WebGIS for monitoring soil erosion in Miyun reservoir area

Miyun reservoir is an important water supplier of Beijing, China, therefore soil erosion of this area is very critical and must be paid sufficient attention. To monitor and manage soil erosion information in Miyun reservoir area, a monitoring information system that is dynamic, interactive and Internet-based was developed. The paper describes how the WebGIS application was developed, implemented and used. The overall monitoring information system is multi-scale, multi-source, flexible and geographically organized. It uses an Internet-based GIS ("WebGIS") technology, and has obtained information about soil erosion in Miyun reservoir area through four methods: RUSLE model, TM images visual interpretation, model based on vegetation cover and slope, and data fusion of three results. The decision-making officers can access and analyze these data more effectively and conveniently via the Internet