IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Hydraulic and hydrologic investigations into vegetation recruitment on "white" sandbars at historica...
Hydraulic and hydrologic investigations into vegetation recruitment on "white" sandbars at historical village of hahoe on the nakdong river, korea
Author : Hyoseop Woo1, Ji-Sung Kim1, Kang-Hyeon Cho2, and Hyeong-Jin Cho2
Hahoe Village, a historical and cultural village located on the upper Nakdong River in Korea, and registered as World Cultural Heritage by UNESCO, is more distinguished when two large sand bars in the river near the village remain “pure white” without vegetation on their surfaces. Two dams, constructed 25-30km upstream several dozen years ago, have completely modified the flow and sediment regimes downstream, causing continuous vegetation recruitment and establishment on the once ‘naked’ two sand bars in the river. Possible causes for the vegetation recruitment are identified in this study using the comparison of relevant aerial photos, field investigations and hydraulic analyses. Governing factors of vegetation recruitment and establishment on the sand bars are the bed shear stress and flow intensity during floods, and the groundwater table below the sand bars. It was found that progress of the vegetation recruitment and establishment on the sandbars can be estimated largely using the distribution of the river-bed shear stress acting on them.
File Size : 1,571,997 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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