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应用复杂网络方法,构建了以93个国家为节点、以国家或地区间的天然气贸易流动方向为边的复杂网络,分析了2010年国际天然气贸易关系的无权和加权复杂网络结构特征。分析结果表明:国际天然气贸易关系分布具有幂律性和群簇性,较大的贸易量会弥补群簇间贸易结构的松散性;贸易量与贸易关系数量基本呈正比例关系,但全球贸易集团的出现与其贸易量的关系不大。研究结果旨在为我国的天然气贸易决策提供科学依据。
By using the complex network method, a complex network with 93 countries as nodes and natural gas trade flows among countries or regions is constructed, and the structural features of the non-weighted and weighted complex network of international gas trade relations in 2010 are analyzed. The results show that the distribution of international trade in natural gas is power-law and cluster. The larger volume of trade will make up for the looseness of the trade structure among the clusters. The trade volume and the number of trade relations are basically proportional to each other. However, There is little relationship with the volume of its trade. The results of the study are intended to provide a scientific basis for China’s natural gas trade decision-making.