It seems like a no-brainer: the catastrophic fires that have swept through California in recent years could be made much less severe by a more effective and frequent use of controlled burns to thin the forest more. But although that seems to have some basic truth to it, the situation isn’t so simple nor is it so easy to achieve these burns. And the problem is not just the “save the endangered animals” groups. In fact, in reading about the pros and cons of the process, I haven’t found much about the environmental effect on animals as being the stumbling block. More problematic are the health problems of humans when the air quality suffers, as well as their perceptions about how much planned fire is tolerable.
At this point, California seems willing to increase the number of planned burns:
“Putting prescribed fire back out on the landscape at a pace and scale to get real work done and to actually make a difference is a high priority,” says Cal Fire chief Ken Pimlott. “It really is, and it’s going to take a lot of effort.”
In a February report, the watchdog Little Hoover Commission concluded that the way California landowners have collectively managed forests is an “unprecedented catastrophe.” In May, Gov. Jerry Brown issued an executive order to improve forest management, and with it, a dramatic change.
Now Pimlott says that Cal Fire intends to triple the amount of prescribed fire on lands the state controls.
“We can prevent these large catastrophic fires or at least reduce the intensity when fires do occur,” he says. “So a little bit of smoke now and a little bit of inconvenience now is well worth offsetting these large damaging fires.”
That’s a small step toward addressing a major deficit. According to the commission’s report, an area the size of Maryland—including state, private and federal land—needs maintenance or planned fire to become healthier.
So even Jerry Brown has been on board recently—although of course he’s not going to be governor for very long.
There are the obstacles to doing this, however:
Even with approval, federal wildland managers waited months for the right weather and environmental conditions here. Hinckley says those criteria range from wind speed and temperature, to how much water is in the soil. It was a very wet spring; on-and-off rains created several months of delay here.
Thick vegetation in the understory is a limiting factor, too. Hinckley says her crews often need to chop and flatten vegetation to make safe conditions for burning.
Even when all of the stars align, Hinckley says she might not have warm bodies for the job. That happened last fall, when fires up and down the state kept fire crews hamstrung.
“I didn’t have crews to perform prescribed burns,” she says, “because the wildfires take priority.”
Even when the permit is done and the weather is right and crews are available, the air might already be too polluted to add more smoke to the mix. Air regulators grant permission for burn days, and it’s hard to get: regional atmospheric conditions mean that smoke from Sierra Nevada forests funnels toward the central valley, where air pollution is consistently bad.
Whether from wildfire or planned burn, smoke feels like pollution to vulnerable lungs…
“We have to protect public health; that’s our mandate,” says Dar Mims, a meteorologist with the California Air Resources Board. “But we also recognize that we need burning in the forest, and a lot of those trade-offs have to happen in real time because the decisions have to be made—do we want to potentially impact the air basin, or do we want to burn.”
The public is upset when there are a lot of burn days, but there needs to be more education about why it’s important to do it anyway, plus the fact that there’s less air pollution from a controlled burn than a wildfire.
There’s much more more at the link, and I strongly suggest you read it.
There are dissenting opinions, however, about the value of thinning. Here’s one of them; the basic thrust of that article, however, is that thinning (another supposed forest-control strategy) is not particularly effective in reducing the severity of major forest fires out West:
In fact, mechanical thinning alone often INCREASES fire spread by putting more fine fuels on the ground.
Additionally, thinning in some instances can INCREASE fire spread by exposing the forest floor’s fuels to greater sun drying and greater penetration by wind through the open forest stands. What is surprising to learn is that often the most dense forest stands (i.e. those with the most fuels) do not burn well because they retain moisture the longest, and wind is impeded from pushing flames through such dense forests.
Second, thinning by removing competition between trees and brush often increases rapid regrowth of vegetation. Therefore, any thinning/fuels reduction program must have follow-up maintenance in the form of recurring prescribed burns and/or thinning to be effective. Yet most thinning projects do not even get the first prescribed burning, much less follow up burns.
The author of the article does recommend thinning near structures and towns, but not in general. And what about controlled burning, which is mostly what we’ve been discussing in this post? That’s a lot better, but as we already know it comes with a bunch of problems:
…[P]rescribed burning is risky, and the opportunity for agencies to set fires is limited to short windows of time. Many forest managers are loath to okay a prescribed burn unless conditions are ideal for containment. No one wants to be the person who signed off on a prescribed burn and then had it get away and burn homes to the ground. However, when conditions are good for controlling a blaze, they are usually not good for fire spread.
There is a movement to allow more thinning, but I’m not convinced thinning is the way to go compared with controlled burns (not that it’s either/or):
Members of the Western Caucus have proposed legislation to dramatically change the way forests are managed. If passed, this bill would give power back to local authorities and allow for more aggressive forest thinning without subjecting them to the most onerous of environmental reviews.
While state and federal governments can take measures to enhance forest and wilderness management, private management can also get involved to improve conditions.
