A kind of soil and water conservation treatment method for stony mountain erosion steep slope with thin soil layer

Abstract

The invention discloses a water and soil conservation control method of a soil laminated rocky mountain erosion steep slope. The method is aimed at characteristics of soil laminated rocky mountains in Dianchi Lake base, and comprise: using leguminosae drought-enduring plants and some drought and barren tolerant economic crops supplemented by engineering measures of separated slope level trenches, fish-scale pits, and hedgerows, designing a recovery mode, planting sisal hemp in the separated slope level trenches whose number are odd numbers; planting dodonaea viscose or pigenpea in the ridge on the trench lower surface of the separated slope level trenches in odd numbers; planting opopanax, white popinac, sophora xanthantha, or acaia yunnanensis in the separated slope level trenches whose numbers are even numbers, cutting grassiness in the ridge on the trench lower surface of the separated slope level trenches in even numbers; and planting pomegranate or alfalfa in the fish-scale pit between the separated slope level trenches; and planting Chinese prickly ash in planting trenches on the base of the slope. Through treatment of three years, soil erosion amount is reduced by more than 70%, and plant coverage rate is increased to 90% from original lower than 30%, and pollutants of main non-point source pollution is reduced by more than 70%.

Description

technical field [0001] The invention belongs to the field of ecological restoration, and in particular relates to a method for planting soil-fixing and water-retaining plants on the steep erosion slopes of thin-layer rocky mountain lands, which are difficult for afforestation in the Dianchi Lake Basin of Yunnan Province. Background technique [0002] Soil erosion has become a major ecological environment problem in the world, and my country is the country with the most serious water and soil erosion in the world. my country's current soil erosion area is about 1.5 million square kilometers, and the soil lost by water and soil erosion is roughly 5 billion tons. Along with soil erosion, various nutrients attached to the surface of soil particles are lost, and flow into the receiving water body along the slope area, resulting in eutrophication and other forms of non-point source pollution. In order to control the water and soil loss in the rocky mountains with thin soil layers...

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Problems solved by technology

Among them, phytoremediation technology is also highly targeted. Both plants and soil are suitable for specific areas. There is no specific research on the treatment of thin rocky mountain erosion and steep slopes in the Dianchi Lake Basin. The artificial optimal community is combined with engineering measures. Combined studies have not been reported

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