科研成果
  获奖  
  论文  
  专著  
  专利  
  新品种  
  软件著作权  
  成果转化  
  · 最新动态
  · 人才招聘
  · 专题
  · 科普旅游
  · 学会学报
  · 信息服务
  您现在的位置:首页 > 科研成果 > 论文
 
论文编号:
作者:
作者: Jie Yuan, Siyue Li, Xi Han, Qiuyang Chen, Xiaoli Cheng, Quanfa Zhang*
作者所在部门:
作者所在部门:
通讯作者:
通讯作者: Quanfa Zhang*
刊物名称:
刊物名称: Science of The Total Environment
论文题目:
论文题目: Characterization and source identification of nitrogen in a riverine system of monsoon-climate region, China
摘要:
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 4.28 mg l− 1, and 0.33 to 2.78 mg l− 1, respectively.The 15N 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 δ15N-SPN and δ15N-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.

年: 2017
卷:
期:
页: http://dx.doi.org/10.1016/j.scitotenv.2017.03.042
收录类别:
影响因子:
论文出处:
论文出处:
外单位作者单位:
外单位作者单位:
备注:

关闭窗口