Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River
IntroductionUpstream 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...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-05-01
|
| Series: | Frontiers in Environmental Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1554900/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850280621658603520 |
|---|---|
| author | Haoyong Tian Zaimin Ren Chenchen Yao Na Zhong Chunchen Xia |
| author_facet | Haoyong Tian Zaimin Ren Chenchen Yao Na Zhong Chunchen Xia |
| author_sort | Haoyong Tian |
| collection | DOAJ |
| description | IntroductionUpstream 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.MethodsTo address these gaps, this study compares the effects of different FSFs (water surface slope included) on the dynamic adjustments of the Lower Jingjiang Reach (LJR) by applying two response models.ResultsThe 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 agree well with measured data. Moreover, the factors incorporating the water surface slope consistently outperformed those without it.DiscussionThis study provides valuable insights into selecting flow and sediment factors for response models, enhancing the simulation and prediction of channel adjustments. |
| format | Article |
| id | doaj-art-d2af40f1c04b46dbbac302cfd13700af |
| institution | OA Journals |
| issn | 2296-665X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Environmental Science |
| spelling | doaj-art-d2af40f1c04b46dbbac302cfd13700af2025-08-20T01:48:40ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2025-05-011310.3389/fenvs.2025.15549001554900Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze RiverHaoyong Tian0Zaimin Ren1Chenchen Yao2Na Zhong3Chunchen Xia4Energy and Water Conservancy Planning Institute, Power China Huadong Engineering Corporation Limited, Hangzhou, ChinaEnergy and Water Conservancy Planning Institute, Power China Huadong Engineering Corporation Limited, Hangzhou, ChinaEnergy and Water Conservancy Planning Institute, Power China Huadong Engineering Corporation Limited, Hangzhou, ChinaEnergy and Water Conservancy Planning Institute, Power China Huadong Engineering Corporation Limited, Hangzhou, ChinaSchool of Civil Engineering, Zhejiang University of Technology, Hangzhou, ChinaIntroductionUpstream 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.MethodsTo address these gaps, this study compares the effects of different FSFs (water surface slope included) on the dynamic adjustments of the Lower Jingjiang Reach (LJR) by applying two response models.ResultsThe 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 agree well with measured data. Moreover, the factors incorporating the water surface slope consistently outperformed those without it.DiscussionThis study provides valuable insights into selecting flow and sediment factors for response models, enhancing the simulation and prediction of channel adjustments.https://www.frontiersin.org/articles/10.3389/fenvs.2025.1554900/fullresponse modelchannel adjustmentswater surface slopethe Lower Jingjiang Reachflow and sediment factors |
| spellingShingle | Haoyong Tian Zaimin Ren Chenchen Yao Na Zhong Chunchen Xia Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River Frontiers in Environmental Science response model channel adjustments water surface slope the Lower Jingjiang Reach flow and sediment factors |
| title | Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River |
| title_full | Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River |
| title_fullStr | Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River |
| title_full_unstemmed | Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River |
| title_short | Impact of flow and sediment factor selection on downstream channel adjustments in the Lower Jingjiang Reach of the Yangtze River |
| title_sort | impact of flow and sediment factor selection on downstream channel adjustments in the lower jingjiang reach of the yangtze river |
| topic | response model channel adjustments water surface slope the Lower Jingjiang Reach flow and sediment factors |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2025.1554900/full |
| work_keys_str_mv | AT haoyongtian impactofflowandsedimentfactorselectionondownstreamchanneladjustmentsinthelowerjingjiangreachoftheyangtzeriver AT zaiminren impactofflowandsedimentfactorselectionondownstreamchanneladjustmentsinthelowerjingjiangreachoftheyangtzeriver AT chenchenyao impactofflowandsedimentfactorselectionondownstreamchanneladjustmentsinthelowerjingjiangreachoftheyangtzeriver AT nazhong impactofflowandsedimentfactorselectionondownstreamchanneladjustmentsinthelowerjingjiangreachoftheyangtzeriver AT chunchenxia impactofflowandsedimentfactorselectionondownstreamchanneladjustmentsinthelowerjingjiangreachoftheyangtzeriver |