The Oak Ridge Experiment on CO2 Enrichment of Sweetgum is a Free-Air CO2
Enrichment (FACE) experiment at the Oak Ridge National Laboratory in Tennessee,
USA. The experiment tests critical hypotheses ...
Three forested tracts, comprising a total of 1,200 ha, are sampled
every 10-30 years. Stand boundaries are located by ground survey
(1936) or aerial photography (1946 and later). Each stand ...