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皖西山丘区系指安徽省西部的金寨县、霍山县,舒城县西南部分及六安县中、南部分。总面积8227.6平方公里,1982年水土流失调查,区域内不同程度的流失面积为4930.9平方公里,约占总面积的37%。每年流失泥砂总量970万立方米(折合1309.5万吨),年侵蚀深为1.18毫米,是安徽省水土流失重灾地区之一。本文根据水土流失初步凋查的成果,就皖西山区地貌、岩石、土壤、降雨强度等自然条件对水土流失的作用与影响,作一些粗浅的探讨。
Wanxi hills refers to the western part of Anhui Province Jinzhai County, Huoshan County, southwest part of Shucheng County and Lu’an County, south part. The total area of 8227.6 square kilometers, 1982, soil and water loss survey, the extent of the loss area of 4930.9 square kilometers, accounting for about 37% of the total area. Annual loss of sediment 9.7 million cubic meters (equivalent to 13.095 million tons), the annual erosion depth of 1.18 mm, is one of the areas harmed by soil erosion in Anhui Province. Based on the results of the preliminary investigation of soil erosion, this paper makes some superficial discussions on the effects and impacts of the natural conditions such as landforms, rocks, soil and rainfall intensity on soil erosion in western Anhui Province.