps, return water pipes, main irrigation pipes and branch irrigation pipes;

[0025] The photovoltaic panels are fixedly installed inside the photovoltaic frame, which is then fixedly connected to the photovoltaic mounting bracket to form a photovoltaic unit. In the installed state, the photovoltaic panels are tilted to the south. Several photovoltaic units are arranged in a rectangular array. A photovoltaic planting frame is arranged in a rectangular array between two rows of photovoltaic units. Sand-fixing plants are planted inside the photovoltaic planting frame. The surface of the area directly below the photovoltaic unit is covered with a gravel layer, with a gravel coverage rate of 40%-50%.

[0026] The water-saving pool is buried in the soil where the photovoltaic area is located. Each photovoltaic frame has a water collection tank at the bottom. The water collection tank is connected to the water-saving pool through a return water pipe. The liquid pump is located at the bottom of the water-saving pool. The number of liquid pumps is the same as the number of intervals between two adjacent rows of photovoltaic units. The number of sprinkler main pipes is the same as the number of liquid pumps. The sprinkler main pipes are connected to the outlet end of the liquid pumps. The sprinkler branch pipes are connected to the sprinkler main pipes. The sprinkler main pipes irrigate the sand-fixing plants in all photovoltaic planting frames in the same row through the sprinkler branch pipes.

[0027] This water-saving pond design allows rainwater to be collected through a collection trough, which can then be used to irrigate sand-fixing plants during the dry season, improving their survival rate and thus enhancing the sand-fixing effect. It also saves water resources that are already scarce in desert areas.

[0028] Further defined, the second sand-blocking forest belt includes several second planting frames and second sand-loving shrubs; the second planting frames are arranged in a rectangular array and fixed to the ground, with each second planting frame being 1.5m long and wide and 30cm high, and the second sand-loving shrubs are planted within the second planting frames.

[0029] Further defined, the restoration area includes a fence, restoration planting frames, and restoration sand shrubs; the fence is a rectangular frame fixed to the ground of the sandy area, the restoration planting frames are arranged in a rectangular array on the ground inside the fence, and the restoration sand shrubs are planted in the restoration planting frames.

[0030] To further define the scope, maintenance access roads are provided on both the desert and oasis sides of the photovoltaic area, and the ground of these access roads is also covered with a gravel layer; the provision of these access roads facilitates the maintenance of the ecological barrier system by personnel.

[0031] The beneficial effects of this invention are as follows: by systematically integrating multiple levels of structures such as sand source isolation, grid sand fixation, windbreak forest belts, extensive array sand control, and enclosure and restoration, a continuous ecological protection chain is constructed from the desert side to the oasis side, which effectively improves the system's sand prevention and fixation capabilities, ensuring the operational stability and power generation efficiency of the photovoltaic power station, and improving the ecological environment on the edge of the desert. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall layout of the present invention;

[0033] Figure 2 A schematic diagram of the internal structure of a sand dune retaining zone from a frontal view.

[0034] Figure 3 A schematic diagram of the internal structure of the sand dune retaining zone from the left view.

[0035] Figure 4 This is a partial structural diagram of the photovoltaic zone;

[0036] Figure 5 This is a schematic diagram of the photovoltaic panel.

[0037] Figure 6 Top view of the main sprinkler pipe and sprinkler branch pipes.

[0038] The symbols for each component are as follows:

[0039] 1. Sand dune blocking strip, 11. Sand blocking base, 111. Anchor bolt, 12. Hinge lug, 13. Sand blocking plate, 14. Sand blocking sleeve, 15. Adjustment structure, 151. First rotating seat, 152. Second rotating seat, 153. Sleeve seat, 154. Tensioning sleeve, 155. Tensioning screw, 156. First fixed pulley, 157. Second fixed pulley, 158. Pulling rope, 2. Grid blocking strip, 3. Low vertical sand fixing strip, 4. First sand blocking forest belt, 5. Operation and maintenance passage, 6. Photovoltaic area, 61. Photovoltaic panel, 62. Photovoltaic frame, 621. Water collection trough, 63. Photovoltaic fixing frame, 64. Photovoltaic planting frame, 65. Photovoltaic unit, 66. Water saving pool, 67. Liquid pump, 68. Return water pipe, 69. Sprinkler irrigation main pipe, 610. Sprinkler irrigation branch pipe, 7. Second sand blocking forest belt, 8. Restoration area. Detailed Implementation

[0040] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0041] Example:

[0042] like Figures 1-6 As shown, a desert edge photovoltaic ecological barrier system includes, from the desert side to the oasis side, a sand dune blocking belt 1, a grid blocking belt 2, a low vertical sand-fixing belt 3, a first sand-blocking forest belt 4, an operation and maintenance channel 5, a photovoltaic area 6, an operation and maintenance channel 5, a second sand-blocking forest belt 7, and a restoration area 8.

