| Accuracies of Global Land Cover Maps Checked against Fluxnet Sites |
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| 作者姓名： | Peng Gong |
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| 作者单位： | Department of Environmental Science,Policy and Management,University of California,Berkeley;State Key Laboratory of Remote Sensing Science,Jointly Sponsored by Institute of Remote Sensing Applications,Chinese Academy of Sciences,and Beijing Normal Univers |
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| 基金项目： | The author is grateful to research support from the US National Science Foundation，国家自然科学基金 |
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| 摘 要： | Global land cover data products are key sources of information in understanding the complex interactions between human activities and global change. They play a critical role in improving performances of ecosystem, hydrological and atmospheric models. Three freely available global land cover products developed in the United States are popularly used by the scientific community. These include two global maps developed separately by the United States Geological Survey （USGS） and the University of Maryland （UMD） with NOAA Advanced Very High Resolution Radiometer （ AVHRR ） data, and one developed by Boston University with the EOS Moderate Resolution Imaging Spectroradiometer （ MODIS） data. They are compared with known land cover types at 250 available Fluxnet sites around the world. The overall accuracies are 37%, 36% and 42%, respectively for the USGS, UMD and Boston global land cover maps, Some future global land cover mapping strategies are suggested.
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| 关 键 词： | 土地覆盖类型 覆盖物 网站 美国地质调查局 中分辨率成像光谱仪 MODIS数据 波士顿大学 检查 |
Accuracies of Global Land Cover Maps Checked against Fluxnet Sites |
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| Peng Gong.Accuracies of Global Land Cover Maps Checked against Fluxnet Sites[J].Science Foundation in China,2008,16(1):31-35. |
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| Authors: | Peng Gong |
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| Institution: | Department of Environmental Science,Policy and Management,University of California,Berkeley;State Key Laboratory of Remote Sensing Science,Jointly Sponsored by Institute of Remote Sensing Applications,Chinese Academy of Sciences,and Beijing Normal University,Beijing,100101 |
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| Abstract: | Global land cover data products are key sources of information in understanding the complex interactions between human activities and global change.They play a critical role in improving performances of ecosystem,hydrological and atmospheric models.Three freely available global land cover products developed in the United States are popularly used by the scientific community.These include two global maps developed separately by the United States Geological Survey (USGS) and the University of Maryland (UMD) with NOAA Advanced Very High Resolution Radiometer (AVHRR) data,and one developed by Boston University with the EOS Moderate Resolution Imaging Spectroradiometer (MODIS) data.They are compared with known land cover types at 250 available Fluxnet sites around the world.The overall accuracies are 37%,36% and 42%,respectively for the USGS,UMD and Boston global land cover maps.Some future global land cover mapping strategies are suggested. |
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| Keywords: | global land cover map |
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