The overall effect of climate change on the extent of northern peatlands is still debated . It is expected that climate change will drive the expansion of high-latitude peatlands poleward of their present distribution due to warming, permafrost degradation and glacier retreat, which could provide new land and conditions favourable for peat development  , as seen during the last de-glacial warming  . Peatland area loss  near the southern limit of their current distribution or in areas where the climate becomes unsuitable is also expected    , but they could persist if moisture is maintained via their capacity to self-regulate. In western Canada, a study suggests that peatlands may persist until 2100, even though the climate will be less suitable . Simulations suggest that climate change-driven increases in temperature and atmospheric CO2 could drive reductions in the northern peatland area up to 18% , 41%  and 61%  by 2300 . This is in contrast with the findings of northern peatland persistence and expansion under RCP2.6 and RCP6.0 scenarios in 1861-2099 by another modelling study . In the Tropics, the only available study suggests peatland area will increase until 2300, mainly due to increases in precipitation and the CO2 fertilisation effect .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report