[0043] The dune blocking belt 1 is set on the sand ridge line of the dune chain. The tilt angle and height can be adjusted by the adjustment structure 15. The dune blocking belt 1 is used for the initial blocking and deposition of wind and sand. The dune blocking belt 1 includes a sand blocking base 11, a hinge ear 12, a sand blocking plate 13 and a sand blocking shell 14. The sand blocking base 11 is anchored in the soil on the sand ridge line by the anchor rod 111. The hinge ear 12 is set vertically on both sides of the sand blocking base 11. The bottom sides of the sand blocking plate 13 are hinged to the hinge ear 12. The sand blocking shell 14 is slidably fitted on the top of the sand blocking plate 13. The height of the sand blocking shell 14 can be adjusted by the adjustment structure 15. The dune blocking belt 1 is arranged in two rows along the direction from the desert side to the oasis side. Each row of the dune blocking belt 1 includes several sand blocking plates 13 arranged at intervals. The two rows of sand blocking plates 13 are staggered.

[0044] The adjustment structure 15 has two sets, respectively located on both sides of the back of the sand-blocking plate 13. The adjustment structure 15 includes a first rotating seat 151, a second rotating seat 152, a sleeve seat 153, a fixing sleeve 154, a fixing screw 155, a first fixed pulley 156, a second fixed pulley 157, and a pulling rope 158. The first rotating seat 151 is fixedly located on the back of the sand-blocking plate 13 and outside the sand-blocking casing 14. The second rotating seat 152 is anchored in the soil on the back of the sand-blocking plate 13. The sleeve seat 153 is rotatably connected inside the first rotating seat 151. The fixing sleeve 154 is rotatably connected to the sleeve seat 153. The rotation direction of the sleeve seat 153 is vertical. The fixing screw 155... The front end is threaded into the tension sleeve 154, and the rear end is rotatably connected to the second rotating seat 152. The rotation direction of the tension screw 155 is also vertical. The first fixed pulley 156 is rotatably located on the lower part of the two side walls of the sand-blocking plate 13, and the second fixed pulley 157 is rotatably located on the upper part of the two side walls of the sand-blocking plate 13. The two side inner walls of the sand-blocking sleeve 14 and the two side walls of the sand-blocking plate 13 are spaced apart for installing the first fixed pulley 156 and the second fixed pulley 157. One end of the pulling rope 158 is fixedly connected to the soil on the back of the sand-blocking plate 13, and the other end is successively wound around the first fixed pulley 156 and the second fixed pulley 157, and then fixedly connected to the back inner wall of the sand-blocking sleeve 14.

[0045] The grid barrier 2 uses a woven mesh structure to three-dimensionally intercept and stabilize large-scale quicksand; the grid barrier 2 includes several sand-fixing high grids, which are rectangular HDPE woven meshes with a length and width of 7m and a height of 1.5m.

[0046] The low vertical sand-fixing belt 3 also stabilizes the near-surface wind-blown sand and fixes loose sand particles through a woven mesh structure; the low vertical sand-fixing belt 3 includes several sand-fixing low squares, which are rectangular HDPE woven meshes with a length and width of 1.5m and a height of 30cm, and a laying width of 40m.

[0047] The first sand-blocking forest belt 4 forms the first biological sand-blocking barrier through sand-loving shrubs; the first sand-blocking forest belt 4 includes several first planting frames and first sand-loving shrubs; the first planting frames are fixed to the ground in a rectangular array, the length and width of the first planting frames are both 1.5m and the height is 30cm, and the first sand-loving shrubs are planted in the first planting frames; the first planting frames are straw squares, and the first sand-loving shrubs include Haloxylon ammodendron, Caragana korshinskii and Caragana sinica, and the plant spacing and row spacing of the first sand-loving shrubs are both 1.5m;

