Forested Area in the U.S.
Via http://earthobservatory.nasa.gov/IOTD/view.php?id=76697

 Relates post:
- Forest distribution in Europe
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Alex E

Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.