基于GIS的阜阳市洪灾风险评价
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摘要
本文利用ArcGIS软件,按照灾害风险的成因分类把风险评价分为社会经济的易损性分析和自然条件的危险性分析,并确定人口密度、GDP密度、耕地面积比、降水、水系、地形6个评价因子,借助层次分析法确定各个因子权重,通过GIS空间叠加分析功能构建阜阳市洪灾综合风险评价模型,最终结果表明:洪灾风险性较高的地区为颍上县、阜阳市东南部分和阜南县的部分;洪灾风险性中等的区域为阜阳市西北部分、临泉县水系河流的缓冲区附近部分;较低的风险区为临泉县界首市和太和县的部分区域。该研究结论可以作为阜阳的防灾减灾工作的参考。
In this paper, based on the ArcGIS software, according to the causes of disaster risk classification, risk assessment is divided into socio-economic vulnerability analysis and risk analysis of natural conditions, with the help of GIS spatial overlay analysis function to build Fuyang flood comprehensive risk assessment model, and Fuyang flood risk classification evaluation and analysis, Fuyang flood disaster risk level is divided into low, lower, medium, higher. The final results show that the areas with high flood risk are Yingshang county, and the southeast part of Fuyang city and part of Funan county. The area with moderate flood risk is the northwest part of Fuyang city and the part near the buffer zone of river system in Linquan county. The lower risk areas are part of Linquan county, Jieshou city and Taihe county. The results of flood disaster risk assessment can be used as a reference for disaster prevention and mitigation in Fuyang.
In this paper, based on the ArcGIS software, according to the causes of disaster risk classification, risk assessment is divided into socio-economic vulnerability analysis and risk analysis of natural conditions, with the help of GIS spatial overlay analysis function to build Fuyang flood comprehensive risk assessment model, and Fuyang flood risk classification evaluation and analysis, Fuyang flood disaster risk level is divided into low, lower, medium, higher. The final results show that the areas with high flood risk are Yingshang county, and the southeast part of Fuyang city and part of Funan county. The area with moderate flood risk is the northwest part of Fuyang city and the part near the buffer zone of river system in Linquan county. The lower risk areas are part of Linquan county, Jieshou city and Taihe county. The results of flood disaster risk assessment can be used as a reference for disaster prevention and mitigation in Fuyang.
引文
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[2]吴婧,翟国方,何仲禹,等.基于GIS的汕头市洪涝灾害风险评估[C]//风险分析和危机反应中的信息技术-中国灾害防御协会风险分析专业委员会第六届年会论文集,2014:359-359.
[3]麻荣永,张东龙.南宁市洪涝灾害风险评价[J].自然灾害学报,2017,26(3):200-206.
[4]王雪臣,冷春香,冯相昭,等.长江中游地区洪涝灾害风险分析[J].科技导报,2008,26(2):61-66.
[5]刘家福,李京,刘荆,等.基于GIS/AHP集成的洪水灾害综合风险评价--以淮河流域为例[J].自然灾害学报,2008,17(6):110-114.
[6]李景宜.流域生态风险评价与洪水资源化:以陕西省渭河流域为例[M].北京:北京师范大学,2008.15-16.
[7]董君.层次分析法权重计算方法分析及其应用研究[J].科技资讯,2015,13(29):218,220.
[8]姜蓝齐,马艳敏,张丽娟,等.基于GIS的黑龙江省洪涝灾害风险评估与区划[J].自然灾害学报,2013,22(5):238-246.
[9]赵霞,王平,龚亚丽,等.基于GIS的内蒙古中部区域洪水灾害风险评价[J].北京师范大学学报(自然科学版),2007,43(6):666-669.
[10]刘德林.基于GIS的河南省洪灾风险评价[J].水土保持通报,2014,34(3):126-129.
[11]麻荣永,易云梅,李茳.基于GIS的广西桂林市城区洪水灾害风险评价[J].红水河,2016,35(5):1-5.