Spatial patterns of forests (a), grasslands (b), irrigated crops (c), and rain-fed crops (d) restoration potential in drylands at the 0.5 grid scale over the period 2003-2018. Negative potential means that vegetation in the area is overloaded with water constraints. Blank areas within the boundaries indicate that they are not currently covered with this type of vegetation. The plots in panels means the variation of vegetation restoration potential with drought gradients, Hy is hyperarid, Ar is arid, Sa is semi-arid, and Ds is dry subhumid areas.