In Africa’s Sahel region, agroforestry techniques using traditional plantings known as “fertiliser trees” to increase soil fertility, as well as harvesting and grazing regulations, are offering new solutions to both food and human security.
Such approaches were nearly lost in recent decades following devastating droughts in the Sahel. Now they are making a belated but welcome comeback. According to a 2012 U.S. Geological Survey, “regeneration agroforestry” in the Sahel stands at over 5 million hectares of agricultural fields newly covered by trees – and growing.
