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福州城区不透水面的光谱混合分析与识别制图

DOI: 10.11834/jig.20070518

Keywords: 不透水面,光谱混合分析,最小噪音分量变换,遥感

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Abstract:

作为RiddV-I-S模型中的一个重要组成部分,城市不透水面在监测城市扩展和解释人类活动对生态环境的影响起着非常重要的作用。利用图像处理技术,可以迅速地从遥感图像中提取城市不透水面信息。本文以福州城区为例,利用最小噪音分量变换法研究LandsatETM+影像中城市不透水面信息的提取。通过选取最小噪音分量变换后的前3个分量和线性光谱混合模型,测算得到了高反照率、低反照率、植被及土壤4个模拟城市不同土地覆盖类型的终端地类分量。通过综合低反照率和高反照率两个终端地类,最后得到了不透水面分量。结果表明,城市不透水面的增加对城市生态环境有负面影响。

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