Lumber-grade recovery from 110-year-old Douglas-fir thinnings.

Abstract

What lumber-grade and yield recovery is possible from thinnings in low Site III, 110-year-old, young-growth Douglas -fir stand? A lumber-grade recovery study of sawtimber cut in recent thinning experiments at the Wind River Experimental Forest, Skamania County, Washington, gives some idea of the answer. The thinning experiments were designed to determine increment and yield of young Douglas-fir stands in the older age classes, which are approaching final harvest. As part of the study to determine whether such cuttings are justified economically, the lumber yield of timber cut in the experiment was explored.

Citation

Worthington, Norman P. 1955. Lumber-grade recovery from 110-year-old Douglas-fir thinnings. PNW Old Series Research Note No. 121, p. 1-6