关键词: 减污降碳, 协同效应, 边际减排成本, 量化评估

Abstract: Realizing the co-benefits of air pollution reduction and carbon emission reduction is a basic requirement for realizing the comprehensive green transformation of economic and social development in the new era. Inspired by the scope economy, this paper constructs a new quantitative evaluation method for the co-benefits of air pollution reduction and carbon emission reduction from the perspective of marginal abatement cost, and uses this method to empirically investigate the co-benefits of air pollution reduction and carbon emission reduction in China. The results show that: At the national level, the annual average growth of the co-benefits of air pollution and carbon emission reduction in China is 2.63% from 2006 to 2018. Since the 18th National Congress of the Communist Party of China, the co-benefits of pollution and carbon emission reduction has increased more significantly, with an annual average growth of 4.41%. Under the three scenarios of ecological priority, carbon emission reduction priority and energy revolution, China?s co-benefits of air pollution and carbon emission reduction can be improved by 29%~43%. This paper not only provides methodological support for quantitative evaluation of the co-benefits of air pollution and carbon emission reduction, but also provides reference for promoting the co-benefits during the 14th Five-Year Plan period.

Key words: Air Pollution Reduction and Carbon Emission Reduction, Co-Benefits, Marginal Abatement Cost, Quantitative Evaluation