New review paper by Ribeiro-Kumara et al., 2020 focuses on four different standpoints to explore the effects of fire on greenhouse gas (GHG) fluxes in boreal forests: fire severity, time after fire, physical environment, and temperature sensitivity (Q₁₀). High-severity fires have stronger effects on soil CO2 efflux than low-severity fire. Soil CO2 efflux generally increases as a function of time after fire, with the re-establishment of vegetation cover governing the recovery of soil CO₂ emissions. Fire effects on soil CO2 emissions in permafrost areas are tightly linked to fire-induced changes in SOM throughout the soil profile. The fire-severity effects on CH₄ and N₂O fluxes are still uncertain, since very few studies have been conducted after low-severity fires. Upland boreal forests in permafrost and nonpermafrost areas seem to act as CH₄ sinks during the fire succession, although a strong trend has not yet been identified. The fire effects on CH₄ fluxes may be associated with soil moisture and diffusivity conditions at the time of fire and active layer depth after fire. The direction of the N₂O fluxes across a fire succession is still uncertain, while soil temperature is the most studied driver for N₂O emissions.