The influence and mechanism of carbon trading pilot on provincial carbon emissions equity:Empirical analysis based on multi-period DID,spatial DID and intermediary effect
Based on the balanced panel data of 30 provincial-level regions from 2007 to 2021,this paper employs the multi-period difference-in-differences model,mediation effect model,and spatial difference-in-differences model to examine the direct effect,mediating effect,and spillover effect of the carbon emissions trading pilot policy on provincial carbon emissions equity.The research results show that:(1)The implementation of the pilot carbon trading policy will have a significant positive impact on the improvement of provincial carbon emission equity,and this impact still holds after a series of tests.(2)Analysis of the impact mechanism shows that,the pilot carbon trading policy has significantly increased the level of equity of carbon emissions by increasing the intensity of environmental regulation,optimizing the energy structure and promoting green technology innovation.(3)The impact of the pilot carbon trading policy on the equity of provincial carbon emissions has a positive spatial spillover effect,this effect through"polarization effect"and"trickle-down effect"on"geographical proximity"and"economic proximity"provincial-level regions have a significant positive impact.
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