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【摘 要】
：
Vegetation or land cover maps have been made directly or indirectly available for the entire territory of China. The certainties anduncertainties of land cover
【机 构】
：
Research Center for Eco-Environmentai Sciences,Department of Forestry and Natural Resources
【出 处】
：
环境科学学报
【发表日期】
：
2004年期
【基金项目】
：
国家自然科学基金
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