The spatial differences of the synergy between CO 2 and air pollutant emissions in China's 296 cities.

The emissions reduction of CO ₂ and air pollutants are the main task in China. The two have the same roots and they interact with each other. However, CO ₂ and air pollutants are quite different in space, so it is of great practical significance to explore the spatial differences of their synergy. As PM _2.5 and O ₃ are more concerned at present, thus, this paper examined the decoupling of CO ₂ , PM _2.5 and O ₃ from GDP in China's 296 cities using the latest available data from 2015 to 2016. And the spatial differences of synergy among CO ₂ , PM _2.5 and O ₃ were quantitatively analyzed by using spatial autocorrelation analysis and geographically weighted regression model. The results showed that: (1) The cities achieving the three synergy emissions reduction were mainly in the southeast of China. (2) Only 26 cities had achieved the strong decoupling of CO ₂ , PM _2.5 and O ₃ from GDP. (3) The synergy characteristics between CO ₂ and PM _2.5 , CO ₂ and O ₃ were different. This paper put forward the policies according to the conclusions.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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