ORIGINAL RESEARCH article
Front. Environ. Sci.
Sec. Water and Wastewater Management
Volume 13 - 2025 | doi: 10.3389/fenvs.2025.1554900
Impact of Flow and Sediment Factors Selection on Downstream Channel Adjustments in the Lower Jingjiang Reach of the Yangtze River
Provisionally accepted
- 1PowerChina Huadong Engineering Corporation Limited, Hangzhou, China
- 2School of Civil Engineering, Zhejiang University of Technology, Hangzhou, China
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Upstream damming significantly changes the flow and sediment conditions entering downstream reaches, resulting in remarkable channel adjustments. Several response models were applied to analyze the channel adjustments in response to flow and sediment conditions. However, the influence of water surface slope has been underexplored, and there is a lack of comparative analysis between various flow and sediment factors (FSF) and response models. To address these gap, this study compares the effects of different FSFs (water surface slope is included) on the dynamic adjustments of the Lower Jingjiang Reach (LJR) by applying two response models. The results show that, for the LJR, the combinations of fluvial erosion intensity (The square of the discharge divided by sediment concentration) during the flood season and water surface slope provide good agreement with measured data. Moreover, the factors incorporating the water surface slope consistently outperformed those without it. This study provides valuable insights into selecting flow and sediment factors for response models, enhancing the simulation and prediction of channel adjustments.
Keywords: Response model, channel adjustments, Water surface slope, the Lower Jingjiang Reach, Flow and sediment factors Additional information
Received: 03 Jan 2025; Accepted: 08 Apr 2025.
Copyright: © 2025 Tian, Ren, Yao, Zhong and Xia. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Haoyong Tian, PowerChina Huadong Engineering Corporation Limited, Hangzhou, China
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