Direct measurement of dissolved N-2 and denitrification along a subtropical river-estuary gradient, China (vol 66, pg 125, 2013)

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	Direct measurement of dissolved N-2 and denitrification along a subtropical river-estuary gradient, China (vol 66, pg 125, 2013)
	Wu, Jiezhong ; Chen, Nengwang ; Hong, Huasheng ; Lu, Ting ; Wang, Longjian ; Chen, Zhuhong ; Chen NW(陈能汪) ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1016/j.marpolbul.2014.05.016
	2014-07-15
英文摘要	The spatial pattern and seasonal variation of denitrification were investigated during 2010-2011 in the Jiulong River Estuary (JRE) in southeast China. Dissolved N₂ was directly measured by changes in the N₂:Ar ratio. The results showed that excess dissolved N₂ ranged from -9.9 to 76.4 μmol L⁻¹. Tidal mixing leads to a seaward decline of dissolved gaseous concentrations and water-air fluxes along the river-estuary gradient. Denitrification at freshwater sites varied between seasons, associated with changes in N input and water temperature. The denitrification process was controlled by the nitrate level at freshwater sites, and the excess dissolved N₂ observed at the tidal zone largely originated from upstream water transport. Compared to other estuaries, JRE has a relative low gaseous removal efficiency (E(d)=12% of [DIN]; annual N removal=24% of DIN load), a fact ascribed to strong tidal mixing, coarse-textured sediment with shallow depth before bedrock and high riverine DIN input.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89936]
专题	环境生态－已发表论文
推荐引用方式 GB/T 7714	Wu, Jiezhong,Chen, Nengwang,Hong, Huasheng,et al. Direct measurement of dissolved N-2 and denitrification along a subtropical river-estuary gradient, China (vol 66, pg 125, 2013)[J]. http://dx.doi.org/10.1016/j.marpolbul.2014.05.016,2014.
APA	Wu, Jiezhong.,Chen, Nengwang.,Hong, Huasheng.,Lu, Ting.,Wang, Longjian.,...&洪华生.(2014).Direct measurement of dissolved N-2 and denitrification along a subtropical river-estuary gradient, China (vol 66, pg 125, 2013).http://dx.doi.org/10.1016/j.marpolbul.2014.05.016.
MLA	Wu, Jiezhong,et al."Direct measurement of dissolved N-2 and denitrification along a subtropical river-estuary gradient, China (vol 66, pg 125, 2013)".http://dx.doi.org/10.1016/j.marpolbul.2014.05.016 (2014).