Landslide Hazard Assessment in the Northern Mountainous Areas of Tianshan Mountains Based on GIS

China is a country prone to geological disasters, especially in the northern mountainous areas of Tianshan Mountains Xinjiang, where surface vegetation sparse and rainfall concentrated, which landslides brings lot losses local people. Based on field investigation, this paper evaluates landslide susceptibility area Mountains. The frequency ratio method used calculate probability, index (LSI) formed represent susceptibility. slope unit determine units, values were calculated by average index. According LSI range 4.53 - 20.60. It divided into 4 grades, = 9, an that not landslides, with 891.69 km2. 9 11 indicates are more likely occur, 1252.31 13 714.86 > most for 924.60