Slope restoration device and method for desertification control

Abstract

Provided in the present application are a slope restoration device and method for desertification control. The slope restoration device is arranged on a slope and comprises a sand barrier assembly and a water collection and soil moisture conservation assembly, wherein the sand barrier assembly is configured to reduce wind speed and intercept wind-blown sand, and can reduce the runoff velocity and reduce water and soil loss on the slope surface during rainfall; and the water collection and soil moisture conservation assembly is configured to store rainwater, and under the action of light, water in the water collection and soil moisture conservation assembly transpires upwards, thereby increasing the humidity of the slope and promoting vegetation coverage and greening on the slope. The present application is suitable for ecological restoration of sandy slopes in arid and water-scarce regions, can effectively collect rainwater, especially rainstorm runoff, has significant effects on soil and water conservation and on reducing runoff erosion, can also intercept wind-blown sand to provide conditions for vegetation restoration, and can improve the survival rate in vegetation restoration. The present application uses degradable main materials and is more environmentally friendly, and can be mass produced, featuring high promotion potential and involving simple construction. The present application can be popularized and applied to almost-flat semi-fixed and fixed sandy lands by means of surface microtopographic modification.

Description

A slope restoration device and method for desertification control

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411039465.8, filed on July 31, 2024, entitled "A Slope Repair Device and Method for Desertification Control", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the fields of desertification control, soil and water conservation, and afforestation, and in particular to a slope restoration device and method for desertification control. Background Technology

[0004] Desertification poses an increasingly serious threat to the Earth and humanity. In recent years, desertification has become one of the most important and urgent environmental problems to be solved globally.

[0005] In existing technologies, ecological restoration technology that combines engineering and biological measures is a key technology for desertification control, and the survival of vegetation is crucial to the effectiveness of the control.

[0006] The survival of vegetation depends mainly on the water obtained in the early stage of cultivation. Once the vegetation takes root and sprouts, it has strong drought resistance. Therefore, the key to ensuring the survival rate of vegetation lies in the water obtained in the early stage of vegetation cultivation.

[0007] In desertification control, the efficient use of water resources and the reduction of wind speed and the blocking of sandstorms are the core and difficult points of vegetation restoration in desertified areas.

[0008] Therefore, it is necessary to design a slope restoration device and method for desertification control, which can be used for soil and water conservation and sand fixation and greening of slopes in desertified areas. Summary of the Invention

[0009] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a slope restoration device and method for desertification control, which can effectively collect water resources, slow down water loss, improve the utilization rate of natural precipitation in arid areas, improve the effectiveness of vegetation restoration, and solve the problems of serious water loss and poor vegetation survival on desertified slopes in the prior art.

[0010] To achieve the above and other related objectives, this application provides a slope restoration device for desertification control, which is installed on a slope; it includes a sand barrier component and a water collection and moisture retention component. The sand barrier component is used to reduce wind speed and block windblown sand, and can reduce runoff velocity during rainfall, thereby reducing soil and water loss on the slope surface; the water collection and moisture retention component is used to store rainwater, and under the action of sunlight, the water in the water collection and moisture retention component evaporates upward, increasing the humidity of the slope.

[0011] Optionally, the water collection and moisture retention component includes a frame, an outer layer, and a seepage-proof mat. The outer layer wraps around the outer peripheral surface of the frame, and the frame and the outer layer form a spiral tube. The seepage-proof mat is disposed on the lower side of the frame.

[0012] Optionally, the skeleton is made of high-carbon spiral steel wire.

[0013] Optionally, the outer cladding layer is made of geotextile; the geotextile used in the outer cladding layer is a biodegradable, natural, and environmentally friendly geotextile.

[0014] Optionally, the waterproofing pad includes a double layer of fabric and water-repellent powder, with the water-repellent powder filling the space between the double layers of fabric.

[0015] Optionally, the sand barrier component is a living sand barrier, the water collection and moisture retention component is buried on the slope, and the living sand barrier is laid on the upper side of the water collection and moisture retention component.

[0016] Optionally, the sand barrier component combines mechanical sand barriers with seeded / cutting drought-resistant vegetation. The water collection and moisture retention component is buried on the slope, the mechanical sand barrier is set on the downstream side of the water collection and moisture retention component, and the seeded / cutting drought-resistant vegetation is buried on the upper side of the water collection and moisture retention component.

