Definitions for "Ecoregion"
a relatively large unit of land or water that is characterized by a distinctive climate, ecological features and plant and animal communities e.g., Everglades Flooded Grasslands and the Great Basin Lakes and Streams.
geographic units that are differentiated by climate, subsurface geology, physiography, hydrology, soils, and vegetation. These units have been defined and organized in different ways by various agencies and institutions but in this document we use the National Hierarchical Framework of Ecological Units (NHFEU). As described by Avers et al (1994), the NHFEU can provide a basis for assessing resource conditions at multiple scales.
An environmental area characterized by a specific land use, soil type, land surface form and natural vegetation.
an area with major physiographic and minor macroclimatic or oceanographic variation
Keywords:  scenic, trail, forest, virgin, national
National Scenic Trail Virgin Forest