The study, led by the University of Exeter and Texas A&M University, examines peatland losses over human history and predicts these will be "amplified" in the future.
Peatlands are expected to shift from an overall "sink" (absorbing carbon) to a source this century, primarily due to human impacts across the tropics, and the study warns more than 100 billion tons of carbon could be released by 2100, although uncertainties remain large.
Peatlands are currently excluded from the main Earth System Models used for climate change projections – something the researchers say must be urgently addressed.
"Peatlands contain more carbon than all the world's forests and, like many forests, their future is uncertain," said Professor Angela Gallego-Sala, of Exeter's Global Systems Institute.
Read more at: University of Exeter
Arctic peatland in Svalbard (Photo Credit: Angela Gallego-Sala)