A new study on Canada's record 2023 wildfires found that most of the carbon released came from burning peat and soil, not from trees. Researchers warn that a warming climate is making these vast underground carbon deposits more vulnerable to fire, which could significantly worsen the country's overall emissions footprint. The findings challenge the common assumption that wildfire emissions are mainly from above-ground biomass. Peatlands store massive amounts of carbon accumulated over thousands of years, and when they burn, that carbon is released much faster than it can be reabsorbed. This has direct implications for Canada's climate accounting and forest management strategies. For anyone tracking carbon markets or national emissions inventories, this study matters because it suggests current models may be underestimating the long-term impact of wildfires on Canada's carbon budget. The research points to a feedback loop where hotter, drier conditions lead to more peat fires, which in turn release more carbon and accelerate warming.
