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世界能源贸易网络的演化特征与能源竞合关系
何则1,2,3,4,杨宇1,2,3,*(),刘毅1,2,3,金凤君1,2
Characteristics of evolution of global energy trading network and relationships between major countries
HE Ze1,2,3,4,YANG Yu1,2,3,*(),LIU Yi1,2,3,JIN Fengjun1,2

图1. 1988—2017年全球能源贸易的总额、参与主体及双边贸易关系演变

Fig.1. Total value of global energy trade, participants, and bilateral relations, 1988-2017