关键词: 水土流失, 态势, 分区, 区域特征, 云南省

Abstract: 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.

Key words: water and soil loss, status, regionalization, regional characteristics, Yunnan province