Vegetation recovery method suitable for wind power plant in high and cold gobi area
By using ecological blankets, organic fertilizers and microbial agents in wind energy power farms in the high-altitude Gobi area, combined with vegetation restoration methods with specific plants, the problems of soil degradation and low vegetation coverage are solved, and the effects of soil water conservation and fertilizer conservation and vegetation restoration are achieved.
Patent Information
- Application Number
- CN202510950104.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-08-19
AI Technical Summary
Extreme climatic conditions and wind energy power farm construction in the alpine Gobi area have led to soil degradation and reduced vegetation coverage. Traditional vegetation restoration technology has limited effect in the plateau Gobi area and lacks systematic solutions.
The synergistic effect of ecological blankets, organic fertilizers and microbial fungi agents is adopted, combined with alfalfa, ice grass, sandbag, early maturity, fescue and cattle branches and other plants, soil pretreatment, ecological blankets and improved layers, and regular irrigation and maintenance are improved to improve the soil's water and fertilizer retention performance.
It significantly improves soil moisture content and organic matter content, improves vegetation coverage, and realizes the coordinated development of wind energy power farms and ecological environment.
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Figure CN120500943A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of vegetation restoration, and in particular relates to a vegetation restoration method for wind power plants in high-altitude and cold Gobi areas. Background Art
[0002] The Gobi Desert in the Qinghai-Tibet Plateau suffers from extreme climatic conditions, including high altitude, drought, and strong radiation, resulting in poor soil quality, low organic matter content, and poor water-holding capacity, severely hindering vegetation restoration. In recent years, the construction of large-scale wind farms has further exacerbated local soil degradation, leading to a decrease in vegetation cover. Furthermore, traditional vegetation restoration techniques (such as the single application of organic fertilizers or water-retaining agents) have limited effectiveness in the Gobi Desert, and there is a lack of systematic solutions tailored to specific habitats such as wind farms.
[0003] Therefore, there is an urgent need for a vegetation restoration technology that is adapted to the special environment of the plateau and takes into account the system layout of wind power plants. Summary of the Invention
[0004] To address the aforementioned issues with existing technologies, the present invention provides a vegetation restoration method suitable for wind farms in high-altitude Gobi regions. Through the synergistic effects of ecological mats, organic fertilizers, and microbial inoculants, the method effectively improves soil water and fertilizer retention in wind farms in the Gobi region of the Qinghai-Tibet Plateau, promotes vegetation restoration, and achieves the coordinated development of power generation and ecology.
[0005] The technical solution adopted in the present invention is: A method for restoring vegetation in a wind farm in a high-altitude Gobi region comprises the following steps: (1) Soil pretreatment; (2) Laying a layer of ecological blanket on the pretreated soil, and then laying a layer of soil improvement layer; (3) Select plant combinations for mixed planting; (4) Regular irrigation and maintenance.
[0006] In step (1), the soil is pre-treated by leveling the target area, removing gravel, and plowing the soil. Preferably, the soil is plowed to a depth of 20-30 cm.
[0007] In step (2), the soil improvement layer is an organic fertilizer layer or a microbial agent layer.
[0008] The ecological blanket is a coconut fiber ecological blanket with a thickness of ≥5mm and a porosity of ≥60%, thereby ensuring that the normal plant water in the test area is not evaporated in the high radiation and strong wind area of the wind farm.
[0009] The organic fertilizer is decomposed sheep manure, the organic matter content of the decomposed sheep manure is ≥40%, and the application amount is 3-5 kg / m².
[0010] The microbial agent is one or more of Bacillus subtilis, Bacillus gelatinosa, and Bacillus licheniformis; preferably, the microbial agent is a composite microbial agent composed of Bacillus subtilis, Bacillus gelatinosa, and Bacillus licheniformis in a mass ratio of (3-5): (2-4): (2-4), the functions of the three bacteria are complementary, Bacillus subtilis as the basic agent needs to be dominant, at 3-5 parts, and Bacillus gelatinosa and Bacillus licheniformis can be fine-tuned according to the soil phosphorus content and the degree of drought, at 2-4 parts, to ensure the stability of the core function and adapt to the differences in local microhabitats.
[0011] The effective viable bacteria count of the composite microbial agent is ≥2×10 8 CFU / g, the water dilution ratio is 300-500 times, and the application amount is 50-100 g / m².
