Savannas consist of co-existing trees and grasses in tropical and temperate regions . The global trend of woody encroachment reported in AR5  is continuing  , with increases occurring in temperate savannas in North America  and tropical savannas in South America , Africa  and Australia  . Additionally, the forest expansion into mesic savannas reported in AR5  is continuing in Africa, South America and Southeast Asia . Extreme high rainfall anomalies have also contributed to an increase in herbaceous and foliar production in the Sahel .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report