National Forest Report for Region 1 (Northern)

The top ten species growing in National Forests in Region 1 (Northern) in terms of standing biomass are Douglas- fir, lodgepole pine, grand fir, Engelmann spruce, subalpine fir, western larch, western redcedar, ponderosa pine, western hemlock, and mountain hemlock. These species account for 96.7% of the total aboveground biomass and 97.1% of the total merchantable volume. For merchantable wood volume, the species with the smallest percent change was grand fir 0.4%, while the largest percent change was with ponderosa pine 17.7%. For total aboveground biomass, the species with the smallest percent change was western larch 3.3%, while the largest percent change was with subalpine fir 22.7%. For sawlog wood volume, the species with the smallest percent change was western larch 0.5%, while the largest percent change was with ponderosa pine 23.4%. For merchantable bole biomass, the species with the smallest percent change was subalpine fir -3.4%, while the largest percent change was with western larch 12.3%. For stump wood and bark biomass, the species with the smallest percent change was subalpine fir -2.1%, while the largest percent change was with western larch -45.2%. For top and limb biomass, the species with the smallest percent change was western redcedar -8%, while the largest percent change was with subalpine fir 161.9%.

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

Figure 2: Percent difference in component biomass and volume for the top ten species in Region 1 (Northern)