Grid chamber movable sand barrier sand prevention system with dome structure

Abstract

The invention discloses a geocell movable sand barrier sand prevention system with a dome structure. The lattice chamber movable sand barrier sand prevention system with the dome structure comprises a polygonal movable sand barrier sand blocking belt, a triangular movable sand barrier sand fixing belt and a grid-shaped movable sand barrier sand fixing belt which are sequentially arranged in the main wind direction, and the polygonal movable sand barrier sand blocking belt, the triangular movable sand barrier sand fixing belt and the grid-shaped movable sand barrier sand fixing belt are arranged in a strip shape and are parallel to one another. Each strip extends in the direction perpendicular to the main wind direction. According to the geocell live sand barrier sand prevention system with the dome structure, the structures and functions of plant sand barriers and mechanical sand barriers are combined into a whole, the original sand barrier pattern can be expanded all around through layering propagation, and long-term wind resistance and sand fixation are achieved; the near-surface blank areas among the plant shrubs are filled through division plants generated through layering propagation, the wind resistance and sand storage functions are high, and the good sustainable biological treatment effect is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ecological environment governance, and particularly relates to a sand prevention system of a grid live sand barrier with a dome structure. Background Art

[0002] The live sand barrier is built on mobile sandy land. By relying on the natural foliage density and height of suitable and excellent sand-growing shrubs, living plants are arranged in strips or grids to form a fence-like sand barrier, with multiple layers of defense, which can reduce wind force, deposit passing sand, reduce the wind and sand damage in the protected area, and at the same time protect the fragile water balance in the sandy land between the barriers. It has the characteristics of low water consumption, low coverage, and low-cost biological control.

[0003] Currently, the plant species suitable for use as live sand barriers include Salix psammophila, Caragana korshinskii, Artemisia desertorum, Amorpha fruticosa, Calligonum mongolicum, Hippophae rhamnoides, Salix bangongensis, Tamarix chinensis, Caryopteris mongolica, Buddleja lindleyana, naked barley, oats, wheat, Jerusalem artichoke tubers, etc. These plant materials are easily available. Generally, in sandy areas, the principle of planting suitable trees on suitable land is adopted, and strip-shaped or grid-shaped live sand barriers are constructed through planting, cutting, and sowing methods, with relatively high survival rates. However, when this live sand barrier technology is used to control sand disasters, the plant stress resistance limit and low soil water content are important restrictive factors. No matter how the live sand barrier technology combinations of selecting suitable and highly stress-resistant plants and using efficient water-saving measures are screened, the control effect of full-coverage afforestation cannot be achieved.

[0004] The strip-shaped or grid-shaped live sand barriers established by closely inserting branches enhance the surface erosion resistance ability with the natural reproduction of plants, which is of great significance for the regional ecological governance project mainly using biological control measures. However, there are still some problems in the current practice of sand prevention projects with live sand barriers. First, a large number of branches such as Salix psammophila are closely inserted in strips or squares. As Figure 1a shown, the general cutting spacing of branches is 1 - 2 cm, which consumes a huge amount of branches and water. The above-ground branches compete with each other for space and sunlight, and the underground roots also compete for water and nutrients, so the survival rate is not high. Even if the survival rate is relatively high in the early stage due to sufficient water, the survival rate will be low in the later stage due to interspecific competition and high water consumption characteristics, and its sand prevention and ecological effects will be significantly reduced.

[0005] Secondly, for the live sand barriers formed by row-strip or grid-shaped shrubs such as Salix psammophila, due to the natural inverted conical crown structure of the shrubs, a blank area will be formed near the ground between adjacent two shrubs. As Figure 1b shown, this allows the near-surface wind-sand flow to penetrate directly, thus weakening the wind-sand control effect, especially the sand fixation effect is significantly reduced. Summary of the Invention

[0006] The main purpose of the present invention is to provide a sand prevention system of a grid live sand barrier with a dome structure, so as to overcome the deficiencies in the prior art.

[0007] To achieve the foregoing invention object, the technical solution adopted by the present invention includes: The present invention provides a sand prevention system of a lattice live sand barrier with a dome structure, which includes a polygonal live sand barrier sand blocking belt, a triangular live sand barrier sand fixation belt, and a square live sand barrier sand fixation belt arranged in sequence along the main wind direction. The polygonal live sand barrier sand blocking belt, the triangular live sand barrier sand fixation belt, and the square live sand barrier sand fixation belt are all arranged in a strip shape and are parallel to each other, and each strip extends along a direction perpendicular to the main wind direction; The polygonal live sand barrier sand blocking belt includes a plurality of polygonal live sand barriers. Each polygonal live sand barrier includes a plurality of first mother plants and a plurality of first daughter plants. The first mother plants are arranged in a polygonal layout on the ground, and each first mother plant is respectively arranged at a corresponding vertex of the polygon. At least one first daughter plant is arranged on each side of the polygon. At least one of the first daughter plants is formed by layering propagation from the branches of the corresponding first mother plant. One vertex of each polygon is arranged facing the main wind direction. The branches distributed oppositely on the plurality of first mother plants or the plurality of first daughter plants in each polygonal live sand barrier are connected to each other to form an arc-shaped multi-layer dome structure; The triangular live sand barrier sand fixation belt includes a plurality of triangular live sand barriers. Each triangular live sand barrier includes three second mother plants and a plurality of second daughter plants. The three second mother plants are arranged in a triangular layout on the ground, and each second mother plant is respectively arranged at a corresponding vertex of the triangle. At least one second daughter plant is arranged on each side of the triangle. At least one of the second daughter plants is formed by layering propagation from the branches of the corresponding second mother plant. One vertex of each triangle is arranged facing the main wind direction. The branches distributed oppositely on the three second mother plants or the plurality of second daughter plants in each triangular live sand barrier are connected to each other to form an arc-shaped multi-layer dome structure; The square live sand barrier sand fixation belt includes a plurality of square live sand barriers. Each square live sand barrier includes four third mother plants and a plurality of third daughter plants. The four third mother plants are arranged in a quadrilateral layout on the ground, and each third mother plant is respectively arranged at a corresponding vertex of the quadrilateral. At least one third daughter plant is arranged on each side of the quadrilateral. At least one of the third daughter plants is formed by layering propagation from the branches of the corresponding third mother plant. One vertex of each quadrilateral is arranged facing the main wind direction. The branches distributed oppositely on the four third mother plants or the plurality of third daughter plants in each square live sand barrier are connected to each other to form an arc-shaped multi-layer dome structure.

