水资源与水工程学报2024，Vol.35Issue(1)：26-36,11.DOI:10.11705/j.issn.1672-643X.2024.01.04
基于四维度模型的湖南省湘江流域洪涝灾害风险评估
Assessment of flood disaster risk based on a four-dimensional model in Hunan section of the Xiangjiang River Basin
摘要
Abstract
The frequent recurrence of climatic extreme events and the sharp increase in the frequency and intensity of precipitation have increased the risk of coastal flooding.To reduce regional flood risks,we analyzed the formation mechanism of flood risk in four dimensions:risk of contributing factors,sensitivity of breeding environment,vulnerability of hazard-bearing bodies and disaster prevention and mitigation ca-pacity.Based on 11 indicies,the ArcGIS and entropy method were used to evaluate the flood risks in Hu-nan section of the Xiangjiang River Basin,then the final flood risk map was produced at the district and county scale.The results show that the risk of contributing factors is low in the central and western parts of the Xiangjiang River Basin,while the sensitivity of breeding environment in the central part is high;the vulnerability of hazard-bearing bodies is relatively high in the Changzhutan Rim and Hengyang City,but the former has a relatively high disaster prevention and mitigation capacity due to its good economic foundation;the distribution of flood risk in the Xiangjiang River Basin increases from northeast to south-west,with high flood risk areas in Changsha City,Yiyang City,Hengyang City and southern Yongzhou City.The different dominant factors in different regions reflect the differences in flood risks under the effect of multiple factors,the research results can provide a technical support for regional flood prevention and mitigation.关键词
洪涝灾害/风险评估/ArcGIS/熵权法/四维度模型/湖南省湘江流域Key words
flood disaster/risk assessment/ArcGIS/entropy method/four-dimensional model/Hunan section of the Xiangjiang River Basin分类
建筑与水利引用本文复制引用
杨柳,冯畅,郭哿,彭璐璐,项瑾..基于四维度模型的湖南省湘江流域洪涝灾害风险评估[J].水资源与水工程学报,2024,35(1):26-36,11.基金项目
国家自然科学基金项目(41901026、42001024) （41901026、42001024）
湖南省自然科学基金项目(2022JJ40015、2021JJ40011) （2022JJ40015、2021JJ40011）
湖南省教育厅科学研究项目青年项目(21B0625、21B0646) （21B0625、21B0646）
湖南省研究生科研创新项目(CX20221271) （CX20221271）
