Risk Evaluation of Flood Disasters in Henan Province Based on GIS

LIU De-lin

doi:10.13961/j.cnki.stbctb.2014.03.024

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Risk Evaluation of Flood Disasters in Henan Province Based on GIS

- Risk Evaluation of Flood Disasters in Henan Province Based on GIS
- Bulletin of Soiland Water Conservation Vol. 33, Issue 3, Pages: 126-129(2014)
- 作者机构：
  
  1. 河南理工大学安全与应急管理研究中心,河南,焦作,454000
  2. 河南理工大学应急管理学院,河南,焦作,454000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.03.024
  CLC：
- Published：2014
- 稿件说明：
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LIU De-lin. Risk Evaluation of Flood Disasters in Henan Province Based on GIS[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 126-129.
DOI：

LIU De-lin. Risk Evaluation of Flood Disasters in Henan Province Based on GIS[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 126-129. DOI： 10.13961/j.cnki.stbctb.2014.03.024.

摘要

区域洪灾风险评价是洪水灾害管理的基础。以洪灾频发的河南省为研究区

在综合分析洪水致灾主要影响因素的基础上

从洪灾的危险性和承灾体的易损性两个角度出发

选取绝对高程、坡度、年均降水量、河网分布、人口密度和GDP密度6个指标构建了河南省洪灾风险评价体系。借助ArcGIS平台空间分析和叠加功能

获得了河南省洪灾风险评价图。结果表明: (1) 河南省洪灾风险呈现明显地带性

总体来说从南到北逐渐降低; (2) 从行政区划上来看

信阳市大部分地区和驻马店中南部处于洪灾高风险区

三门峡、焦作、新乡、鹤壁和濮阳处于低风险区

其他地区皆处于中度风险区。

Abstract

Risk assessment of regional floods is the basis of flood disaster management. This paper takes Henan Province as the study area

where has suffered from frequent flood disasters. The main factors of flood disasters were first analyzed

and six indexes were chosen to build the assessment system of flood disaster risk from the aspects of dangerousness and vulnerability of flood disasters. The six indexes were absolute elevation

slope

average annual precipitation

river distribution

population density and the GDP density. The risk distribution map of flood disasters was obtained by using the functions of spatial analysis and overlay of ArcGIS software. Results showed that: (1) The risk of flood disaster decreased gradually from the south to north. (2) From administrative divisions

most areas of Xinyang City and some of the southern areas of Zhumadian City were in the high risk zone

Sanmenxia

Jiaozuo

Xinxiang

Hebi and Puyang Cities were in the low risk zone

and other areas were in the middle. risk zone

关键词

Keywords

references

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Related Institution

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