垄断条件下的贸易模式和政策选择——基于博弈视角的分析

Trade Pattern and Policy Choices under Monopoly Based on Game Theory Perspective

中文关键词:  垄断  贸易政策  出口补贴  博弈

英文关键词:monopoly  trade policy  export subsidy  game

中文摘要:

      传统贸易理论是建立在完全竞争的前提假设下的，然而由于现实中存在垄断等形式的市场不完善现象，从而使贸易模式和贸易政策发生了转变。文章建立了一个博弈模型，分析了当存在中间投入品垄断扭曲的条件下，本国进口中间投入品并向第三国出口最终品时，本国的最优贸易政策选择。 研究表明，本国的贸易政策应根据中间投入品的需求弹性而作出调整，进口关税与出口补贴政策可以相互替代，同时在制订贸易政策时应与产业政策相结合，以使本国福利最大化为目标。

英文摘要:

      The traditional theories are based on the premise of perfect competition. However, in the practical economy exist lots of market imperfection such as monopoly distortion, which changes trade pattern and trade policy. This paper develops a game model to analyze the optimal policy choices for home country to import intermediate inputs and export final goods to the third country in condition of monopoly distortion. The research shows that trade policy in home country should change with the demand elasticity of intermediate inputs and that export subsidy can be used as a substitute for import tariff. Meanwhile, in making trade policies, home country need combine trade policy and industrial policy with a target to maximize the domestic welfare.