The first completed annual inventory of North Dakota's forests reports estimates of more than 724,000 acres of forest land. Information about forest attributes and forest health is presented along with information on agents of change including changing land use patterns and the introduction of nonnative plants, insects, and disease.

Results of the 2005 annual inventory of South Dakota show 1.7 million acres of forest land in the State. Timberland accounted for more than 90 percent of the forest land area. More than 70 percent of the timberland is publicly owned. Eighty percent (1.2 billion cubic feet) of the growing-stock volume on timberland came from ponderosa pine. All live aboveground tree biomass on timberland totaled 30.3 million dry tons. Major insect problems in South Dakota's forests were mountain pine beetle and the pine engraver beetle.