[0008] Compared with the prior art, the advantages of the present invention include: 1) The sand prevention system of the present invention is composed of living sand barriers propagated by layering. The bottom surface has a polygonal structure such as a triangular or square grid shape, and the top has a multi-layered dome with an arc shape. The side barriers are composed of branched shrubs propagated by tillering of the mother plants. The dome structures are connected to each other in different height spaces between the shrubs to form a multi-layered three-dimensional sand storage grid structure. The branches forming the grid have a high density, and the sand fixation effect is good. Moreover, it can integrate the structures and functions of mechanical sand barriers and plant sand barriers. It can expand the original sand barrier pattern around by layering propagation, achieving long-term wind resistance and sand fixation. The larger the scale and the more complex the layers of the dome and side barriers are in the later stage, the better the protection benefit will be.

[0009] 2) The sand blocking belt of the polygonal living sand barrier of the present invention intercepts the flowing sand from the upwind direction. A small amount of the flowing sand that slips through is successively fixed layer by layer by the sand fixation belts of triangular and square grid living sand barriers in the downwind direction. The three cooperate with each other. The sand blocking belt suppresses the wind force through the multi-layered blocking of the dome and side barriers, and the sand fixation belt reduces the wind force through the flow disturbance and friction of the dome and side barriers. The entire system can block and fix most of the sand and wind flow.

[0010] 3) In the sand prevention system of the present invention, the mother plants are sparsely planted at an interval of 2 - 5 m. Compared with the traditional close planting and cutting at an interval of 1 - 50 cm, the water consumption is less. Moreover, the mother plants and the daughter plants are connected as a whole by layering, and there is a complementary function of water and nutrients between them, further reducing the overall water consumption. With the water supply from the mother plants, the survival rate of the offspring shrub propagation is high, and the stress resistance and environmental adaptability are strong. It can be applied to most sandy habitats suitable for planting sand plants such as Salix psammophila.

[0011] 4) In the triangular sand fixation belt and the square grid sand fixation belt of the present invention, each triangle or square is arranged at intervals in a pyramid layout, and one of the vertices is aligned with the main wind direction. When the air flow enters the living sand barrier, it first impacts the mother plant and then is diverted obliquely backward, and then frictions and flows along the edge of the barrier formed by the daughter plants. After impacting the mother plant in the downwind direction, it is diverted again, and the above process is repeated. After the air flow is diverted multiple times, its energy will be greatly weakened, and the sedimentation effect in the sand fixation belt is strong.

[0012] 5) The daughter plants of the present invention fill the near-surface blank area between the mother plant shrubs, making up for the sand leakage defect in the blank area caused by the natural inverted cone shape of the sand-growing shrubs, and can intercept and fix the sand and wind flow in all directions.

[0013] 6) The sand prevention system of the grid living sand barrier with a dome structure of the present invention has a low afforestation cost. While effectively blocking and fixing the flowing sand, it greatly reduces the usage amount of plants and cuttings per unit area, reduces the water loss in the sandy land, makes up for the defects in large-scale afforestation management, and has a good sustainable biological management effect. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1a is a diagram of strip or grid-shaped live sand barriers in the prior art; Figure 1b is a diagram of the natural inverted conical tree crown of shrubs in strip or grid-shaped live sand barriers in the prior art; Figure 2 is a schematic diagram of the overall structure of a cellular live sand barrier sand prevention system with a dome structure provided by the present invention; Figure 3 is a schematic diagram of a triangular live sand barrier structure with a dome structure provided in a typical embodiment of the present invention; Figure 4 is a schematic diagram of a square live sand barrier structure with a dome structure provided in a typical embodiment of the present invention; Figure 5 is a schematic diagram of the structure of ramets between two adjacent mother plants provided in a typical embodiment of the present invention; Explanation of reference numerals: 1 - plant; 10 - first strip; 11 - first mother plant; 12 - first ramet; 121 - first-generation layering; 122 - first-generation shrub; 123 - second-generation layering; 124 - second-generation shrub; 125 - next-generation layering germinated on the layering; 2 - planting point; 21 - mother plant planting point; 22 - layering planting position; 23 - first-generation layering planting position; 24 - second-generation layering planting position; 3 - dome; 4 - polygon live sand barrier sand-blocking belt; 5 - triangular live sand barrier sand-fixing belt; 6 - square live sand barrier sand-fixing belt; 7 - protected object; 8 - main wind direction; 81 - airflow that has been diverted multiple times; 9 - sand surface; 13 - second strip; 14 - third strip. Detailed implementation manners

[0016] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention through long-term research and a large number of practices. The following will further explain the technical solution, its implementation process and principle in combination with the accompanying drawings and specific embodiments.

[0017] The present invention provides a cellular live sand barrier sand prevention system with a dome structure, which includes a polygon live sand barrier sand-blocking belt, a triangular live sand barrier sand-fixing belt and a square live sand barrier sand-fixing belt arranged in sequence along the main wind direction. The polygon live sand barrier sand-blocking belt, the triangular live sand barrier sand-fixing belt and the square live sand barrier sand-fixing belt are all arranged in a strip shape and are parallel to each other, and each strip extends in a direction perpendicular to the main wind direction; The sand - blocking belt of the polygonal living sand barriers includes a plurality of polygonal living sand barriers. Each polygonal living sand barrier includes a plurality of first mother plants and a plurality of first daughter plants. The first mother plants are arranged in a polygonal pattern on the ground, with each first mother plant respectively set at a corresponding vertex of the polygon. And at least one first daughter plant is arranged on each side of the polygon. At least one of the first daughter plants is formed by layering the branches of a corresponding first mother plant. One vertex of each polygon is aligned with the main wind direction. On the plurality of first mother plants or the plurality of first daughter plants in each polygonal living sand barrier, the branches distributed oppositely are connected to form an arc - shaped multi - layer dome structure; The sand - fixing belt of the triangular living sand barriers includes a plurality of triangular living sand barriers. Each triangular living sand barrier includes three second mother plants and a plurality of second daughter plants. The three second mother plants are arranged in a triangular pattern on the ground, with each second mother plant respectively set at a corresponding vertex of the triangle. And at least one second daughter plant is arranged on each side of the triangle. At least one of the second daughter plants is formed by layering the branches of a corresponding second mother plant. One vertex of each triangle is aligned with the main wind direction. On the three second mother plants or the plurality of second daughter plants in each triangular living sand barrier, the branches distributed oppositely are connected to form an arc - shaped multi - layer dome structure; The sand - fixing belt of the square - shaped living sand barriers includes a plurality of square - shaped living sand barriers. Each square - shaped living sand barrier includes four third mother plants and a plurality of third daughter plants. The four third mother plants are arranged in a quadrilateral pattern on the ground, with each third mother plant respectively set at a corresponding vertex of the quadrilateral. And at least one third daughter plant is arranged on each side of the quadrilateral. At least one of the third daughter plants is formed by layering the branches of a corresponding third mother plant. One vertex of each quadrilateral is aligned with the main wind direction. On the four third mother plants or the plurality of third daughter plants in each square - shaped living sand barrier, the branches distributed oppositely are connected to form an arc - shaped multi - layer dome structure.

