The single biggest management problem with the lands that are presently burning is 100 years or so of attempted fire suppression, which has resulted in massive fuel accumulation and a transistion to dense, brush dominated forests filled with combustable litter. Western forests, especially the mediteranean chapperal and pine forests of southern Califora, where historically fire maintained, with an average fire cycle on the order of about every ten years or so (with lots of regional variation). That suppresed the brush and cleaned out the fuels, as well as stimulating new growth, sending a pulse of nutrients into the soil, and so on.
Fire suppression has disrupted that a natural fire cycle and created hideously dangerous conditions. The two primary justifications for fire suppression are 1) forest protection, and 2) human habitation protection. The first is based largely on protection of timber value, rather than habitat value, and is essentially bogus. As I said, it has resulted in conditions that are a ticking time bomb, and which virtually guarantee large scale forest destruction. The second justification is more difficult to deal with -- to some degree, building homes up in the canyons of the Southern California coast range is just a dumb thing to do, sort of like building on land that you know floods every 25 years or so, especially if home-owners insist on letting the chappperal grow near their houses, putting plants in their yards, etc.
The only way to alleviate this situation is to let the fires burn, and to set them intentionally whenever fuel loads begin to accumulate before they reach truely dangerous levels. This isn't popular with the owners of million dollar homes in the hills, or with their insurance companies, but nature isn't always accomodating.
As for the bark beetles, the Dendroctonus beetle outbreaks in some southern California forests have exacerbated fire conditions, but only because those conditions were already dangerously bad. Beetle outbreaks -- like low to moderate intensity fires -- are part of normal forest ecology. They are intensified by poor logging sanitation, which provides virtually unlimited brood habitat for colonizing beetles, and by many conditions which stress otherwise healthy conifers. In particular, the current outbreaks were certainly worsened, if not triggered, by drought, severe competition between trees in stands that would normally be maintained at much lower densitites by fire, and by damage caused by extensive human encroachment (e.g. forest fragmentation by roads and homes, tree damage during logging, poor logging sanitation, and so on).
Mechanically thinning the forest is not the anser -- doing so economically almost always increases fuel loads, at least in the short term, and leads to denser, more dangerous stands in the longer term. Timber sales always increases fuel loads, at least in the short term, and leads to denser, more dangerous stands in the longer term. Timber sales always take out the more merchantable wood, not the low volume brushy stuff that's the problem. The only real answer is regular fire. And the insurance companies be damned.
You can thank mike_c for this post from an earlier thread here
http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=102&topic_id=186692Here is another post by Clete in the same thread:
There is a film that is shown at the Museum of Natural History at Exhbition Park in Los Angeles that explains the process of seasonal fires in the canyons of California. You should go there and see it.
It's a natural process by nature to clear out the dead debris to make way for new growth on the old growth trees that survive the process just fine. The fires burn away all the old and diseased parts of the trees to encourage new growth much like pruning old and decaying parts of ones shrubs encourages new growth.
Fire also purges the diseases and pests that destroy the forests. Taking the good trees only makes the forests more vulnerable. Have you ever seen what happens when a logging company goes in and clear cuts a stand of trees? Well I have. The first thing they do is strip off all the parts off to the logs that they don't want. They leave in piles to dry out and this debris increases the fire vulnerability of the area. They also leave behind the diseased logs, which are of no use to them. People who live in the canyons know the danger.
Eventually, they might go in and plant seedlings, but instead of planting the variety that nature does, they plant only the species they want to encourage and usually they are genetically similar. IF a pest attacks a tree that is susceptible to it, another genetically different tree that has evolved a defense against that pest will survive and the damaged trees will be only a few. Not only that, varieties of the species often protect each other from diseases and pests.
This makes Bush's healthy forest initiative nothing but crock of shit and a big boon to the destructive practices of the logging companies. Sorry but Bush and the crooks in Washington have lied to you again and are now scape goating the very organizations who are trying to stop these practices.