水土保持通报2017，Vol.37Issue(2)：278-283,288,7.DOI:10.13961/j.cnki.stbctb.2017.02.042
四川省雅安市泥石流灾害危险性评价
Evaluation of Debris Flow Hazard in Ya'an City of Sichuan Province
摘要
Abstract
[Objective] The risk of debris flow in Ya'an City was evaluated to provide scientific basis for predicting and dealing with debris flow scientifically and reasonably.[Methods] Firstly,a quantitative-hierarchy factors assessing system,including nine factors of three categories,was established.The factors were weighted by method of analytic hierarchy process(AHP).Finally,assessment model of hazard was applied to the spatial overlay analysis and took debris flow hazard division in Ya'an City.The division map of debris flow hazard included low-risk zone(Ⅰ),risk zone(Ⅱ),high-risk zone(Ⅲ)and higher-risk zone(Ⅳ).[Results] Baoxing county had the lowest risk,only 8.8％ was covered by Ⅳ zone.Risk of debris flow in Tianquan County was determined as fairly low as well.About 20.0％ of Yucheng,Lushan,Mingshan County are covered by Ⅳ zone,and the two counties have moderate level risk.Risk of debris flow in Yingjing and Hanyuan County is fairly high,Ⅳ zone covered 45.0 ％ approximately.The debris flow risk in Shimian County hits the top.The percent of Ⅳ going up to 57.4％,and the percent of Ⅲll up to 24.4％.[Conclusion] The capacity of debris flow disaster should be enhanced in prevention of Ⅳ grade risk,be alert to the potential danger in Ⅲ.The measures have monitoring,weather forecast,tree and grass plantation.关键词
泥石流危险性评价/雅安市/评价因子/量化分级/危险度区划Key words
debris flow hazard analyzing/Ya'an City/assessing factors/hazard zoning分类
天文与地球科学引用本文复制引用
李鑫杨,刘庆生,白淑英..四川省雅安市泥石流灾害危险性评价[J].水土保持通报,2017,37(2):278-283,288,7.基金项目
中国科学院战略性先导科技专项:基础数据库建设专题(XDA05050601) （XDA05050601）
中国科学院资源与环境信息系统国家重点实验室自主研究项目(08R8A010YA) （08R8A010YA）
