其他摘要：Under the Feed-in Tariff Scheme for Renewable Energy in Japan, the utilization of unused woody biomass was increasing because the government set a higher purchase price for renewable energy generation based on unused woody biomass. Moreover, the unused woody biomass included raw material made from thinning woods in the ratio of around 40％, so that effect of the increase or decrease in the utilization of woody biomass from timber thinning was not negligible. Thus, the purpose of this study was to simulate the changes in thinned timber production in 47 prefectures of Japan based on three scenarios considering the purchase period of 20 years under the Feed-in Tariff Scheme for Renewable Energy. The scenarios consisted of business as usual, thinning promotion and thinning decline, and the simulations calculated the commercial thinning volumes by prefectures in 2022 and 2032, starting at 2012. The results showed the common tendencies among prefectures were as follows: Thinned timber production was largest, in order, in the thinning promotion scenario, business as usual and thinning decline; thinned timber production increased in the thinning promotion scenario, decreased in the business as usual scenario and largely decreased in the thinning decline scenario from 2012 to 2032; Hokkaido, Shizuoka, Oita and Kagoshima Prefectures showed a large amount of thinned timber production and also had potential for a further increase in the future, so that these prefectures were particularly important in terms of meeting increasing demands for the utilization of unused woody biomass for renewable energy generation.
关键词：間伐;未利用木材;47都道府県;FIT制度
其他关键词：thinning;unused woody biomass;47 prefectures of Japan;Feed-in Tariff Scheme for Renewable Energy
