P-61 Estimating availability of logging residue using forest management records and plans at Takahara area of Tochigi prefecture

Abstract

The supply potential of logging residue from precommercial thinning operations significantly increased between 2009 and 2010, on account of a new tax levied in April 2008; on the other hand, a steady supply of logging residue is projected by using forest management plans. In forest management plans, it is assumed that precommercial and commercial thinning operations are conducted within the same subcompartments. Therefore, the profitability of subcompartments can be improved through the use of commercial thinning operations, and the available logging residue amounts from precommercial thinning operations are estimated in forest management plans.