非完全竞争市场假设在CGE模型中的引入及应用

通过对部门生产函数及相关参数、系数的改造,将非完全竞争市场条件引入CGE模型,并模拟在完全竞争与不完全竞争两个不同市场结构下国际油价上升对我国经济的影响.结果表明,当油品市场设定为不完全竞争时,面对国际油价上升的冲击,GDP下降的程度大于完全竞争的情况.因此随着油品市场逐渐开放,油品市场的产出增加,可以增强我国石油产业和总体经济应对国际油价上升冲击的能力,应继续推动我国石油产业市场自由化的进程.

A CGE Model with Imperfect Competition on Oil Price Shocks in China

As China's petroleum market consists of imperfect competition,this research tries to combine imperfect competition into the computable general equilibrium(CGE) model,simulating the effects of rising oil price on China economy.The results are different considering market structure.The results show that the GDP decrease is greater under imperfect competition than under perfect competition of petroleum market.More social welfare would be attained if the government deregulates petroleum market.Thus we recommend the government continue to liberalize the petroleum sector.