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河道结构对渗流带溶质运移的影响。

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

机构信息

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.

出版信息

Int J Environ Res Public Health. 2022 May 11;19(10):5856. doi: 10.3390/ijerph19105856.

DOI:10.3390/ijerph19105856
PMID:35627401
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9142006/
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), 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, Q, and Qs increased with the ratio of ground height to underground height of structure (/) and structure number (), while Q, D, and Qs increased with the structural spacing () to begin with; then, Q remained constant, and D and Qs decreased as 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.

摘要

底栖带（HZ）在河流生态系统中起着重要作用，HZ 中的底栖交换和溶质输运是重要的生态功能。然而，河流结构的设计参数与溶质输运之间的关系仍了解甚少。本研究结合水槽实验和数值模拟，系统评估了河道结构如何影响溶质输运深度（D）、底栖垂直交换通量（Q）和溶质通量（Qs）。结果表明，河道结构对 HZ 中的溶质输运有显著影响，可明显增强底栖交换强度，促进溶质输运。模型结果表明，D、Q 和 Qs 随结构地下高度与地面高度之比（/）和结构数量（）的增加而增加，而 Q、D 和 Qs 随结构间距（）的增加而先增加；然后，Q 保持不变，D 和 Qs 随着的继续增加而减少。本研究加深了我们对河道结构设计参数对 HZ 溶质输运影响的认识，有助于为河流 HZ 的生态恢复项目提供理论依据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/c0fab3c60bdc/ijerph-19-05856-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/5cd005b5766a/ijerph-19-05856-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/843c3b1a9d2c/ijerph-19-05856-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/8411c6c76d1b/ijerph-19-05856-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/b1489ca93ee3/ijerph-19-05856-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/37cccdf1368e/ijerph-19-05856-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/31f48d40dab1/ijerph-19-05856-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/50aa6ab7682f/ijerph-19-05856-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/a20d9deeac03/ijerph-19-05856-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/1759553fd65c/ijerph-19-05856-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/a649518c088e/ijerph-19-05856-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/630f358de7b6/ijerph-19-05856-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/c0fab3c60bdc/ijerph-19-05856-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/5cd005b5766a/ijerph-19-05856-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/843c3b1a9d2c/ijerph-19-05856-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/8411c6c76d1b/ijerph-19-05856-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/b1489ca93ee3/ijerph-19-05856-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/37cccdf1368e/ijerph-19-05856-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/31f48d40dab1/ijerph-19-05856-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/50aa6ab7682f/ijerph-19-05856-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/a20d9deeac03/ijerph-19-05856-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/1759553fd65c/ijerph-19-05856-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/a649518c088e/ijerph-19-05856-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/630f358de7b6/ijerph-19-05856-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e43/9142006/c0fab3c60bdc/ijerph-19-05856-g012.jpg

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引用本文的文献

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本文引用的文献

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Impacts of Streambed Heterogeneity and Anisotropy on Residence Time of Hyporheic Zone.河床非均质性和各向异性对渗流带停留时间的影响
Ground Water. 2018 May;56(3):425-436. doi: 10.1111/gwat.12589. Epub 2017 Sep 14.
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Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone.河溪潜流带中水文、群落生态学与污染物衰减的相互作用
Sci Total Environ. 2018 Jan 1;610-611:267-275. doi: 10.1016/j.scitotenv.2017.08.036. Epub 2017 Aug 10.
3
A Comparison of Hyporheic Transport at a Cross-Vane Structure and Natural Riffle.
横向叶片结构与天然浅滩处潜流输运的比较
Ground Water. 2015 Nov-Dec;53(6):859-71. doi: 10.1111/gwat.12288. Epub 2014 Nov 18.
4
Moving beyond the banks: hyporheic restoration is fundamental to restoring ecological services and functions of streams.超越河岸：底栖修复对于恢复溪流的生态服务和功能至关重要。
Environ Sci Technol. 2010 Mar 1;44(5):1521-5. doi: 10.1021/es902988n.
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Denitrification as the dominant nitrogen loss process in the Arabian Sea.反硝化作用是阿拉伯海中主要的氮损失过程。
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