水理特性に着目した河川微地形の生態的機能評価の試み

抄録

Reach scale river morphology affects hydrodynamics which controls the magnitude of physical disturbances distribution during floods. The distribution of physical disturbances distribution is one of the most important factors to characterize habitat in rivers. Therefore, river morphology seems to play important roles in river ecosystem. If we can measure the reach scale river morphology in detail and analyze the hydrodynamics during floods based on it, we can understand the diverse and heterogeneous habitat function of it. We have developed a simple procedure to assess the habitat function of river morphology by using GIS and hydrodynamics analysis. Case study was conducted and a method to estimate the potential of vegetation on banks was proposed.