Fig. 1: Wood, foliage and root carbon of 9,947,310,221 trees with crown area >3 m2 across 9.7 million km2 were mapped.
From: Sub-continental-scale carbon stocks of individual trees in African drylands
a, Our study covered the southern Sahara, the Sahel and the northern Sudanian zone of Africa and showed the aggregated carbon density (foliage + wood + root) per hectare for 9,947,310,221 tree crowns from the 0–1,000 mm year−1 mean precipitation area. The isohyets mark the 150, 300, 600 and 1,000 mm year−1 rainfall zones (from north to south). b, Example showing the woody carbon stock of each single tree for an agroforestry area in Senegal. c, Mean tree carbon density at the 5th, 25th, 75th and 95th percentiles along the rainfall gradient for wood, foliage and root carbon. d, Mean carbon stock of individual trees at the 5th, 10th, 25th, 75th, 90th and 95th percentiles along the rainfall gradient. Our definition of a tree is a green leaf crown >3 m2 with an associated shadow (Extended Data Fig. 1).
