| 大宁河流域生态环境综合评价及其演变 |
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| 引用本文： | 刘瑞民,沈珍瑶.大宁河流域生态环境综合评价及其演变[J].北京师范大学学报(自然科学版),2006,42(2):200-203. |
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| 作者姓名： | 刘瑞民 沈珍瑶 |
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| 作者单位： | 北京师范大学环境学院,环境模拟与污染控制国家重点实验室,100875,北京;北京师范大学环境学院,环境模拟与污染控制国家重点实验室,100875,北京 |
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| 摘 要： | 以长江流域三峡库区大宁河流域为研究对象,在遥感(RS)和地理信息系统(GIS)基础上应用空间主成分分析方法,综合评价了大宁河流域生态环境质量,并分析了该流域生态环境的历史演变.评价结果显示,1990年前后大宁河流域生态环境综合评价等级9所占比例最大,约40%;2000年前后大宁河流域生态环境综合评价结果中没有一个等级所占的比例非常突出.对比1990和2000年大宁河流域生态环境综合评价结果,可以发现,1990年前后大宁河流域生态环境总体比较好,2000年前后生态环境有退化的趋势.
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| 关 键 词： | 大宁河流域 遥感 地理信息系统 空间主成分分析 生态环境综合评价 |
| 收稿时间： | 2005-10-29 |
| 修稿时间： | 2005年10月29日 |
INTEGRATED ASSESSMENT AND CHANGES OF ECOLOGICAL ENVIRONMENT IN DANING RIVER WATERSHED |
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| Liu Ruimin,Shen Zhenyao.INTEGRATED ASSESSMENT AND CHANGES OF ECOLOGICAL ENVIRONMENT IN DANING RIVER WATERSHED[J].Journal of Beijing Normal University(Natural Science),2006,42(2):200-203. |
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| Authors: | Liu Ruimin Shen Zhenyao |
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| Institution: | School of Environment; State Key Laboratory of Environment Simulation and Pollution Control; Beijing Normal University, 100875, Beijing, China |
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| Abstract: | Based on the remote sensing(RS),geographical information system(GIS) and the method of spatial principal component analysis(SPCA),the integrated assessment and changes of ecological environment in Daning River watershed are studied.This watershed is located in the Three Gorge area,China.The integrated assessment result shows that level 9 has the biggest proportion in the year of 1990.The proportion is about 40%.However,there is not any level whose proportion is bigger than others in the year of 2000.with the comparson of the assessment result in the year of 1990 and the year of 2000,it is discovered that the ecological environment of 1990 is better than that of 2000 in Daning River watershed. |
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| Keywords: | Daning River watershed remote sensing geographical information system spatial principal component analysis eco-environmental integrated assessment |
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