地理科学 ›› 2012, Vol. 32 ›› Issue (8): 958-964.doi: 10.13249/j.cnki.sgs.2012.08.958

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基于栅格的鄱阳湖生态经济区洪灾脆弱性评价

陈萍1,2(), 王兴玲3, 陈晓玲1,2   

  1. 1. 西南大学地理科学学院,重庆 400715
    2. 武汉大学测绘遥感信息工程国家重点实验室,湖北 武汉430079
    3. 民政部国家减灾中心,北京 100124
  • 收稿日期:2011-06-26 修回日期:2011-11-14 出版日期:2012-08-20 发布日期:2012-05-28
  • 作者简介:

    作者简介:陈 萍(1978-)女,湖南张家界人,讲师,博士研究生,主要从事遥感技术在资源环境中的应用研究。 E-mail:cp_chenping@126.com

  • 基金资助:
    973项目(2009CB723905)、国家自然基金委创新研究群体科学基金(41021061)、水利部水专项(201001054)、国家自然基金项目(41071261)和中央高校基本科研业务项目(XDJK2012C036)资助

Ping CHEN1,2(), Xing-ling WANG3, Xiao-ling CHEN1,2   

  1. 1. Geographical Science School, Southwest University of China, Chongqing 400715, China
    2. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei 430079, China
    3. National Disaster Reduction Center of China Ministry of Civil Affairs, Beijing 100124, China
  • Received:2011-06-26 Revised:2011-11-14 Online:2012-08-20 Published:2012-05-28

摘要:

目前洪灾脆弱性研究主要是基于行政区划上的社会脆弱性评价,无法揭示评价单元内部脆弱性的空间分布。选取鄱阳湖生态经济区作为研究对象,根据人与环境系统的特点,选择影响洪灾脆弱性的15个变量,建立了基于栅格的洪灾脆弱性综合指数模型。结果表明,研究区域的洪灾脆弱性以中度脆弱为主,极度与高度脆弱区主要分布在人口密集的鄱阳湖东南与西南部的湖滨地区、主要河流的缓冲区以及土地利用类型为水田的区域。从脆弱性的3个要素(暴露度、敏感性和适应能力)的空间分布揭示了洪灾脆弱性空间分布形成的原因。基于栅格的评价结果,能够充分反映县市内部和行政边界处洪灾脆弱性的空间分布与变化情况。

关键词: 栅格, 鄱阳湖生态经济区, 洪灾, 脆弱性

Abstract:

Nowadays, researches on flood vulnerability assessment focus on social vulnerability to flood at administrative-division level, which can not present spatial distribution of vulnerability within assessing units and scaling effect of vulnerability. According to the features of human-environment system of Poyang Lake Economical Ecological Zone, fifteen indicators were selected to develop a composite index of flood vulnerability. The result indicated that the majority of the study area was moderately vulnerable to floods. High and extremely vulnerable areas were located at the lakeshore area of the southeast and the southwest of Poyang Lake, the buffer area of main rivers and the paddy fields. We analyzed the spatial distribution of flood vulnerability from the distribution of exposure, sensitivity and adaptive ability. The study was to develop a method to identify flood vulnerability at a grid level, which presented the spatial distribution of vulnerability within assessing units and at borders among units. It will supply policy makers with scientific grounds to establish multi-scale policy of flood protection.

Key words: raster level, Poyang Lake Economical Ecological Zone, flood, vulnerability

中图分类号: 

  • P237