国际碳交易政策选择的效果研究

Research on Effects of Choice of International Carbon Emission Trading Policies

考虑两个相似国家可以选择不实施碳交易政策、合作实施碳交易政策以及不合作实施碳交易政策,构建出相应的博弈模型,比较了不同碳交易政策选择下两国企业利润、环境质量及国家福利的变化。结果表明:与两国不实施碳交易政策相比,两国合作和不合作实施碳交易政策均可以改善各国的环境质量和提高国家福利,且两国合作实施碳交易政策下的环境质量更好,国家福利更高;当碳排放的环境损害程度满足一定条件时,两国合作和不合作实施碳交易政策也可能增加各国企业利润。

Considering that two identical countries can choose not to carry out carbon emission trading policy,independently or cooperatively carry out carbon emission policy,three game models are constructed to analyze changes of different choices on profit,environment quality and social welfare.It’s found that compared to the choice of not carrying out carbon emission trading policy,countries choose to independently or cooperatively carry out carbon emission policy could improve their environment quality and social welfare,which are more high under the choice of cooperation in carbon emission trading policy.Furthermore,profit under the choice of cooperation or non-cooperation in carbon emission trading policy may be higher when degree of environmental damage from carbon emissions satisfies certain conditions.