MOUNTAIN NATURAL HAZARDS DOMINATED (MAINLY DEBRIS FLOW) AND THEIR PREVENTION
山地自然灾害（以泥石流为主）及其防治

China is a country with serious mountain natural hazards, especially debris flow and landslide. Since 1980's, the frequent occurrences of mountain hazards such as debris and landslide have made an economic loss of more than 3 billion yuan. This paper analyzes the cause,, characteristics of distribution as well as forecast and prevention of the mountain natural hazards.