云南水土流失态势、分区与区域特征研究  

Soil-Water Loss Subareas and Regional Characteristics and Development in Yunnan Province

作　　者：万晔[1] 韩添丁[2] 段昌群[1] 史正涛[3] 司徒群[4] 王健萍[4] 

机构地区：[1]云南大学生命科学学院,云南昆明650091 [2]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 [3]云南师范大学,云南昆明650042 [4]云南大学资源环境与地球科学学院,云南昆明650223

出　　处：《中国沙漠》2005年第3期442-447,共6页Journal of Desert Research

基　　金：国家攀登计划项目(2000026);中国科学院知识创新工程重要方向项目(KZCX3SW345);云南省自然科学基金项目(2002C0015R);云南省社会科学基金项目(K6050016)共同资助

摘　　要：水土流失分区是水土流失研究和水土保持管理的重要组成部分。笔者从云南省水土流失的基本情况分析入手,首先分析对比了1987年和1999年全省和六大流域水土流失的演变态势及其各侵蚀强度面积所占百分比,再以各区域不同的自然地理尤其是地貌、植被覆盖特点和陡坡耕地占耕地总面积的比例及所在区域农业人口密度,把全省分为7个水土流失自然区,并对每个自然区的水土流失现状、特点、趋势进行了分析。该研究对区域水土保持、生态环境建设和区域可持续发展有重要意义。Dividing of soil-water erosive area is the main part in research on soil-water erosion and its conservation management. Starting from the basic condition analysis of soil-water erosion, the authors firstly compared the status of soil-water erosion of the six large basins in Yunnan province and analyzed its development from 1987 to 1999; then the areas of soil-water erosion under different erosion intensities were calculated. In combination with the physical geography characteristics especially landforms, vegetation cover characteristics, the proportion of steep farmland from total cultivated lands and the agricultural population densities of research areas, the authors divided Yunnan province into seven natural subareas of soil-water erosion. Further, the authors had analyzed the regional present situations, characters and tendencies of soil-water erosion.

关 键 词：水土流失 云南 水土保持 侵蚀强度面积 生态环境 区域可持续发展 

分 类 号：S157.1[农业科学—土壤学]