基于RS和GIS的县域生态环境质量综合评价模型--以惠东县为例  

An integrated assessment model of county level eco-environmental quality based on RS and GIS: A case study of Huidong County, Guangdong Province of South China

作　　者：凡宸[1,2] 夏北成[1] 秦建桥 

机构地区：[1]中山大学环境科学与工程学院,广州510275 [2]惠州大亚湾环保局,广东惠州516081 [3]广东省环境科学研究院,广州510045

出　　处：《生态学杂志》2013年第3期719-725,共7页Chinese Journal of Ecology

摘　　要：以GIS数据和统计年鉴数据为基础,采用非参数Kruskal-Wallis卡方(χ2)检验确定指标权重,基于"先分级后加权"的思路,结合RS/GIS软件对广东省惠东县的生态环境质量进行评价,研究生态环境质量评价指标体系的构建方法和权重确定方法,构建出移植性较强的生态环境质量评价模型,并以县域、乡镇行政区和栅格为评价单元进行评价。县域尺度结果表明,惠东县的生态环境质量整体较好,其生态环境质量指数(eco-environmental quality index,EQI)值达到3.6;乡镇尺度结果表明,高潭镇生态环境质量最优,其EQI值达到4.26,港口管委会生态环境质量最差,其EQI值仅为2.64;栅格尺度结果表明,西南沿海的经济发达地区的生态环境质量一般或较差,所占面积比例分别为21%和23%,东北山区的经济欠发达地区的生态环境质量优良,所占面积比例约为56%。Based on the GIS data, statistical yearbook data, and the idea of ＂classifying indices first and weighting each index then＂, by adopting Kruskal-Wallis （ X2 ） test to confirm index weight, and in combining with RS/GIS software, this paper evaluated the eco-environmental quality of Huidong County, Guangdong Province of South China, aimed to approach the colastruc- tion method of eco-environmental quality assessment index system and the method of confirming weight, and to establish an easily transplanted eco-environmental quality assessment model at county, town, and raster scales. The assessment at county scale showed that the overall eco-envi- ronmental quality of Huidong County was good, with the eco-environmental quality index （EQI） being 3.6. The assessment at town scale showed that Gaotan Town had the best eco-environmen- tal quality （ EQI = 4.26）, while Port Management Committee had the worst one （ EQI = 2.64 ）. The assessment at raster scale showed that the eco-environmental quality of the economically de- veloped region in southwest coast of Huidong County was fair or poor, with an area accounting for 21% or 23% of total area, respectively, while that of the economically undeveloped region in northeast mountains of Huidong County was good, with an area accounting for 56% of the total.

关 键 词：生态环境质量 遥感 地理信息系统 客观权重法 惠东县 

分 类 号：X826[环境科学与工程—环境工程]