Abstract: Landslides can be affected by a series of environmental factors.The present study aimed to analyze landslide susceptibility in the Qingganhe River of Three Gorges area in China.Spatial information techniques,including RS and GIS with an innovative data mining approach,namely,the rough sets theory,are incorporated to the study for landslide factors analysis.In a case study,the cores(i.e.,slope,elevation,slope type,vegetation index,and rock type) and reductions of the data attributes were obtained...