[0018] In some embodiments, the first mother plant is a sand - growing shrub. After growing for 2 - 3 years, its height is 2 - 3 m and its crown diameter is 2 - 4 m.

[0019] Further, the first mother plant includes at least any one of sand willows, caraganas, etc. planted by seedlings or cuttings.

[0020] In some embodiments, each first mother plant is planted at a first planting point, and the distance between adjacent first planting points is 2 - 5 m.

[0021] In some embodiments, on the plurality of first mother plants or the plurality of first daughter plants in each adjacent polygonal living sand barrier, the branches distributed oppositely are connected to form an arc - shaped multi - layer dome structure distributed along the height direction.

[0022] Specifically, the branches distributed oppositely on the multiple first mother plants or multiple first offshoots are enclosed and tied with cable ties or ropes to form a multi-layered arc-shaped dome structure with different heights. Since the branches of the first mother plants and the first offshoots are of different lengths, the domes formed by enclosing and tying these branches are multi-layered structures, that is, domes can be formed at different height levels.

[0023] In some embodiments, the polygonal living sand barrier sand-blocking belt further includes multiple first offshoots. At least one first offshoot is distributed between any two adjacent first mother plants in the direction perpendicular to the main wind direction, and at least one of the first offshoots is formed by layering propagation of the branches of a corresponding first mother plant.

[0024] In some embodiments, the multiple polygonal living sand barriers are divided into multiple groups. The polygonal living sand barriers in each group are distributed on a first strip, and are arranged at intervals in sequence along the extending direction of the first strip. The extending direction of the first strip is perpendicular to the main wind direction. The multiple first strips are arranged parallel to each other, and the multiple first strips are connected to each other to form a grid structure; In some embodiments, the polygonal living sand barrier sand-blocking belt includes 3 - 10 first strips, and the width of the first strip is 1.7 - 4.3 m.

[0025] In some embodiments, the polygon includes a triangle or a square grid.

[0026] In some embodiments, at least one of the first offshoots includes a first-generation layering and the branches germinated on the first-generation layering or the plants grown from the first-generation layering, and at least one of the first offshoots includes offspring layering and the branches germinated on the offspring layering or the plants grown from the offspring layering. The offspring layering includes second-generation layering, …, or n-generation layering. The first-generation layering is the branch of the first mother plant. The second-generation layering is the branch of the first offshoot grown from the first-generation layering, and so on. The n-generation layering is the branch of the first offshoot grown from the (n - 1)-generation layering, where n ≥ 2.

[0027] In some embodiments, each side of the polygonal living sand barrier is formed by a shrubbery and the branches of the first mother plant, and the shrubbery is composed of the first offshoots.

[0028] In some embodiments, each first mother plant among the polygonal living sand barriers is planted on a corresponding mother plant planting hole.

[0029] In some embodiments, multiple layering planting positions are arranged at intervals on the line connecting any two first mother plants among each polygonal living sand barrier, and the distance between adjacent layering planting positions is 0.5 - 1 m.

[0030] Further, the first ramets include layering of the first generation, shrubbery of the first generation, layering of the second generation, shrubbery of the second generation, layering of the third generation, shrubbery of the third generation, and branches germinated from the layering of the next generation. The layering propagation includes layering the branches of each first mother plant at multiple layering planting positions simultaneously to obtain the first ramets. Alternatively, the layering propagation includes layering the branches of the first ramets generation by generation. In engineering practice, the above two methods can be used concurrently to accelerate the formation of multiple ramets and shrubbery clusters.

[0031] In some embodiments, the spacing between the first mother plants within the same polygonal live sand barrier is 2 - 5 m.

[0032] In some embodiments, the second mother plants include at least any one of sand willows, caraganas, etc. planted by seedlings or cuttings. After growing for 2 - 3 years, the height of the second mother plants is 2 - 3 m, and the crown width is 2 - 4 m.

[0033] In some embodiments, each second mother plant is planted at a second planting point, and the spacing between adjacent second planting points is 2 - 5 m.

[0034] In some embodiments, multiple triangular live sand barriers are arranged at intervals and are arranged in a triangular pyramid pattern on the ground along the main wind direction.

[0035] In some embodiments, multiple triangular live sand barriers form a high - standing grid structure with a triangular bottom surface.

[0036] In some embodiments, in each adjacent pair of triangular live sand barriers, the branches distributed oppositely on multiple second mother plants or multiple second ramets are connected to form a multi - layer dome structure in an arc shape distributed along the height direction.

[0037] In some embodiments, the triangular live sand barrier sand - fixation zone further includes multiple second ramets. In the direction perpendicular to the main wind direction, at least one second ramet is distributed between any two adjacent second mother plants, and at least one second ramet is formed by layering the branches of a corresponding second mother plant.

[0038] In some embodiments, at least one second ramet includes layering of the first generation and the branches germinated from the layering of the first generation or the plants grown from the layering of the first generation, and at least one second ramet includes layering of the offspring and the branches germinated from the layering of the offspring or the plants grown from the layering of the offspring. The layering of the offspring includes layering of the second generation, …, or layering of the nth generation. The layering of the first generation is the branch of the second mother plant, the layering of the second generation is the branch of the second ramet grown from the layering of the first generation, and so on. The layering of the nth generation is the branch of the second ramet grown from the layering of the (n - 1)th generation, where n≥2.