[0017] To achieve the above or other objectives, this application also discloses a slope restoration method for desertification control, employing the aforementioned slope restoration device for desertification control, wherein the sand barrier component is a living sand barrier; the steps are as follows:

[0018] S1: Dig trenches along lines parallel to the slope contour lines and bury water collection and moisture retention components;

[0019] S2: Backfill a small amount of undisturbed sand on top of the water collection and moisture retention components, and lay a living sand barrier in the small amount of undisturbed sand. The living sand barrier reduces wind speed and blocks windblown sand on the one hand; on the other hand, it can reduce runoff velocity and reduce soil erosion on the slope during rainfall.

[0020] S3: During rainfall, the water collection and moisture retention components store rainwater; after rain, under the influence of sunlight, the water in the water collection and moisture retention components evaporates upwards, increasing the humidity of the living sand barrier area and improving the survival rate of the living sand barrier.

[0021] To achieve the above or other objectives, this application also discloses a slope restoration method for desertification control, employing the aforementioned slope restoration device for desertification control, wherein the sand barrier component combines mechanical sand barriers with seeding / cutting of drought-resistant vegetation; the steps are as follows:

[0022] A1: Lay mechanical sand barriers along the contour lines of the slope; on the one hand, mechanical sand barriers reduce wind speed and block windblown sand; on the other hand, they can reduce runoff velocity and reduce soil erosion on the slope during rainfall.

[0023] A2: Install water collection and moisture retention components on the upstream side of the mechanical sand barrier;

[0024] A3: Backfill a small amount of undisturbed sand on top of the water collection and moisture retention components, and sow / cut into drought-resistant vegetation in the small amount of undisturbed sand.

[0025] A4: During rainfall, the water collection and moisture retention components store rainwater; after rain, under the influence of sunlight, the water in the water collection and moisture retention components evaporates upwards, increasing the humidity in the drought-resistant vegetation area and promoting the rooting and survival of drought-resistant vegetation.

[0026] Optionally, the water collection and moisture retention components in step A2 can be installed by trenching along the contour lines of the slope or by puncture along the contour lines of the slope.

[0027] As described above, the slope restoration device and method for desertification control involved in this application have the following beneficial effects:

[0028] 1. The slope restoration device and method involved in this application for desertification control are applicable to the ecological restoration of sandy slopes in arid and water-scarce areas.

[0029] 2. The slope restoration device and method for desertification control involved in this application can effectively collect rainwater, especially storm runoff.

[0030] 3. The slope restoration device and method involved in this application for desertification control have significant effects on soil and water conservation and reducing runoff erosion; at the same time, they can block wind and sand, providing conditions for vegetation restoration.

[0031] 4. The slope restoration device and method involved in this application for desertification control can improve the survival rate of vegetation restoration.

[0032] 5. The slope restoration device and method for desertification control involved in this application are made of biodegradable materials and are highly environmentally friendly.

[0033] 6. The slope restoration device and method for desertification control involved in this application can be mass-produced, has high scalability, and is easy to construct.

[0034] 7. The slope restoration device and method involved in this application for desertification control can be widely applied to gentle semi-fixed and fixed sandy lands through surface topography micro-shaping. Attached Figure Description

[0035] Figure 1 is a plan view of this application; (the sand barrier component uses a living sand barrier).

[0036] Figure 2 is a cross-sectional view of Figure 1;

[0037] Figure 3 is a plan view of this application; (the sand barrier components adopt mechanical sand barriers and drought-resistant vegetation sown / cutting).

[0038] Figure 4 is a cross-sectional view of Figure 3;

[0039] Figure 5 is a schematic diagram of the slope restoration device for desertification control involved in this application during use; (the sand barrier component adopts mechanical sand barriers and drought-resistant vegetation sown / cutting).

[0040] Figure 6 is a schematic diagram of the water collection and moisture retention component in this application;

[0041] Figure 7 is a schematic diagram of the seepage-proof pad in the water collection and moisture retention component of this application.

[0042] Explanation of reference numerals in the attached diagram: 1. Water collection and moisture retention component; 101. Frame; 102. Outer layer; 103. Impermeable mat; 1031. Double-layer cloth; 1032. Water-repellent powder; 2. Living sand barrier; 3. Mechanical sand barrier; 4. Slope contour line; 5. Slope; 6. Drought-resistant vegetation. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0044] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application's implementation.

