Comparative Analysis on Cutting Possibilities Derived from Different Allowable Cut Indicators in Slovakia

抄録

This paper examines the issue of forecasting growing stock development and cutting possibilities based on the actual regeneration period of individual forest stands. These cutting possibilities represent a harvest level that is sustainable in light of forest stand regeneration. A survey was conducted using two groups of forest stands taken from the Forest Management Plan database at the Training Forest Enterprise of the Technical University in Zvolen, Slovakia. We compare the growing stock and harvest levels estimated by considering the actural regeneration period with those estimated by the following indicators of allowable cut: analytical cutting percentage, empirical cutting percentage, 1/20 of standing volume of forest stands in the two oldest age-classes and older, and 1/30 of standing volume of forest stands in the three oldest age-classes and older. The results indicated that cutting possibilities estimated by considering the actual regeneration period can be used as the judging criterion for selecting the most suitable allowable indicator to the target forest management unit. For our experiments, the empirical cutting percentage outperformed the other indicators on the basis of suitability of the derived cutting possibilities.