[0039] In some embodiments, each side of the triangular living sand barrier is formed by shrubs and branches of the second mother plants, and the shrubs are composed of second ramets.

[0040] In some embodiments, each second mother plant among the triangular living sand barriers is planted on a corresponding mother plant planting hole.

[0041] In some embodiments, a plurality of layering planting positions are arranged at intervals on the connection line between any two second mother plants among each triangular living sand barrier, and the distance between adjacent layering planting positions is 0.5 - 1 m.

[0042] Furthermore, the second ramets include first-generation layering, first-generation shrubs, second-generation layering, second-generation shrubs, third-generation layering, third-generation shrubs, and branches germinated from the next-generation layering. The layering propagation includes layering the branches of each second mother plant at a plurality of layering planting positions simultaneously to obtain the second ramets. Alternatively, the layering propagation includes layering the branches of the second ramets generation by generation. In engineering practice, the above two methods can be used concurrently to accelerate the formation of multiple ramets and shrub clusters.

[0043] In some embodiments, the shortest distance between adjacent triangular living sand barriers is 1 - 2.5 m.

[0044] In some embodiments, the distance between second mother plants within the same triangular living sand barrier is 2 - 5 m.

[0045] In some embodiments, a plurality of the triangular living sand barriers are divided into multiple groups, and the triangular living sand barriers in each group are distributed on a second strip and are arranged at intervals in sequence along the extension direction of the second strip. The extension direction of the second strip is perpendicular to the main wind direction, and a plurality of the second strips are arranged parallel to each other.

[0046] In some embodiments, the sand-fixing belt of the triangular living sand barrier includes 3 - 10 second strips, the width of each second strip is 1.7 - 4.3 m, the second strips are arranged at intervals, and the distance between adjacent second strips is 1 - 2.5 m.

[0047] In some embodiments, the third mother plants include at least any one of sand willows, caraganas, etc. planted by seedlings or cuttings. The height of the third mother plants is 2 - 3 m, and the crown width is 2 - 4 m.

[0048] In some embodiments, each third mother plant is planted at a third planting point, and the distance between adjacent third planting points is 2 - 5 m.

[0049] In some embodiments, the branches distributed oppositely on multiple third mother plants or multiple third ramets in each adjacent square living sand barrier are connected to form a multi-layered dome structure in an arc shape distributed along the height direction.

[0050] In some embodiments, multiple square-shaped live sand barriers are arranged at intervals and are arranged in a triangular pattern on the ground along the main wind direction.

[0051] In some embodiments, the sand fixation zone of the square-shaped live sand barrier further includes a plurality of third offshoots. At least one third offshoot is distributed between any two adjacent third mother plants in a direction perpendicular to the main wind direction, and at least one of the third offshoots is formed by layering propagation from the branches of a corresponding third mother plant.

[0052] In some embodiments, at least one of the third offshoots includes a first-generation layering and the branches germinated on the first-generation layering or the plants grown from the first-generation layering, and at least one of the third offshoots includes offspring layering and the branches germinated on the offspring layering or the plants grown from the offspring layering. The offspring layering includes second-generation layering, …, or nth-generation layering. The first-generation layering is the branch of the third mother plant, the second-generation layering is the branch of the third offshoot grown from the first-generation layering, and so on. The nth-generation layering is the branch of the third offshoot grown from the (n - 1)th-generation layering, where n ≥ 2.

[0053] In some embodiments, each side of the square-shaped live sand barrier is formed by shrubs and the branches of the third mother plants, and the shrubs are composed of third offshoots.

[0054] In some embodiments, each third mother plant in the square-shaped live sand barrier is planted in a corresponding mother plant planting hole.

[0055] In some embodiments, a plurality of layering planting positions are arranged at intervals on the line connecting any two third mother plants in each square-shaped live sand barrier, and the distance between adjacent layering planting positions is 0.5 - 1 m.

[0056] In some embodiments, the shortest distance between adjacent square-shaped live sand barriers is 1 - 2.5 m.

[0057] In some embodiments, the distance between third mother plants within the same square-shaped live sand barrier is 2 - 5 m.

[0058] In some embodiments, the multiple square-shaped live sand barriers are divided into multiple groups. The square-shaped live sand barriers in each group are distributed on a third strip and are arranged at intervals in sequence along the extension direction of the third strip. The extension direction of the third strip is perpendicular to the main wind direction, and the multiple third strips are arranged parallel to each other. In the present invention, the sand fixation zone of the square-shaped live sand barrier is arranged in the most downwind direction, at the position closest to the protected object, forming the last line of defense to completely fix the sand and dust flow of the omitted part.

[0059] In some embodiments, the square-shaped live sand barrier sand-fixing belt includes 3 to 10 third belts, each third belt having a width of 2.8 to 7.1 m, and the third belts are arranged at intervals, with a spacing of 1 to 2.5 m between adjacent third belts.

[0060] In some embodiments, the operation method of layering propagation includes: selecting healthy branches without pests and diseases on the first mother plant, the second mother plant or the third mother plant; pressing the branches into the soil at the planting position, covering and compacting the soil, and fixing the branches.

[0061] In some preferred embodiments, the diameter of the branches is 0.5 to 2 cm, the length is 0.5 to 1.5 m, and the depth of pressing into the soil at the planting position is 10 to 15 cm.

[0062] In some more specific embodiments, the operation method of layering propagation specifically includes: After rain in spring, select one- or two-year-old branches that are healthy, without pests and diseases, about 0.5 - 2 cm in diameter and 0.5 - 1.5 m in length on the mother plant, bend the branches and press them into the soil at the layering planting position to a depth of 10 - 15 cm, cover and compact the sandy soil, and then use stones to cover the soil surface above the layering to ensure that the branches are fixed in the soil.

[0063] Select multiple longer branches of the first mother plant, the second mother plant or the third mother plant. By layering the mother plant branches at multiple planting positions simultaneously, multiple components of the ramets can be established at one time; alternatively, the branches of the first-generation shrub, the second-generation shrub or the third-generation shrub can be selected for the layering step generation by generation. In engineering practice, the above two methods can be used concurrently to accelerate the formation of multiple ramets and shrub clusters.

[0064] In some embodiments, the width of the polygonal live sand barrier sand-blocking belt is 6 to 50 m.

[0065] In some embodiments, the width of the triangular live sand barrier sand-fixing belt is 20 to 100 m.

