河川環境のための河床地形管理手法に関する技術開発

Abstract

Riverbed gomorphology has ecological functions to support biodiversity by providing habitat structure to organisms and to promote material circling by controlling nutrient spiral length in river ecosystems. Therefore, in the river maintenance and management for the purpose of repair and regeneration of river ecosystem is able to plan for management riverbed terrain is reasonable. In this study, we selected Kizu River basin for the case study site where sediment augmentation is now under implementing. Here, we examined the criteria on river bed topography to improve river environment, and developed a model to determine the conditions for sediment supply needed to form and maintain suitable river bed topography.