Published

2022-05-11

Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel

Efectos de la altura de la vegetación y de la inmersión relativa en vegetación rígida en la corriente de un canal abierto

DOI:

https://doi.org/10.15446/esrj.v26n1.76187

Keywords:

Rigid submerged vegetation, Vegetation height, Relative submergence, Flow structure, Water depth, Flow velocity distribution (en)
vegetación sumergida rígida; Altura de la vegetación; inmersión relativa; Flujo Estructura; Profundidad del agua; Distribución de la velocidad (es)

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Authors

  • Zhongyu Wang Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University https://orcid.org/0000-0002-1342-3024
  • Huayong Zhang Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University https://orcid.org/0000-0001-8898-8567
  • Xing He Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University
  • Qi Jiang National Major Science and Technology Program Management Office for Water Pollution Control and Treatment
  • Weigang Xu Institute of Wetland Research, Chinese Academy of Forestry
  • Wang Tian Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University
In this research, the vegetation height and a concept of relative submergence are adapted to experimentally investigate the effects of rigid submerged vegetation on flow structure. The results reveal that the relative submergence presents decreasing trend along the submerged vegetation section and the average relative submergence follows a power functional decreasing relationship regarding to the increase of vegetation height. After the exit of vegetation block, the water depths for the vegetated cases resume to the level and trend of the case without vegetation. The differences between the maximum and minimum water depths for the submerged cases follow a linear relationship with vegetation height and a negative power functional relationship with the average relative submergence, with which, the raised water depths due to rigid submerged vegetation can be predicted under similar hydraulic and vegetation conditions to the present research. Due to the retardance of vegetation block, the differences between the maximum and minimum flow velocities increase with the vegetation height as the maximum values change slightly and the minimum values decrease continuously. The findings of the research may improve the comprehensive understandings of open channel hydraulic behaviors affected by rigid submerged vegetation and give some guidance to the river ecological restorations.

La vegetación en las corrientes de un río natural interactúa con el flujo de agua de una manera no lineal. En esta investigación se estudia la altura de la vegetación y un concepto de inmersión relativa para investigar experimentalmente los efectos de la vegetación rígida sumergida en una estructura de flujo. Los resultados revelan que las submersiones relativas decrecen a lo largo de la sección de vegetación sumergida. Desde la perspectiva del caso promedio, la relación lineal entre la profundidad del agua y la altura de la vegetación demuestra una tendencia a la baja del promedio de la inmersión relativa a medida que se incrementa la altura de la vegetación. Las diferencias entre la profundidad mínima y máxima del agua en los casos de inmersión puede describirse a través de una función lineal positiva con la altura de la vegetación y una función de poder negativa con inmersión relativa, por lo que el incremento del nivel del agua ocasionado por el bloqueo de la vegetación se puede predecir con condiciones hidráulicas similares. Los hallazgos de la investigación, especialmente la introducción de la inmersión relativa y su relación funcional con la alternación de la profundidad del agua inducida por la vegetación sumergida, pueden mejorar los amplios conocimientos de los comportamientos hidráulicos en un canal abierto con vegetación y pueden ofrecer información para la restauración ecológica de ríos.

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How to Cite

APA

Wang, Z., Zhang, H., He, X., Jiang, Q., Xu, W. and Tian, W. (2022). Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel. Earth Sciences Research Journal, 26(1), 39–46. https://doi.org/10.15446/esrj.v26n1.76187

ACM

[1]
Wang, Z., Zhang, H., He, X., Jiang, Q., Xu, W. and Tian, W. 2022. Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel. Earth Sciences Research Journal. 26, 1 (May 2022), 39–46. DOI:https://doi.org/10.15446/esrj.v26n1.76187.

ACS

(1)
Wang, Z.; Zhang, H.; He, X.; Jiang, Q.; Xu, W.; Tian, W. Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel. Earth sci. res. j. 2022, 26, 39-46.

ABNT

WANG, Z.; ZHANG, H.; HE, X.; JIANG, Q.; XU, W.; TIAN, W. Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel. Earth Sciences Research Journal, [S. l.], v. 26, n. 1, p. 39–46, 2022. DOI: 10.15446/esrj.v26n1.76187. Disponível em: https://revistas.unal.edu.co/index.php/esrj/article/view/76187. Acesso em: 28 mar. 2025.

Chicago

Wang, Zhongyu, Huayong Zhang, Xing He, Qi Jiang, Weigang Xu, and Wang Tian. 2022. “Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel”. Earth Sciences Research Journal 26 (1):39-46. https://doi.org/10.15446/esrj.v26n1.76187.

Harvard

Wang, Z., Zhang, H., He, X., Jiang, Q., Xu, W. and Tian, W. (2022) “Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel”, Earth Sciences Research Journal, 26(1), pp. 39–46. doi: 10.15446/esrj.v26n1.76187.

IEEE

[1]
Z. Wang, H. Zhang, X. He, Q. Jiang, W. Xu, and W. Tian, “Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel”, Earth sci. res. j., vol. 26, no. 1, pp. 39–46, May 2022.

MLA

Wang, Z., H. Zhang, X. He, Q. Jiang, W. Xu, and W. Tian. “Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel”. Earth Sciences Research Journal, vol. 26, no. 1, May 2022, pp. 39-46, doi:10.15446/esrj.v26n1.76187.

Turabian

Wang, Zhongyu, Huayong Zhang, Xing He, Qi Jiang, Weigang Xu, and Wang Tian. “Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel”. Earth Sciences Research Journal 26, no. 1 (May 11, 2022): 39–46. Accessed March 28, 2025. https://revistas.unal.edu.co/index.php/esrj/article/view/76187.

Vancouver

1.
Wang Z, Zhang H, He X, Jiang Q, Xu W, Tian W. Effects of vegetation height and relative submergence for rigid submerged vegetation on flow structure in open channel. Earth sci. res. j. [Internet]. 2022 May 11 [cited 2025 Mar. 28];26(1):39-46. Available from: https://revistas.unal.edu.co/index.php/esrj/article/view/76187

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2. Xiaonan Tang, Prateek K. Singh, Yutong Guan, Ming Li. (2024). Flow through layered vegetation in open channel flows: effect on velocity and discharge distribution. Environmental Fluid Mechanics, 24(4), p.611. https://doi.org/10.1007/s10652-023-09960-y.

3. Sanaz Sediqi, Jueyi Sui, Guowei Li. (2025). Effect of submerged vegetation on hydraulic resistance of ice-covered flows. International Journal of Sediment Research, 40(2), p.348. https://doi.org/10.1016/j.ijsrc.2024.09.008.

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