ASSESSMENT ON THE REGIONALIZATION OF HAZARD DEGREE OF SANDY DESERTIFICATION DISASTER IN NORTHERN CHINA
Dong Yuxiang(Dept. of Urban and Resources Planning, Zhongshan Univ., Guangzhou,510275))
Sandy desertification disaster is one of the most improtant disasters in the world. Assessment on the regionalization of its hazard degree has very important significances in theory and practice. This paper, judging by the basis and rules of regionalization assessment of hazard degree of sandy desertification disaster, gives its assessment criteria system, establishes the quantitative assessment model and uses this model to regionalize the hazard degree of sandy desertification disaster in northern China. In the result, it is regionalized into 15 hazard degree regions, which include 6 slight regions, 5 moderate regions and 4 severe regions. At last, basic conditions of every hazard degree region are briefly analysed.