FIG. 3. The simulated impact of double CO₂, increased air temperature (+2^oC), and atmospheric N deposition (+0.25 g x m^-2 x yr^-1) on three sites: a wet Norway spruce site in Sweden (Flakiliden), a dry pine forest in Australia (BFG), and an annual grassland in California (Jasper), using the CENTURY and G'DAY models. (The G'DAY model was not run on the Jasper data).