[0045] As shown in Figures 1-7, this application provides a slope restoration device for desertification control, which is installed on slope 5; it includes a sand barrier component and a water collection and moisture retention component 1. The sand barrier component is used to reduce wind speed and block windblown sand, and can reduce runoff velocity during rainfall, thereby reducing soil and water loss on the slope 5. The water collection and moisture retention component 1 is used to store rainwater, and under the action of sunlight, the water in the water collection and moisture retention component 1 evaporates upward, increasing the humidity of slope 5.

[0046] Optionally, as shown in Figures 5-7, the water collection and moisture retention component 1 includes a frame 101, an outer layer 102, and a seepage-proof pad 103. The outer layer 102 wraps around the outer peripheral surface of the frame 101, and the frame 101 and the outer layer 102 form a spiral tube. The seepage-proof pad 103 is disposed on the lower side of the frame 101. In this embodiment, the outer layer 102 wraps around the outer peripheral surface of the frame 101 at 360°, and the seepage-proof pad 103 is disposed on the lower side of the frame 101 at 180°. The height of the seepage-proof pad 103 is not less than the radius of the frame 101, that is, the water storage height of the water collection and moisture retention component 1 is at least equal to the radius height of the frame 101.

[0047] Optionally, in this embodiment, the skeleton 101 is made of high-carbon spiral steel wire. Furthermore, the skeleton 101 is treated with phosphate for rust prevention and primarily bears the pressure of the upper backfill soil.

[0048] Optionally, in this embodiment, the outer layer 102 is made of geotextile. Furthermore, the geotextile used in the outer layer 102 is a biodegradable, natural, and environmentally friendly geotextile. Once the living sand barrier 2 or drought-resistant vegetation 6 germinates and takes root on the slope 5, its dependence on the water collection and moisture retention component 1 will gradually decrease, and the geotextile will gradually decompose, resulting in good environmental performance.

[0049] Optionally, as shown in Figures 6-7, in this embodiment, the impermeable mat 103 includes a double-layer fabric 1031 and a water-repellent powder 1032, with the water-repellent powder 1032 filling the spaces between the double-layer fabric 1031. Furthermore, the double-layer fabric 1031 is also made of biodegradable, natural, and environmentally friendly geotextile.

[0050] Optionally, as shown in Figures 1 and 2, the sand barrier component adopts a living sand barrier 2, the water collection and moisture retention component 1 is buried on the slope 5, and the living sand barrier 2 is laid on the upper side of the water collection and moisture retention component 1. In this embodiment, the living sand barrier 2 is a plant branch that has the potential to sprout and survive.

[0051] Optionally, as shown in Figures 3, 4, and 5, the sand barrier component combines a mechanical sand barrier 3 and drought-resistant vegetation (sown / cutted) 6. The water collection and moisture retention component 1 is buried on the slope 5, the mechanical sand barrier 3 is positioned downstream of the water collection and moisture retention component 1, and the drought-resistant vegetation 6 (sown / cutted) is buried above the water collection and moisture retention component 1. In this embodiment, the mechanical sand barrier 3 is a sand barrier that does not have the potential to germinate and survive. There are many types of mechanical sand barriers 3, such as branch sand barriers and straw sand barriers.

[0052] To achieve the above or other objectives, this application also discloses a slope restoration method for desertification control, employing the aforementioned slope restoration device for desertification control, wherein the sand barrier component is a living sand barrier 2; as shown in Figures 1-2, the steps are as follows:

[0053] S1: Ditch along the parallel line of contour line 4 on the slope and bury water collection and moisture retention component 1. Water collection and moisture retention component 1 is strip-shaped.

[0054] S2: Backfill a small amount of undisturbed sand on top of the water collection and moisture retention component 1, and lay a living sand barrier 2 in the small amount of undisturbed sand. The living sand barrier 2 reduces wind speed and blocks wind and sand. On the other hand, it can reduce runoff velocity and reduce soil erosion on the slope during rainfall.

[0055] S3: As shown in Figure 2, during rainfall, rainwater will flow along the runoff direction of slope 5. At this time, the living sand barrier 2 laid on the upper side of the water collection and moisture retention component 1 will block the runoff of rainwater to prevent high-velocity rainwater from impacting slope 5 and causing water erosion of slope 5. At the same time, the living sand barrier 2 will block the rainwater and allow it to enter the water collection and moisture retention component 1. The rainwater will seep from the outer layer 102 into the frame 101, and then be blocked by the seepage prevention pad 103 and stored on the seepage prevention pad 103. The water collection and moisture retention component 1 plays the role of a water interception ditch during rainfall.

