Resources Science, Volume. 42, Issue 9, 1704(2020)
Fig. 1. Land, water resources, and virtual land trade of selected countries, 2016
Fig. 3. Virtual land trade volumes of main export/import countries, 1986-2016
Fig. 4. Virtual land flow between different economic groups of countries, 1986-2016
Fig. 5. Distance of trade links and the cumulative proportion of their trade, 2016
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Wenli QIANG, Cuiling ZHANG, Aimin LIU, Shengkui CHENG, Xiang WANG, Fan LI.
Received: Oct. 11, 2019
Accepted: --
Published Online: Apr. 23, 2021
The Author Email: LIU Aimin (liuam@igsnrr.ac.cn)