Drought-induced tree mortality attributed to anthropogenic climate change has caused up to 20% loss of trees in the period 1945-2007 in three regions in Africa and North America . It has also potentially contributed to over 100 other cases of drought-induced tree mortality across Africa, Asia, Australia, Europe, and North and South America . Field observations have documented post-mortality vegetation shifts . Timber cutting, agricultural expansion, air pollution and other non-climate factors also contribute to tree death. Increases in forest insect pests driven by climate change have contributed to tree mortality and shifts in carbon dynamics in many temperate and boreal forest areas . The direction of changes in carbon balance and wildfires following insect outbreaks depends on the local forest insect communities . 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report