[0066] In some embodiments, the width of the square-shaped live sand barrier sand-fixing belt is 20 to 100 m.

[0067] In some embodiments, blank belts are provided between adjacent strips in the polygonal live sand barrier sand-blocking belt, the triangular live sand barrier sand-fixing belt and the square-shaped live sand barrier sand-fixing belt, and the width of the blank belt is 10 to 50 m.

[0068] In the present invention, compared with the triangular live sand barrier sand fixation belt, the square grid live sand barrier sand fixation belt has a larger grid chamber space, and thus has a larger sand accumulation area and capacity, and can fix more sand and wind flows. Additionally, in the square grid live sand barrier sand fixation belt, since the angle between the side of each square and the main wind direction is larger than the corresponding value of the triangle, the turbulent flow angle of the air flow along each side is larger, and then the frictional effect is stronger, and the wind resistance and sand fixation effects are stronger. Therefore, along the main wind direction, from the triangular live sand barrier sand fixation belt to the square grid live sand barrier sand fixation belt, the sand fixation and wind resistance efficiencies increase in sequence. When the sand and wind flow passes through the triangular live sand barrier sand blocking belt, part of the sand and wind flow will pass through the sand blocking belt. This part of the sand and wind flow is first intercepted and fixed by the triangular live sand barrier sand fixation belt, and then a small amount of sand grains that are missed are finally captured and fixed by the square grid live sand barrier sand fixation belt in the downwind direction. The entire system can achieve the effect of intercepting and fixing most of the sand and wind flows.

[0069] Example 1 Please refer to Figures 2 - 5 , a sand prevention system of a grid chamber live sand barrier with a dome structure provided in this embodiment includes a triangular live sand barrier sand blocking belt 4, a triangular live sand barrier sand fixation belt 5, and a square grid live sand barrier sand fixation belt 6 arranged in sequence along the main wind direction. The triangular live sand barrier sand blocking belt 4, the triangular live sand barrier sand fixation belt 5, and the square grid live sand barrier sand fixation belt 6 are all arranged in a strip shape and are parallel to each other, and each strip is perpendicular to the main wind direction.

[0070] As Figure 2 and 3 shown, the triangular live sand barrier sand blocking belt 4 includes a plurality of triangular live sand barriers. The triangular live sand barrier includes a plurality of first mother plants 11 and a plurality of first branch plants 12. The first mother plants 11 are arranged in a triangular layout on the ground, and each first mother plant 11 is respectively arranged at a corresponding vertex of the triangle. And at least one first branch plant 12 is arranged on each side of the triangle. At least one first branch plant 12 is formed by layering and propagating the branches of the corresponding first mother plant 11. One vertex of each triangle is aligned with the main wind direction. The branches distributed oppositely on the plurality of first mother plants 11 or the plurality of first branch plants 12 in each triangular live sand barrier are connected to form an arc-shaped multi-layer dome structure. The branches distributed oppositely on the plurality of first mother plants 11 or the plurality of first branch plants 12 between adjacent triangular live sand barriers are connected to form an arc-shaped multi-layer dome structure distributed along the height direction. Because the lengths of the branches of the first mother plants 11 and the first branch plants 12 are different, the domes formed by enclosing and tying these branches are multi-layer structures, that is, domes 3 can be formed at different height levels.

[0071] The multiple triangular live sand barriers are divided into multiple groups. The triangular live sand barriers in each group are distributed on a first strip 10 and are arranged at intervals in sequence along the extending direction of the first strip 10. The extending direction of the first strip 10 is perpendicular to the main wind direction. The multiple first strips 10 are arranged parallel to each other, and the multiple first strips 10 are connected to each other to form a grid structure, forming a triangular live sand barrier sand retention belt 4.

[0072] Specifically, the spacing between two adjacent first mother plants 11 is 2 - 5 m. After growing for 2 - 3 years, the height of the first plant 11 is 2 - 3 m, and the crown width is 2 - 4 m. The spacing between two adjacent first planting points 21 is 2 - 5 m. The number of strips of the first strip 10 is 3 - 10 rows, and the width of the first strip is 1.7 - 4.3 m. The first plant 1 includes Salix psammophila and Caragana korshinskii planted by seedlings or cuttings.

[0073] As Figure 5 shown, the first ramet 12 includes a first-generation layering 121, a first-generation shrub 122, a second-generation layering 123, a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The first ramet 12 is planted at the layering planting position 22. The first-generation layering 121 is planted at the first-generation layering planting position 23, and the branches extend around to form a first-generation shrub 122. The second-generation layering 123 is planted at the second-generation layering planting position 24, and the branches extend around to form a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The first-generation layering planting position 23 and the second-generation layering planting position 24 are both located on each side of the triangle. The spacing between adjacent layering planting positions is 0.5 - 1 m.

[0074] As Figure 2 shown, the triangular live sand barrier sand fixation belt 5 includes multiple triangular live sand barriers. As Figure 3 shown, the triangular live sand barrier includes three second mother plants 11 and multiple second ramets 12. The second mother plants 11 are planted at the second planting points. The three second mother plants 11 are arranged in a triangular layout on the ground. Each second mother plant 11 is respectively arranged at a corresponding vertex of the triangle, and at least one second ramet 12 is arranged on each side of the triangle. At least one second ramet 12 is formed by layering propagation of the branches of the corresponding second mother plant 12. One vertex of each triangle is aligned with the main wind direction.

[0075] Specifically, multiple triangular live sand barriers are arranged at intervals and are arranged in a triangular pattern on the ground along the main wind direction. Multiple triangular live sand barriers form a high vertical grid structure. On the basis of this grid, branches distributed oppositely on three second mother plants 11 or multiple second daughter plants 12 in each triangular live sand barrier are connected to form an arc-shaped multi-layer dome structure. Branches distributed oppositely on multiple second mother plants 11 or multiple second daughter plants 12 in each adjacent triangular live sand barrier are connected to form an arc-shaped multi-layer dome structure 3 distributed along the height direction.

[0076] Multiple triangular live sand barriers are divided into multiple groups. The triangular live sand barriers in each group are distributed on a second strip 13 and are arranged at intervals in sequence along the extension direction of the second strip 13. The extension direction of the second strip 13 is perpendicular to the main wind direction. Multiple second strips 13 are arranged parallel to each other. The number of second strips is 3 - 10 rows, and the width of the second strip is 1.7 - 4.3 m. The distance between the vertices of adjacent triangular live sand barriers is 1 - 2.5 m.

