Effects Of Carbon Emissions Policy Based On DSGE Modeling

The purpose of this paper is to simulate the effects of three common carbon policies(carbon tax policy,carbon quota policy,carbon intensity policy).Excessive carbon emission is an environmental and economic issue,and it is also normally seen as a global problem to be solved.Excessive carbon emission is an external issue that calls for regulation of carbon policies.The direct purpose of carbon policy is to solve environmental problems,but it will also have an implication on the macroeconomic.Therefore,we need to test the policy effect when choosing carbon emissions policy.A significant method to test effectiveness on carbon policy is to simulate the impact of carbon policies on environmental quality and macroeconomics before the policy is implemented.The method in this paper is to build a model that includes contains carbon emissions policy constraints of carbon policy within the framework of the DSGE model.This is b Because the simulation policy effect,it is one of the most effective methods is the DSGE model to simulate policy effects.In this paper,the DSGE model of carbon tax policy,DSGE model of carbon quota policy and DSGE model of carbon emission intensity policy are constructed respectively.In the study of the carbon tax policy effects,the economic model of family,firm,government and environment is constructed respectively,and three kinds of external shocks,namely,as follows technical shock,energy price shock and carbon tax impact are introduced.And we find The environmental quality equation and Carbon emission function,and finally get the impulse response diagram;in the study of carbon quota policy and carbon intensity policy,the impact of carbon quota and carbon emissions intensity policy are introduced based on the model.The conclusions of this paper are as follows.First,these three carbon emission policies all have a better effect on carbon emission reduction better mitigation effect.Second,the impact on the output:the increase in carbon tax rates will not have a greater negative impact on the output;The increasing of carbon emissions quota and intensityin creases,the intensity of carbon emissions increase in the short term is conducive to output in the short term,but in the long term even Damage to the output;Third,within the carbon emissions policy constraints,technological progress,the short term environmental quality decline in the short term with technological advances;but in the long term environmental quality will become better,which agrees well with and environmental Kuznets theory,that is,with economic development,the environment The quality of the first changes worse after the better.And thereby,some implications for carbon policy could be achieved.First of all,the conclusions of this paper provide foundation for the selection of carbon policy.In the short term the most efficient policy is the quantitative carbon emissions policy,that is,carbon quota policy and carbon intensity policy.However,in the long-term carbon tax policy also has ideal effects on emission reduction.Second,the government should encourage technological innovation:on the one hand,technological progress has a great role in raising output,on the other hand,from the environmental quality point of view,technological progress is not conducive to the environment in the short term,but long-term it can still promote environmental quality.Finally,as one of the mitigation strategies,it is best to use a combination of carbon emissions policies.Although the quantitative carbon emission policy has a long-term "double dividend effect",carbon tax policy is also requisite to cushion the blow caused by implementing quantitative carbon policy,and effects of carbon tax policy on environmental quality are smaller in the short term.