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Contrasting Eutrophication Risks and Countermeasures in Different Water Bodies: Assessments to Support Targeted Watershed Management

Author

Listed:
  • Tong Li

    (College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

  • Chunli Chu

    (College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

  • Yinan Zhang

    (College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

  • Meiting Ju

    (College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

  • Yuqiu Wang

    (College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)

Abstract

Eutrophication is a major problem in China. To combat this issue, the country needs to establish water quality targets, monitoring systems, and intelligent watershed management. This study explores a new watershed management method. Water quality is first assessed using a single factor index method. Then, changes in total nitrogen/total phosphorus (TN/TP) are analyzed to determine the limiting factor. Next, the study compares the eutrophication status of two water function districts, using a comprehensive nutritional state index method and geographic information system (GIS) visualization. Finally, nutrient sources are qualitatively analyzed. Two functional water areas in Tianjin, China were selected and analyzed: Qilihai National Wetland Nature Reserve and Yuqiao Reservoir. The reservoir is a drinking water source. Results indicate that total nitrogen (TN) and total phosphorus (TP) pollution are the main factors driving eutrophication in the Qilihai Wetland and Yuqiao Reservoir. Phosphorus was the limiting factor in the Yuqiao Reservoir; nitrogen was the limiting factor in the Qilihai Wetland. Pollution in Qilihai Wetland is more serious than in Yuqiao Reservoir. The study found that external sources are the main source of pollution. These two functional water areas are vital for Tianjin; as such, the study proposes targeted management measures.

Suggested Citation

  • Tong Li & Chunli Chu & Yinan Zhang & Meiting Ju & Yuqiu Wang, 2017. "Contrasting Eutrophication Risks and Countermeasures in Different Water Bodies: Assessments to Support Targeted Watershed Management," IJERPH, MDPI, vol. 14(7), pages 1-18, June.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:7:p:695-:d:102953
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    References listed on IDEAS

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    1. Deus, Ricardo & Brito, David & Kenov, Isabella Ascione & Lima, Marcelo & Costa, Vanessa & Medeiros, Adaelson & Neves, Ramiro & Alves, C.N., 2013. "Three-dimensional model for analysis of spatial and temporal patterns of phytoplankton in Tucuruí reservoir, Pará, Brazil," Ecological Modelling, Elsevier, vol. 253(C), pages 28-43.
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    Cited by:

    1. Yinan Zhang & Chunli Chu & Lei Liu & Shengguo Xu & Xiaoxue Ruan & Meiting Ju, 2017. "Water Environment Assessment as an Ecological Red Line Management Tool for Marine Wetland Protection," IJERPH, MDPI, vol. 14(8), pages 1-17, August.

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