A probe into the acid deposition mitigation path in China over the last four decades and beyond

Yu, Q., Ge, X., Zheng, H., Xing, J., Duan, L., Lv, D., Ding, D., Dong, Z., et al. (2024). A probe into the acid deposition mitigation path in China over the last four decades and beyond. National Science Review 11 (4) nwae007. 10.1093/nsr/nwae007.

[thumbnail of nwae007.pdf]
nwae007.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB) | Preview


China currently has the highest acid deposition globally, yet research on its status, impacts, causes and controls is lacking. Here, we compiled data and calculated critical loads regarding acid deposition. The results showed that the abatement measures in China have achieved a sharp decline in the emissions of acidifying pollutants and a continuous recovery of precipitation pH, despite the drastic growth in the economy and energy consumption. However, the risk of ecological acidification and eutrophication showed no significant decrease. With similar emission reductions, the decline in areas at risk of acidification in China (7.0%) lags behind those in Europe (20%) or the USA (15%). This was because, unlike Europe and the USA, China's abatement strategies primarily target air quality improvement rather than mitigating ecological impacts. Given that the area with the risk of eutrophication induced by nitrogen deposition remained at 13% of the country even under the scenario of achieving the dual targets of air quality and carbon dioxide mitigation in 2035, we explored an enhanced ammonia abatement pathway. With a further 27% reduction in ammonia by 2035, China could largely eliminate the impacts of acid deposition. This research serves as a valuable reference for China's future acid deposition control and for other nations facing similar challenges.

Item Type: Article
Uncontrolled Keywords: acid deposition; acidification; ammonia abatement; critical loads; eutrophication
Research Programs: Energy, Climate, and Environment (ECE)
Energy, Climate, and Environment (ECE) > Pollution Management (PM)
Depositing User: Luke Kirwan
Date Deposited: 20 Mar 2024 09:22
Last Modified: 20 Mar 2024 09:22
URI: https://pure.iiasa.ac.at/19570

Actions (login required)

View Item View Item