摘要
在全面搜集相关资料的基础上,对吉林省泥石流灾害进行综合分析和总结,在ARCGIS平台下分析泥石流灾害的发育分布规律、发育特征及其主要孕灾因子与灾害点分布关系。经统计、分析发现,吉林省泥石流形成与地貌类型、坡度、地势高程、岩组、年平均降水量、人口密集度、植被覆盖率等7个因子有显著关系。采用粗糙集理论对孕灾因子权重进行分析,坡度、地势高程、人口密集度等因素对泥石流影响较显著,结果与实地灾情吻合。
On the basis of fully collecting relevant data,this paper has made a comprehensive analysis and summary to debris flow disasters in Jilin province China.The relations of disaster area distribution and debris flow disasters development distribution,characteristics and the main influence factors have been analyzed on ARCGIS platform.Through the statistics and analysis,it founds the developmental characteristics and the relationship between the distribution of main prophylactic factors and disaster points.The debris flow formation have a significant relationship with seven factors such as landscape,the slope,ground elevation,rock and soil type,annual rainfall,population density,vegetation coverage.This paper uses Rough Set Theory to analysis the importance of the evaluation index and finds that the influence of factors such as slope,terrain elevation,population density is more sensitive on the debris flow.The results of the test are consistent with the development characteristics of real disaster.
出处
《长春工程学院学报（自然科学版）》
2018年第2期70-74,共5页
Journal of Changchun Institute of Technology：Natural Sciences Edition
基金
国家自然科学基金项目(41505146)
吉林省科技厅重大科技攻关项目(20170204035SF)
关键词
泥石流
孕灾因子
粗糙集
ARCGIS
debris flow
underlying disaster factors
rough set theory
ARCGIS
