2007 Volume 13 Pages 381-386
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.
