过去2000年中国农耕区拓展与垦殖率变化基本特征 |
方修琦, 何凡能, 吴致蕾, 郑景云 |
General characteristics of the agricultural area and fractional cropland cover changes in China for the past 2000 years |
FANG Xiuqi, HE Fanneng, WU Zhilei, ZHENG Jingyun |
图1 中国史前稻粟作遗存点与西周以来农耕区拓展 注:基于自然资源部标准地图服务网站GS2019(1830)号地图制作,底图无修改;虚线内区域为耕地相对集中分布区,其内耕地主要呈不连续的分片分布,其外可能有零散的耕地分布;距今7000—4000年稻、粟作遗存分布资料引自文献[ |
Fig. 1 Sites with macro-remains of rice and millet plants during 7000-4000 BP and the expansion of agricultural area since Western Zhou Dynasty (1046-771 BC) in China |
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