scholarly journals Effect of Flow-Regime Change due to Damming on the River Morphology and Vegetation Cover in the Downstream River Reach: A case of Hapchon Dam on the Hwang River

2004 ◽  
Vol 37 (1) ◽  
pp. 55-66 ◽  
Author(s):  
Sung-Uk Choi ◽  
Byung-Man Yoon ◽  
Hyo-Seop Woo ◽  
Kang-Hyun Cho
Keyword(s):  
Flow Regime ◽  
Vegetation Cover ◽  
Regime Change ◽  
River Morphology ◽  
River Reach

Effects of dam-induced flow regime change on downstream river morphology and vegetation cover in the Hwang River, Korea

2005 ◽  
Vol 21 (2-3) ◽  
pp. 315-325 ◽  
Author(s):  
Sung-UK Choi ◽  
Byungman Yoon ◽  
Hyoseop Woo
Keyword(s):  
Flow Regime ◽  
Vegetation Cover ◽  
Regime Change ◽  
River Morphology ◽  
Induced Flow

Models of Ecological Responses to Flow Regime Change to Inform Environmental Flows Assessments

2017 ◽  
pp. 287-316 ◽  
Author(s):  
J. Angus Webb ◽  
Angela H. Arthington ◽  
Julian D. Olden
Keyword(s):  
Flow Regime ◽  
Regime Change ◽  
Environmental Flows ◽  
Ecological Responses

Impact of vegetation control measures on the bedform of braided gravel-bed river

2021 ◽  
Author(s):  
Runye Zhu ◽  
Ryota Tsubaki
Keyword(s):  
Physical Process ◽  
Vegetation Cover ◽  
Main Channel ◽  
River Morphology ◽  
Morphological Response ◽  
Vegetation Control ◽  
Braided Rivers ◽  
Vegetation Removal ◽  
Maximum Discharge ◽  
Small Channels

<p>Braiding is among the most dynamic landscape on Earth. It provides diverse habitats for freshwater creatures. Unfortunately, the number of braided rivers is reducing affected by human activities in the Anthropic period. The increase of the vegetation cover within the river corridor is one important factor, which is induced by flow regime change, land-use change, or alien vegetation invasion. Vegetation clearance could be a promising measure to mitigate vegetation overexpansion. Several previous research suggested vegetation clearance may induce geomorphological metamorphosis. However, quantitative prediction of the morphological change resulted from the vegetation clearance is still an open question to date. We simulated the river morphological response of vegetated braided river with gravel bed to the vegetation clearance using the Nays2DH model combined with a vegetation module. Except for vegetation removal, the developed conceptual model considered vegetation colonization and the destruction induced by floods. Multiple scenarios have been tested, considering two vegetation types (strong and weak vegetation), two clearance methods (full clearance and partial clearance), and two maximum discharge. The full clearance scenario stood for the removal of above-ground and underground biomass simultaneously, and the partial clearance scenario stood for the removal of above-ground biomass. Braided rivers had developed for both no vegetation and river with weak vegetation cover. The bedform affected by strong vegetation coverage consisted of a main channel and small channels on the floodplain, which was consistent with previous experimental results. The distinctive morphology of developed bed form depended on the dominant factor in the vegetation-geomorphology interaction: vegetation dominant or physical process dominant. River morphology responded differently to the vegetation control measure based on the dominating factor. For the vegetation dominated river, the developed main channel tended to be braiding after the vegetation removal, and the river morphology change was sensitive to the vegetation clearance method. By contrast, river morphology changed insignificantly by vegetation colonization and after vegetation removal if the river physical process was dominant. We also found that the small channels on the floodplain promoted sediment transport from the floodplain to the main channel after the vegetation clearance. Thus, the morphological response to the vegetation clearance method was also affected by the reduction of maximum discharge because the connectivity between floodplain and channel was reduced. To improve vegetation clearance effectiveness, we recommend increasing the connectivity between the floodplain and the main channel, such as excavating small channels on the floodplain.</p>

scholarly journals Evaluating Regime Change of Sediment Transport in the Jingjiang River Reach, Yangtze River, China

Water ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 329 ◽  
Author(s):  
Li He ◽  
Dong Chen ◽  
Shiyan Zhang ◽  
Meng Liu ◽  
Guanglei Duan
Keyword(s):  
Sediment Transport ◽  
Yangtze River ◽  
Regime Change ◽  
River Reach

scholarly journals Evaluation of Eco-Hydrological Changes in the Geum River Considering Dam Operations: I. Flow Regime Change Analysis

2009 ◽  
Vol 42 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Ick-Hwan Ko ◽  
Jeong-Kon Kim ◽  
Sang-Young Park
Keyword(s):  
Flow Regime ◽  
Regime Change ◽  
Change Analysis ◽  
Hydrological Changes

scholarly journals Study on flow regime change due to weir construction plan in Batang Asai River, Sarolangun, Province of Jambi

2020 ◽  
Vol 437 ◽  
pp. 012012
Author(s):  
Akbar Rizaldi ◽  
Mohammad Farid ◽  
Idham Riyando Moe ◽  
Herryan Kendra
Keyword(s):  
Flow Regime ◽  
Regime Change

scholarly journals Understanding multiple ecological responses to anthropogenic disturbance: rivers and potential flow regime change

2012 ◽  
Vol 22 (1) ◽  
pp. 250-263 ◽  
Author(s):  
Catherine Leigh ◽  
Ben Stewart-Koster ◽  
Fran Sheldon ◽  
Michele A. Burford
Keyword(s):  
Flow Regime ◽  
Potential Flow ◽  
Anthropogenic Disturbance ◽  
Regime Change ◽  
Ecological Responses
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