中文摘要：

以三峡库区重庆段为研究区域，以景观生态学原理为基础，将地理信息系统技术与传统的数量生态学方法（双向指标种分析与除趋势典范对应分析）相结合，对研究区的土壤侵蚀组成、强度、空间格局进行分析；对22个区县进行土地利用景观破碎化分类；对土壤侵蚀与土地利用景观破碎化的内在联系进行了评价。主要结果如下：（1）三峡库区（重庆）以微度侵蚀和中度侵蚀为主；耕地上的土壤侵蚀强度最高，林地、水体和未利用地上侵蚀强度较低；研究区下游和近中游地区土壤侵蚀明显高于上游地区。（2）根据其空间位置，22个区县从东往西划分为农草破碎区、林地破碎区和建水破碎区3个土地利用景观高破碎区域，且土壤侵蚀等级从东向西依次减弱。（3）较强的土壤侵蚀等级能够增加土地利用景观破碎化，但是其加剧土地利用景观破碎化的强度同土壤侵蚀等级呈相反趋势（如：强度侵蚀最高，极强度侵蚀其次，剧烈侵蚀低于前两者）。

英文摘要：

Based on the principles of landscape ecology, the Chongqing Section of the Three Gorges Reservoir Region was studied and analyzed for composition, intensity and spatial distribution of soil erosion, using the AreGIS 9.3 soft- ware and the Two-way indicator species analysis （TWINSPAN） and Detrended canonial correspondence analysis （DCCA） technique. In addition, the lands of the 22 districts and counties under Chongqing were classified according to fragmentation degrees of their landuse landscape, and the relations between the landscape fragmentation and the soil erosion were evaluated. Results show that light and moderate erosions were the main types in the study area. Farmlands were the highest in soil erosion intensity, woodlands, waterbodies and virgin lands were relatively lower, and the lower and middle reaches of the area were significantly higher than the upper reaches. Spatially, the 22 districts and counties could be ruled into three highly fragmented landuse landscape zones, i. e. agriculture-grassland zone, woodland zone and construction-land- waterbody zone, lined and decreased in soil erosion intensity from east to west. And higher grades of soil erosion intensified land-use landscape fragmentation, but when soil erosion reached its extremity, this effect of intensification showed a reverse trend, i. e. intensive soil erosion 〉 highly intensive soil erosion 〉 extremely intensive soil erosion.