[0012] In step (3), the plant combination is a combination of six plants: alfalfa, wheat grass, Astragalus membranaceus, Kentucky bluegrass, Festuca australis and Rhizoma Cistanches.
[0013] The six plant species in the plant combination are mixed in a ratio of (1-2): (1-2): (1-2): (1-2): (1-1.5): (1-2): (1-1.5) in mass. This is because: alfalfa and Astragalus (Leguminosa) are core soil-improving species, and their ratio can be slightly higher, at 1-2 parts, to enhance soil nitrogen replenishment; wheatgrass and Festuca (Grass) are stress-resistant cover species, and their ratio is maintained at 1-2 parts to ensure windbreak and sand fixation; and Poa annua and Festuca (Lonicera japonica) are auxiliary species, and their ratio is slightly lower, at 1-1.5 parts, to avoid excessive competition and maintain community diversity.
[0014] When performing the mixed sowing, the sowing density is 25-35 g / m². The sowing density is calculated by the ratio of the total weight of the selected plants to the total area of the test plot.
[0015] In step (4), the irrigation is carried out once a week with a water volume of 5-10 L / m², and the maintenance is continued for 3 months.
[0016] The present invention has the following beneficial effects: This invention provides a method for restoring vegetation at wind farms in high-altitude Gobi regions. By first applying a bio-mat to pretreated soil, followed by organic fertilizer or microbial inoculants, and then inter-seeding plant combinations tailored to the habitat type of each region, and finally implementing regular irrigation and maintenance, this method effectively improves soil water and fertilizer retention in photovoltaic wind farms in the Gobi region of the Qinghai-Tibet Plateau, promotes vegetation restoration, and achieves the coordinated development of wind power generation and the environment. Experiments have shown that the method, using a combination of "ecological mat + organic fertilizer / microbial inoculants" and "alfalfa + astragalus + bluegrass + wool + sedge + wheatgrass," increased soil moisture by 14.24-16.21% (compared to pre-treatment levels). The improved soil organic matter content increased by 17.83-21.52%, and the total nitrogen and total phosphorus contents in the topsoil (0-20 cm) were significantly increased. Vegetation cover also increased by 5.9-7.1%. In summary, the method is suitable for ecological restoration in high-altitude Gobi regions. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 Shown is a diagram of the test configuration around the wind turbine tower. DETAILED DESCRIPTION
[0019] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.
[0020] Unless otherwise specified, all reagents involved in the specific embodiments of the present invention are commercially available products and can be purchased through commercial channels.
[0021] Example 1 This embodiment provides a method for restoring vegetation in a wind farm in an alpine Gobi region, comprising the following steps: (1) Soil pretreatment: Level the area around the wind turbine tower, remove gravel, and till the soil to a depth of 20-30 cm; (2) Apply an ecological blanket to the pretreated soil. Specifically, divide the target area into an organic fertilizer test area and a microbial agent test area (see Figure 1 ).
[0022] In the organic fertilizer test area, an ecological blanket layer was first laid, followed by an organic fertilizer layer; in the microbial agent test area, an ecological blanket layer was first laid, followed by a microbial agent layer; the area ratio of the organic fertilizer test area to the microbial agent test area was 1:1; the ecological blanket was a coconut fiber ecological blanket with a thickness of ≥5 mm, a porosity of ≥60%, and a coverage area of 100% of the target area; the organic fertilizer was evenly spread decomposed sheep manure with an organic matter content of ≥40% and an application rate of 3-5 kg / m²; the microbial agent was a composite microbial agent sprayed with Bacillus subtilis, Bacillus gelatinus, and Bacillus licheniformis in a mass ratio of 4:3:3, and a water dilution ratio of 300-500 times, with an effective viable count of ≥2×10 8 CFU / g, application rate is 50-100 g / m²; (3) The above-mentioned organic fertilizer test area and microbial agent test area were divided into 5 small areas, and a total of 10 small areas were obtained; the corresponding plant combination was selected for mixed sowing, as shown in Table 1. The plant combination was a combination of six plants: alfalfa, wheat grass, Astragalus, Kentucky bluegrass, Festuca australis, and Rhizoma Cistanches. The mixing ratio of the six plants was 1:1:1:1:1:1, and the sowing density was 25-35g / m²; (4) Regular irrigation and maintenance: irrigate once a week at a water rate of 5-10 L / m² for three consecutive months. The test results of the soil organic matter, moisture content, total nitrogen, total phosphorus, and vegetation coverage after restoration and improvement are shown in Table 1.