[0048] Photovoltaic zone 6 is used for the generation of clean electricity. Photovoltaic zone 6 includes photovoltaic panels 61, photovoltaic frames 62, photovoltaic mounting frames 63, photovoltaic planting frames 64, photovoltaic units 65, a water-saving pool 66, a liquid pump 67, a return water pipe 68, a main irrigation pipe 69, and branch irrigation pipes 610. Photovoltaic panels 61 are fixedly installed within photovoltaic frames 62, which are fixedly connected to photovoltaic mounting frames 63 to form photovoltaic units 65. In the installed state, the photovoltaic panels 61 are tilted southward. Several photovoltaic units 65 are arranged in a rectangular array. Photovoltaic planting frames 64 are arranged in a rectangular array between two rows of photovoltaic units 65. Photovoltaic planting frames 64 are also made of straw squares and contain sand-fixing plants. The surface of the area directly below the photovoltaic units 65 is covered with a gravel layer, with a gravel coverage rate of [missing information]. 40%-50%; The water-saving pool 66 is buried in the soil where the photovoltaic area 6 is located. Each photovoltaic frame 62 has a water collection trough 621 at the bottom. The water collection trough 621 is connected to the water-saving pool 66 through the return water pipe 68. The liquid pump 67 is located at the bottom of the water-saving pool 66. The number of liquid pumps 67 is the same as the number of intervals between two adjacent rows of photovoltaic units 65. The number of sprinkler main pipes 69 is the same as the number of liquid pumps 67. The sprinkler main pipes 69 are connected to the outlet end of the liquid pumps 67. The sprinkler branch pipes 610 are connected to the sprinkler main pipes 69. The sprinkler main pipes 69 irrigate the sand-fixing plants in all photovoltaic planting frames 64 in the same row through the sprinkler branch pipes 610. The ground of the maintenance channel 5 is also paved with a gravel layer. The sand-fixing plants include Haloxylon ammodendron, Caragana korshinskii, Calligonum mongolicum, Icegrass, and Suaeda salsa.

[0049] The second sand-blocking forest belt 7 forms a second biological sand-blocking barrier through sand-loving shrubs; the second sand-blocking forest belt 7 includes several second planting frames and second sand-loving shrubs; the second planting frames are arranged in a rectangular array and fixed to the ground, with each second planting frame being 1.5m long and wide and 30cm high, and the second sand-loving shrubs are planted in the second planting frames; the second planting frames are also straw squares, and the second sand-loving shrubs include Haloxylon ammodendron, Caragana korshinskii and Caragana sinica, with the spacing between the second sand-loving shrubs and the row spacing also being 1.5m;

[0050] Restoration Zone 8 provides a third biological barrier against sand by planting desert-tolerant tree species. Restoration Zone 8 includes a fence, restoration planting frames, and restoration sand shrubs. The fence is a rectangular frame fixed to the ground in the sand. The restoration planting frames are arranged in a rectangular array on the ground inside the fence. The restoration sand shrubs are planted in the restoration planting frames. The restoration planting frames are also made of straw squares. The restoration sand shrubs include ice grass, sand rice, tamarisk seeds, and Suaeda salsa.

