Artificial soil for rocky desertification land restoration based on erosion-resistant gypsum quick-greening material

Abstract

The utility model relates to the technical field of land restoration structures, in particular to stony desertification land restoration artificial soil based on erosion-resistant gypsum quick-green materials, which comprises a fixed layer, a nutrition layer and a vegetation layer which are sequentially covered on bare rocks of stony desertification land layer by layer, and each layer is made of the erosion-resistant gypsum quick-green materials. The nutrient layer is arranged on the upper portion of the fixing layer, the vegetation layer is arranged on the upper portion of the nutrient layer, and a reinforcing net is installed at the bottom of the fixing layer. According to the artificial soil for rocky desertification land restoration based on the erosion-resistant gypsum quick-green material, the artificial soil made of the erosion-resistant gypsum quick-green material has good erosion resistance, can be kept stable under rain erosion, effectively prevents water and soil loss and improves the erosion resistance of the restored land. The nutrient content in the nutrition layer is larger than 30%, sufficient nutrients can be provided for plant growth, growth and development of plant roots are promoted, and rapid recovery of vegetation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of land restoration structures, in particular to an artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening materials. Background Art

[0002] Desertification is a serious environmental problem, especially in some arid and semi-arid areas. Due to over-exploitation, irrational use of land and natural factors, the soil is barren, the vegetation is degraded, and finally the exposed rock landform is formed. This landform is not only ecologically fragile, but also poses great challenges to human production and life. In order to repair these damaged lands, people have tried many methods, among which artificial afforestation and grass planting are common means.

[0003] However, traditional artificial afforestation and grass planting methods are not ideal on rocky desertified land. This is mainly because these methods require a large amount of foreign soil for surface coverage to provide the soil environment required for plant growth. However, the source of foreign soil is limited, the cost of mining and transfer is high, and it is easily dissolved in water during use and does not have soil and water conservation properties. Therefore, the restored land can often only last for a short time, and the effect is difficult to last. Utility Model Content

[0004] The purpose of the utility model is to provide an artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening materials, so as to solve the problems mentioned in the above background technology that the source of imported soil is limited, the cost of mining and transfer is high, and it is easy to dissolve in water during use and has no soil and water conservation performance. Therefore, the restored land can often only last for a short time and the effect is difficult to last.

[0005] To achieve the above-mentioned purpose, the utility model provides an artificial soil for restoring desertified land based on erosion-resistant gypsum fast-greening material, comprising a fixed layer, a nutrient layer and a vegetation layer which are sequentially covered on the exposed rocks of the desertified land, each layer being composed of the erosion-resistant gypsum fast-greening material and constructed by spraying, the nutrient layer being arranged on the upper part of the fixed layer, the vegetation layer being arranged on the upper part of the nutrient layer, a reinforcement net being installed at the bottom of the fixed layer, the bottom surface of the reinforcement net being in contact with the top surface of the exposed rocks of the desertified land, the mesh diameter of the reinforcement net being less than 15 mm, a plurality of partition nets being vertically arranged inside the nutrient layer, the partition nets dividing the inside of the nutrient layer into different planting areas, a covering film being arranged on the top surface of the covering film, and a plurality of air permeable tubes being provided on the surface of the covering film.

[0006] Preferably, the fixing layer is made of erosion-resistant gypsum quick-greening material, in which gypsum accounts for more than 70%, has high strength, can form a good fixation for rocky desertified land, and has a thickness of 20 cm.

[0007] Preferably, the nutrient layer is made of erosion-resistant gypsum fast-greening material, the nutrient content of this layer is greater than 30%, the strength is lower than that of the fixed layer, it is conducive to the growth of plant roots, and the thickness is 40-70 cm.

[0008] Preferably, the vegetation layer is made of erosion-resistant gypsum fast-greening material and is used for sowing seeds of herbaceous and low shrub plants. The nutrient content of this layer is greater than 50%, and the strength is lower than that of the nutrient layer, which is conducive to rapid germination and growth of seeds. The thickness is 10 cm, and the top layer reserves a 2-5 cm layer of nutrient soil for adding plant seeds for spraying construction.

[0009] Preferably, the spraying construction is carried out layer by layer in the order of fixed layer, nutrient layer and vegetation layer. The thickness of each spraying is adjusted according to the terrain conditions and controlled at 2-10cm. During the spraying construction, tree planting pits are reserved according to the specific design plan. Trees are planted after the nutrient layer construction is completed. Finally, the vegetation layer material is sprayed on the nutrient layer and in the planting pits.

[0010] Preferably, the fixing layer, the nutrient layer and the vegetation layer form a soil layer, and vegetation restoration is completed by reserving tree planting pits on the soil layer, planting trees in the planting pits, and spraying plant seeds on the upper layer of the vegetation layer.

