Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values

doi:10.2166/wst.2012.193

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values
	Chen, ZX (Chen, Zi-Xiang)[1,2,3,4]; Liu, G (Liu, Guang)[1,2,3,4]; Liu, WG (Liu, Wei-Guo)[3]; Lam, MHW (Lam, Michael H. W.)[2,4]; Liu, GJ (Liu, Gui-Jian)[1,2]; Yin, XB (Yin, Xue-Bin)[1,2]
刊名	WATER SCIENCE AND TECHNOLOGY
	2012-09-30
卷号	66 期号:3 页码:536-542
关键词	Denitrification Dual Isotopes Nitrate Source Nitrification Taihu Lake
DOI	10.2166/wst.2012.193
文献子类	期刊论文
英文摘要	In the present study, delta N-15 and delta O-18-NO3- values, as well as concentrations of some major ion tracers were determined in seasonal water samples from Taihu Lake and major watersheds to investigate the temporal and spatial variations of nitrate sources and assess the underlying nitrogen (N) biogeochemistry process. The results lead to the conclusion that the nitrate concentrations in Taihu Lake are lower in summer than that in winter due to the dilution effect of wet deposition. In winter, sewage and manure were the primary nitrate sources in major inflow rivers and North Taihu Lake (NTL), while nitrate sources in East Taihu Lake (ETL) probably derived from soil organic N. In summer, atmospheric deposition and sewage/manure inputs appear to play an important role in controlling the distribution of nitrates in the whole lake. The delta O-18-NO3- values suggest that the nitrate produced from microbial nitrification is another major nitrate source during both winter and summer months. The variations in isotopic values in nitrate suggest denitrification enriched the heavier isotopes of nitrate in NTL in winter and in ETL in summer.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/10186]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Yin, XB (Yin, Xue-Bin)[1,2]
作者单位	1.School of Earth and Space Science,University of Science and Technology of China(USTC), Hefei, Anhui 230026, China; 2.Advanced Laboratory for Environmental Researchand Technology,Joint Advanced Research Center, USTC-CityU,Suzhou, Jiangsu 215123, China; 3.State Key Laboratory of Loess and QuaternaryGeology, IEE, CAS, Xi’an, Shanxi 710075,China; 4.Department of Biology and Chemistry,City University of Hong Kong,83 Tat Chee Avenue,Kowloon, Hong Kong SAR, China
推荐引用方式 GB/T 7714	Chen, ZX ,Liu, G ,Liu, WG ,et al. Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values[J]. WATER SCIENCE AND TECHNOLOGY,2012,66(3):536-542.
APA	Chen, ZX ,Liu, G ,Liu, WG ,Lam, MHW ,Liu, GJ ,&Yin, XB .(2012).Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values.WATER SCIENCE AND TECHNOLOGY,66(3),536-542.
MLA	Chen, ZX ,et al."Identification of nitrate sources in Taihu Lake and its major inflow rivers in China, using delta N-15-NO3- and delta O-18-NO3- values".WATER SCIENCE AND TECHNOLOGY 66.3(2012):536-542.