首页|Evolution of the rare earth trade network:A perspective of dependency and competition
Evolution of the rare earth trade network:A perspective of dependency and competition
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As a global strategic reserve resource,rare earth has been widely used in important industries,such as military equipment and biomedicine.However,existing analyses based solely on the total volume of rare earth trade fail to uncover the underlying competition and dependency dynamics.To address this gap,this paper employs the principles of trade preference and import similarity to construct dependency and competition networks.Complex network analysis is then employed to study the evolution of the glo-bal rare earth trade network from 2002 to 2018.The main conclusions are as follows.The global rare earth trade follows the Pareto principle,and the trade network shows a scale-free distribution.China has emerged as the world's largest importer and exporter of rare earth since 2017.In the dependency net-work,China has become the most dependent country since 2006.The result of community division shows that China has separated from the American community and formed new communities with the Association of Southeast Asian Nations(ASEAN)countries.The United States of America has formed a super-strong community with European and Asian countries.In the competition network,the distribu-tion of competition intensity follows a scale-free distribution.Most countries face low-intensity compe-tition,but there are numerous competing countries.The competition related to China has increased significantly.Lastly,the competition source for the United States of America has shifted from Mexico to China,resulting in China,the USA,and Japan becoming the core participants in the competition network.
School of Urban and Regional Science,Shanghai University of Finance and Economics,Shanghai 200433,China
School of Business,East China University of Science and Technology,Shanghai 200237,China
School of Management,University of Bradford,Bradford BD7 1DP,United Kingdom
School of Statistics and Applied Mathematics,Anhui University of Finance and Economics,Bengbu 233030,China
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Ministry of Education of the People's Republic of China Humanities and Social Sciences Youth FoundationSocial Sciences Planning Youth Project of Anhui ProvinceInnovation Development Research Project of Anhui Province
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