A Description of the Sections and Subsections of the interior Highlands of Arkansas and Oklahoma

摘要

Sections and subsections of the Interior Highlands of Arkansas and Oklahoma are redefined, mapped and briefly sum- marized. The map was produced to support the Ozark-Ouachita Highlands Assessment (OOHA), being conducted by the USDA Forest Service. It revises the USDA Forest Service maps "Ecological units of the eastern United States, first approxima- tion" by keys et al. (1995) and the earlier maps of the natural divisions of Arkansas (Foti, 1974; Foti, 1976; Pell, 1983) to reflect New knowledge and to achieve consistency with units recognized in Missouri. Four sections (natural divisions) are defined as Opposed to the three of the previous Arkansas natural divisions maps and new subsections are recognized within most sec- Tions.