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A method for preventing and controlling wind and sand with grass net mat

A technology of grass net mat and sandstorm is applied in the fields of vegetation restoration, desertification prevention, ecological engineering and environmental protection, which can solve the problems such as the utilization of residual biomass resources without considering the straw, complex management and difficulty in large-scale, etc., and achieve a good effect of windbreak and sand fixation. , the effect of reducing labor intensity and improving the level of modernization

Inactive Publication Date: 2016-09-07
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology system still requires relatively high-intensity resources and facilities input, and does not consider the utilization of agricultural residual biomass resources such as straw, which has the defects of complex management, high cost, and difficulty in large-scale and long-term sustainable promotion and utilization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] On the desertified land at the southern edge of the Tengger Desert in the northern part of Minqin County, Gansu Province, a field test of sand-fixing with grass net mats was carried out according to the above method. The relatively dense burr is maintained, the length of the burr is about 5.0cm, and the test area is 10,000 m 2 ,got a good result. Under the condition of strong wind in spring, the sand collection instrument placed in the downwind direction of the sandy land with grass net mats can collect 52g of sand after a strong wind. Still, the amount of sand collected in the underground wind direction is 750g, and the grass net mat reduces the amount of wind erosion by 93.1%. Moreover, the density of natural plants in the autumn of the year in the area where the grass mat was laid was also significantly higher than that in the control area. After two years, the vegetation coverage in the area where the grass mat was laid reached 32%, while that in the control area w...

Embodiment 2

[0026] The windproof and sand-fixing experiment of the grass net mat was carried out on the deserted land caused by grazing at the southern edge of the Badain Jaran Desert in the northern part of Linze County, Gansu. Test area 10,000 m 2 , the effect of windbreak and sand fixation is close to Example 1, and the amount of wind erosion is reduced by 90%.

[0027] Compared with the traditional grass grid method, this method of windproof and sand-fixing grass net mat has the main advantages of reducing the grid width, increasing the grid density, and further increasing the roughness of the ground surface. enhanced. At the same time, due to the enhanced wind-proof and sand-fixing effect, the grass mat also significantly promotes the settlement and reproduction of natural plants in the grid in the area covered by the mesh mat, and promotes the restoration process of vegetation on the sandy land. Therefore, it is not only a windbreak and sand fixation method, but also an extremely ...

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Abstract

The invention relates to a grass mesh mat sandstorm prevention method. According to the method, various fibrous natural biomass materials such as wheat straw, rice straw, hemp, rattan or delicate rough branches are braided into grass mesh mats with a grid size of 10.0-15.0cm; the plurality of grass mesh mats are sequentially flatly laid on the surface of a desertified land to be treated; the grass mesh mats are linked until the entire surface of the desertified land to be treated is covered; and the grass mesh mats are fixed one by one with fixing piles. The method has a low cost. With the method, the construction manner of a desertification control project is thoroughly changed, and project efficiency is improved. The method is suitable for the treatment of desertified lands in both northern arid and semi-arid and alpine regions and southern and coastal humid and semi-humid regions. With the method, a sandstorm prevention effect can be achieved fast; natural plant colonization and reproduction within the mesh mat coverage area can be promoted; and the desertified land ecological restoration process can be accelerated.

Description

technical field [0001] The invention belongs to the technical fields of desertification prevention and control, vegetation recovery, ecological engineering and environmental protection. Background technique [0002] Grass grid is currently the only desertification prevention and control method with low cost and cost, simple and easy to implement, which has been widely promoted in desertification control practice and has stable and reliable effects. Grass squares can greatly reduce or even eliminate surface wind and sand flow activities, stabilize the surface of loose sandy soil substrates, thereby effectively promoting the subsequent plant settlement and reproduction, and further enabling long-term governance of desertified land. However, the grass grid technology needs to be manually operated on the sandy land site. Although the technical composition of this manual manual operation is not complicated, it is slow, inefficient, and consumes a lot of labor. Moreover, the cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G23/02
CPCA01G13/0268E02D3/005E02D2300/0089
Inventor 张继义阮东辉
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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