Figure 1

Normative NPP (version 1.13.0) of major vegetation zones plotted against mean annual temperature (left pane) and annual precipitation (right pane). Points mark mean values, ellipses delineate standard deviations from the mean values, and lines represent temperature curve and humidity curve of the Miami NPP model, respectively. Legend: 42 – tundra, 14 – larch forests, 36 – needle-leaf forests, 13 – summer-green broad-leaved forests, 4 – evergreen broad-leaved forests, 8 – tropical rainforests, 6 – deserts, 27 – semi-desert scrubs, 7 – shrublands, 15 – grasslands, 10 – subhumid woodlands, 3 – raingreen forests.