复杂网络视角下的国际铝土矿贸易演化特征研究

铝土矿作为重要的国际贸易大宗商品之一,由于供应地和需求地空间上的分离使得铝土矿国际贸易关系呈现出复杂性。而铝土矿贸易中错综复杂的供求变动,也促使其铝土矿国际贸易格局不断演化。为了研究铝土矿国际贸易结构的演化特征,本文利用2002~2015年的铝土矿国际贸易数据,基于复杂网络理论,构建了有向加权复杂网络模型,从贸易网络的整体结构特征、幂律分布特征、核心国家识别等方面进行了分析。结果显示:2002~2015年期间中国在国际铝土矿贸易中具有最大的影响力;铝土矿国际贸易关系日趋紧密,贸易全球化特征凸显;铝土矿贸易份额在逐渐被越来越少的国家占据,以中国为首的主要国家的贸易集中化特征明显。

Study on the Evolution Characteristics of International Bauxite Trade from the Perspective of Complex Network

Bauxite is one of the important commodities of international trade, and the separation of supply and demand space makes the international trade relations of bauxite appear complicated. The complicated changes of supply and demand in bauxite trade have also led to the evolution of bauxite international trade pattern.In order to study the evolutionary characteristics of bauxite international trade structure, this paper constructs a directional weighted network based on the complex network theory. According to the International trade data of bauxite from 2002 to 2015, we analyze the overall structural characteristics of the trade network , the power-law distribution and core country identification. The results show that China has the greatest influence in international bauxite trade between 2002 and 2015. The international trade relations of bauxite have become increasingly close and the characteristics of trade globalization have been highlighted. The share of bauxite trade is gradually being occupied by less and less countries.The centralization of trade in major countries headed by China is obvious.