干旱区生态环境知识资源中心(Arid): Tracing the sources of nitrate in the rivers and lakes of the southern areas of the Tibetan Plateau using dual nitrate isotopes

Arid

DOI	10.1016/j.scitotenv.2018.12.149
	Tracing the sources of nitrate in the rivers and lakes of the southern areas of the Tibetan Plateau using dual nitrate isotopes
	Hu Mingming 1,2; Wang Yuchun 1,2; Du Pengcheng 1,3; Shui Yong 4; Cai Aimin 3; Lv Cong 1; Bao Yufei 1,2; Li Yanhui 5; Li Shanze 1,2; Zhang Panwei 1,2
通讯作者	Wang Yuchun
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	658 页码:132-140
英文摘要	Based on a quantitative analysis of nitrate concentrations, the nitrate sources and temporal variability of the rivers, lakes, and wetlands of Tibet were assessed for the first time using dual isotope technology. Water samples were collected once in July 2017 for analysis of nitrate concentration and isotopic composition. The overall values of delta N-15-NO3- and delta O-18-NO3- ranged from +1.8 parts per thousand to +23.0 parts per thousand, and from -6.3 parts per thousand to +222 parts per thousand respectively. Duel isotopic composition suggested that nitrification of soil organic nitrogen was the main source of nitrate in the Yalu Tsangpo River. Furthermore, anthropogenic nitrogen inputs become more important in downstream than upstream because of intensive agricultural activities and urban input. In the rivers of the Ngari District, nitrate is mainly derived from desert deposits, manure and sewage, and chemical fertilisers. Different rivers show different characteristics of nitrate sources depending on the location, topography, lanclform, and climate of the river basins. Animal manure, nitrification of soil organic matter, and desert deposits are mainly responsible for the shifting of nitrate isotopic signatures in lakes, which are minimally affected by human activities. In wetlands, biological nitrification and denitrification could be the main processes of nitrogen migration and transformation. These results provide useful information in revealing the fate of nitrate in different aquatic ecosystems and different areas of Tibet. (C) 2018 Elsevier B.V. All tights reserved.
英文关键词	Nitrate source Tibetan Plateau Dual nitrate isotopes
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000456175700016
WOS关键词	STABLE-ISOTOPES ; SEASONAL-VARIATIONS ; MISSISSIPPI RIVER ; NITROGEN ; DENITRIFICATION ; SYSTEM ; OXYGEN ; IDENTIFICATION ; INDICATOR ; POLLUTION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218650
作者单位	1.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 10038, Peoples R China; 2.China Inst Water Resources & Hydropower Res, Dept Water Environm, Beijing 10038, Peoples R China; 3.China Three Gorges Univ, Yichang 443002, Peoples R China; 4.Tibet Autonomous Reg Hydrol & Water Resources Sur, Lhasa 850000, Tibet Autonomou, Peoples R China; 5.Taiyuan Normal Univ, Taiyuan 030619, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Hu Mingming,Wang Yuchun,Du Pengcheng,et al. Tracing the sources of nitrate in the rivers and lakes of the southern areas of the Tibetan Plateau using dual nitrate isotopes[J],2019,658:132-140.
APA	Hu Mingming.,Wang Yuchun.,Du Pengcheng.,Shui Yong.,Cai Aimin.,...&Zhang Panwei.(2019).Tracing the sources of nitrate in the rivers and lakes of the southern areas of the Tibetan Plateau using dual nitrate isotopes.SCIENCE OF THE TOTAL ENVIRONMENT,658,132-140.
MLA	Hu Mingming,et al."Tracing the sources of nitrate in the rivers and lakes of the southern areas of the Tibetan Plateau using dual nitrate isotopes".SCIENCE OF THE TOTAL ENVIRONMENT 658(2019):132-140.