PDF(2374 KB)
PDF(2374 KB)
PDF(2374 KB)
过去2000年中国农耕区拓展与垦殖率变化基本特征
({{custom_author.role_cn}}), {{javascript:window.custom_author_cn_index++;}}General characteristics of the agricultural area and fractional cropland cover changes in China for the past 2000 years
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