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Spatiotemporal Variations in Water Flow and Quality in the Sanyang Wetland, China: Implications for Environmental Restoration

Author

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  • Jingya Ban

    (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Bing Ling

    (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Wei Huang

    (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Xiaobo Liu

    (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Wenqi Peng

    (State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
    Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China)

  • Jianmin Zhang

    (State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610066, China)

Abstract

Spatiotemporal modeling of wetland environments’ hydrodynamics and water quality characteristics is key to understanding and managing these ecologically important areas’ physical and environmental properties. We developed a two-dimensional numerical model based on the MIKE 21 module to analyze flow and pollution dynamics in the island-dominated Sanyang wetland of eastern China. Three simulation periods representing annual precipitation cycles were used to model freshwater discharge and water quality in the wetland. The results showed that the flow velocity in the study area had hydrodynamic characteristics typical of such a setting, with an average monthly flow velocity ranging from 0.01 to 0.04 m/s, contributing to an increased risk of serious eutrophication. The water quality problems (represented by ammonia nitrogen, NH 3 -N, and total phosphorus, TP, levels) peaked during the early summer peak rain season, followed by a gradual decline during a later flood period and the lowest values during the fall/winter dry period. Moreover, the spatial distribution of NH 3 -N and TP levels decreased from northwest to east, reflecting the influence of a highly polluted source. Our results provide a useful context for restoration efforts in the Sanyang wetland and other similar areas.

Suggested Citation

  • Jingya Ban & Bing Ling & Wei Huang & Xiaobo Liu & Wenqi Peng & Jianmin Zhang, 2021. "Spatiotemporal Variations in Water Flow and Quality in the Sanyang Wetland, China: Implications for Environmental Restoration," Sustainability, MDPI, vol. 13(9), pages 1-16, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:4637-:d:540746
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    Cited by:

    1. Jiaran Zhang & Zeyu Xu & Ce Shi & Xinting Yang, 2021. "A Fluorescence Method Based on N, S-Doped Carbon Dots for Detection of Ammonia in Aquaculture Water and Freshness of Fish," Sustainability, MDPI, vol. 13(15), pages 1-14, July.
    2. Guoliang Guan & Yonggui Wang & Ling Yang & Jinzhao Yue & Qiang Li & Jianyun Lin & Qiang Liu, 2022. "Water-Quality Assessment and Pollution-Risk Early-Warning System Based on Web Crawler Technology and LSTM," IJERPH, MDPI, vol. 19(18), pages 1-16, September.

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