United States Department of Agriculture
Growing-stock removals for products have increased by 12% in the Lake States since 1983. Regional gains are led by red pine, aspen, and other hardwoods. New mills and technology promise to further improve markets for underutilized species throughout the region.
Presents and summarizes the green weights and volumes of trees, boles and residue for sugar maple, white spruce, aspen, balsam fir and red pine in Northern Michigan. Equations, tables and graphs are included for each of the five species.
In a 1964-1967 study on the Challenge Experimental Forest, seedfall was evaluated in 2-, 5-, and 10-acre circular clearcuttings. During the 4 years, 10 seed crops, ranging from light to bumper, were produced by ponderosa pine. white fir, Douglas-fir, and incense cedar. Seedfall ranged from 76 to 40,691 sound seed per acre (188 to lOO,547/ha) for a single species in a...