29 Laboratory for Watershed Conservation Taijiro FUKUYAMA Assistant Professor, Ph.D. Keywords: Landslide susceptibility mapping Sediment production in forested watershed Outline Sediment-related disasters, such as debris flow, deep-seated landslides and steep-slope failures occur in Japan every year due to natural conditions such as steep terrain, heavy rain, and seismic and volcanic activity. To protect human lives, housing and public facilities, it is important to predict the timing, place and magnitude of these disasters. We are trying to understand the mechanisms of sediment production and transport, temporal and spatial patterns of water and sediment dynamics, based on field-works and laboratory experiment. Other research focus areas are: (1)understanding mechanisms of sediment-related disaster, such as landslide, to help disaster prevention and effective warning and evacuation system (2)assessment of the impact of the high deer populations on the surface soil erosion and the sediment delivery from forested catchment (3)evaluation of impact of hikers' trampling on mountain trail degradation, such as soil erosion. A B C D A B C Environmental Symbiosis Science Division Channel-scouring by debris flows at Nagiso, Japan Mountain trail degradation in Kirigamine Highland
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