29Laboratory for Watershed ConservationTaijiro FUKUYAMAAssistant Professor, Ph.D.Keywords: Landslide susceptibility mappingSediment production in forested watershedOutlineSediment-relateddisasters,suchasdebrisflow,deep-seatedlandslidesandsteep-slopefailuresoccurinJapaneveryyearduetonaturalconditionssuchassteepterrain,heavyrain,andseismicandvolcanicactivity.Toprotecthumanlives,housingandpublicfacilities,itisimportanttopredictthetiming,placeandmagnitudeofthesedisasters.Wearetryingtounderstandthemechanismsofsedimentproductionandtransport,temporalandspatialpatternsofwaterandsedimentdynamics,basedonfield-worksandlaboratoryexperiment.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.ABCDABCEnvironmental Symbiosis Science DivisionChannel-scouring by debris flows at Nagiso, JapanMountain trail degradation in Kirigamine Highland
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