[0056] S4: When sunlight is present, the moisture stored in the seepage-proof mat 103 evaporates upwards as the temperature rises, increasing the humidity in the root area of ​​the living sand barrier 2, which has a good moisture retention effect, thereby improving the survival rate of the living sand barrier 2.

[0057] S5: After the living sand barrier 2 takes root and sprouts, the living sand barrier 2 will gradually reduce its dependence on the water collection and moisture retention component 1; the outer layer 102 and the double-layer cloth 1031 of the outer wrapping layer 102 and the seepage prevention pad 103 wrapped around the skeleton 101 will gradually degrade, which is environmentally friendly.

[0058] To achieve the above or other objectives, this application also discloses a slope restoration method for desertification control, employing the aforementioned slope restoration device for desertification control. The sand barrier component combines a mechanical sand barrier 3 with seeded / cutting drought-resistant vegetation 6; as shown in Figures 3-5, the steps are as follows:

[0059] A1: Lay mechanical sand barriers 3 along the parallel line of contour line 4 on the slope; mechanical sand barriers 3 reduce wind speed and block wind and sand; on the other hand, they can reduce runoff velocity and reduce soil erosion on the slope during rainfall.

[0060] A2: A water collection and moisture retention component 1 is installed on the upstream side (near the top of the slope) of the mechanical sand barrier 3. The installation method of the water collection and moisture retention component 1 includes trenching along the contour line 4 of the slope or spot installation along the contour line 4 of the slope. When the water collection and moisture retention component 1 is laid in a trench, it is in strip shape; when the water collection and moisture retention component 1 is laid in a spot, it is in spherical or block shape.

[0061] A3: Backfill a small amount of undisturbed sand on top of the water collection and moisture retention component 1, and sow / cut into drought-resistant vegetation 6 in the small amount of undisturbed sand.

[0062] A4: As shown in Figures 4 and 5, during rainfall, rainwater will flow along the runoff direction of slope 5. At this time, the mechanical sand barrier 3 laid on the downstream side of the water collection and moisture retention component 1 will block the rainwater, allowing it to enter the water collection and moisture retention component 1. The rainwater will seep from the outer layer 102 into the frame 101, and then be blocked by the seepage prevention pad 103 and stored on the seepage prevention pad 103. The water collection and moisture retention component 1 plays the role of a water interception ditch during rainfall.

[0063] A5: As shown in Figure 5, when sunlight is present, the moisture stored in the seepage-proof pad 103 evaporates upwards along with the increase in temperature, which increases the humidity in the drought-resistant vegetation 6 area and has a good moisture retention effect, thereby improving the survival rate of the drought-resistant vegetation 6.

[0064] A6: After the drought-resistant vegetation 6 takes root and sprouts, the drought-resistant vegetation 6 will gradually reduce its dependence on the water collection and moisture retention component 1; the outer layer 102 and the double-layer cloth 1031 of the outer wrapping layer 102 and the seepage prevention pad 103 wrapped around the frame 101 will gradually degrade, which is environmentally friendly.

[0065] This application relates to a slope restoration device and method for desertification control, applicable to the ecological restoration of sandy slopes in arid and water-scarce areas, as well as soil and water conservation on sandy slopes 5 in arid and semi-arid areas and sand fixation and greening of semi-fixed desert gully slopes. It can collect rainwater during rainfall and, under sunlight, allow the rainwater to evaporate upwards, providing moisture to the living sand barrier 2 or drought-resistant vegetation 6, improving the survival rate of vegetation restoration. This, in turn, achieves soil and water conservation and reduces runoff erosion on the slope 5 through the living sand barrier 2, mechanical sand barrier 3, and drought-resistant vegetation 6. The outer layer 102 and double-layer fabric 1031 of the water-collecting and moisture-retaining component 1 in this application are both made of biodegradable natural and environmentally friendly geotextile, exhibiting strong environmental friendliness. The water-collecting and moisture-retaining component 1 can be mass-produced, has high scalability, and is simple to construct, requiring only micro-plasticization of the surface topography, and can be widely applied to gentle semi-fixed and fixed sandy areas.

