| 基于混合像元分解的南方地区植被覆盖度遥感监测——以广州市为例 |
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| 引用本文： | 张志新,邓孺孺,李灏,陈蕾,陈启东,何颖清.基于混合像元分解的南方地区植被覆盖度遥感监测——以广州市为例[J].国土资源遥感,2011(3):88-94. |
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| 作者姓名： | 张志新 邓孺孺 李灏 陈蕾 陈启东 何颖清 |
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| 作者单位： | 中山大学地理科学与规划学院;国家海洋局南海海洋工程勘察与环境研究院; |
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| 基金项目： | 国家自然科学基金项目(编号:40671144); 水利部948项目(编号:200820)共同资助 |
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| 摘 要： | 通过测量图像端元的地表反射率,对遥感图像进行精确大气校正;在对混合像元分解模型进行改进的基础上,建立了基于地表反射率的线性混合像元分解( Liner Spectral Unmixing,LSU)模型,有效地避免了因大气时间、空间差异所造成的多时相误差,实现了多时相对比;通过增加土壤湿度因子,消除了土壤湿度差异造成的误差...
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| 关 键 词： | 植被覆盖度 线性混合像元分解 地表反射率 土壤湿度 Landsat TM图像 |
Remote Sensing Monitoring of Vegetation Coverage in Southern China Based on Pixel Unmixing:A Case Study of Guangzhou City |
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| ZHANG Zhi-xin,DENG Ru-ru,LI Hao,CHEN Lei,CHEN Qi-dong,HE Ying-qing.Remote Sensing Monitoring of Vegetation Coverage in Southern China Based on Pixel Unmixing:A Case Study of Guangzhou City[J].Remote Sensing for Land & Resources,2011(3):88-94. |
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| Authors: | ZHANG Zhi-xin DENG Ru-ru LI Hao CHEN Lei CHEN Qi-dong HE Ying-qing |
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| Institution: | ZHANG Zhi-xin1,DENG Ru-ru1,LI Hao1,CHEN Lei1,2,CHEN Qi-dong1,HE Ying-qing1(1.School of Geographic Science and Planning,Sun Yat-sen University,Guangzhou 510275,China,2.South China Sea Marine Engineering and Environment Institute,SOA,Guangzhou 510300,China) |
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| Abstract: | Based on the measurement of the ground spectral reflectance of basal land covers and the accurate atmospheric correction for Landsat TM data,the authors improved the linear spectral mixture model(LSU)and developed a vegetation coverage retrieval model suitable for southern China.The effects of the atmospheric environment and the imaging time of remote sensing data were both reduced,contributing to the multi-temporal comparison,by the utilization of the ground spectral reflectance from field survey.The soil ... |
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| Keywords: | Vegetation coverage Linear spectral unmixing(LSU) Ground spectral reflectance Soil moisture Landsat TM image |
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