国际铁矿石贸易格局的社会网络分析

Social Network Analysis of the International Iron Ore Trade Pattern

基于2000—2012年国际铁矿石贸易数据,采用社会网络分析法研究了国际铁矿石贸易的网络密度、中心性及聚集系数等指标。结果表明:第一,国际铁矿石贸易关系的紧密程度不高。虽然国际铁矿石贸易波及近一百个国家,但真正意义控制铁矿石国际贸易网络的只有澳大利亚、巴西等几个国家。第二,在国际铁矿石贸易网络中处于重要地位的国家是巴西、澳大利亚、日本和德国,中国没有对国际铁矿石贸易产生重大影响。第三,国际铁矿石贸易网络的集聚系数变化幅度不大,但总体呈现下降的趋势。

Based on the international iron ore trade data during the period 2000-2013, this paper analyzes the density,centrality and clustering coefficient of the international iron ore trade network by using the Social Network Method.These results show that： firstly, the tightness of the trade relation is not high. Although the international iron ore trade spreads nearly one hundred countries, its network is controlled by only a few countries such as Australia, Brazil.Secondly, Brazil, Australia, Japan and Germany occupy the important position in the international iron ore trade network,on which China does not have a significant impact. Thirdly, clustering coefficient of the international iron ore trade network has changed slightly, while the overall trend is downward rendering.