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The Ecological Provinces of Oregon

An ecological site is a local combination of certain soils, climate, topography, and vegetation; the combination has management implications.

An ecological province, which is a subdivision of a region, has a distinctive combination of geological features and ecological sites.  In an ecological province, general regional differences in vegetation complexes among ecological sites are related to basic differences in underlying geology, geomorphology, and climate on a relatively broad scale that encompasses a number of ecological sites.

Anderson, E.W., Borman, M.M., and Krueger, W.C. 1998. The ecological provinces of Oregon: A treatise on the basic ecological geography of the state. Oregon Agricultural Experiment Station. SR 990. Corvallis, Oregon, USA.

 
Small Oregon topographic mapOregon Home Page URL: http://oregonrangelands.org/Ecological_Provinces/OregonEcologicalProvinces.html
Last Revised: September 9, 2004
 
Coast Ecological Province Siskiyou Ecological Province Willamette Ecological Province Cascade Ecological Province The Dalles Ecological Province Mazama Ecological Province Columbia Basin Ecological Province Palouse Ecological Province Klamath Ecological Province John Day Ecological Pronvince Blue Mountain Ecological Province High Desert Ecological Province Snake River Ecological Province Humboldt Ecological Province Owyhee Ecological Province