Fire seasons have lengthened on one-quarter of vegetated areas since 1979 as a result of increasing temperature, aridity and drought . Field evidence shows that anthropogenic climate change increased area burned by wildfire above natural levels in western North America in the period 1984-2017: a doubling above natural for the western USA and 11 times higher than natural in one extreme year in British Columbia . In the Amazon, the Arctic, Australia and parts of Africa and Asia, burned area has increased, consistent with, although not formally attributed to, anthropogenic climate change. Wildfires generate up to one-third of ecosystem carbon emissions globally, a feedback that exacerbates climate change . Deforestation, draining of peatlands, agricultural expansion or abandonment, fire suppression, and inter-decadal cycles such as the El Niño-Southern Oscillation , can exert a stronger influence than climate change on increasing or decreasing wildfire in some regions . Increase in wildfire from the levels to which ecosystems are adapted degrades vegetation, habitat for biodiversity, water supplies and other key aspects of the integrity of ecosystems and their ability to provide services for people . 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report