中文摘要：

在网络外部性情境下，考察网络外部性强度、竞争强度和市场风险对竞争供应链结构选择的影响，分别从制造商与供应链的角度出发，识别竞争供应链的纵向结构选择策略和动态演化均衡．基于制造商的结构选择受市场风险波动范围和竞争强度的影响，竞争强度边界和风险的范围依赖于网络外部性强度系数，在不同的网络外部性环境下，竞争强度和风险对制造商的结构选择的影响作用不同；基于供应链系统的控制结构选择与市场风险无关，仅与依赖于网络外部性强度的竞争强度有关．

英文摘要：

Under network externality, this paper investigates the impact of network externality, competition intensity and market risk on the choice of the vertical control structure of the competitive supply chain, and addresses the evolution process and the equilibrium of the vertical structure from the aspect of manufacturer＇s profit and supply chain＇s profit. The choice from manufacturers is influenced by the competition intensity and market risk, which are influenced by the network externalities. When the network externality changes, the competition intensity and market risk play different role in the choice of the vertical control structure. The choice from supply chains is irrelevant to the market risk, which is influenced by the network externality.