中山大学学报（自然科学版）2016，Vol.55Issue(6)：28-34,7.DOI:10.13471/j.cnki.acta.snus.2016.06.004
汉江上游汉中市洪水灾害风险评价研究
Flood hazard risk assessment of Hanzhong city at the upper reaches of Hanjiang River
摘要
Abstract
Based on GIS technology,the integrated assessment on flood risk in Hanzhong city in Shaanxi Province was carried out by using administrative county as basic assessment unit.Natural factors inclu-ding precipitation,precipitation variability,terrain elevation,slope and water system distribution were comprehensively considered in the flood hazard assessment.Socio-economic indicators including popula-tion density,annual grain output per unit area and GDP density were analyzed for the flood vulnerability assessment.A map of flood hazard assessment and a map of flood vulnerability assessment are constructed by combining with AHP and GIS technology.Then,superposition analysis method for flood hazard and vulnerability assessment was performed based on GIS technology,and the flood integrated risk assessment of Hanzhong city was obtained.The flood hazard risk of Hanzhong city was concentrated mainly in the Hanzhong basin and declined gradually from basin center to two sides around the main stream.The flood risk level is the highest in the southern part of Hanzhong,in the middle part of Chenggu county and in the northeastern part of Nanzheng county.The low level areas of flood disaster risk were Mian,Xixiang and Yang counties.Liuba county was the lowest in flood hazard risk.The assessment results are correspond-ing with the flood hazard occurrence in Hanzhong city in 2012,which can provide a scientific basis formaking reasonable flood control and mitigation planning in Hanzhong city.关键词
洪水灾害/风险评价/汉江上游/汉中市/陕西省Key words
flood hazard/risk assessment/the upper reaches of Hanjiang River/Hanzhong City/Shaanxi Province分类
大气科学引用本文复制引用
张国芳,查小春,石晓静,刘嘉慧,姬霖,王光朋..汉江上游汉中市洪水灾害风险评价研究[J].中山大学学报（自然科学版）,2016,55(6):28-34,7.基金项目
国家社会科学基金资助项目（14BZS070）；国家自然科学基金资助项目（71471071）；中央高校基本科研业务费专项基金资助项目 （）
