In summary, terrestrial ecosystems contain 3000-4000 GtC in vegetation, permafrost and soils, three to five times the amount of carbon in unextracted fossil fuels and 4.4 times the carbon currently in the atmosphere . Tropical deforestation, the draining and burning of peatlands and other LULCCs emit 0.9-2.3 GtC yr1, ~15% of the global emissions from fossil fuels and ecosystems . Terrestrial ecosystems currently remove more carbon from the atmosphere  than they emit , a net sink of -1.9+1.1 Gt yr1  . Thus, tropical rainforests, Arctic permafrost and other ecosystems provide the global ecosystem service of naturally preventing carbon from contributing to climate change .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report