河道掘削および砂礫の敷設供給に対する河床の応答

抄録

Bed excavation will be conducted within the upcoming two decades to increase discharge capacity. On the other hand, it is pointed out that river maintenance becomes more important to maintain safety and comfortable environment. In this study, relation between riverbed materials and biological habitats was investigated, which is also key factor to estimate riverbed evolution. As a result, it was clarified that bed excavation mixes riverbed materials, and that flood makes riverbed materials sorted to offer diversity of wildlife habitats.