Natural disaster and its prevention in the North Tibet——a case study of Baqing County-Suoxian County

Located in the wing of Tanggula Mountain and in the east of Naqu region, Baqing-Suoxian is plateau of Qinghai-Tibetan Plateau. It is very cold, lacking oxygen, inconvenience traffic and frangible environment in this area. On the basis of datum of regional geology survey, natural disasters in the range of 15635km~2 research area can be divided into 11 types. Ochotona uraoniae disaster, grass degradation, wind, thunderstorm and hail are pervasive disaster types in Baqing-Suoxian area. Soil salinization, desertification, and water salinization are especially serious in the north of Tanggula Mountain. Snow disaster, snowslip are mainly on Tanggula Mountain and its southern region. Flood disaster and debris flow occur frequently at the alp coulee area in the North of Tibet. Analyzing the formation factors synthetically, this paper indicates that evolution trend of the natural disaster is not optimistic. The urgent tasks are to adopt available measures and policies to prevent the disasters, to change passivity into initiative, to set up a special institution as early as possible to carry through the investigation for the natural disaster completely and deeply. We should adopt suitable measures of prevention and cure to different types of disaster, in order to minimize the loss of the natural disaster.