A STUDY ON SOIL EROSION AND LAND USE PLANNING WITH REMOTE SENSING IN THE HILL AND GULLY REGION OF THE LOESS PLATEAU--A Case Study in Mizhi County, Shanxi Province
黄土高原丘陵沟壑区土壤侵蚀遥感定量与信息系统研究——以陕西米脂县为例

On the basis of a survey of soil erosion and land use with remote sensing, severe accelerated erosion is considered to be the primary cause of poor agricultural ecnomical condition in the hill and gully region of the Loess Plateau. It is a result of intensive cultivation and unreasonable land use. Both of these two have a long history. This paper tries to introduce a methodology of quantitative analysis of soil erosion with remote sensing information. Small watershed is taken as the study unit of the erosion system. Thus, two mathematical erosion models which predict the sheet erosion, the rill erosion and the sediment yield of small watershed are developed, according to systematical experimental data and field survey results as well as remote sensing data. Finally, the principles of Soil Erosion Information System (SEIS) are discussed. They are used for dynamically monitoring soil erosion, land use planning and soil conservation.