I've read several articles in the past two years that essentially say we are now dealing with unintended consequences related to forest fires:
Mother Nature historically had forest fires.
We have become good at fire suppression.
"Fuel" builds up in the forests due to fire suppression, and a...
An article about Sisters, Oregon and reducing the fuel (e.g. brush, dead trees) in advance to reduce the severity of a forest fire.
Forest-thinning project saved homes but highlights obstacles | HeraldNet.com