[0011] Preferably, a first tall tree and a second tall tree are planted on the soil layer, and herbaceous low shrubs are planted in the gap between the first tall tree and the second tall tree, and the plant roots of the first tall tree and the second tall tree extend to the fixed layer.

[0012] Preferably, the reinforcement net is made of polypropylene.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The artificial soil for restoration of desertified land based on erosion-resistant gypsum fast-greening material has good erosion resistance, can remain stable under rain erosion, effectively prevent soil erosion, and improve the anti-erosion ability of the restored land. The nutrient content in the nutrient layer is greater than 30%, which can provide sufficient nutrients for plant growth, promote the growth and development of plant roots, and is conducive to the rapid recovery of vegetation. A stable artificial soil structure is formed by setting a fixed layer, a nutrient layer and a vegetation layer. The fixed layer can form a good fixation for the desertified land, the nutrient layer provides nutrients for plant growth, and the vegetation layer provides a good environment for the sowing of herbaceous and low shrub plant seeds. The spraying method is used for construction, and the thickness of each layer can be adjusted according to the terrain conditions. The construction is simple and fast, which reduces the cost and time of restoration. By reserving tree planting pits and adding plant seeds for spraying construction, diversified vegetation restoration is achieved. The combination of tall trees and herbaceous low shrubs is conducive to the restoration of the ecosystem and the improvement of biodiversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the coating in the utility model.

[0018] The meaning of each number in the figure is:

[0019] 1. Bare rocks in rocky desertification land; 2. Fixed layer; 3. Nutrition layer; 31. Separation net; 4. Vegetation layer; 41. Covering film; 42. Air holes; 5. The first tallest tree; 6. Herbaceous low shrubs; 7. The second tallest tree; 8. Plant root system. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides an artificial soil for repairing rocky desertification land based on erosion-resistant gypsum fast-greening material, such as Figure 1-Figure 3As shown, it includes a fixed layer 2, a nutrient layer 3 and a vegetation layer 4 which are sequentially covered on the exposed rocks 1 of the desertified land. Each layer is composed of erosion-resistant gypsum quick-greening material. As a common industrial waste, phosphogypsum is considered to be a potential alternative material because of its good gelling properties and rich nutrient content. By modifying and modulating phosphogypsum, a erosion-resistant gypsum quick-greening material can be prepared. By adding nutrients to phosphogypsum, it is modulated into a gypsum quick-greening material containing certain nutrients. This material not only has a good soil and water conservation effect, but also can provide the nutrients required for plant growth. It is constructed by spraying. The gypsum quick-greening material is a material in the prior art and will not be described in detail here. The nutrient layer 3 is arranged on the upper part of the fixed layer 2, and the vegetation layer 4 is arranged on the upper part of the nutrient layer 3. A reinforcing net 21 is installed at the bottom of the fixed layer 2. The bottom surface of the reinforcing net 21 fits with the top surface of the exposed rock 1 of the desertified land. The mesh diameter of the reinforcing net 21 is less than 15 mm. A plurality of partition nets 31 are vertically arranged inside the nutrient layer 3. The partition nets 31 divide the interior of the nutrient layer 3 into different planting areas to prevent the roots of various vegetation from affecting each other. A covering film 41 is arranged on the top surface of the vegetation layer 4, and a plurality of air vents 42 are provided on the surface of the covering film 41 to ensure a good ventilation effect.

[0022] In this embodiment, the fixing layer 2 is made of erosion-resistant gypsum fast-greening material. The gypsum in this layer accounts for more than 70%, has high strength, can form a good fixation for the rocky desertified land, and has a thickness of 20 cm.

[0023] Specifically, the nutrient layer 3 is made of erosion-resistant gypsum fast-greening material. The nutrient content of this layer is greater than 30%, and its strength is lower than that of the fixed layer, which is conducive to the growth of plant roots. The thickness is 40-70 cm.

[0024] Furthermore, the vegetation layer 4 is made of erosion-resistant gypsum fast-greening material, and is used for sowing seeds of herbaceous and low shrub plants. The nutrient content of this layer is greater than 50%, and the strength is lower than that of the nutrient layer, which is conducive to rapid germination and growth of seeds. The thickness is 10 cm, and the top layer reserves a layer thickness of 2-5 cm for adding plant seeds for spraying construction.

[0025] Furthermore, the spraying construction is carried out layer by layer in the order of fixed layer 2, nutrient layer 3 and vegetation layer 4. The thickness of each spraying is adjusted according to the terrain conditions and controlled at 2-10 cm. During the spraying construction, tree planting pits are reserved according to the specific design plan. After the nutrient layer construction is completed, the trees are planted. Finally, the vegetation layer material is sprayed on the nutrient layer and in the planting pits.

