State Report for Wisconsin

For Wisconsin, estimated merchantable wood volume is expected to increase from 27.355 billion cubic-feet to 31.051 billion (a change of 13.5%), while estimated sawlog wood volume is expected to increase from 13.153 billion cubic-feet to 15.594 billion (18.6%). Estimated merchantable bole biomass is expected to increase from 456.14 million tons to 507.01 million (11.2%), while estimated stump biomass is expected to increase from 26.236 million tons to 27.211 million (3.7%), and estimated tops and limbs biomass is expected to increase from 113.88 million tons to 202.32 million (77.7%). Finally, estimated aboveground biomass is expected to increase from 618.43 million tons to 765.94 million, a change of 23.9%.

Figure 1: Percent difference in volume and biomass for Wisconsin

Species breakdown

The top ten species in Wisconsin in terms of standing biomass are sugar maple, red maple, northern red oak, quaking aspen, eastern white pine, red pine, white oak, American basswood, northern pin oak, and black ash. These species account for 65.7% of the total aboveground biomass and 66.5% of the total merchantable volume. For merchantable wood volume, the species with the smallest percent change was eastern white pine 4.5%, while the largest percent change was with sugar maple 23.6%. For total aboveground biomass, the species with the smallest percent change was eastern white pine 12.4%, while the largest percent change was with American basswood 42.1%. For sawlog wood volume, the species with the smallest percent change was black ash 6.1%, while the largest percent change was with sugar maple 32.3%. For merchantable bole biomass, the species with the smallest percent change was eastern white pine -0.3%, while the largest percent change was with quaking aspen 37.7%. For stump wood and bark biomass, the species with the smallest percent change was northern red oak 1.9%, while the largest percent change was with American basswood 30.1%. For top and limb biomass, the species with the smallest percent change was black ash 22.1%, while the largest percent change was with northern red oak 115%.

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

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