[0077] Specifically, the second mother plant 11 includes Salix psammophila planted by seedlings or cuttings. The spacing between the second mother plants 11 is 2 - 5 m. After growing for 2 - 3 years, the height of the second mother plant 11 is 2 - 3 m, and the crown width is 2 - 4 m. The spacing between adjacent second planting points 21 is 2 - 5 m.

[0078] As Figure 5 shown, the second daughter plant 12 includes a first-generation layering 121, a first-generation shrub 122, a second-generation layering 123, a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The second daughter plant 12 is planted at the layering planting position 22. The first-generation layering 121 is planted at the first-generation layering planting position 23, and the branches extend around to form a first-generation shrub 122. The second-generation layering 123 is planted at the second-generation layering planting position 24, and the branches extend around to form a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The first-generation layering planting position 23 and the second-generation layering planting position 24 are both located on each side of the triangle. The spacing between adjacent layering planting positions is 0.5 - 1 m.

[0079] As Figure 2 shown, the sand fixation belt 6 of the square live sand barrier includes multiple square live sand barriers. As Figure 4 shown, the square live sand barrier includes three third mother plants 11 and multiple third daughter plants 12. The third mother plants 11 are planted at the third planting points 21. The three third mother plants 11 are arranged in a square pattern on the ground. Each third mother plant 11 is respectively arranged at a corresponding vertex of the square, and at least one third daughter plant 12 is arranged on each side of the quadrilateral. At least one third daughter plant 12 is formed by layering propagation of the branches of the corresponding third mother plant 11. One vertex of each quadrilateral is aligned with the main wind direction.

[0080] Specifically, the multiple square-shaped live sand barriers are arranged at intervals and are arranged in a triangular shape on the ground along the main wind direction. The multiple square-shaped live sand barriers form a high-standing grid structure with a square bottom surface. On the basis of this grid, the branches distributed oppositely on four third mother plants 11 or multiple third daughter plants 12 in each square-shaped live sand barrier are connected to form an arc-shaped multi-layer dome structure 3. On multiple third mother plants 11 or multiple third daughter plants 12 with opposite distribution in each adjacent square-shaped live sand barrier, the branches are connected to form an arc-shaped multi-layer dome structure 3 distributed along the height direction.

[0081] The multiple square-shaped live sand barriers are divided into multiple groups. The square-shaped live sand barriers in each group are distributed on a third strip 14 and are arranged at intervals in sequence along the extension direction of the third strip 14. The extension direction of the third strip 14 is perpendicular to the main wind direction, and the multiple third strips 14 are arranged parallel to each other. The number of the third strips is 3 - 10 rows, and the width of the third strip is 2.8 - 7.1 m. The distance between the vertices of adjacent square-shaped live sand barriers is 1 - 2.5 m.

[0082] Specifically, the third mother plant 11 includes Salix psammophila planted by seedlings or cuttings. The spacing between the third mother plants 11 is 2 - 5 m. After growing for 2 - 3 years, the height of the third mother plant 11 is 2 - 3 m, and the crown width is 2 - 4 m. The distance between adjacent third planting points 21 is 2 - 5 m.

[0083] As Figure 5 shown, the third daughter plant 12 includes a first-generation layering 121, a first-generation shrub 122, a second-generation layering 123, a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The third daughter plant 12 is planted at the layering planting position 22. The first-generation layering 121 is planted at the first-generation layering planting position 23, and the branches spread out to form a first-generation shrub 122. The second-generation layering 123 is planted at the second-generation layering planting position 24, and the branches spread out to form a second-generation shrub 124, and the next-generation layering 125 germinated on the layering. The first-generation layering planting position 23 and the second-generation layering planting position 24 are both located on each side of the square. The distance between adjacent layering planting positions is 0.5 - 1 m.

[0084] The width of the sand-blocking belt 4 of the triangular live sand barrier is 6 - 50 m; the width of the sand-fixing belt 5 of the triangular live sand barrier is 20 - 100 m; the width of the sand-fixing belt 6 of the square-shaped live sand barrier is 20 - 100 m. A blank belt is provided between adjacent strips in the sand-blocking belt 4 of the triangular live sand barrier, the sand-fixing belt 5 of the triangular live sand barrier, and the sand-fixing belt 6 of the square-shaped live sand barrier, and the width of the blank belt is 10 - 50 m.

[0085] In this embodiment, the top of the triangular live sand barrier sand - blocking belt 4 has a multi - layer dome with an arc shape. The side barrier is composed of branch shrubs propagated from the tillers of the mother plants. Integrating the structures and functions of mechanical sand barriers and plant sand barriers, it can expand the original sand barrier pattern around through layering propagation, achieving long - term wind - blocking and sand - fixation. The later it is, the larger the scale and the more complex the layers of the dome and the side barrier are, and the better the protection effect is. The triangular live sand barrier sand - blocking belt 4 intercepts the flowing sand from the upwind direction. A small amount of the leaking flowing sand is successively fixed layer by layer by the triangular live sand barrier sand - fixation belt 5 and the square - shaped live sand barrier sand - fixation belt 6 in the downwind direction. The three cooperate with each other. The sand - blocking belt 4 inhibits the wind force through the multi - layer blocking of the dome and the side barrier, and the sand - fixation belts 5 and 6 reduce the wind force through the flow - disturbing friction of the dome and the side barrier. Moreover, from the triangular live sand barrier sand - fixation belt 5 to the square - shaped live sand barrier sand - fixation belt 6, the sand - fixation and wind - blocking efficiency increases successively. Therefore, the entire system can block and fix most of the sand - wind flow.

[0086] In the triangular live sand barrier sand - fixation belt 5 and the square - shaped live sand barrier sand - fixation belt 6, at least one vertex of each triangle or square is set towards the main wind direction. When the air flow enters the live sand barrier, it first impacts the mother plant 11 and then diverges obliquely backward, and then frictions and flows along the edge of the barrier formed by the ramets 12. After impacting the mother plant 11 in the downwind direction, it is diverted again, and the above process is repeated. The energy of the air flow 81 that has been diverted multiple times will be greatly weakened. The sedimentation effect in the sand - fixation belt is strong, and it can effectively protect the protected object 7.

