Extended Data Fig. 5: Variables mapped in this study.
From: An unexpectedly large count of trees in the West African Sahara and Sahel
a, The density of trees with a crown size larger 3 m2 per hectare. b, The canopy cover. c, Mean crown size. All variables were mapped by 100 × 100-m (1-ha) grids. Rainfall isohyets of 150, 300, 600 and 1,000 mm yr−1 are also shown.
