Taking Meishan City of Sichuan Province as an example,aiming at the water and soil erosion,the bio-diversity and the land use actuality,the ecosensitivity was evaluated by using GIS spatial analysis technique and ecological factor scoring method.The comprehensive analysis was made by using multifactor weighted summation model.The results showed that the proportion of extremely sensitive area,high sensitive area,medium sensitive area and slight sensitive area in total area of Meishan City were 15.83%,17.22%,...