| 基于RS和GIS的珠江三角洲生态环境脆弱性综合评价 |
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| 作者姓名： | Xu QY Huang M Liu HS Yan HM |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,北京100101;北京市地质工程设计研究院,北京100505
2. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,北京,100101 |
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| 基金项目： | 国家科技支撑计划项目(2008BAK50B01); 中国科学院对外合作重点项目(GJHZ05); 国家自然科学基金面上项目(31070393)资助 |
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| 摘 要： | 使用空间主成分分析法构建评价指标体系,采用层次分析法确定指标权重,结合遥感数据和地理信息系统软件,对珠江三角洲2004-2008年生态环境脆弱性进行了综合评价并对脆弱性成因进行分析.结果表明:生态环境极度和重度脆弱区主要分布在珠江三角洲中部,占整个研究区面积的34.0％;生态环境中度脆弱区主要分布在珠江三角洲东部,占25.5％;生态环境轻度和微度脆弱区主要分布在珠江三角洲西部,分别占28.7％和l1.8％.中度和轻度脆弱区占整个研究区面积的54.2％,表明珠江三角洲大部分区域的生态环境属中度和轻度脆弱.影响珠江三角洲生态环境脆弱性的自然因素主要有海拔高度、大暴雨日数、水土流失比率、易涝耕地面积比率、归一化植被指数、景观多样性指数,人为因素主要有人口密度、单位面积废水排放量、单位面积废气排放量、土地利用变化、化肥施用强度、农药使用强度、万人机动车拥有量、环保投资指数.极度和重度脆弱区的主要特征是海拔低、洪涝灾害发生频率高、易涝耕地面积多、植被破坏严重、污染强度大和环保投资指数小等.
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| 关 键 词： | 生态环境 脆弱性 遥感 地理信息系统 珠江三角洲 |
Integrated assessment of eco-environmental vulnerability in Pearl River Delta based on RS and GIS |
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| Xu QY,Huang M,Liu HS,Yan HM.Integrated assessment of eco-environmental vulnerability in Pearl River Delta based on RS and GIS[J].Chinese Journal of Applied Ecology,2011,22(11):2987-2995. |
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| Authors: | Xu Qing-Yong Huang Mei Liu Hong-Sheng Yan Hui-Min |
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| Institution: | XU Qing-yong1,2,HUANG Mei1,LIU Hong-sheng1,YAN Hui-min1(1Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China,2Beijing Geology Engineering Design Research Institute,Beijing 100505,China) |
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| Abstract: | Based on the remote sensing data and with the help of geographic information system,an integrated assessment was conducted on the eco-environmental vulnerability of Pearl River Delta in 2004-2008.Spatial principal component analysis was used to generate the evaluation indicators,and analytic hierarchy process(AHP) was applied to determine the weights of the evaluation factors.The reasons causing the vulnerability of the eco-environment in Pearl River Delta were discussed.In the study area,its middle part wa... |
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| Keywords: | eco-environment vulnerability remote sensing GIS Pearl River Delta |
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