Abstract
In case of recycling and exploiting biomass resources in regional cities and towns, it is necessary that recycle systems not only reduce environmantal load, but also make the systems themselves economically and socially sustainable. This study deals with biomass recycling systems based on “participation” by inhabitants and workers in the region, and proposes their importance and evaluationg concepts. Indicator of these evaluations is composed of three aspects, “Environment”(CO2 emission), “Economy”(reduction of outgoing cost) and “Society”(participatory hours) to take it into account how these recycling systems are environmentally-benign and sustainable.