[0023] Table 1 - Performance test results of vegetation restoration using different schemes The average vegetation coverage of the sample area before restoration and improvement was 6.3% (microbial agents as soil improvement layer) and 6.2% (organic fertilizer as soil improvement layer); the average vegetation coverage of the sample area after restoration and improvement was 6.6% (microbial agents as soil improvement layer) and 6.5% (organic fertilizer as soil improvement layer). After calculation, the vegetation coverage of the sample area and organic fertilizer as soil improvement layer increased by: (6.5-6.2) / 6.2*100%=4.84% before and after restoration; the vegetation coverage of the sample area and microbial agents as soil improvement layer increased by: (6.6-6.3) / 6.3*100%=4.76% before and after restoration.
[0024] Therefore, it can be concluded that the comprehensive scheme of using ecological blanket + organic fertilizer, combined with "alfalfa + sand viburnum + bluegrass + wool + tsaoko + ice grass" has the best effect after soil remediation and improvement, with an average vegetation coverage rate of 6.5%, an increase of 4.84% compared with the vegetation coverage before remediation and improvement.
[0025] Example 2 This embodiment provides a method for restoring vegetation in a wind farm in an alpine Gobi region, comprising the following steps: (1) Soil pretreatment: Level the area around the wind turbine tower, remove gravel, and till the soil to a depth of 20-30 cm; (2) Apply an ecological blanket to the pretreated soil. Specifically, divide the target area into an organic fertilizer test area and a microbial agent test area.
[0026] In the organic fertilizer test area, an ecological blanket layer was first laid, followed by an organic fertilizer layer; in the microbial agent test area, an ecological blanket layer was first laid, followed by a microbial agent layer; the area ratio of the organic fertilizer test area to the microbial agent test area was 1:1; the ecological blanket was a coconut fiber ecological blanket with a thickness of ≥5 mm, a porosity of ≥60%, and a coverage area of 100% of the target area; the organic fertilizer was evenly spread decomposed sheep manure with an organic matter content of ≥40% and an application rate of 3-5 kg / m²; the microbial agent was a composite microbial agent sprayed with Bacillus subtilis, Bacillus gelatinus, and Bacillus licheniformis in a mass ratio of 3:4:2, and a water dilution ratio of 300-500 times, with an effective viable count of ≥2×10 8 CFU / g, application rate is 50-100 g / m²; (3) Divide the above-mentioned organic fertilizer test area and microbial agent test area into 5 small areas, and obtain a total of 10 small areas; select corresponding plant combinations for mixed sowing, the plant combination is a combination of six plants: alfalfa, wheat grass, astragalus, bluegrass, fescue, and oxtail twig, the mixing ratio of the six plants is: the mass ratio of alfalfa, wheat grass, astragalus, bluegrass, fescue and oxtail twig is 1:2:1:1.5:1:1.5, and the sowing density is 25-35g / m²; (4) Regular irrigation and maintenance: irrigate once a week with a water volume of 5-10L / m² for 3 consecutive months.
[0027] Example 3 This embodiment provides a method for restoring vegetation in a wind farm in an alpine Gobi region, comprising the following steps: (1) Soil pretreatment: Level the area around the wind turbine tower, remove gravel, and till the soil to a depth of 20-30 cm; (2) Apply an ecological blanket to the pretreated soil. Specifically, divide the target area into an organic fertilizer test area and a microbial agent test area.
[0028] In the organic fertilizer test area, an ecological blanket layer was first laid, followed by an organic fertilizer layer; in the microbial agent test area, an ecological blanket layer was first laid, followed by a microbial agent layer; the area ratio of the organic fertilizer test area to the microbial agent test area was 1:1; the ecological blanket was a coconut fiber ecological blanket with a thickness of ≥5 mm, a porosity of ≥60%, and a coverage area of 100% of the target area; the organic fertilizer was evenly spread decomposed sheep manure with an organic matter content of ≥40% and an application rate of 3-5 kg / m²; the microbial agent was a composite microbial agent sprayed with Bacillus subtilis, Bacillus gelatinus, and Bacillus licheniformis in a mass ratio of 5:2:4, and a water dilution ratio of 300-500 times, with an effective viable count of ≥2×10 8 CFU / g, application rate is 50-100 g / m²; (3) Divide the above-mentioned organic fertilizer test area and microbial agent test area into 5 small areas, and obtain a total of 10 small areas; select corresponding plant combinations for mixed sowing, the plant combination is a combination of six plants: alfalfa, wheat grass, astragalus, bluegrass, fescue, and oxtail twig, the mixing ratio of the six plants is: the mass ratio of alfalfa, wheat grass, astragalus, bluegrass, fescue and oxtail twig is 2:1:2:1:2:1, and the sowing density is 25-35g / m²; (4) Regular irrigation and maintenance: irrigate once a week with a water volume of 5-10L / m² for 3 consecutive months.
