Object-based landslide detection in inclined bedding limestone area— A case study of Jiweishan landslide in Wulong, Chongqing

Remote sensing imageries with high resolution provide abundant information for landslide detection. It is vcry important for hazard investigation and mapping in limestorne area with complex landform. Object-oriented technology is one of these methodologics to extract thematic information from high solution remote sensing imageries. This paper takes Jiweishan limestone area as a case to detect landslide with object-oriented technology and change detection combined with analysis features of NDVI, NDGI, Lenth\Width and etc in ALOS images. Land cover change direciton is a sensitive way to detect presumable landslid. Landslid usually bring bare land and blocked land. Jiweishan is a typical landslide in inclined bedding limestorn area which can be well and truly detected in this method.