The Concept of "Biomass Circulation" in Masuda: A Perspective from Around 2002

The Concept of "Biomass Circulation" in Masuda: A Perspective from Around 2002

Around 2002, Japan was preparing to ratify the Kyoto Protocol, and the reduction of greenhouse gas emissions and the realization of a recycling-oriented society were major policy issues. While the introduction and expansion of renewable energy sources was being explored, the stagnation of agriculture and forestry in rural areas due to population decline and aging, and the increase in abandoned farmland were becoming increasingly serious, and how to utilize local resources became an important issue.

The "Special Zone for Utilization of Waste to Biological Resources," which was conceived for the entire city of Masuda in Shimane Prefecture, attracted attention as an effort to address these issues. The "Waste to Bio-Resource Utilization Special Zone" is a mechanism to ease regulations for the purpose of recycling wood waste, forest residues, and livestock manure, which were previously considered a disposal burden, by converting them into energy and fertilizers. Special exceptions to the Waste Disposal and Public Cleansing Law and the Fertilizer Control Law have been established, allowing for the flexible promotion of demonstrations of fuel conversion and composting.

At the time, the city of Masuda was depopulated and aging, and the sustainability of the local economy was being questioned. The utilization of biomass resources was expected to lead not only to environmental policy but also to the revitalization of local industries based on agriculture, forestry, and livestock farming. Heat supply from woody biomass and energy conversion of livestock biomass had the potential to increase the region's energy self-sufficiency and reduce its dependence on fossil fuels.

This special zone was a symbolic attempt to convert waste from a "burden" to a "resource," and was noted as a pioneering challenge nationwide. The case of Masuda was positioned as an experimental model that anticipated the realization of energy conversion and a recycling-oriented society from the local area.