我が国におけるバイオマス資源の発生量と利用可能量の推定

Abstract

The fossil resources are scarce in our country, but forest resources are plentiful. Therefore, biomass resources will become more important in the future as an alternative of the fossil resources. However, only a few studies have been made on the amount of biomass available in our country. Therefore, in this study, based on the recent statistical data available in the literature, detailed survey on the virgin biomass resources and their unused and waste portions was made in their masses and available quantity. As a result, total annual masses generated and available quantity were estimated to be about 370 and 77 million tons, respectively. The latter value is, in fact, equivalent to 127 million tons of carbon dioxide emitted. This is an enormous quantity, which corresponds to about 10% of the carbon dioxide emitted in 1997 in Japan.