摘要
泥石流危险度评价是泥石流灾害预测预报和减灾防灾工作中的重要内容和决策基础。以泸定县为例,利用RS、G IS技术,以流域范围为评价单元,选取影响泥石流发育和形成的因子,采用数理统计方法和层次分析法得出各因子对泥石流的敏感系数和权重,最后建立县级区域泥石流危险度多因子综合评价模型,从而实现区域泥石流危险度评价。
Debris flow hazard zonation is an important Luding part of debris flow prediction and mitigation. Taking County as an example, in the unit of river basin, the factors affecting the formation and development of debris flow are selected by use of RS and GIS technology. The sensitivity coefficient and weight of each factor to debris-flow are obtained by using mathematical statistics method and analytic hierarchy process. Then multi-factor synthetic zonation model for debris flow hazard assessment in the area at county level so as to realize regional debris flow hazard assessment.
出处
《灾害学》
CSCD
2008年第2期71-75,共5页
Journal of Catastrophology
基金
四川省国土资源厅2005年县(市、区)地质灾害调查项目([2005]1406)资助
关键词
泥石流
危险区划
RS
GIS
敏感性
四川泸定
debris flow
hazard zonation
remote sensing
geographical information system
sensitivity
Luding county of Sichuan
