When you just burn a forest, you release carbon that was in the atmosphere a few years or decades ago. Those trees would die eventually, and most of the carbon would go to the atmosphere anyway.
When you dry a swamp and burn a peat bog, you release carbon that was in the atmosphere centuries ago. Under normal circumstances, that carbon would stay underground for millennia.
That's not from sequestered carbon, so over a decade it is probably zero net CO2 contribution - forests grow and sequester carbon, then they burn and release it, rinse, repeat.
Now, the methane released from underneath thawing permafrost - that's actually dangerous - but there's not much that can be done to manage that to my knowledge...
https://en.wikipedia.org/wiki/2010_Russian_wildfires
https://en.wikipedia.org/wiki/2015_Russian_wildfires
I bet that contributed a lot to the 2010-s CO2.