Quantifying residue after an intermediate harvest of a second-growth redwood stand

Logging residue at least 1.5 inches in diameter and 4 ft long was sampled in 1982, 6 yr after a harvest removing 40% of the b.a. (365 squared ft/acre) from a 90-yr-old second-growth stand in California. Historically, the stand was dominated by old growth Sequoia sempervirens, with Pseudotsuga menziesii, Abies grandis, Tsuga heterophylla and some Pinus muricata. Calble logging produced 844 cubic ft/acre of residue, 22% more than tractor logging (554 cubic ft/acre), possibly because of crushing and breakage by tractors during skidding. It is concluded that low volume and present markets make it uneconomical to use residues for building materials or fuel. 9 references.