Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Ecodivisions as defined by a United States Forest Service report in 1997 (Bailey 1997). This report divides the United States into a hierarchical system of 4 climatic domains, 15 divisions, and 63 provinces. Excluding Hawaii and Alaska there are 11 ecodivisions which are further reduced to 10 here with the merger of division 4 (only 4 counties) into division 3.
