渓流環境の再生を目標とした渓床の大礫分布の把握 [in Japanese] Research on boulder distribution in a mountainous river for restoration of river environment [in Japanese]
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Boulder distribution is an indicator of the physical and environmental condition of a river in a mountainous area. This research aims to understand the natural distribution of boulders on a riverbed in a mountainous area. Continuous survey was made of long section of river using debris indexes. Boulder distribution was clarified in natural river sections and in artificial river sections installed with erosion and sediment control structures. It was found that the distribution of boulders near erosion and sediment control structures is not natural, and that the distribution differs according to the structure. Data on boulder distribution in river sections in mountainous areas can serve as fundamental information for environmentally friendly sediment control projects whose aim is to preserve and/or restore the natural environment of rivers in mountainous areas.
- Sabo Gakkaishi
Sabo Gakkaishi 59(5), 51-55, 2007-01-15
Japan Society of Erosion Control Engineering