As a complex network system,supply chains have some characteristics of complex networks as dynamic,self-adaptability, self-organizational, etc. This paper considered the whole macroscopic behavior of supply chains networks, analyzed growth evolving rule of birth, decline, and exit of enterprise node, and constructed a layered weighted supply chains network model based on preferential attachment of multiattribute parameter combination of nodes. The experiment results verify the scale-free property of the model, whose exponent of power law is in the range form 2 to 3,and it has higher clustering and lesser average path length with network size, which shows that the model exhibits small-world property.%供应链是一种动态的、自适应性、自组织的复杂网络系统,具有典型的复杂网络特征.考虑了供应链网络的整体宏观行为,通过分析企业节点的产生、衰亡及退出等生长演化规律,以节点多属性参数组合作为优先连接的依据,建立了一个分层加权供应链网络模型.实验结果显示,该模型具有无标度特性,其幂律分布的指数落在(2,3)范围内,而且具有较大的集聚系数及较小的平均路径长度,表明了其具有小世界效应.
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