南水北调中线水源区水土流失机制研究

Study on Soil and Water Loss Mechanism in Water Source Area of Middle Route of South-to-North Water Diversion

南水北调中线水源区石漠化广泛分布,石漠化会加速土壤侵蚀,影响水源区水质、水生态、水环境和调水工程安全,同时也阻碍着当地经济社会的发展。研究采用调查法、历史分析法和案例分析法,解析了水源区不同土地利用类型、水土流失现状以及不同坡度对水土流失的影响。结果表明林地的水土流失面积最大,不同坡度下水土流失差异很大。研究可为进一步保护水源区水生态、水环境和水质安全提供科学依据。

Rocky desertification is widely distributed in the water source area of the middle routeof the South-to-North Water Diversion Project.Rocky desertification will accelerate soil erosion,affect the water quality,water ecology,water environment and water transfer project safety in the water source area,and will also hinder the development of local economy and society.In this study,investigation,historical research and case analysis are used to analyze the current situation of soil and water loss of different land use types and the impact of different slope on soil and water loss in the water source region.The results shows that the area of soil and water loss in forestland is the largest,and the soil and water loss varies greatly under different slopes.This study can provide scientific basis for further protection of water ecology,water environment and water quality safety in the water source region.