You do realize that "clearing forests" is precisely the opposite of what forests need, right? These ecosystems burn, naturally, on a regular basis: many plants and animals absolutely require it. "Firebreaks" are not natural. Clearing forests of undergrowth also doesn't prevent forest fires. What it does mean is that, instead of smaller fires happening on a regular basis, you get more absolutely devastating ones, they just don't happen as often: old trees that haven't been replaced by new ones (because they can't release seeds because there haven't been fires, plus weeds that aren't naturally endemic are able to grow in "cleared-out" areas, and thus prevent seedlings of trees from growing where fire-depdendant cones can actually work) make for GREAT kindling.
Don't live in areas where forest fires happen.