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安徽省境内的大别山区,地跨六安、安庆两个地区,总面积约1.5万平方公里。地处北亚热带气候区,夏季受东南季风影响,雨量充沛,生境良好。但由于受历史的、人为的因素影响,水土流失十分严重。 一、水土流失现状与危害 据初步统计,安徽境内的大别山区水土流失面积达9520平方公里,土壤流失总量2726.5万吨,年侵蚀模数为2864吨/平方公里。其中强度侵蚀1640平方公里,年侵蚀模数达5000吨/平方公里以上。据舒城县调查,受侵蚀的粗骨型山地土壤面积达1102300亩,
Dabie Mountain in Anhui Province, across the Lu’an, Anqing two areas, with a total area of about 15,000 square kilometers. Located in the northern subtropical climate zone, summer monsoon affected by the southeast, abundant rainfall, habitat good. However, due to historical and man-made factors, soil erosion is very serious. I. Present Situation and Harm of Soil and Water Loss According to preliminary statistics, the area of soil and water loss in Dabie Mountain in Anhui Province reaches 9,520 square kilometers, with a total soil loss of 27,265,000 tons and an annual erosion modulus of 2,864 tons per square kilometer. Among them, the intensity of erosion of 1640 square kilometers, annual erosion modulus of 5,000 tons / square kilometer or more. According to Shucheng County survey, the erosion of coarse-bodied mountain soil area of 1102300 acres,