A correction model for estimating jack pine tree-level lumber recovery accurately using forest inventory data

This study proposes an approach to directly estimate lumber recovery from individual trees using forest inventory measurements. In this approach using tree measurements and taper equation, three-dimensional virtual stems were reconstructed for lumber recovery simulation, and simulated lumber recoveries from the virtual stems were compared with those from the realshape stems to investigate the lumber recovery differences between the two types of stems. Lumber volume recoveries from jack pine real-shape stems were lower than those of the virtual stems due to stem deformations. There were no significant differences
in the number of lumber pieces produced for each dimension (except for 1 by 3 board). The lumber volume recovery of the real-shape stems was linearly corrected with that of the virtual stems with an intercept coefficient not different from zero. As the linear models will allow for stem deformations to be taken into consideration when lumber recovery is estimated from the virtual stems reconstructed from forest inventory data, they will thus lead to a more accurate estimation of lumber recovery directly from forest inventory data.

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