基于RS和GIS的成都市多种灾害综合风险评估  

Comprehensive Risk Assessment of Multiple Hazards in Chengdu Based on RS

作　　者：卢学辉 韩超 张庆宇 许小龙 金缘 LU Xuehui;HAN Chao;ZHANG Qingyu;XU Xiaolong;JIN Yuan(Institute of Chengdu Urban Safety and Emergency Management,Chengdu 610011,China;Chongqing Vocational Institute of)

机构地区：[1]成都市城市安全与应急管理研究院,成都610011 [2]重庆工程职业技术学院,重庆402260

出　　处：《三峡生态环境监测》2024年第3期49-61,共13页Ecology and Environmental Monitoring of Three Gorges

基　　金：成都市应急管理局项目(510101202200152)。

摘　　要：成都市作为我国西南地区人口聚集区和社会经济发展的战略中心之一,多种自然灾害频发,亟待开展成都市多灾害综合风险评估研究。本文综合考虑成都市面临的主要灾害问题,采用遥感与地理信息系统技术,分别评估了成都市地质灾害风险、森林火灾风险和洪涝灾害风险。此外,采用地理加权主成分分析方法进行局部赋权获取3种灾害的综合风险。结果表明:地质灾害的高风险区主要分布在彭州市和都江堰市,面积分别为14.82 km^(2)和4.72 km^(2);森林火灾的中高和高风险区基本与森林分布一致,基本分布在整个研究区的山地,分别占整个研究区的18.33%和10.59%;洪涝灾害风险区主要分布在河流周围,高风险区主要分布在都江堰市(1.54 km^(2))和龙泉驿区(1.10 km^(2));多种灾害的风险分布与地质灾害和森林火灾风险的分布相关性较高,高风险区主要分布在彭州市和都江堰市。研究结果指出,多部门合作和分时段管理将大大有利于成都市灾害风险防控。Chengdu,as a high population density area and one of the strategic centers of social and economic development in southwest China,and often suffers from a variety of natural disasters.Therefore,it is urgent to carry out a comprehensive risk assessment of multiple natural hazards in Chengdu.Given the main disasters faced in Chengdu,this study usesd remote sensing and geographic information technology to evaluate the risks of geological disaster,forest fire,and flood disaster,respectively.Furthermore,the geographical weighted principal component analysis method was used to obtain the comprehensive risk of the three natural hazards.Results reveal that the geological disasters of high risk level is mainly located in Pengzhou and Dujiangyan,with the area of 14.82 km?and 4.72 km^(2),respectively.The heavy and high risk areas of forest fires are basically the same as the distribution of forest area,mainly distributed in the mountainous areas,accounting for 18.33%and 10.59%of the whole study area,respectively.Flood disaster risk areas are mainly distributed in the areas around rivers,and high risk areas are mainly concentrated in Dujiangyan(1.54 km^(2))and Longquanyi(1.10 km^(2)).The spatial distribution of multiple disasters risk is highly correlated with the risks of geological disasters and forest fire,and the high risk areas are mainly distributed in Pengzhou and Dujiangyan.The results indicate that multi-department cooperation and time-sharing management will greatly benefit disaster risk prevention and control in Chengdu.

关 键 词：地质灾害 森林火灾 洪涝灾害 综合风险 成都市 

分 类 号：P9[天文地球—自然地理学]