National Forest Report for Region 2 (Rocky Mountain)

The top ten species growing in National Forests in Region 2 (Rocky Mountain) in terms of standing biomass are Engelmann spruce, quaking aspen, lodgepole pine, subalpine fir, ponderosa pine, Douglas- fir, white fir, corkbark fir, limber pine, and blue spruce. These species account for 98% of the total aboveground biomass and 98.4% of the total merchantable volume. For merchantable wood volume, the species with the smallest percent change was quaking aspen -1.1%, while the largest percent change was with limber pine -18.3%. For total aboveground biomass, the species with the smallest percent change was limber pine 3.3%, while the largest percent change was with subalpine fir 28%. For sawlog wood volume, the species with the smallest percent change was ponderosa pine -0.1%, while the largest percent change was with limber pine -22.5%. For merchantable bole biomass, the species with the smallest percent change was white fir 1.5%, while the largest percent change was with limber pine -31.7%. For stump wood and bark biomass, the species with the smallest percent change was corkbark fir 0.3%, while the largest percent change was with Douglas- fir -16.7%. For top and limb biomass, the species with the smallest percent change was quaking aspen 25%, while the largest percent change was with subalpine fir 206.9%.

Figure 1: Percent difference in total aboveground biomass and merchantable volume for the top ten species in Region 2 (Rocky Mountain)

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