[0029] The proposed method for restoring vegetation at wind farms in high-altitude Gobi regions involves first applying a bio-mat to pretreated soil, followed by organic fertilizer or microbial inoculants, then inter-seeding selected plant combinations, and finally regular irrigation and maintenance. This method effectively improves soil water and fertilizer retention in wind farms in the Gobi region of the Qinghai-Tibet Plateau, promotes vegetation restoration, and achieves the coordinated development of wind power generation systems and the ecological environment. Experiments have shown that the proposed method, using a combination of "ecological mat + organic fertilizer / microbial inoculants" and "alfalfa + astragalus + bluegrass + wool + sedge + wheatgrass," increased soil moisture by 14.24-16.21% (compared to pre-treatment levels). The improved soil organic matter content increased by 17.83-21.52%, and the total nitrogen and total phosphorus contents in the topsoil (0-20 cm) were significantly increased. Vegetation cover also increased by 5.9-7.1%. In summary, the proposed method is suitable for ecological restoration in high-altitude Gobi regions.
Claims
1. A method for restoring vegetation in wind farms in high-altitude Gobi areas, characterized in that: The steps include: (1) Soil pretreatment; (2) Laying a layer of ecological blanket on the pretreated soil, and then laying a layer of soil improvement layer; (3) Select plant combinations for mixed planting; (4) Regular irrigation and maintenance.
2. The vegetation restoration method for wind farms in alpine Gobi areas according to claim 1 is characterized in that: In step (1), the soil pretreatment is as follows: leveling the target area, removing gravel and plowing the soil.
3. According to the vegetation restoration method for wind power plants in high-altitude Gobi areas as described in claim 2, in step (2), the soil improvement layer is an organic fertilizer layer or a microbial agent layer.
4. The method for restoring vegetation in a wind farm suitable for use in alpine Gobi areas according to claim 3, characterized in that: The ecological blanket is a coconut fiber ecological blanket, and the thickness of the coconut fiber ecological blanket is ≥5mm and the porosity is ≥60%.
5. The method for restoring vegetation in a wind farm suitable for use in alpine Gobi areas according to claim 3, characterized in that: The organic fertilizer is decomposed sheep manure, the organic matter content of the decomposed sheep manure is ≥40%, and the application amount is 3-5 kg / m².
6. The method for restoring vegetation in a wind farm suitable for use in alpine Gobi areas according to claim 3, characterized in that: The microbial agent is one or more of Bacillus subtilis, Bacillus jelly-like and Bacillus licheniformis; preferably, the microbial agent is a composite agent composed of Bacillus subtilis, Bacillus jelly-like and Bacillus licheniformis in a mass ratio of (3-5): (2-4): (2-4), and the effective viable count of the microbial agent is ≥ 2×10 8 CFU / g, the water dilution ratio is 300-500 times, and the application amount is 50-100 g / m².
7. The method for restoring vegetation in a wind farm suitable for use in alpine Gobi areas according to claim 3, characterized in that: In step (3), the plant combination is a combination of six plants: alfalfa, wheat grass, Astragalus membranaceus, Kentucky bluegrass, Festuca australis and Rhizoma Cistanches.
8. The method for restoring vegetation in a wind farm suitable for use in alpine Gobi areas according to claim 7, characterized in that: When carrying out the mixed sowing, the sowing density is 25-35g / m².
9. The method for restoring vegetation in a wind farm in a high-altitude Gobi region according to claim 7, characterized in that: In the plant combination, the mixing ratio of the six plants is: the mass ratio of alfalfa, wheat grass, Astragalus membranaceus, Kentucky bluegrass, Festuca australis and Rhizoma Cistanches is (1-2): (1-2): (1-2): (1-1.5): (1-2): (1-1.5).
10. The method for restoring vegetation in a wind farm in a high-altitude Gobi region according to claim 1, characterized in that: In step (4), the irrigation is carried out once a week with a water volume of 5-10 L / m², and the maintenance is continued for 3 months.