人民长江2016，Vol.47Issue(14)：1-6,6.DOI:10.16232/j.cnki.1001-4179.2016.14.001
长江流域不同类型山洪灾害受自然因素影响分析
Analysis on influence of natural factors on different types of mountain torrent hazards in Yangtze River Basin
摘要
Abstract
The quantitative analysis of influence of natural factors on mountain torrent hazards can provide scientific reference to the integrated disaster prevention and control .Through qualitative study of the influential natural factors , the main controlling factors on the mountain torrent hazards were recognized by principal component analysis with a small watershed as evaluation unit . The single factor and multi-factor statistical analysis are used to analyze the correlations between the natural factors and the vari -ous types of mountain torrent hazards .The results show that the main controlling factors on both stream flood and landslide are the rainfall factors (maximum 6h rainfall and annual average heavy rain days ), and the debris flow is controlled by maximum 6h rainfall and vegetation index .The correlation analysis results show that the influences of natural factors on different types of mountain torrent hazards are nonlinear , and the interactions of different factors are significant .关键词
主成分分析法/山洪灾害/长江流域Key words
debris flow/principal component analysis/nonlinear/landslide/stream flood分类
天文与地球科学引用本文复制引用
孙莉英,葛浩,庞占龙,余新晓,蔡强国..长江流域不同类型山洪灾害受自然因素影响分析[J].人民长江,2016,47(14):1-6,6.基金项目
国家自然科学基金项目（41471229；41271304）；水利部公益性行业科研专项经费资助项目 （）
