关键词: 内蒙古牧区, 旱灾, 风险区划

Abstract:

The 51 animal husbandry banners/counties of Inner Mongolia were taken as study area, and  drought disaster occurring frequently there was chosen as the research object in this paper. Started with four aspects including the risk of factors causing drought disaster, the sensitivity of disaster environment, vulnerability of hazard-affected body and the ability of disaster prevention and mitigation, the risk assessment indicators and their weights were determined by using expert scoring method, entropy weight coefficient method and analytic hierarchy, and drought disaster risk assessment model was established with the help of GIS technology, finally, the drought disaster risk zoning work in pastoral areas of Inner Mongolia was completed. The results show that the high risk areas in pastoral area of Inner Mongolia presented zonal distribution, which mainly concentrated in the regions along the Helan Mountain, the Yinshan Mountain and the south part of Greater Khingan range, including the central and northeastern parts of Erdos, the part of northern Bayan Nur, the central of Baotou, the central of Hohhot, the central of Wulanchabu, the south part of Xilinguole, the northern of Chifeng, and the northwest area of Tongliao, where there are the same features of high elevation, terrain dominated by middle and low hills, high risk of factors causing disaster, high sensitivity of disaster environment, and high vulnerability of hazard-affected body.

Key words: pastoral area of Inner Mongolia, drought, risk zoning