长三角地区减污降碳协同效应评估OA北大核心CSSCICSTPCD

The Yangtze River Delta is advancing efforts to synergize the reduction of pollution and carbon emissions,yet there is scarce literature quantitatively assessing its potential for such synergy.This study utilized the Data Envelopment Analysis method to cal-culate the marginal abatement costs of PM2.5 and CO2 from a total factor perspective for the Yangtze River Delta.By comparing the cost changes between independent reduction and synergistic reduction,the potential for pollution and carbon reduction synergy was estimat-ed at the regional,provincial,and municipal levels.The study also simulated the changes in synergistic effects under different develop-ment scenarios.The findings were as follows:① From 2011 to 2021,compared to independent reduction,the marginal costs for both pollution reduction and carbon emission reduction in the Yangtze River Delta significantly decreased in the synergistic reduction sce-nario,with marginal abatement costs of pollution reduction reduced by 35.28%and those of carbon emission reduction by 32.41%.② At the provincial level,there was a clear heterogeneity among the marginal abatement costs of the three provinces and one municipal-ity in the Yangtze River Delta,with Anhui having the lowest costs for both pollution reduction and carbon emission reduction,while Shanghai had relatively higher costs.③ Compared to independent reduction,Anhui Province exhibited the most significant reduction in marginal abatement costs under synergistic reduction,highlighting its outstanding potential for synergizing the reduction of pollution and carbon emissions.④ At the municipal level,prioritizing low-carbon development was the governance approach minimizing pollu-tion reduction costs;prioritizing clean air was the strategy minimizing carbon emission reduction costs;and aiming for the maximization of synergistic effects required different cities to explore synergistic strategies for reducing pollution and carbon emissions matching their own stages of economic development,resource endowments,and environmental levels.This study,by estimating the marginal abatement costs of pollution reduction and carbon emission reduction in the Yangtze River Delta,reveals the temporal patterns and spatial charac-teristics of the region's potential for synergizing the reduction of pollution and carbon emissions and provides valuable insights for scien-tifically advancing such efforts in the Yangtze River Delta.