Abstract:

RS and GIS are a helpful tool to measure the soil erosion, to quickly monitor the dynamic changes in soil erosion distribution and extent. This paper, based on a case study of the upstream of Fenhe Reservoir in Yellow River, applies the Remote Sensing data of Landsat MSS (1976), TM (1990) and ETM+ (2002) to dynamically monitor the land erosion with the results indicating that the soil has been eroded extensively during 1976 to 1990, and turned to a good condition in general during 1990 to 2002, but still worsening locally. It is a big task to maintain the water and soil.

Key words:

RS; GIS; land erosion; dynamic monitoring; upstream of Fenhe Reservoir

摘要：

RS和GIS技术是开展土壤侵蚀研究的有效工具，可以对土壤侵蚀分布与强度的动态变化进行快速监测。以黄河流域汾河水库上游为研究区域，利用Landsat MSS（1976年）、TM（1990年）、ETM+（2002年）三期遥感数据，综合运用RS和GIS技术，对研究区的土壤侵蚀状况进行动态监测。研究结果表明：1976—1990年，研究区土壤侵蚀程度加剧；1990—2002年，土壤侵蚀状况整体好转，局部区域仍在发展，水土保持任务仍很艰巨。

关键词: RS；GIS；土壤侵蚀；动态监测；汾河水库上游