中美稀土出口空间格局比较研究

Comparative Study on the Spatial Pattern of Rare Earth Export in China and the United States

以复杂网络理论为基础,结合探索性空间数据分析方法,对中美稀土出口空间格局比较研究。研究表明,中美稀土出口空间格局差异显著,美国稀土出口空间格局的均质性程度高于中国,区位条件是差异形成的主要根源。两国稀土出口空间结构相似性较强,稀土出口的空间格局以互补性为主,战略性贸易政策驱动空间结构由趋同到趋异演变。中国稀土出口的地理集中程度略高于美国,两国的稀土出口格局均呈现出空间分异特征且存在局部区域空间集聚,地理、经济与政治因素交织影响决定了贸易格局的复杂性。

Based on complex network theory,combined with exploratory spatial data analysis,we carry out a comparative study on spatial pattern of China＇s and USA＇s rare earth export trade. Conclusions are drawn as follows. There are significant differences in spatial pattern of rare earth export between China and USA,and the degree of homogenization of USA＇s spatial pattern of rare earth export is higher than that of China. Locational condition is the main source of differences. There is strong spatial structure similarity of rare earth export between China and USA,yet the spatial pattern of rare earth export is mainly complementary. In recent years,strategic trade policies have driven spatial structure from convergence to divergence. The rare earth export of China is slightly more geographically concentrated than that of USA,besides,there are spatial differentiation and locally spatial agglomeration in China＇s and USA＇s rare earth export,and the influences exerted by geographical and economical and political factors determine the complexity of trade pattern.