Global Geology     2009 12 (1):  40-45    ISSN: 1673-9736:  CN: 22-1371/P

Application of extension theory in risk zoning of debris flow in Beijing
BAI Liping1, 2 , WANG Yeyao2 , SUN Jiali3 and GONG Bin2
1. College of Water Sciences, Beijing Normal University, Beijing 100875, China; 2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 3. Beijing Institute of Geology, Beijing 100011, China
Received null  Revised null  Online 2009-03-25
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