See a qualified forester for the specific area. There are many different forests and they have different needs so no universal statement can be made.

Most of the forests in north America need regular fires and have been harmed by centuries of white men putting them out. However that means centuries of overgrowth and so starting one now is a too hot fire that isn't helpful either. The great plains need to burn yearly as well.

A proper fire should leave lots of charcoal behind that gets beat into the soil and naturally permanently sequesters tons of carbon. So this is a factor in global warming.

The problem is a few people have money for lawyers and anytime an expert proposes a fire they get a judge to issue an injunction and stop it until it is too late to safely burn. I'm not sure what to do about this but it is something to oppose.