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Dynamic Change in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir and Its Influence on Water Quality

Author

Listed:
  • Jie Yin

    (Faculty of Resources and Environment Science, Hubei University, Wuhan 430062, China
    These authors contributed equally to this work.)

  • Hai Liu

    (Faculty of Resources and Environment Science, Hubei University, Wuhan 430062, China
    School of Remote Sensing and Information, Wuhan University, Wuhan 430062, China
    Jiangxi Provincial Geomatics Center, Nanchang 330209, China
    These authors contributed equally to this work.)

  • Xiaoling Chen

    (State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
    Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China)

Abstract

The water-level fluctuation zone (WLFZ) of the Danjiangkou Reservoir is the last barrier to ensure the water quality of the middle route of the South-North Water Diversion (SNWD) Project and has therefore received widespread attention. Based on the 17-year serial dynamics of the Danjiangkou Reservoir WLFZ extracted from satellite images from 2000 to 2016, this study analyzed the annual and inter-monthly changes in inundation area as well as the non-flooded area within the WLFZ. The first comprehensive map of the temporal and spatial nitrogen ( N ) and phosphorus ( P ) release characteristics of the Danjiangkou Reservoir WLFZ is presented. The results showed that the inundation area underwent a significant increasing trend during this period, and the WLFZ was more frequently affected by off-season alternative drying-wetting than before the water diversion. The total amounts of N and P released into the water from the WLFZ soil layer are considerable (7.6 tons of P and 301.2 tons of N per year) and increasing. Optimizing land use in the WLFZ is an important means to ensure water quality in the Danjiangkou Reservoir and the sustainability of the SNWD Project.

Suggested Citation

  • Jie Yin & Hai Liu & Xiaoling Chen, 2018. "Dynamic Change in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir and Its Influence on Water Quality," Sustainability, MDPI, vol. 10(4), pages 1-17, March.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:4:p:1025-:d:138885
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    References listed on IDEAS

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    1. Fowe, T. & Karambiri, H. & Paturel, J.-E. & Poussin, J.-C. & Cecchi, P., 2015. "Water balance of small reservoirs in the Volta basin: A case study of Boura reservoir in Burkina Faso," Agricultural Water Management, Elsevier, vol. 152(C), pages 99-109.
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    Cited by:

    1. Zhao-Jin Chen & Yang Shao & Ying-Jun Li & Li-An Lin & Yan Chen & Wei Tian & Bai-Lian Li & Yu-Ying Li, 2020. "Rhizosphere Bacterial Community Structure and Predicted Functional Analysis in the Water-Level Fluctuation Zone of the Danjiangkou Reservoir in China During the Dry Period," IJERPH, MDPI, vol. 17(4), pages 1-18, February.

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