Corrosion-resistance and growth-promotion binary three-dimensional configuration mode suitable for small pisha sandstone area watershed

Abstract

The invention discloses a corrosion-resistance and growth-promotion binary three-dimensional configuration mode suitable for a pisha sandstone area typical geomorphological structure. Different treatment modes are adopted for different three-dimensional spatial positions such as a slope top, a trench slope and a trench bottom, different plants are planted in a matched mode, corresponding engineering measures are taken, and thus the good effects of solidifying pisha sandstone, promoting growth of plants, preserving soil and water and controlling soil and water losses of a pisha sandstone area are achieved. By means of the method, soil and sand can be stabilized, and meanwhile vegetation recovery of the pisha sandstone area is promoted.

Description

Technical field: [0001] The method relates to an anti-corrosion and growth-promoting binary three-dimensional configuration mode suitable for small watersheds of sandstone, and belongs to the technical field of ecological restoration in arid and desertified areas. Background technique: [0002] The arsenic sandstone belongs to a special landform structure in the Loess Plateau area, with red and white alternates, and is mainly distributed in the area centered on the border between Shanxi, Shaanxi and Mongolia. Due to the bare surface, coupled with the interaction of water erosion, wind erosion and gravity erosion, the local extremely serious soil erosion has become the main source of coarse sand in the middle reaches of the Yellow River. When there is no water, the arsenic sandstone is as hard as a rock, but when it meets water, it becomes soft and muddy in a very short time, and at the same time, it is severely eroded by wind. Because the terrain in this area is broken, the...

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Problems solved by technology

Therefore, only using the above-mentioned conservation and treatment methods cannot well solve the problem of fragile ecosystems and large-scale soil erosion.

Moreover, the slope surface is exposed seriously, and due to wind erosion, water erosion, gravity erosion, etc., there is often a large area of ​​arsenic sandstone collapse, and there is no good efficient and low-cost treatment method; and the rainwater collection place in the ditch, the water flow often carries a large amount of water. Sediment flows away, but cannot form an effective interception, resulting in soil erosion

The engineering measures for water and soil control in the sandstone area are currently mainly the construction of check dams, but the construction conditions are difficult, and the service life of the check dams is short after completion, and the effect is not good

[0004] At present, the treatment measures for the arsenic sandstone area are single and regionally distributed, and the maximum effect of biological measures and engineering measures has not been effectively exerted, and the treatment efficiency is low

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