[0066] Therefore, this application effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0067] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A slope restoration device for desertification control, installed on a slope (5); characterized in that: The system includes a sand barrier component and a water collection and moisture retention component (1). The sand barrier component is used to reduce wind speed and block wind and sand, and can reduce runoff velocity during rainfall to reduce soil and water loss on the slope (5). The water collection and moisture retention component (1) is used to store rainwater, and under the action of sunlight, the water in the water collection and moisture retention component (1) evaporates upward, increasing the humidity of the slope (5).

2. The slope restoration device for desertification control according to claim 1, characterized in that: The water collection and moisture retention component (1) includes a frame (101), an outer layer (102), and a seepage-proof pad (103). The outer layer (102) is wrapped around the outer peripheral surface of the frame (101), and the frame (101) and the outer layer (102) form a spiral tube. The seepage-proof pad (103) is located on the lower side of the frame (101).

3. The slope restoration device for desertification control according to claim 2, characterized in that: The skeleton (101) is made of high-carbon spiral steel wire.

4. The slope restoration device for desertification control according to claim 2, characterized in that: The outer cladding layer (102) is made of geotextile; the geotextile used in the outer cladding layer (102) is a biodegradable, natural, and environmentally friendly geotextile.

5. The slope restoration device for desertification control according to claim 2, characterized in that: The waterproofing pad (103) includes a double layer of fabric (1031) and water-repellent powder (1032), the water-repellent powder (1032) being filled between the double layer of fabric (1031).

6. The slope restoration device for desertification control according to claim 1, characterized in that: The sand barrier component adopts a living sand barrier (2), the water collection and moisture retention component (1) is buried on the slope (5), and the living sand barrier (2) is laid on the upper side of the water collection and moisture retention component (1).

7. The slope restoration device for desertification control according to claim 1, characterized in that: The sand barrier component combines a mechanical sand barrier (3) and a drought-resistant plant (6) that is sown / cut into the soil. The water collection and moisture retention component (1) is buried on the slope (5). The mechanical sand barrier (3) is set on the downstream side of the water collection and moisture retention component (1), and the drought-resistant plant (6) that is sown / cut into the soil is buried on the upper side of the water collection and moisture retention component (1).

8. A slope restoration method for desertification control, employing the slope restoration device for desertification control as described in any one of claims 1-5, wherein the sand barrier component is a living sand barrier (2); characterized in that: The steps are as follows: S1: Ditch along the parallel line of the slope contour line (4) and bury water collection and moisture retention components (1); S2: Backfill a small amount of undisturbed sand above the water collection and moisture retention component (1), and lay a living sand barrier (2) in the small amount of undisturbed sand. The living sand barrier (2) reduces wind speed and blocks wind and sand. On the other hand, it can reduce runoff velocity, reduce soil erosion on the slope, and increase runoff infiltration during rainfall. S3: During rainfall, the water collection and moisture retention component (1) stores rainwater; after the rain, under the action of sunlight, the water in the water collection and moisture retention component (1) evaporates upward, increasing the humidity of the living sand barrier (2) area and improving the survival rate of the living sand barrier (2).

9. A slope restoration method for desertification control, employing the slope restoration device for desertification control as described in any one of claims 1-5, wherein the sand barrier component combines a mechanical sand barrier (3) and drought-resistant vegetation (6) sown / cutted; characterized in that: The steps are as follows: A1: Lay mechanical sand barriers (3) along the parallel line of the slope contour line (4); the mechanical sand barriers (3) reduce wind speed and block wind and sand; on the other hand, they can reduce runoff velocity, reduce soil erosion on the slope and increase runoff infiltration during rainfall. A2: A water collection and moisture retention component (1) is buried on the upstream side of the mechanical sand barrier (3); A3: Backfill a small amount of undisturbed sand on top of the water collection and moisture retention component (1), and sow / cut into drought-resistant vegetation (6) in the small amount of undisturbed sand; A4: During rainfall, the water collection and moisture retention component (1) stores rainwater; after the rain, under the action of sunlight, the water in the water collection and moisture retention component (1) evaporates upward, increasing the humidity in the drought-resistant vegetation (6) area and promoting the rooting and survival of the drought-resistant vegetation (6).

10. The slope restoration method for desertification control according to claim 9, characterized in that: The water collection and moisture retention component (1) in step A2 can be laid in trenches along the contour lines (4) of the slope or in holes along the contour lines (4).

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