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选取安徽省霍山县大官山的典型研究区域,通过径流试验,分析了近20年6种典型土地利用方式的侵蚀产沙特性及影响因素。结果表明:不同土地利用方式对坡面侵蚀产沙量的影响依次是顺坡耕作区>标准小区>经济林区>牧草区>乔木用材林区>梯田小区。在不同土地利用方式下,防止土壤流失最有效的是梯田,而顺坡耕作区水土流失量最大。坡面侵蚀产沙量与降雨侵蚀力表现为幂函数关系,且相关性达到了极显著水平。
A typical study area of DaGuanshan in Huoshan County, Anhui Province was selected to study the characteristics and influencing factors of soil erosion and sediment yield of six typical land-use types in the past 20 years through runoff tests. The results showed that the effects of different land use types on slope erosion and sediment yield were in the order of slope farming area> standard area> economic forest area> forage area> arborous timber forest area> terrace area. Under different land use patterns, the most effective method to prevent soil erosion is terraced fields, while the amount of soil and water loss in the cultivated area along the slope is the largest. Slope erosion and sediment yield showed a power function relationship with rainfall erosivity, and the correlation reached a very significant level.