The world’s most ambitious reforestation project, the Great Green Wall of Africa, has covered only 4% of its target area but is more than halfway towards its 2030 completion date.
More funds, greater technical support and tighter oversight will be needed if the plan to plant 100m hectares of trees and other vegetation is to be realised.
The Great Green Wall was conceived in 2007 by the African Union as a 7,000km (4,350-mile) cross-continental barrier stretching from Senegal to Djibouti that would hold back the deserts of the Sahara and Sahel.
It would improve livelihoods in one of the world’s poorest regions, capture carbon dioxide and reduce conflict, terrorism and migration.
Ethiopia, which started reforesting earlier than other nations in the region, is a frontrunner, having reportedly planted 5.5bn seedlings on 151,000 hectares of new forest and 792,000 of new terraces.
A major problem is monitoring. Individual nations provide their own estimates, but there are doubts as to how many of the 12m trees planted in Senegal, for example, have survived.