GIS-based hazard mapping and zonation of debris flows in Xiaojiang Basin,southwestern China |
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| Authors: | Y.?P.?He mailto:yp_he@imde.ac.cn" title=" yp_he@imde.ac.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,H.?Xie,P.?Cui,F.?Q.?Wei,D.?L.?Zhong,J.?S.?Gardner |
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| Affiliation: | (1) Chengdu Institute of Mountain Hazards and Environment, CAS, 610041 Chengdu, P.R. China;(2) Department of Geography and Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba, Canada |
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| Abstract: | ![]()
Debris flow sites were identified at 140 locations in the Xiaojiang Basin in Yunnan province, southwestern China. Their spatial distribution and catchment characteristics are described in detail on the basis of previous research, air photo interpretation, field investigation and mapping using Geographical Information Systems (GIS). Using a statistical approach, a quantitative model of hazards assessment and zonation was developed through synthesis analysis of basin areas, gradients, and the relative reliefs of these debris flow sites. In terms of debris flow hazard assessment, areas within the Xiaojiang Basin can be classified as severe, heavy and light hazard regions. |
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| Keywords: | Debris flow Hazard mapping Zonation Xiaojiang Basin Southwestern China |
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