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依据世界原油贸易数据,以复杂网络理论为基础,结合地理学的区域分析方法,勾勒出世界原油贸易空间结构,并比较了区域间节点、出、入度及权重值的差异。利用熵值分析了网络的均质性,并对世界原油贸易空间结构进行了模拟。研究表明:①尽管世界原油贸易空间格局的节点增幅不大,但随时间推移,节点的度与权重值大幅增加,即世界原油贸易范围及效应在逐渐加大;②通过对节点、出、入度及权重值的比较,揭示了不同区域在世界原油贸易空间格局中的职能差异;③结构熵、权重熵的测定与世界原油贸易空间格局的模拟均表明世界原油贸易空间格局网络的有序性,世界原油空间格局是非均质的。多元化不等于均质化,贸易主体要依据各自所面临的客观环境选择适合区域合作伙伴,才能更好的落实多元化进口策略,切实解决可能面临的石油供给危机。
According to the world crude oil trade data, based on the theory of complex networks and geographical analysis method, the spatial structure of crude oil trade in the world is sketched and the differences among nodes, outputs, degrees of imports and weights are compared. The entropy is used to analyze the network homogeneity and to simulate the spatial structure of world crude oil trade. The results show that: (1) Although the increase of nodes in the spatial pattern of crude oil trade in the world is not large, the degree and weight of nodes have increased significantly over time, that is, the scope and effect of the world crude oil trade gradually increase; (2) Degree and weight value reveals the different functions of different regions in the spatial pattern of world crude oil trade; ③The determination of structure entropy, weight entropy and world oil trade spatial pattern both indicate the orderliness of the world crude oil trade spatial pattern network The world crude oil spatial pattern is heterogeneous. Diversification does not mean homogenization. Trade entities should choose suitable regional partners according to the objective environment they face, so as to better implement the diversified import strategy and effectively solve the possible oil supply crisis.