DOI: 10.1016/j.atmosenv.2018.03.037
Scopus记录号: 2-s2.0-85044159766
论文题名: Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes
作者: Wu Y ; , Zhang J ; , Liu S ; , Jiang Z ; , Arbi I ; , Huang X ; , Macreadie P ; I
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 182 起始页码: 75
结束页码: 86
语种: 英语
英文关键词: Air pollution
; Daya bay
; Isotopic composition
; Nitrogen deposition
; Sources
Scopus关键词: Air pollution
; Atmospheric thermodynamics
; Barium compounds
; Coal dust
; Dust
; Elementary particle sources
; Eutrophication
; Fossil fuels
; Fuels
; Isotopes
; Nitrates
; Nitrogen
; Pollution
; Vehicles
; Backward trajectory
; Daya Bay
; Dissolved organic nitrogen
; Dry and wet depositions
; Economic development
; Fossil fuel combustion
; Isotopic composition
; Nitrogen deposition
; Coal combustion
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Daya Bay in the South China Sea (SCS) has experienced rapid nitrogen pollution and intensified eutrophication in the past decade due to economic development. Here, we estimated the deposition fluxes of nitrogenous species, clarified the contribution of nitrogen from precipitation and measured ions and isotopic composition (δ15N and δ18O) of nitrate in precipitation in one year period to trace its sources and formation processes among different seasons. We found that the deposition fluxes of total dissolved nitrogen (TDN), NO3 −, NH4 +, NO2 −, and dissolved organic nitrogen (DON) to Daya Bay were 132.5, 64.4 17.5, 1.0, 49.6 mmol m−2∙yr−1, respectively. DON was a significant contributor to nitrogen deposition (37% of TDN), and NO3 − accounted for 78% of the DIN in precipitation. The nitrogen deposition fluxes were higher in spring and summer, and lower in winter. Nitrogen from precipitation contributed nearly 38% of the total input of nitrogen (point sources input and dry and wet deposition) in Daya Bay. The δ15N-NO3 - abundance, ion compositions, and air mass backward trajectories implicated that coal combustion, vehicle exhausts, and dust from mainland China delivered by northeast monsoon were the main sources in winter, while fossil fuel combustion (coal combustion and vehicle exhausts) and dust from PRD and southeast Asia transported by southwest monsoon were the main sources in spring; marine sources, vehicle exhausts and lightning could be the potential sources in summer. δ18O results showed that OH pathway was dominant in the chemical formation process of nitrate in summer, while N2O5+ DMS/HC pathways in winter and spring. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82880
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Beijing, China; Blue Carbon Lab, Centre for Integrative Ecology, School of Life and Environmental Sciences, Faculty of Science Engineering & Built Environment, Burwood, Deakin UniversityVictoria, Australia
Recommended Citation:
Wu Y,, Zhang J,, Liu S,et al. Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes[J]. Atmospheric Environment,2018-01-01,182