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Seasonal pattern of ammonium N-15 natural abundance in precipitation at a rural forested site and implications for NH3 source partitioning

文献类型：期刊论文

作者Li, Shanlong3,4; Li, Zhengjie1,4; Zhu, Feifei3,4; Zhang, Na2; Fang, Yunting3,4; Fu, Pingqing7,8; Huang, Shaonan1,3,4; Elliott, Emily M.5; Felix, J. David6; Pan, Yuepeng7
刊名ENVIRONMENTAL POLLUTION
出版日期2019-04-01
卷号247页码:541-549
关键词Nitrogen deposition Stable nitrogen isotopes Ammonium Nitrogen isotope fractionation Precipitation Northeast China
ISSN号0269-7491
DOI10.1016/j.envpol.2019.01.023
英文摘要Excess ammonia (NH3) emissions and deposition can have negative effects on air quality and terrestrial ecosystems. Identifying NH3 sources is a critical step for effectively reducing NH3 emissions, which are generally unregulated around the world. Stable nitrogen isotopes (delta N-15) of ammonium (NH4+) in precipitation have been directly used to partition NH3 sources. However, nitrogen isotope fractionation during atmospheric processes from NH3 sources to sinks has been previously overlooked. Here we measured delta N-15-NH4+ in precipitation on a daily basis at a rural forested site in Northeast China over three years to examine its seasonal pattern and attempt to constrain the NH3 sources. We found that the NH4+ concentrations in precipitation ranged from 5 to 1265 mu M, and NH4+ accounted for 65% of the inorganic nitrogen deposition (20.0 kg N ha(-1) yr(-1)) over the study period. The delta N-15 values of NH4+ fluctuated from -24.6 to +16.2 parts per thousand (average -6.5 parts per thousand) and showed a repeatable seasonal pattern with higher values in summer (average -2.3 parts per thousand) than in winter (average -16.4 parts per thousand), which could not be explained by only the seasonal changes in the NH3 sources. Our results suggest that in addition to the NH3 sources, isotope equilibrium fractionation contributed to the seasonal pattern of delta N-15-NH+4 in precipitation, and thus, nitrogen isotope fractionation should be considered when partitioning NH3 sources based on delta N-15-NH4+ in precipitation. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目National Key R&D Program of China[2017YFC0212700] ; National Key R&D Program of China[2016YFA0600802] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences[QYZDB-SSWDQC002] ; National Natural Science Foundation of China[41773094] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105-02] ; K.C.Wong Education Foundation
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000460844800059
出版者ELSEVIER SCI LTD
源URL[http://210.72.129.5/handle/321005/123949]  
专题中国科学院沈阳应用生态研究所
通讯作者Fang, Yunting
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
2.Shijiazhuang Univ, Coll Resource & Environm Sci, Shijiazhuang 050035, Hebei, Peoples R China
3.Chinese Acad Sci, Qingyuan Forest CERN, Shenyang 110014, Liaoning, Peoples R China
4.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Mangement, Shenyang 110164, Liaoning, Peoples R China
5.Univ Pittsburgh, Dept Geol & Environm Sci, 4107 OHara St, Pittsburgh, PA 15260 USA
6.Texas A&M Univ, Dept Phys & Environm Sci, 6300 Ocean Dr, Corpus Christi, TX 78414 USA
7.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
8.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shanlong,Li, Zhengjie,Zhu, Feifei,et al. Seasonal pattern of ammonium N-15 natural abundance in precipitation at a rural forested site and implications for NH3 source partitioning[J]. ENVIRONMENTAL POLLUTION,2019,247:541-549.
APA Li, Shanlong.,Li, Zhengjie.,Zhu, Feifei.,Zhang, Na.,Fang, Yunting.,...&Liu, Dongwei.(2019).Seasonal pattern of ammonium N-15 natural abundance in precipitation at a rural forested site and implications for NH3 source partitioning.ENVIRONMENTAL POLLUTION,247,541-549.
MLA Li, Shanlong,et al."Seasonal pattern of ammonium N-15 natural abundance in precipitation at a rural forested site and implications for NH3 source partitioning".ENVIRONMENTAL POLLUTION 247(2019):541-549.

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来源：沈阳应用生态研究所

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