REMOTE SENSING FOR LANDSLIDES IN CHINA

Remote sensing for landslides in China as a main means for regional landslide investigation has a history of more than 20 years, and has made important contributions to survey, mitigation and prevention of landslide disasters in large-scale engineering construction of mountainous areas. With the adoption of "digital landslide" technique and high resolution remote sensing data since the end of the 20th Century, Remote sensing for landslides has acquired the capacity for more exact qualitative and quantitative landslide survey, even for detailed survey and monitoring of large-size independent landslides. The realization of"digital landslide"technique depends on the support of remote sensing, digital photogrammetry and image-processing, GIS and computer technique. The"digital landslide"technique can be divided into three parts, i.e., acquisition of basic landslide information, information storage and management, and thematic service technique. With Tiantaixiang landslide, Three Gorges area, Jinglong Mountain landslide remote sensing investigation and Yigong landslide remote sensing monitoring as examples, this paper deals with the thematic service technique of "digital landslide".