Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院海洋生物资源可持续利用重点实验室

	Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes
	Arbi, I; Wu, YC; Zhang, JP; Liu, SL; Jiang, ZJ; Huang, XP; Macreadie, PI
刊名	ATMOSPHERIC ENVIRONMENT
	2018
卷号	182 页码:75-86
通讯作者	zhangjingping@scsio.ac.cn ; xphuang@scsio.ac.cn
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 (delta N-15 and delta O-18) 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 delta N-15-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. delta O-18 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.
学科主题	Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
关键词[WOS]	Nitrogen deposition ; Air pollution ; Sources ; Isotopic composition ; Daya bay
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16938]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
推荐引用方式 GB/T 7714	Arbi, I,Wu, YC,Zhang, JP,et al. Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes[J]. ATMOSPHERIC ENVIRONMENT,2018,182:75-86.
APA	Arbi, I.,Wu, YC.,Zhang, JP.,Liu, SL.,Jiang, ZJ.,...&Macreadie, PI.(2018).Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes.ATMOSPHERIC ENVIRONMENT,182,75-86.
MLA	Arbi, I,et al."Nitrogen deposition in precipitation to a monsoon-affected eutrophic embayment: Fluxes, sources, and processes".ATMOSPHERIC ENVIRONMENT 182(2018):75-86.