碳酸锂国际贸易复杂网络建模与分析

    Modeling and analysis of international lithium carbonate trade based on complex network

    • 摘要: 碳酸锂涉及到多个战略新兴产业,随着其需求不断加大,碳酸锂的国际贸易网络不断扩大。根据复杂网络理论,构建碳酸锂国际贸易复杂网络模型,利用UN comtrade 数据库中2005~2014年碳酸锂国际贸易数据,计算碳酸锂国际贸易网络的密度、中心度、聚类系数等指标并加以分析。结果表明:2005年以来,碳酸锂国际贸易进出口国家数量和国家保持相对稳定,各国之间的贸易关系相对紧密。德国、中国、美国在整个碳酸锂国际贸易网络中占有重要地位。受2007年次贷危机和2012年希腊债务危机影响,碳酸锂贸易量下降。2012年以来,碳酸锂全球化的趋势加快,区域集团化趋势明显。

       

      Abstract: Engaged in many strategic emerging industries,the demand for lithium carbonate is increasing,as well as the expansion of the international trade network for the mineral product.Based on the complex network model built based on the relevant theory,the paper has calculated and analyzed such indicators as degree,weighted degree,clustering coefficient and modularity,etc.using international lithium carbonate trade data from 2005 to 2014 in UNcomtrade database.The analysis shows that the countries and the number of the countries involved in the international trade remain stable since 2005,and the trade ties among these countries are relatively close.Three countries,including German,China and U.S play very important role within the whole network.Influenced by subprime crisis in 2007 and Greek debt crisis in 2012,the trade volume of lithium carbonate decreased.Globalization of lithium carbonate is currently speeding and regional collectivization becoming more noticeable.

       

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