山东农业科学2017，Vol.49Issue(6)：88-94,7.DOI:10.14083/j.issn.1001-4942.2017.06.019
基于GIS的汉江上游安康市洪水灾害风险评价
Flood Disaster Risk Assessment of Ankang City in Upper Reaches of Hanjiang River Based on GIS
摘要
Abstract
The flood disaster has occurred frequently with serious losses in Ankang City, which locates in Qinba mountain areas in the upper reaches of Hanjiang River.According to the theory of flood disaster system, based on GIS and AHP, the flood disaster risk assessment on Ankang City was studied from the hazard and vulnerability of flood disaster.The natural factor indexes, including annual rainfall and precipitation variability in nearly 50 years, terrain elevation, slope and water system of Ankang City, were considered to analyze the flood hazard.The economic indicators, such as population density, GDP density and annual grain output per unit area, were selected to analyze the flood vulnerability.Then the AHP method was used to compute the weights of evaluation indexes,and the grid of ArcGIS was used to overlay the hazard and vulnerability of flood disaster.The results of flood disaster risk assessment for Ankang City was obtained.The results showed that the flood disaster risk of Ankang City concentrated mainly along the Hanjiang River, and decreased generally from the main stream to the branches.The results were in consistent with the "7.18" flood events in 2010, which showed the feasibility of the evaluation method.Meanwhile, the results could provide an important scientific basis for the reasonable flood control and disaster mitigation planning for Ankang City.关键词
安康市/汉江上游/洪水灾害/风险评价/GIS/层次分析法Key words
Ankang city/Upper reaches of Hanjiang River/Flood disaster/Risk assessment/GIS/AHP分类
农业科技引用本文复制引用
石晓静,查小春,郭永强,石彬楠..基于GIS的汉江上游安康市洪水灾害风险评价[J].山东农业科学,2017,49(6):88-94,7.基金项目
国家自然科学基金项目(71471071) （71471071）
国家社会科学基金项目(14BZS070) （14BZS070）
中央高校基本科研业务费专项资金项目(GK201601006) （GK201601006）
