气候变化领域集成服务门户(CCPortal): Hysteresis response of wet nitrate deposition to emission reduction in Chinese terrestrial ecosystems

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DOI	10.1016/j.atmosenv.2021.118555
	Hysteresis response of wet nitrate deposition to emission reduction in Chinese terrestrial ecosystems
	Xi Y.; Zhu J.; Zhang Q.; Dai G.; He N.; Wang Q.
发表日期	2021
ISSN	1352-2310
卷号	260
英文摘要	China is currently undergoing a massive socio-economic transformation, and has implemented a series of emission reduction measures to control air pollution. The response of atmospheric deposition to emission reduction measures provides direct evidence for the efficiency of environmental policies. Here, we consistently measured SO42−, NO3−, and NH4+ concentrations in rainfall in 43 typical Chinese ecosystems from 2013 to 2018 to reveal their spatiotemporal dynamics and the factors influencing them. The results showed that wet acid deposition (defined as 2SO42− + NO3−) in China exhibited an overall decline throughout 2013–2018, mostly due to decreased SO42− deposition. Despite evidence of a decline in NOX emissions in recent years, wet NO3− deposition in Chinese terrestrial ecosystems showed no significant trends during 2013–2018, implying a hysteresis response of wet NO3− deposition to emission reductions. The potential reasons for this response include a lack of evaluation in natural NOX emissions (e.g. NOX emissions from soil), large variations in wet scavenging, increased atmospheric oxidation capacity, which improves the conversion efficiency of NOX to HNO3, and higher NH3 emission levels to enhance the conversion of HNO3 to nitrate. Wet NH4+ deposition exhibited a relatively stable trend in recent years, which is consistent with the NH3 emissions in China. Energy consumption (especially coal combustion) and traffic can explain approximately 76% of the spatial variation in acid deposition. Our results demonstrate that controlling atmospheric SO2 emissions over recent decades has been effective in China, whereas N deposition in China requires more attention. Further, simultaneous control of NOX and NH3 emissions should be emphasized in the future to reduce acid deposition and the associated ecological risks. © 2021 Elsevier Ltd
关键词	Acid deposition China Dynamics Nitrogen Pollution Sulfate
语种	英语
scopus关键词	Air pollution; Ammonia; Coal combustion; Deposition; Dynamics; Emission control; Energy utilization; Environmental protection; Hysteresis; Nitrogen; Nitrogen oxides; Sulfur compounds; Acid deposition; China; Emission reduction; HNO$-3$; Hysteresis response; NH$-3$; Reduction measures; SO$-4$/$+2-$; Sulphates; Terrestrial ecosystems; Nitrates; ammonia; coal; nitrate; nitric acid; nitrogen; rain; sulfate; acid deposition; atmospheric deposition; concentration (composition); deposition; hysteresis; nitrate; spatial variation; spatiotemporal analysis; sulfur dioxide; acid deposition; air pollution control; Article; atmospheric deposition; China; combustion; controlled study; dynamics; ecology; ecosystem; energy consumption; environmental policy; hysteresis; nitrogen deposition; oxidation; risk; traffic; wet deposition; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248350
作者单位	Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; Research Station of Changbai Mountain Forest Ecosystems, Chinese Academy of Sciences, Antu, 133613, China; Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, China
推荐引用方式 GB/T 7714	Xi Y.,Zhu J.,Zhang Q.,et al. Hysteresis response of wet nitrate deposition to emission reduction in Chinese terrestrial ecosystems[J],2021,260.
APA	Xi Y.,Zhu J.,Zhang Q.,Dai G.,He N.,&Wang Q..(2021).Hysteresis response of wet nitrate deposition to emission reduction in Chinese terrestrial ecosystems.ATMOSPHERIC ENVIRONMENT,260.
MLA	Xi Y.,et al."Hysteresis response of wet nitrate deposition to emission reduction in Chinese terrestrial ecosystems".ATMOSPHERIC ENVIRONMENT 260(2021).