[0087] Moreover, compared with the triangular live sand barrier sand - fixation belt 5, the square - shaped live sand barrier sand - fixation belt 6 has a larger grid space, so it has a larger sand - accumulating area and capacity, and can fix more sand - wind flow. In addition, in the square - shaped live sand barrier sand - fixation belt 6, since the angle between the side of each square and the main wind direction is larger than the corresponding value of the triangle, the flow - disturbing angle of the air flow along each side is larger, and then the friction effect is stronger, and the wind - blocking and sand - fixation effects are stronger. Therefore, along the main wind direction, from the triangular live sand barrier sand - fixation belt 5 to the square - shaped live sand barrier sand - fixation belt 6, the sand - fixation and wind - blocking efficiency increases successively.

[0088] The grid - type live sand barrier sand - prevention system in this embodiment combines the structures and functions of plant sand barriers and mechanical sand barriers. It can expand the original sand barrier pattern around through layering propagation, achieving long - term wind - blocking and sand - fixation. And the ramets produced by layering propagation fill the near - surface blank area between the plant shrubs. It has strong wind - blocking and sand - storage functions and has good sustainable biological treatment effects.

[0089] It should be understood that the above - mentioned embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A cell active sand barrier sand control system with a dome structure, characterized in that: It includes polygonal active sand barrier sand-blocking belts, triangular active sand barrier sand-fixing belts and grid-shaped active sand barrier sand-fixing belts arranged in sequence along the main wind direction, wherein the polygonal active sand barrier sand-blocking belts, triangular active sand barrier sand-fixing belts and grid-shaped active sand barrier sand-fixing belts are all arranged in strips and are parallel to each other, and each strip extends in a direction perpendicular to the main wind direction; The polygonal active sand barrier sand-blocking belt comprises a plurality of polygonal active sand barriers, the polygonal active sand barriers comprise a plurality of first mother plants and a plurality of first ramets, the first mother plants are arranged in a polygonal pattern on the ground, each first mother plant is respectively arranged on a corresponding vertex of the polygon, and at least one first ramet is arranged on each side of the polygon, at least one first ramet is formed by layering of branches of a corresponding first mother plant, a vertex of each of the polygons is arranged to face the main wind direction, and branches on the plurality of first mother plants or the plurality of first ramets in each polygonal active sand barrier that are distributed in opposite directions are connected to each other to form an arc-shaped multi-layer dome structure; The triangular active sand barrier and sand-fixing belt comprises a plurality of triangular active sand barriers, the triangular active sand barriers comprise three second mother plants and a plurality of second ramets, the three second mother plants are arranged in a triangular pattern on the ground, each second mother plant is respectively arranged on a corresponding vertex of the triangle, and at least one second ramet is arranged on each side of the triangle, at least one second ramet is formed by layering the branches of the corresponding second mother plant, one vertex of each of the triangles is arranged to face the main wind direction, and branches on the three second mother plants or the plurality of second ramets in each triangular active sand barrier that are distributed in opposite directions are connected to each other to form an arc-shaped multi-layer dome structure; The grid-shaped live sand barrier sand-fixing belt includes multiple grid-shaped live sand barriers, and the grid-shaped live sand barrier includes four third mother plants and multiple third ramets. The four third mother plants are arranged in a quadrilateral on the ground, and each third mother plant is respectively arranged on a corresponding vertex of the quadrilateral, and at least one third ramet is arranged on each side of the quadrilateral, and at least one third ramet is formed by layering branches of a corresponding third mother plant. One vertex of each of the quadrilaterals is arranged to align with the main wind direction, and the branches distributed in opposite directions on the four third mother plants or multiple third ramets in each grid-shaped live sand barrier are connected to each other to form an arc-shaped multi-layer dome structure.

2. The cell active sand barrier sand control system with a dome structure according to claim 1, characterized in that: The first mother plant is a sand-dwelling shrub with a height of 2-3m and a crown width of 2-4m; preferably, the sand-dwelling shrub includes Salix psammophila or Caragana korshinskii; And / or, each of the first mother plants is planted at a first planting point, and the distance between adjacent first planting points is 2-5m; And / or, branches distributed in opposite directions on a plurality of first mother plants or a plurality of first ramets in each adjacent polygonal active sand barrier are connected to each other to form a multi-layer dome structure in an arc shape distributed in the height direction; And / or, the polygonal active sand barrier also includes a plurality of first ramets, at least one first ramet is distributed between any two adjacent first mother plants, and at least one first ramet is formed by layering of branches of a corresponding first mother plant; And / or, the plurality of polygonal active sand barriers are divided into a plurality of groups, the polygonal active sand barriers in each group are distributed on a first strip and are sequentially arranged at intervals along the extension direction of the first strip, the extension direction of the first strip is perpendicular to the main wind direction, the plurality of the first strips are arranged parallel to each other, and the plurality of the first strips are interconnected to form a grid structure; And / or, the polygonal active sand barrier includes 3-10 first strips, and the width of the first strip is 1.7-4.3m.

3. The cell active sand barrier sand control system with a dome structure according to claim 2 is characterized by: The polygon includes a triangle or a square; And / or, at least one of the first ramets includes a first-generation layering and branches sprouted from the first-generation layering or a plant formed by the first-generation layering, and at least one of the first ramets includes a later-generation layering and branches sprouted from the later-generation layering or a plant formed by the later-generation layering, the later-generation layering includes a second-generation layering, ..., or an n-generation layering, the first-generation layering is a branch of the first mother plant, the second-generation layering is a branch of the first ramet formed by the first-generation layering, and so on, the n-generation layering is a branch of the first ramet formed by the (n-1)-generation layering, n≥2; And / or, each side of the polygonal active sand barrier is formed by a bush and branches of a first mother plant, and the bush is composed of first ramets; And / or, each first mother plant in the polygonal live sand barrier is planted in a corresponding mother plant planting hole; And / or, a plurality of layering planting positions are arranged at intervals on the line between any two first mother plants in each of the polygonal live sand barriers, and the spacing between adjacent layering planting positions is 0.5-1m; And / or, the spacing between the first mother plants in the same polygonal live sand barrier is 2-5m.

