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Influence of the In-Stream Structure on Solute Transport in the Hyporheic Zone

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  • Han Li

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Ying Liu

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Jinghong Feng

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Defu Liu

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Yi Li

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Lihui Chen

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

  • Jingwen Xiao

    (Hubei Key Laboratory of Ecological Restoration of River-Lakes and Algal Utilization, Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, Hubei University of Technology, Wuhan 430068, China)

Abstract

The hyporheic zone (HZ) plays an important role in the river ecosystem, and hyporheic exchange and solute transport in the HZ are important ecological functions. However, the relationship between the design parameters of river structure and solute transport is still poorly understood. In this study, we combined flume experiments and numerical simulations to systematically evaluate how in-stream structures impact the solute transport depth (D P ), hyporheic vertical exchange flux (Q), and solute flux (Qs). The results showed that the in-stream structure had a significant influence on solute transport in the HZ and could obviously increase the intensity of hyporheic exchange and promote solute transport. Model results indicated that D P , Q, and Qs increased with the ratio of ground height to underground height of structure ( H / D ) and structure number ( N ), while Q, D P , and Qs increased with the structural spacing ( S ) to begin with; then, Q remained constant, and D P and Qs decreased as S continued to increase. This study deepened our understanding of the influence of in-stream structural design parameters on HZ solute transport, which is helpful to provide a theoretical basis for ecological restoration projects in the river HZ.

Suggested Citation

  • Han Li & Ying Liu & Jinghong Feng & Defu Liu & Yi Li & Lihui Chen & Jingwen Xiao, 2022. "Influence of the In-Stream Structure on Solute Transport in the Hyporheic Zone," IJERPH, MDPI, vol. 19(10), pages 1-18, May.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:10:p:5856-:d:813489
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    References listed on IDEAS

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    1. B. B. Ward & A. H. Devol & J. J. Rich & B. X. Chang & S. E. Bulow & Hema Naik & Anil Pratihary & A. Jayakumar, 2009. "Denitrification as the dominant nitrogen loss process in the Arabian Sea," Nature, Nature, vol. 461(7260), pages 78-81, September.
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    Cited by:

    1. Ruikang Sun & Jiawei Dong & Yi Li & Panwen Li & Yaning Liu & Ying Liu & Jinghong Feng, 2022. "The Influence Research on Nitrogen Transport and Reaction in the Hyporheic Zone with an In-Stream Structure," IJERPH, MDPI, vol. 19(19), pages 1-21, October.

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