灾害学Issue(4)：64-68,5.DOI:10.3969/j.issn.1000-811X.2015.04.013
基于敏感指数主成分分析法的浙江沿海突发性地质灾害易发区评价
Evaluation of the Unexpected Geological Disasters Distributions in Coastal Region of Zhejiang Province Base on Sensitivity Coefficient and Principal Component Analysis
摘要
Abstract
The Marine Economy Demonstration Area of Zhejiang Qrovince is very important on economic sta-tus.Geological hazards of collapse,landslide,debris flow and so on are factors which threaten the social economic development.In this paper,we calculate the sensitive coefficient based on historical hazard and slope,aspect,ge-ological,lithology,rainfall zoning and vegetative cover etc.To obtain comprehensive area index of each evaluation grid,the principal component analysis method is used to gain the comprehensive score of grid which indicate the vulnerability of the certain grid.Finally,we use the method on the typical regional geological disaster areas as an example and divide four grades according to the score results.The results are benefit to the regional geological dis-aster prevention and engineering activities.关键词
敏感指数/主成分分析/地质灾害/易发区评价/浙江沿海地区Key words
sensitivity coefficient/principal component analysis/geological hazard/prone area evaluation/coastal region of Zhejiang province分类
生物科学引用本文复制引用
余丰华,刘正华,夏跃珍,张达政,佘恬钰..基于敏感指数主成分分析法的浙江沿海突发性地质灾害易发区评价[J].灾害学,2015,(4):64-68,5.基金项目
中国地调局南京地调中心项目浙江海洋经济发展示范区地质环境调查评价 （）
