摘要:The degradation of forest ecosystems due to depopulation, aging and economic depression of industries in rural areas, has been extensively discussed, while at the same time, increased demand for renewable energy from woody biomass has resulted in much attention to forestry and rural areas. This study provides an overview of regional circulation in a small woody biomass energy system in a typical Japanese rural area, Mishima Town, Fukushima Prefecture. To resolve the problem of forest degradation, two issues (energy and forests) in the study area are focused on and discussed in light of the national-level background. We have derived two constraints (circulation radius and feasible size) and conducted four research activities (focused respectively on forest resources, production, energy infrastructure and the social system and scenarios) for local revitalization. To address implementation of an energy system, Mishima Town established a council that has working groups strongly related to our research activities. Finally, it can be stressed that the goal of our project is identical to the concept of "regional circular and ecological spheres" (regional CESs).