[0051] The sand dune barrier belt 1 initially blocks and deposits windblown sand. Sand not blocked by the sand dune barrier belt 1 enters the grid barrier belt 2, where a woven mesh structure intercepts it. The low-lying vertical sand-fixing belt 3 stabilizes the near-surface windblown sand not blocked by the grid barrier belt 2. Further, sand-loving shrubs block any escaping windblown sand. This reduces the coverage of windblown sand on the photovoltaic area 6, improving the stability of power generation in the photovoltaic area 6. A second sand-blocking forest belt 7 acts as a second biological barrier, further blocking escaping windblown sand and significantly reducing the amount of windblown sand entering the restoration area 8. The restoration area 8, planted with desert-tolerant tree species, can serve as a research subject for natural restoration and is beneficial for research on sandy land greening. The sand dune barrier belt 1 is designed with adjustable angle and height. The sand-blocking belt 1 is tilted towards the desert side, and the tilt angle can be adjusted according to the wind and sand season. This effectively weakens the wind-blown sand flow that carries the largest amount of sand close to the ground surface. It allows the airflow to rise in front of the plate, and the sand particles fall after impacting the plate surface due to inertia, forming an effective vortex deceleration zone behind the plate, promoting sand deposition and improving the blocking effect. A sand-blocking shell 14 is set up, and the sand-blocking shell 14 is moved up and down on the sand-blocking plate 13 by the adjustment structure 15, thereby realizing the height adjustment of the sand-blocking belt 1. This way, placing the sand-blocking shell 14 above the sand-blocking plate 13 also prevents wind and sand from entering the sand-blocking shell 14. This arrangement of two rows of sand-blocking plates 13 can greatly reduce the width and weight of the sand-blocking plates 13, and greatly reduce the need for the adjustment structure 15. The pressure, and the staggered arrangement of the two rows of sand-blocking plates 13 can also block and intercept the gaps in the first row of sand-blocking plates 13; with this adjustment structure 15, the tension sleeve 154 can be rotated to slide on the tension screw 155, thereby adjusting the tilt angle of the sand-blocking plate 13. As the tilt angle of the sand-blocking plate 13 gradually increases, it will drive the first fixed pulley 156 away from the bottom end of the pulling rope 158, thereby pulling the top end of the pulling rope 158 upward, and then driving the sand-blocking sleeve 14 upward, so that the height of the sand dune sand-blocking belt 1 increases as the tilt angle increases, in order to compensate for the height decrease caused by the tilt angle, and ensure the blocking effect of wind and sand. Furthermore, the tension sleeve 154 is set on the back of the sand-blocking plate 13, so that the tension sleeve 154 can be adjusted to increase the height of the sand dune sand-blocking belt 1. The downward-facing opening of the fixed sleeve 154 prevents wind and sand from easily entering, thus extending the lifespan of the device. The ground surface is fixed by setting up a first planting frame, effectively increasing the roughness of the dune surface, reducing wind speed and sand movement, and also fixing sand particles on the dune surface to prevent them from being blown away. Planting the first sand-fixing shrub within the first planting frame effectively improves the survival rate of the shrub. The water-saving pool 66 collects rainfall through the water collection trough 621, irrigating the sand-fixing plants during the dry season, improving their survival rate and thus enhancing the sand-fixing effect, while also conserving the already scarce water resources in desert areas. The maintenance access 5 facilitates personnel maintenance of the ecological barrier system.

[0052] The following is a comparison table of the effectiveness of this application and existing sand control measures:

[0053]

Claims

1. A photovoltaic ecological barrier system for desert edges, characterized in that, From the desert side to the oasis side, the following are included in sequence: The dune blocking belt (1) is set on the sand ridge line of the dune chain and the tilt angle and height can be adjusted by adjusting the structure (15). The dune blocking belt (1) is used for the initial blocking and deposition of wind and sand. The grid-like barrier (2) uses a woven mesh structure to three-dimensionally block and stabilize large-scale quicksand. The low vertical sand-fixing belt (3) also stabilizes the near-surface wind-blown sand and fixes loose sand particles through a woven mesh structure; The first sand-blocking forest belt (4) forms the first biological sand-blocking barrier through sand-loving shrubs; Photovoltaic zone (6) is used for the generation of clean electricity; The second sand-blocking forest belt (7) forms a second biological sand-blocking barrier through sand-loving shrubs; The restoration area (8) provides a third biological sand-blocking barrier by planting desert-resistant tree species; The dune sand-blocking belt (1) includes a sand-blocking base (11), a hinge ear (12), a sand-blocking plate (13), and a sand-blocking shell (14). The sand-blocking base (11) is anchored in the soil on the sand ridge line by an anchor rod (111). The hinge ear (12) is vertically arranged on both sides of the sand-blocking base (11). The bottom sides of the sand-blocking plate (13) are hinged to the hinge ear (12). The sand-blocking shell (14) is slidably fitted on the top of the sand-blocking plate (13). The height of the sand-blocking shell (14) is adjusted by the adjustment structure (15). The dune sand-blocking belt (1) is arranged in two rows along the direction from the desert side to the oasis side. Each row of the dune sand-blocking belt (1) includes several sand-blocking plates (13) arranged at intervals. The two rows of sand-blocking plates (13) are staggered. The adjustment structure (15) is provided in two sets, respectively located on both sides of the back of the sand-blocking plate (13). The adjustment structure (15) includes a first rotating seat (151), a second rotating seat (152), a sleeve seat (153), a tension sleeve (154), a tension screw (155), a first fixed pulley (156), a second fixed pulley (157), and a pulling rope (158). The first rotating seat (151) is fixedly disposed on the back of the sand-blocking plate (13) and located outside the sand-blocking sleeve (14). The second rotating seat (152) is anchored in the soil on the back of the sand-blocking plate (13). The sleeve seat (153) is rotatably connected to the first rotating seat (151). The tension sleeve (154) is rotatably connected to the sleeve seat (153). The rotation direction of the sleeve seat (153) is vertical. The front end of the tension screw (155) is threadedly connected to the tension sleeve (154), and the rear end is rotatably connected to the second rotating seat (152). The rotation direction of the tension screw (155) is vertical. The direction is also vertical. The first fixed pulley (156) is rotatably disposed on the lower part of the two side walls of the sand-blocking plate (13), and the second fixed pulley (157) is rotatably disposed on the upper part of the two side walls of the sand-blocking plate (13). A gap is left between the inner walls of the two sides of the sand-blocking sleeve (14) and the two side walls of the sand-blocking plate (13) for installing the first fixed pulley (156) and the second fixed pulley (157). One end of the pulling rope (158) is fixedly connected to the soil on the back of the sand-blocking plate (13), and the other end is successively wound around the first fixed pulley (156) and the second fixed pulley (157) and then fixedly connected to the inner wall of the back of the sand-blocking sleeve (14).

