Maps of dryland extent commonly employ a climate-based approach measured using the Aridity Index , or consider the extent of dryland vegetation. The two approaches sometimes do not demarcate the same geographical areas as being drylands, particularly when projecting future changes . Dryland dynamics therefore need to be viewed specifically in relation to the definitions and measurements being used. From 1982 to 2015, unsustainable land use and climate change combined caused desertification of 6% of the global dryland area, while 41% showed significant greening , and 53% of the area had no notable change . In contrast Yuan
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report