P-02 集材可否からみた森林資源における賦存量と利用可能量の差

抄録

There is a difference between existing and available amount in any resources. This study investigated the difference in woody biomass resources from a technical standpoint in relation to logging operations. The two areas chosen for this study were Nagano and Kochi Prefecture, which have planted forest area of 3378.2 km² and 3415.4 km², respectively. Cable logging with tower and swing yarders were simulated in a geographic information system for estimating the available amount. The available amounts were estimated to be 1338.4 km² in Nagano Prefecture and 1379.4 km² in Kochi Prefecture. The results showed that there is a large difference between existing and available amount in woody biomass resources, suggesting the important role of further expansion of forest road networks to increase available amounts.