CONTRIBUTING RATIOS OF THE SLOPE SHAPE TOWARD THE LANDSLIDE DEVELOPMENT FROM YUNYANG TO WUSHAN IN THREE GORGES RESERVOIR AREA

This paper focuses on contributing ratios of the slope shape towards the landslide development.The slope shape data of landslides from the Yunyang to Wushan segment of the Three Gorges Reservoir area is analyzed with GIS information statistical methodologies.Five slope shape models were obtained.The contributing ratio is computed by dividing the contributing index of slope shape with the total contributing index of slope shape.It was concluded that the model IV contributes most to landslide development;models III and V contribute moderately;and models I II contribute little to landslide development.