[0026] Furthermore, the fixed layer 2, the nutrient layer 3 and the vegetation layer 4 form a soil layer, and by reserving tree planting pits on the soil layer, then planting trees in the planting pits and spraying plant seeds on the upper layer of the vegetation layer to complete vegetation restoration.

[0027] Furthermore, a first tall tree 5 and a second tall tree 7 are planted on the soil layer, a herbaceous low shrub 6 is planted between the first tall tree 5 and the second tall tree 7, and plant roots 8 of the first tall tree 5 and the second tall tree 7 extend to the fixed layer 2.

[0028] Furthermore, the reinforcement net 21 is made of polypropylene material, which has good strength and corrosion resistance.

[0029] When the artificial soil for desertification restoration based on the erosion-resistant gypsum fast-greening material of the utility model is used, the fixing layer 2, the nutrient layer 3 and the vegetation layer 4 are firstly covered on the exposed rock 1 of the desertification land layer by layer by spraying. The fixing layer 2 is made of the erosion-resistant gypsum fast-greening material, which has high strength and can form a good fixation for the desertification land, effectively preventing soil erosion and erosion. The nutrient layer 3 is also composed of the erosion-resistant gypsum fast-greening material, but the nutrient content is higher, providing sufficient nutrition for the growth of plants. The vegetation layer 4 is used to provide a suitable environment for the sowing of seeds of herbaceous and low shrub plants.

[0030] During the construction process, the thickness of each layer is adjusted according to the terrain conditions, and the layers are constructed layer by layer through spraying to ensure the close connection between the layers. At the same time, tree planting pits are reserved during the spraying construction so that trees can be planted after the nutrient layer construction is completed. Finally, the vegetation layer material is sprayed in the nutrient layer and the planting pit to complete the entire repair process.

[0031] The provision of the reinforcement net 21 enhances the fit between the fixing layer 2 and the exposed rock 1 of the rocky desertification land, and improves the overall stability. The partition net 31 divides the nutrient layer 3 into different planting areas. The provision of the covering film 41 and the air permeable tube 42 ensures the ventilation effect of the vegetation layer 4, which is conducive to the germination and growth of seeds.

[0032] Through the application of this hierarchical structure design and the erosion-resistant gypsum quick-greening material, the utility model can form a stable artificial soil layer on the rocky desertified land, providing a good environment for the growth of vegetation. Over time, the roots of the vegetation will gradually grow and extend to the fixed layer 2, further enhancing the stability of the entire repair structure. The roots of tall trees can also grow to the original rock surface or even deep into the rock cracks, forming a fixing / gripping effect on the original rock surface. At the same time, the combination of tall trees and herbaceous low shrubs helps to restore the diversity of the ecosystem and improve the ecological benefits.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material, characterized by: The invention comprises a fixed layer (2), a nutrient layer (3) and a vegetation layer (4) which are sequentially covered on bare rocks (1) of rocky desertification land, each layer being made of erosion-resistant gypsum quick-greening material and constructed by spraying, the nutrient layer (3) being arranged on the upper part of the fixed layer (2), the vegetation layer (4) being arranged on the upper part of the nutrient layer (3), a reinforcing net (21) being installed at the bottom of the fixed layer (2), the bottom surface of the reinforcing net (21) being in contact with the top surface of the bare rocks (1) of the rocky desertification land, the mesh diameter of the reinforcing net (21) being less than 15 mm, a plurality of partition nets (31) being vertically arranged inside the nutrient layer (3), the partition nets (31) dividing the inside of the nutrient layer (3) into different planting areas, a covering film (41) being arranged on the top surface of the vegetation layer (4), a plurality of air permeable tubes (42) being provided on the surface of the covering film (41).

2. The artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material according to claim 1 is characterized by: The fixing layer (2) is made of erosion-resistant gypsum quick-green material and has a thickness of 20 cm.

3. The artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material according to claim 1 is characterized by: The nutrient layer (3) is made of erosion-resistant gypsum fast-greening material and has a thickness of 40-70 cm.

4. The artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material according to claim 1 is characterized by: The vegetation layer (4) is made of erosion-resistant gypsum fast-greening material, has a thickness of 10 cm, and a 2-5 cm thick layer of nutrient soil is reserved on the top layer.

5. The artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material according to claim 1 is characterized by: The fixed layer (2), the nutrient layer (3) and the vegetation layer (4) form a soil layer, on which a first tall tree (5) and a second tall tree (7) are planted, and between the first tall tree (5) and the second tall tree (7) there are herbaceous low shrubs (6), and the plant root systems (8) of the first tall tree (5) and the second tall tree (7) extend to the fixed layer (2).

6. The artificial soil for restoration of rocky desertification land based on erosion-resistant gypsum fast-greening material according to claim 1 is characterized by: The reinforcement net (21) is made of polypropylene material.

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