National Forest Report for Region 10 (Alaska)

The top ten species growing in National Forests in Region 10 (Alaska) in terms of standing biomass are western hemlock, Sitka spruce, mountain hemlock, Alaska yellow- cedar, western redcedar, lodgepole pine, red alder, black cottonwood, white spruce, and paper birch. These species account for 99.9% of the total aboveground biomass and 99.9% of the total merchantable volume. For merchantable wood volume, the species with the smallest percent change was western redcedar 0.2%, while the largest percent change was with black cottonwood 11.1%. For total aboveground biomass, the species with the smallest percent change was Alaska yellow- cedar -1.4%, while the largest percent change was with white spruce 78.3%. For sawlog wood volume, the species with the smallest percent change was lodgepole pine -4.6%, while the largest percent change was with paper birch -26.1%. For merchantable bole biomass, the species with the smallest percent change was western redcedar 0.6%, while the largest percent change was with white spruce 52.1%. For stump wood and bark biomass, the species with the smallest percent change was red alder 12.9%, while the largest percent change was with white spruce 51.8%. For top and limb biomass, the species with the smallest percent change was red alder 47.8%, while the largest percent change was with lodgepole pine 325.7%.

Figure 1: Percent difference in total aboveground biomass and merchantable volume for the top ten species in Region 10 (Alaska)

Figure 2: Percent difference in component biomass and volume for the top ten species in Region 10 (Alaska)