基于复杂网络的水产品贸易格局特征演变研究

Research on Trade Pattern Evolution of Global Aquatic Products Based on the Complex Network

选取2002—2016年全球水产品贸易数据,以复杂网络理论为基础,构建全球水产品贸易加权有向网络,通过计算网络度、集聚系数、互惠指数、中间中心度、核心—边缘结构等指标,探究全球水产品贸易格局特征演变规律。结果表明,在全球水产品贸易规模不断扩大的同时,贸易网络呈现出均质化、小团体特征,以中国、美国、法国为代表国家的贸易控制力量开始趋于均衡,全球水产品贸易网络朝着秩序化方向发展。

Based on the complex network theory,the global aquatic product trade data from 2002 to 2016 are selected to build a global aquatic products trade-weighted directed network and explore the trade pattern evolution of global aquatic products by calculating the network degree,agglomeration coefficient,reciprocity index,betweenness centrality,core-periphery structure.The results show that while the scale of global trade in aquatic products is expanding,the trade network is characterized by homogenization and small groups.The trade control power represented by China,the United States of America and France are beginning to balance.The global aquatic product trade network is becoming orderly.