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Comprehensive control method for water and soil loss in loess plateau gully regions

A loess plateau, comprehensive prevention and control technology, applied in the direction of soil preparation methods, agricultural machinery and tools, agricultural gas emission reduction, etc., can solve the problems of slow control effect and high cost, achieve rapid effect, promote growth, and increase vegetation coverage

Inactive Publication Date: 2017-05-17
NORTHWEST NORMAL UNIVERSITY
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Problems solved by technology

[0004] At present, the prevention and control of water and soil loss in the gully area of ​​the Loess Plateau usually adopts engineering measures such as afforestation, cement engineering slope protection, building horizontal terraces, damming and silting, etc. Although there is a certain control effect, there are disadvantages such as high cost and slow control effect

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  • Comprehensive control method for water and soil loss in loess plateau gully regions
  • Comprehensive control method for water and soil loss in loess plateau gully regions
  • Comprehensive control method for water and soil loss in loess plateau gully regions

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Embodiment Construction

[0018] Below through the control of water and soil loss in Tianshui area, Huanxian County, Gansu, the technical scheme and control effect of the present invention will be further described.

[0019] (1) Primitive landform: In the Tianshui area of ​​Huanxian County, Gansu Province, the soil erosion is serious, the landform is bare, and there is no vegetation cover. For the prevention and control of soil erosion, see figure 2 .

[0020] (2) Landform engineering rectification: Make continuous squares in the direction perpendicular to the direction of water and soil loss, covering the exposed areas. The side length of the square grid is 3 m, the side is trapezoidal, the upper base is 0.25 m wide, the lower base is 0.5 m wide, and the height is 0.5 m. The sides and the inside of the grid are covered with a layer of loess with a thickness of 5 cm. For details, see image 3 .

[0021] (3) Selection and planting of plants: mainly herb plants (such as wheatgrass and alfalfa) in the ...

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Abstract

The invention provides a comprehensive control method for water and soil loss in loess plateau gully regions. The comprehensive control method includes (1) landform engineering changing: setting continuous square grids with the same length according to the landform of a loess plateau gully region and the water and soil loss direction; and (2) plant cultivation: selecting ecological plants capable of growing in the loess plateau gully region from a local soil seed bank, and planting the ecological plants in the square grids. Based on the engineering measures, the landform resistance of the loess plateau gully region is increased, and then water and soil loss can be prevented; with plant growth as a lead, the coverage degree of an earth surface is increased; with a functional high polymer water-retaining agent as a guarantee, the survival rate of the plants can be improved, the growth of the plants is promoted, and ecological environment healthy treatment of water and soil loss in loess plateau gully regions can rapidly achieved. The comprehensive method is tested in a Gansu huanxia tianshui region, acquires a good effect, can remarkably improve the plant survival rate and the vegetation coverage rate, and can rapidly and remarkably prevent water and soil loss.

Description

technical field [0001] The invention relates to a comprehensive prevention and control technology for water and soil loss in the gully area of ​​the Loess Plateau, in particular to an "engineering-plant-functional polymer material" comprehensive prevention and control method for water and soil loss in the gully area of ​​the Loess Plateau, belonging to the field of water and soil conservation. Background technique [0002] The gully area of ​​the Loess Plateau includes the Luochuan plateau in northern Weibei, the gully area in the eastern part of Weibei, the Dongzhiyuan area in eastern Longdong, and the remnant plateau and gully area in western Shanxi, involving a total of 35 counties and cities across Gansu and Shaanxi provinces. The area is vast, with a total area of ​​71,000 km 2 , the population density in the area is 130 people / km 2 , with a total population of nearly 9.3 million. The gully area of ​​the Loess Plateau is one of the main landform types of the Loess...

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02Y02P60/20
Inventor 张文旭雷自强马国富张哲
Owner NORTHWEST NORMAL UNIVERSITY
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