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

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

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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.

acid depositioncritical loadsacidificationeutrophicationammonia abatement

Qian Yu、Xiaodong Ge、Haotian Zheng、Jia Xing、Lei Duan、Dongwei Lv、Dian Ding、Zhaoxin Dong、Yisheng Sun、Posch Maximilian、Danni Xie、Yu Zhao、Bin Zhao、Shuxiao Wang、Jan Mulder、Thorjorn Larssen、Jiming Hao

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State Key Laboratory of Environmental Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084,China

State Key Laboratory of Pollution Control &Resource Reuse and School of the Environment,Nanjing University,Nanjing 210023,China

State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex,School of Environment,Tsinghua University,Beijing 100084,China

International Institute for Applied System Analysis(IIASA),Laxenburg A-2361,Austria

School of Land Engineering,Chang'an University,Xi'an 710064,China

Faculty of Environmental Sciences and Natural Resource Management,Norwegian University of Life Sciences,Ås 5003,Norway

Norwegian Institute for Water Research,Oslo 0349,Norway

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国家重点研发计划国家自然科学基金

2023YFC370850042277204

2024

10.1093/nsr/nwae007

国家科学评论(英文版)

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ISSN：
年,卷(期)：2024.11(4)
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