| Distribution Regularity of Debris Flow and Its Hazard in Upper Reaches of Yangtze River and Other Rivers of Southwestern China |
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| 作者姓名： | WEI Fangqiang JIANG Yuhong CUI Peng DING Mingtao |
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| 作者单位： | Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences / Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China |
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| 基金项目： | Supported by the Knowledge Innovation Program of Chinese Academy of Sciences （KZCX-SW-352） |
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| 摘 要： | In the upper reaches of Yangtze River and other rivers of southwestern China, the debris flows develop and lead to most serious disasters because of the various landforms, complex geological structures and abundant rainfall. The distribution of debris flows has regularity in the regions with different landform, geological structure, and precipitation. The regularities of distribution of debris flows are as following： （1） distributed in transition belts of different morphologic regions; （2） distributed in the area with strong stream trenching; （3） distributed along fracture zones and seismic belts： （4） distributed in the area with abundant precipitation; （5） distribution of debris flow is azonal. The activity of abundant debris flows not only brings harm to Towns, Villages and Farmlands, Main Lines of Communication, Water-Power Engineering, Stream Channels etc., but also induces strong water and soil loss. According to the present status of debris flow prevention, the problems in disasters mitigation and soil conservancy are found out, and the key works are brought up for the future disasters prevention and soil conservancy.
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| 关 键 词： | 泥石流 长江上游 中国 水土流失 危害 |
| 文章编号： | 1007-1202（2007）04-0619-08 |
| 收稿时间： | 11 September 2006 |
| 修稿时间： | 2006-09-11 |
Distribution regularity of debris flow and its hazard in upper reaches of Yangtze River and other rivers of southwestern China |
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| WEI Fangqiang JIANG Yuhong CUI Peng DING Mingtao.Distribution Regularity of Debris Flow and Its Hazard in Upper Reaches of Yangtze River and Other Rivers of Southwestern China[J].Wuhan University Journal of Natural Sciences,2007,12(4):619-626. |
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| Authors: | Wei Fangqiang Jiang Yuhong Cui Peng Ding Mingtao |
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| Institution: | (1) Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu, 610041, Sichuan, China;(2) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, Sichuan, China |
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| Abstract: | In the upper reaches of Yangtze River and other rivers of southwestern China, the debris flows develop and lead to most serious
disasters because of the various landforms, complex geological structures and abundant rainfall. The distribution of debris
flows has regularity in the regions with different landform, geological structure, and precipitation. The regularities of
distribution of debris flows are as following: ① distributed in transition belts of different morphologic regions; ② distributed
in the area with strong stream trenching; ③ distributed along fracture zones and seismic belts: ④ distributed in the area
with abundant precipitation; ⑤ distribution of debris flow is azonal. The activity of abundant debris flows not only brings
harm to Towns, Villages and Farmlands, Main Lines of Communication, Water-Power Engineering, Stream Channels etc., but also
induces strong water and soil loss. According to the present status of debris flow prevention, the problems in disasters mitigation
and soil conservancy are found out, and the key works are brought up for the future disasters prevention and soil conservancy.
Biography: WEI Fangqiang(1968–), Professor, Ph. D., research direction: the theory and technology of mountain hazards mitigation. |
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| Keywords: | upper reaches of Yangtze River southwestern China debris flow water and soil loss distribution and hazards of debris flow |
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