4. The cell active sand barrier sand control system with a dome structure according to claim 1, characterized in that: The second mother plant includes Salix psammophila or Caragana korshinskii, and has a height of 2-3m and a crown width of 2-4m; and / or, each of the second mother plants is planted at a second planting point, and the distance between adjacent second planting points is 2-5 m; And / or, a plurality of the triangular active sand barriers form a high vertical grid structure with a triangular bottom surface; And / or, a plurality of the triangular active sand barriers are arranged at intervals from each other and arranged in a herringbone shape on the ground along the main wind direction; And / or, branches distributed in opposite directions on a plurality of second mother plants or a plurality of second ramets in each adjacent triangular active sand barrier are connected to each other to form a multi-layer dome structure in an arc shape distributed in the height direction; And / or, the triangular active sand barrier and sand fixation belt further comprises a plurality of second ramets, at least one second ramet is distributed between any two adjacent second mother plants in the same triangular active sand barrier, and at least one of the second ramets is formed by layering of branches of a corresponding second mother plant; And / or, at least one of the second ramets includes a first-generation layering and branches sprouted from the first-generation layering or a plant formed by the first-generation layering, and at least one of the second ramets includes a later generation layering and branches sprouted from the later generation layering or a plant formed by the later generation layering, the later generation layering includes a second generation layering, ..., or an n-generation layering, the first-generation layering is a branch of the second mother plant, the second-generation layering is a branch of the second ramet formed by the first-generation layering, and so on, the n-generation layering is a branch of the second ramet formed by the (n-1)-generation layering, n≥2; And / or, each side of the triangular active sand barrier is formed by a bush and branches of a second mother plant, and the bush is composed of second ramets; And / or, each second mother plant in the triangular active sand barrier is planted in a corresponding mother plant planting hole; And / or, a plurality of layering planting positions are arranged at intervals on the line between any two second mother plants in each of the triangular live sand barriers, and the spacing between adjacent layering planting positions is 0.5-1m.

5. The cell active sand barrier sand control system with a dome structure according to claim 4 is characterized by: The shortest distance between adjacent triangular active sand barriers is 1-2.5m; and / or, the spacing between the second mother plants in the same triangular live sand barrier is 2-5m; And / or, the plurality of triangular active sand barriers are divided into a plurality of groups, the triangular active sand barriers in each group are distributed on a second strip and are arranged in sequence at intervals along the extension direction of the second strip, the extension direction of the second strip is perpendicular to the main wind direction, and the plurality of second strips are arranged parallel to each other.

6. The cell active sand barrier sand control system with a dome structure according to claim 5, characterized in that: The triangular active sand barrier and sand fixation belt includes 3-10 second strips, each second strip has a width of 1.7-4.3 m, the second strips are arranged at intervals, and the spacing between adjacent second strips is 1-2.5 m.

7. The cell active sand barrier sand control system with a dome structure according to claim 1, characterized in that: The third mother plant includes Salix psammophila or Caragana korshinskii, and has a height of 2-3m and a crown width of 2-4m; And / or, each of the third mother plants is planted at a third planting point, and the distance between adjacent third planting points is 2-5m; And / or, branches distributed in opposite directions on a plurality of third mother plants or a plurality of third ramets in each adjacent grid-shaped active sand barrier are connected to each other to form a multi-layer dome structure in an arc shape distributed in the height direction; And / or, a plurality of the grid-shaped active sand barriers are arranged at intervals from each other and arranged in a herringbone shape on the ground along the main wind direction; And / or, the grid-shaped active sand barrier and sand-fixing belt further comprises a plurality of third ramets, at least one third ramet is distributed between any two adjacent third mother plants in the same grid-shaped active sand barrier, and at least one third ramet is formed by layering of branches of a corresponding third mother plant; And / or, at least one of the third ramets includes a first-generation layering and branches sprouted from the first-generation layering or a plant formed by the first-generation layering, and at least one of the third ramets includes a later generation layering and branches sprouted from the later generation layering or a plant formed by the later generation layering, the later generation layering includes a second-generation layering, ..., or an n-generation layering, the first-generation layering is a branch of the third mother plant, the second-generation layering is a branch of the third ramet formed by the first-generation layering, and so on, the n-generation layering is a branch of the third ramet formed by the (n-1)-generation layering, n≥2; And / or, each side of the grid-shaped live sand barrier is formed by a bush and branches of a third mother plant, and the bush is composed of third ramets; And / or, each third mother plant in the grid-shaped live sand barrier is planted in a corresponding mother plant planting hole; And / or, a plurality of layering planting positions are arranged at intervals on the line between any two third mother plants in each of the grid-shaped live sand barriers, and the spacing between adjacent layering planting positions is 0.5-1m.

8. The cell active sand barrier sand control system with a dome structure according to claim 7, characterized in that: The shortest distance between adjacent grid-shaped active sand barriers is 1-2.5m; and / or, the spacing between the third mother trees in the same said grid-shaped live sand barrier is 2-5m; And / or, the plurality of said checkered active sand barriers are divided into a plurality of groups, the checkered active sand barriers in each group are distributed on a third strip and are sequentially arranged at intervals along the extension direction of the third strip, the extension direction of the third strip is perpendicular to the main wind direction, and the plurality of said third strips are arranged parallel to each other; And / or, the grid-shaped active sand barrier sand-fixing belt includes 3-10 third strips, each third strip has a width of 2.8-7.1 m, the third strips are arranged at intervals, and the spacing between adjacent third strips is 1-2.5 m.

9. The cell active sand barrier sand control system with a dome structure according to claim 1, characterized in that: The layering propagation operation method comprises: selecting healthy branches without diseases and insect pests on the first mother plant, the second mother plant or the third mother plant; pressing the branches into the soil of the planting location, covering and compacting the soil, and fixing the branches; Preferably, the branch has a diameter of 0.5-2 cm, a length of 0.5-1.5 m, and is pressed into the soil at the planting location to a depth of 10-15 cm.

10. The cell active sand barrier sand control system with a dome structure according to claim 1, characterized in that: The width of the polygonal active sand barrier is 6-50m; And / or, the width of the triangular active sand barrier sand fixation belt is 20-100m; And / or, the width of the grid-type active sand barrier sand fixation belt is 20-100m; And / or, blank strips are provided between adjacent strips in the polygonal active sand barrier sand-blocking belt, the triangular active sand barrier sand-fixing belt and the grid-shaped active sand barrier sand-fixing belt, and the width of the blank strip is 10-50m.

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