State Report for Maine

For Maine, estimated merchantable wood volume is expected to decrease from 29.572 billion cubic-feet to 27.972 billion (a change of -5.4%), while estimated sawlog wood volume is expected to decrease from 13.834 billion cubic-feet to 13.262 billion (-4.1%). Estimated merchantable bole biomass is expected to decrease from 447.74 million tons to 421.77 million (-5.8%), while estimated stump biomass is expected to decrease from 26.519 million tons to 26.338 million (-0.7%), and estimated tops and limbs biomass is expected to increase from 106.33 million tons to 176.86 million (66.3%). Finally, estimated aboveground biomass is expected to increase from 634.03 million tons to 690.74 million, a change of 8.9%.

Figure 1: Percent difference in volume and biomass for Maine

Species breakdown

The top ten species in Maine in terms of standing biomass are red maple, red spruce, balsam fir, eastern white pine, sugar maple, yellow birch, eastern hemlock, northern white- cedar, northern red oak, and paper birch. These species account for 82.3% of the total aboveground biomass and 83.7% of the total merchantable volume. For merchantable wood volume, the species with the smallest percent change was northern red oak -1.3%, while the largest percent change was with northern white- cedar -11%. For total aboveground biomass, the species with the smallest percent change was red maple 3.3%, while the largest percent change was with red spruce 37.6%. For sawlog wood volume, the species with the smallest percent change was eastern hemlock -0.5%, while the largest percent change was with red maple -23.1%. For merchantable bole biomass, the species with the smallest percent change was eastern white pine -0.7%, while the largest percent change was with northern white- cedar -21.2%. For stump wood and bark biomass, the species with the smallest percent change was eastern white pine -1.4%, while the largest percent change was with northern white- cedar 43.3%. For top and limb biomass, the species with the smallest percent change was paper birch -2.3%, while the largest percent change was with balsam fir 196%.

Figure 2: Percent difference in total aboveground biomass and merchantable volume for the top ten species in Maine

Figure 3: Percent difference in component biomass and volume for the top ten species in Maine