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Characterization and source identification of nitrogen in a riverine system of monsoon-climate region, China

文献类型：期刊论文

作者Yuan, Jie1,2; Li, Siyue3; Han, Xi1,2; Chen, Qiuyang1,2; Cheng, Xiaoli1; Zhang, Quanfa1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2017-08-15
卷号592页码:608-615
关键词Jinshui River Nitrogen pollution Isotopic enrichments Water quality Headwaters
ISSN号0048-9697
DOI10.1016/j.scitotenv.2017.03.042
通讯作者Zhang, QF (reprint author), Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China.
英文摘要There are increasing concerns in nitrogen (N) pollution worldwide, especially in aquatic ecosystems, and thus quantifying its sources in waterways is critical for pollution prevention and control. In this study, we investigated the spatio-temporal variabilities of inorganic N concentration (i. e., NO3-, NH4+) and total dissolved N (TDN) and identified their sources in waters and suspended matters using an isotopical approach in the Jinshui River, a river with a length of 87 km in the monsoon-climate region of China. The spatio-temporal inorganic N concentrations differed significantly along the longitudinal gradient in the river network. The NO3-, NH4+ and TDN concentrations ranged from 0.02 to 1.12 mg l(- 1), 0.03 to 4.28mg l(- 1), and 0.33 to 2.78 mg l(- 1), respectively. The N-15 tracing studies demonstrated that N in suspended organic matter was in the form of suspended particulate nitrogen (SPN) and was primarily from atmospheric deposition and agricultural fertilizer. In contrast, N in stream waters was mainly in the form of nitrate and was from atmospheric deposition, fertilizers, soil, and sewage. Meanwhile, both delta N-15- SPN and delta N-15-NO3- peaked in the rainy season (i. e., July) because of higher terrigenous sources via rain runoff, demonstrating the dominant diffusive N sources in the catchment. Thus, our results could provide critical information on N pollution control and sustainable watershed management of the riverine ecosystem in monsoon- climate region. (C) 2017 Elsevier B.V. All rights reserved.
资助项目National Natural Science Foundation of China[31130010] ; National Natural Science Foundation of China[31200354]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000400082100064
出版者ELSEVIER SCIENCE BV
源URL[http://172.16.51.4:88/handle/2HOD01W0/174]  
专题生态水文研究中心
通讯作者Zhang, Quanfa
作者单位1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Yuan, Jie,Li, Siyue,Han, Xi,et al. Characterization and source identification of nitrogen in a riverine system of monsoon-climate region, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,592:608-615.
APA Yuan, Jie,Li, Siyue,Han, Xi,Chen, Qiuyang,Cheng, Xiaoli,&Zhang, Quanfa.(2017).Characterization and source identification of nitrogen in a riverine system of monsoon-climate region, China.SCIENCE OF THE TOTAL ENVIRONMENT,592,608-615.
MLA Yuan, Jie,et al."Characterization and source identification of nitrogen in a riverine system of monsoon-climate region, China".SCIENCE OF THE TOTAL ENVIRONMENT 592(2017):608-615.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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