构建了2010年有机化学品整体及三种基础有机化学产品(乙烯、丙烯、丁二烯)的无权及权重国际贸易网络,通过复杂网络方法,研究了节点度、集聚性、无标度性和同配性等从微观到宏观的网络属性。研究结果显示,有机化学品贸易中贸易关系和贸易量分配很不均匀;度分布结果显示,有机化学品无权网络服从指数分布,权重网络无典型分布特征,三种单种产品无权出口网络为服从幂律分布的无标度网络,进口网络度分布呈指数分布,权重网络呈现两段截断幂律度分布;度相关性测算结果显示所研究的四种网络均为异配网络;另外,网络的局部集聚特征均较为明显。本研究从全局角度解析了全球有机化学品贸易,为我国参与有机化学品国际贸易与战略制定提供了参考。
An analysis of global organic chemicals trade based on complex network method was presented. Both un- weighted and weighted directed networks of organic chemicals and its three sub - class products including ethylene, pro- pylene, and butadiene were set up, and the scale -free, assortative, and clustering properties of these networks were studied. Node degree and node strength showed that there was an uneven distribution in both trade relationship and trade amount. The degree distribution identified that the unweighted network of organic chemicals followed an exponential degree distribution, but there was no obvious distribution characteristic with weighted network. The unweighted export networks of three sub -class products showed scale -free features with a power -law degree distribution. However, the import net- works of these three sub - class products followed an exponential degree distribution, indicating homogeneous import and inhomogeneous export. The weighted networks of the sub - class products followed two sections of truncated power - law degree distribution. Correlation analysis showed that all these networks were degree - degree weakly disassortative, but they had strong strength disassortative. Additionally, all of the four networks presented high clustering coefficient. Based on the analysis, our study contributed to a better understanding of the global organic chemicals trade from a holistic per- spective. It also provided a reference for China's trade strategy of organic chemicals.