Spatiotemporal variations of dissolved organic matter in a typical multi-source watershed in northern China: a fluorescent evidence

被引:0
|
作者
Baichuan Jin
Zuhong Lin
Weiyi Liu
Yong Xiao
Yuan Meng
Xiaolong Yao
Tingting Zhang
机构
[1] Research Centre for Resource and Environment,Department of Environmental Science and Engineering
[2] Beijing University of Chemical Technology,Department of Environmental Science and Engineering
[3] Beijing Technology and Business University,undefined
来源
Environmental Science and Pollution Research | 2022年 / 29卷
关键词
North Canal River watershed; Multi-source; Spatiotemporal variations; Dissolved organic matter;
D O I
暂无
中图分类号
学科分类号
摘要
The amount of dissolved organic matter (DOM) in a multi-source watershed is important for complete management and assessing the river basin’s long-term safety. Based on this, we study the composition, spatiotemporal changes, and primary sources of DOM using the excitation-emission matrix (EEM) and parallel factor analysis (PARAFAC). The relationship between DOM composition and water quality was also discussed. It was found that the DOM in the North Canal River watershed was composed of two similar humic acid-like components (230, 335/400 nm and 260, 360/450 nm) and a tryptophan-like component (280/290–350 nm). The intensity of DOM shows obvious seasonal spatiotemporal variations. In terms of time, the relative concentration of DOM in winter is significantly higher than that in other seasons due to the influence of water volume, temperature, and photochemical degradation factors. As for the aspect of space, under the combined effect of land use and multiple sources of pollution, the relative concentration of tryptophan-like in the mainstream was significantly higher than tributaries, while the relative concentration of humic-like components in the tributaries was higher than that in the mainstream. The chief sources of DOM in the North Canal River watershed include human-derived point sources and agricultural non-point sources in the main channel, as well as terrestrial and microbiological sources in the tributaries. Moreover, the composition of DOM is significantly related to water quality indicators, especially nitrogen and phosphorus, which shows that DOM can have an indicative impact on the trophic status in the North Canal River. The findings of this study could have a predictive effect and provide a scientific foundation for water quality monitoring and pollution control in the North Canal River watershed.
引用
收藏
页码:20517 / 20529
页数:12
相关论文
共 50 条
  • [21] Size and resin fractionations of dissolved organic matter and trihalomethane precursors from four typical source waters in China
    Wei, Qunshan
    Wang, Dongsheng
    Wei, Qia
    Qiao, Chunguang
    Shi, Baoyou
    Tang, Hongxiao
    ENVIRONMENTAL MONITORING AND ASSESSMENT, 2008, 141 (1-3) : 347 - 357
  • [22] Impact of environmental factors on the spatiotemporal variability of soil organic matter: a case study in a typical small Mollisol watershed of Northeast China
    Hu, Wei
    Shen, Qingsong
    Zhai, Xingyu
    Du, Shuli
    Zhang, Xingyi
    JOURNAL OF SOILS AND SEDIMENTS, 2021, 21 (02) : 736 - 747
  • [23] Impact of environmental factors on the spatiotemporal variability of soil organic matter: a case study in a typical small Mollisol watershed of Northeast China
    Wei Hu
    Qingsong Shen
    Xingyu Zhai
    Shuli Du
    Xingyi Zhang
    Journal of Soils and Sediments, 2021, 21 : 736 - 747
  • [24] Assessing the spatiotemporal variability of dissolved organic matter fluorescence composition in the Lake George, NY watershed
    Goranov, Aleksandar I.
    Swinton, Mark W.
    Winkler, David A.
    Farrell, Jeremy L.
    Nierzwicki-Bauer, Sandra A.
    Wagner, Sasha
    BIOGEOCHEMISTRY, 2024, 167 (06) : 849 - 870
  • [25] Characterization and variations of dissolved organic matter in the Lake Taihu area of China
    Qiu, Yong
    Shi, Hanchang
    Jing, He
    Liu, Rui
    Cai, Qiang
    Takemura, Minoru
    Haraguchi, Satoshi
    WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY, 2012, 12 (04): : 439 - 450
  • [26] Spatiotemporal patterns and source attribution of nitrogen pollution in a typical headwater agricultural watershed in Southeastern China
    Wenjun Chen
    Bin He
    Daniel Nover
    Weili Duan
    Chuan Luo
    Kaiyan Zhao
    Wen Chen
    Environmental Science and Pollution Research, 2018, 25 : 2756 - 2773
  • [27] Spatiotemporal patterns and source attribution of nitrogen pollution in a typical headwater agricultural watershed in Southeastern China
    Chen, Wenjun
    He, Bin
    Nover, Daniel
    Duan, Weili
    Luo, Chuan
    Zhao, Kaiyan
    Chen, Wen
    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2018, 25 (03) : 2756 - 2773
  • [28] Characterization and spatiotemporal variations of fluorescent dissolved organic matter in leachate from old landfill-derived incineration residues and incombustible waste
    Nguyen, Thi Ngoc
    Kusakabe, Taketoshi
    Takaoka, Masaki
    PLOS ONE, 2024, 19 (06):
  • [29] Characteristics and Source of Dissolved Organic Matter in Lake Hulun, A Large Shallow Eutrophic Steppe Lake in Northern China
    Wang, Wenwen
    Zheng, Binghui
    Jiang, Xia
    Chen, Junyi
    Wang, Shuhang
    WATER, 2020, 12 (04)
  • [30] Characteristics of Dissolved Organic Matter in Sediments of Typical Lakes in Southeastern Hubei Province, China
    Wu, Chao
    Wu, Xiaodong
    Ge, Xuguang
    Feng, Lian
    Tan, Ya
    Yang, Jiuyun
    Ren, Weixiang
    Zou, Min
    INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2022, 19 (12)