農学部研究紹介英語版2018-2019

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Laboratory of Silviculture Tetsuoh SHIROTA Assistant Professor Tree architecture, Life history of woody plants, Population ecology, Biodiversity, Natural regeneration To get the forest ecosystem services sustainably in the changing world, the ecological and reasonable forest management is required. To realize our object, we try to understand the behavior of woody plants, the dynamics of forest ecosystems and their response to the human activity. Because forest ecosystems react sluggishly to natural disturbances and human impacts, and their responses are different depending on field characteristics, we adopt three strategy in our laboratory: (1) long term ecosystem monitoring, (2) accumulation and analysis the practical field data, (3) comparison the field data with the theoretical models. Life History and its strategy of Woody Plants: Woody plants represent various shape and size. However, we can find the rules such as the pipe model, the elasticity model and so on. We try to integrate them under the concept of the metabolic ecology. A B C D A B C We have monitored the vegetation structure in the thinned Japanese cypress forest for 20 years. Vertical transition pattern of vegetation from cool temperature zone to one of subalpine zone response to the global warming. Vegetation Structure and Dynamics: Different plant species and its population is a unit of the vegetation. The competitive and cooperative interactions among resource and environment will result their relationships. Silviculture and Forest Management: The objects of silviculture has been changed in the history. We try to act the conservation biodiversity in artificial forest with low cost. We also try to success the recruitment of trees in disturbed or sasa-covered land. Environmental Symbiosis Science Division Laboratory for Watershed Conservation Taijiro FUKUYAMA Assistant Professor 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 30