Fig. 2: Spatial patterns of forest ageing and stand-replacing disturbances.
From: Global covariation of forest age transitions with the net carbon balance
a,b, Spatial distribution of undisturbed ageing (a) and stand-replaced forest fraction (b) at one-degree pixel size. c,d, The forest age pre-stand-replacement (c) and the total area of forest management types46 (d) are also shown across the 11 TRANSCOM-land regions (Supplementary Fig. 3). Unmanaged/intact forests are regenerating forests without any signs of management (including primary forests). Naturally regenerated forests are forests that have regenerated without signs of management (for example, logging, clear-cuts). Plantation forests are considered to have a rotation time of up to 15 years. In a–c, the median estimates of the 20 members are shown. The error bars in c represent the 5th and 95th percentiles of the forest age pre-stand-replacement quantiles across the 20 members. One-degree grid cells with less than 20% forest cover have been masked. NA, North American; SA, South America.
