抄録
This paper investigates effects of thinning and cutting-down of a vegetated channel for reducing the flood water level by using a stochastic process model. The model has been developed for statistically evaluating vegetation and flow status on a floodplain, consisting of the following four processes: (i) stochastic behavior of flow discharge, (ii) hydrodynamics in a channel with vegetation, (iii) variation of riverbed topography and (iv) vegetation dynamics on the floodplain. The river channel analyzed here is one of the vegetation overgrowth locations in the Kako River floodplains. Sensitivity of the flood water level and the vegetation overgrowth tendency is statistically evaluated in terms of the different cutting-down levels, timings and scales of the thinning by the Monte Carlo simulation of the model.
