历史视角下亚欧大陆海陆交通可达性空间格局演化
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Spatial evolution of Eurasian land and sea transport accessibility from the historical perspective
LI Luqi, WU Qiyan, LIU Kewen, LIANG Shuangbo, QIAN Chaofeng
图5 全球港口间网络形态及其演化
Fig. 5 Pattern and evolution of global port network