| 沿海省区洪灾脆弱性空间变化的初步探究 |
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| 引用本文： | 孙阿丽,石纯,石勇,许世远,王军.沿海省区洪灾脆弱性空间变化的初步探究[J].环境科学与管理,2009,34(3):36-40. |
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| 作者姓名： | 孙阿丽 石纯 石勇 许世远 王军 |
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| 作者单位： | 华东师范大学地理信息科学教育部重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金面上项目，上海市重大科技攻关项目 |
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| 摘 要： | 目前，脆弱性评估主要有建立指标体系、依据历史灾情和建立灾损曲线三种方法。选取国内评价洪灾脆弱性的典型指标构建指标体系，并采用主成分分析方法从原始数据中提取占总方差85．614％的3个主成分来分析影响洪灾脆弱性的主要因素，并通过聚类分析的方法来反映沿海省区洪灾脆弱性的空间变化。结果表明：人均产值、城镇建成区面积、居民消费水平、人口密度和地均产值等是影响沿海省区洪灾脆弱性的主要因素。最终沿海11个省区根据脆弱性差异聚成4类。
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| 关 键 词： | 洪灾 脆弱性评估 主成分分析 聚类分析 空间变化 沿海省区 |
The Preliminary Inquiry of Flood Vulnerability Space Changes in Coastal Provinces and Autonomous Regions |
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| Sun Ali,Shi Chun,Shi Yong,Xu Shiyuan,Wang Jun.The Preliminary Inquiry of Flood Vulnerability Space Changes in Coastal Provinces and Autonomous Regions[J].Environmental Science and Management,2009,34(3):36-40. |
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| Authors: | Sun Ali Shi Chun Shi Yong Xu Shiyuan Wang Jun |
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| Institution: | Key Laboratory of Geographic Information Science of Ministry of Education;East China Normal University;Shanghai 200062;China |
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| Abstract: | At present,index systems,history disasters data and stage-damage curves are main vulnerability assessment methods.selects typical indicators of the flood vulnerability evaluation to build a system of indicators,extracts 3 factors by PCA accounting for 85.614% of the total variance from the original data to analysis the main factors effecting flood vulnerability,and then according to a cluster analysis,the space changes in coastal provinces and autonomous regions are inflected.The results show: per capita GD... |
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| Keywords: | floods vulnerability assessment principal component analysis cluster analysis changes in the space coastal provinces and autonomous regions |
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