抄録
From technological and ecological viewpoints, it is a critical issue to control overgrowth of trees vegetated in floodplains. The authors have developed a hydraulic model which is able to describe flow and drag force in vegetated channels. The model has a two-layer structure in order to analyze both the slow flow through the vegetation and the fast flow over and besides the vegetation. The model was already confirmed to have a satisfactory reproducibility of flood flow structure through the authors' previous studies. In the present study, by collecting additional field data of trees and flood events, the model's performance in identifying areas and amounts of destructed trees was verified. The model could be a useful engineering tool for making a proper ecological management of tree vegetation and channel restoration projects.
