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Statistical Assessment of Water Quality Issues in Hongze Lake, China, Related to the Operation of a Water Diversion Project

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  • Yi Wu

    (Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
    Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of China, Nanjing 210042, China)

  • Rong Dai

    (Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of China, Nanjing 210042, China)

  • Yongfeng Xu

    (Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Jiangang Han

    (Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China)

  • Pingping Li

    (Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China)

Abstract

The Hongze Lake serves as the first important transfer and storage path along the East Route of the South-to-North Water Diversion Project (SNWDP-ER). After the Project began operating in 2013, eutrophication in the lake has created increasing public concern regarding the direct effect on water quality from the project. In this paper, we used multivariate statistical methods to examine the variances between water quality variables at four site groups (inlets and outlets in the study area) and during three seasons (wet, normal, and dry seasons) in Eastern Hongze Lake. We also used redundancy analysis (RDA) to analyze environmental factors’ impact on water quality. We found that (1) the concentrations of nitrogen and phosphorus were exceeding the standard values; (2) No significant spatial heterogeneity regarding nitrogen and phosphorus among the inlet/outlet of Eastern Hongze Lake existed in normal and wet seasons, and there was no evidence demonstrating that SNWDP-ER could improve eutrophication or even contribute to eutrophication in the dry season; (3) Environmental factors (land use, water diversion, and population) have limited influences on water quality, which was possibly caused by the overly-high river input and artificial input of nitrogen and phosphorus. Thus, it is critical to reinforce the control of pollution sources and enhance the ecological restoration.

Suggested Citation

  • Yi Wu & Rong Dai & Yongfeng Xu & Jiangang Han & Pingping Li, 2018. "Statistical Assessment of Water Quality Issues in Hongze Lake, China, Related to the Operation of a Water Diversion Project," Sustainability, MDPI, vol. 10(6), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:6:p:1885-:d:150741
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    References listed on IDEAS

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    3. Yongyong Zhang & Jun Xia & Tao Liang & Quanxi Shao, 2010. "Impact of Water Projects on River Flow Regimes and Water Quality in Huai River Basin," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(5), pages 889-908, March.
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    1. Yanhui Guo & Yongfeng Xu & Chenming Zhu & Pingping Li & Yongli Zhu & Jiangang Han, 2022. "How Does Adjacent Land Use Influence Sediment Metals Content and Potential Ecological Risk in the Hongze Lake Wetland?," IJERPH, MDPI, vol. 19(16), pages 1-15, August.
    2. Ludovic-Alexandre Vidal & Franck Marle & Mathieu Dernis, 2021. "Modeling and Estimating Host Country Values in International Projects to Facilitate In-Country Value Creation," Sustainability, MDPI, vol. 13(10), pages 1-21, May.

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