Fig. 3From: Estimating the productive potential of five natural forest types in northeastern ChinaStand volume (V; a, on left) and basal area (G; b, on right) of each survey plot at the end of the two five-year periods. The grey area represents the amount of accumulation during the initial phase (V1 or G1), and the orange area represents the increase during the two five-year periods (ΔV or ΔG)Back to article page