2. The desert edge photovoltaic ecological barrier system according to claim 1, characterized in that, The grid-like barrier (2) includes several sand-fixing grids, which are rectangular woven nets with a length and width of 7m and a height of 1.5m.

3. The desert edge photovoltaic ecological barrier system according to claim 2, characterized in that, The low vertical sand-fixing belt (3) includes several sand-fixing low square grids, which are rectangular woven nets with a length and width of 1.5m and a height of 30cm.

4. The desert edge photovoltaic ecological barrier system according to claim 3, characterized in that, The first sand-blocking forest belt (4) includes several first planting frames and first sand-loving shrubs; the first planting frames are fixed to the ground in a rectangular array, and the length and width of the first planting frames are 1.5m and the height is 30cm. The first sand-loving shrubs are planted in the first planting frames.

5. The desert edge photovoltaic ecological barrier system according to claim 4, characterized in that, The photovoltaic area (6) includes photovoltaic panels (61), photovoltaic frames (62), photovoltaic mounting frames (63), photovoltaic planting frames (64), photovoltaic units (65), water-saving pools (66), liquid pumps (67), return water pipes (68), main irrigation pipes (69) and branch irrigation pipes (610). The photovoltaic panel (61) is fixedly installed inside the photovoltaic frame (62), and the photovoltaic frame (62) is fixedly connected to the photovoltaic mounting bracket (63) to form a photovoltaic unit (65). The photovoltaic panel (61) is tilted to the south when installed. Several photovoltaic units (65) are arranged in a rectangular array. The photovoltaic planting frame (64) is arranged in a rectangular array between two rows of photovoltaic units (65). Sand-fixing plants are planted in the photovoltaic planting frame (64). The surface of the area directly below the photovoltaic unit (65) is covered with a gravel layer with a gravel coverage rate of 40%-50%. The water-saving pool (66) is buried in the soil where the photovoltaic area (6) is located. Each photovoltaic frame (62) has a water collection trough (621) at its bottom. The water collection trough (621) is connected to the water-saving pool (66) through a return water pipe (68). The liquid pump (67) is located at the bottom of the water-saving pool (66). The number of liquid pumps (67) is the same as the number of intervals between the photovoltaic units (65) in two adjacent rows. The number of sprinkler irrigation mains (69) is the same as the number of liquid pumps (67). The sprinkler irrigation mains (69) are connected to the outlet end of the liquid pumps (67). The sprinkler irrigation branch pipes (610) are connected to the sprinkler irrigation mains (69). The sprinkler irrigation mains (69) irrigate the sand-fixing plants in all the photovoltaic planting frames (64) in the same row through the sprinkler irrigation branch pipes (610).

6. The desert edge photovoltaic ecological barrier system according to claim 5, characterized in that, The second sand-blocking forest belt (7) includes several second planting frames and second sand shrubs; the second planting frames are fixed to the ground in a rectangular array, and the length and width of the second planting frames are 1.5m and the height is 30cm. The second sand shrubs are planted in the second planting frames.

7. The desert edge photovoltaic ecological barrier system according to claim 6, characterized in that, The restoration area (8) includes a fence, restoration planting frames and restoration sand shrubs; the fence is a rectangular frame and fixed to the ground of the sandy land, the restoration planting frames are arranged in a rectangular array on the ground inside the fence, and the restoration sand shrubs are planted in the restoration planting frames.

8. The desert edge photovoltaic ecological barrier system according to claim 7, characterized in that, The photovoltaic area (6) has operation and maintenance channels (5) on both the desert side and the oasis side, and the ground of the operation and maintenance channels (5) is also paved with a gravel layer.

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