Ecological Subregions: Provinces, Sections, and Subsections of the Conterminous United States

First Approximation

Regions The 2007 Section and Subsection map and associated data issued by the USDA Forest Service Washington Office-Ecosystem Management Coordination staff are our official inventory of ecological units at the subregional scale and refine our inventory at the regional scale. Polygon descriptions are presented for the delineated 190 section ecological units. Brief descriptions of the section map units provide an abstract primarily of the climate, physiography, and geologic substrate that combine to form ecosystems with distinctive vegetation and other unique ecological characteristics.

To view the geospatial coverage metadata click here.

Data for download

+ Ecological Subregions: Sections and Subsections of the Conterminous US (download zip)

+ Delineation, Peer Review, and Refinement of Subregions of the Cont US (download zip)

+ Ecological Subregions: Sections and Subsections of the Conterminous US (download zip)

+ Ecological Subregions Attributes (download zip)

+ Ecological Subregions Coverage (download zip)

+ Ecological Subregions Presentation (download zip)

+ Entire Dataset