Yields of Four 40-year-old Conifers and Aspen in Adjacent Stands

Abstract

Volume and dry-weight yield comparisons of 40-year-old planted red pine (Pinusresinosa Ait.), jack pine (Pinusbanksiana Lamb.), white spruce (Piceaglauca (Moench.) Voss), black spruce (Piceamariana (Mill.) BSP), and a naturally regenerated aspen (Populustremuloides Michx.) sucker stand show that red pine has the highest yields and black spruce the lowest. Volume yields of aspen, jack pine, and white spruce are similar, but weight yields of white spruce are much less than weight yields of either aspen or jack pine. It is recommended that yield comparisons within and between species should be done on a weight as well as a volume basis because large differences in densities can occur.