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OALib Journal期刊
ISSN: 2333-9721
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差分主成分分析法在辽河三角洲景观变化中的应用
DOI: 10.11821/xb200404013, PP. 592-598
Keywords: 差分主成分分析法,景观变化,分类后比较法,LANDSAT/TM图像
Abstract:
差分主成分分析法是应用遥感数据检测景观变化的一种新方法。为了提高检测精度，我们利用TM卫星遥感数据，改进了主成分分析法和图像差值法，提出了差分主成分分析法。并以辽河三角洲地区为例，对该方法进行了验证。研究结果表明(1)与传统的检测法—分类后比较法相比，差分主成分分析法具有较高的检测精度，总检测精度为0.89，Kappa指数为0.82；(2)在1984~2000年的16年间，辽河三角洲地区有近22%的景观发生了变化，主要包括芦苇湿地的减少、水稻田的增加以及城镇用地的增加。
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