One idea is to adopt a policy popularized by the school choice movement: create charter forests that are publicly owned, but privately managed. This would allow forest management to move away from top-down, bureaucratic control to a decentralized and varied system that may better conform with local realities.
Maybe the current fires will jump-start the implementation of better solutions. Knowing how bureaucracies work, however (and the extreme leftward tilt of the California state government), I wouldn’t bet on it.
But maybe there’s really reason for hope. For example, this article (hat tip: commenter “OBloodyHell”) that appeared in the very leftist Mother Jones last year, advocates more controlled burns:
Addressing the problem will require a revolution in land management and in people’s relationship with fire — and there are signs both may be beginning.
As a child in Southern California, Berleman was deeply afraid of wildfire. But at community college, she learned that Native Americans used fire for thousands of years to manage forests and grasslands and protect their villages. Tribes regularly burned California’s oak woodlands, for instance, to remove underbrush and fight pests. It helped them spot prey more easily, keep weevils out of the acorns they gathered for food, and safeguard their homes from wildfire. In 2009, Berleman transferred to the University of California, Berkeley to study fire ecology. There, she worked on her first prescribed burn. “I instantly fell in love with the ability to use fire in a positive way to accomplish objectives,” she says. She trained as a firefighter so she could put fire to use as a land-management tool.
That entire article is worth reading, too, because it indicates a number of ways in which the left—which, after all, is in the driver’s seat in California—could see its way towards supporting a much more aggressive use of controlled burns. One idea is to appeal by saying that Native Americans did it, so it must be good. Another is promoting the knowledge that since controlled burns are more likely to preserve trees than out-of-control wildfires would, the controlled ones disturb animals’ natural habitats far less. Another piece of useful knowledge in appealing to the left would be that the major incredibly hot and uncontrolled wildfires of late are the ones that release a lot of carbon:
The amount of carbon sent to the atmosphere from such an enormous fire is staggering. “It’s ugly,” says Collins. “It’s not only a huge initial loss just from the direct emissions, but it’s slow emission over time as these trees break and then fall to the ground and the decomposition process really gets underway. We’re looking at 30 years or 40 years of pure emissions coming from this area with very little on the uptake side,” Collins says.
Just the initial blaze released 5.2 million metric tons, roughly as much greenhouse gas emissions as 1.1 million passenger cars emit in a year, according to an estimate by Forest Service ecologist Leland Tarnay. It’s too soon to analyze the fire’s total carbon footprint.
Controlled burns are very different, and they often preserve the trees themselves, so their carbon footprint is not so onerous. That idea should appeal to those concerned with global warming.
Here’s how fires ordinarily work in forests that have been treated differently from each other:
The first patch of forest Collins shows me is the control forest, from which fire has long been banned. The understory is so thick with small trees and shrubs that it’s difficult to walk; we have to step over tangles of dead trees and branches. If a fire were to strike this area, it would easily climb from the ground to the lower branches and up into the canopy. “And then it can really spread,” Collins adds.
In the next patch of forest we visit, loggers cut down and sold some of the medium-sized trees in 2002. Then they shredded the small trees and underbrush using a big machine called a masticator, and spread the remnants on the forest floor. Now, the trees are widely spaced; sunlight shines through the canopy. The High Sierras are visible in the distance. If a fire were to come through here, Collins says, it likely would stay on the ground, and wouldn’t harm the trees or emit much carbon.
Again, I suggest you read the whole thing. It’s actually quite fascinating, and it is in agreement with the idea that although thinning has some benefits, controlled burns are a more effective way to go:
North says thinning is not a solution for much of the Sierra Nevada. Only 28 percent of the landscape can be mechanically thinned, he calculated; the rest is too steep or remote. “You cannot think your way out of the problem,” he says. “You’ve got to use fire.”
Official Forest Service policy has acknowledged this. The 2014 interagency National Cohesive Wildland Fire Management Strategy calls for expanding the use of prescribed burns and letting more wildfires burn. “It’s just not being followed; that’s the real problem,” North says. “Everyone knows what we’ve got to do. But it’s not being done.”
Why isn’t it being done more already? Partly because of old-fashioned thinking on the part of fire managers, but a big role is played by increased house-building in areas near or even in forests, and the fear of lawsuits from homeowners if planned fires get out of control and do damage to human dwellings.
The obstacles to controlled burns at this point do not seem to be the conservationists:
Craig Thomas, conservation director of Sierra Forest Legacy, has been calling for more natural and prescribed fire in the Sierra for two decades. He believes that after the Rim, Rough and King fires, the public and policymakers better understand the threat of unnaturally overgrown forests.
That was written before the current fires, and so I imagine that at this point the public understands the problem even better, although they might not understand the difference between thinning and controlled burns.
The article goes on to say that since 2015 the area of California in which fires are allowed to burn without stopping them has increased, and the number of controlled burns has increased as well. It seems it would be a good thing if the recent horrific fires in both northern and southern California would push residents of the state to accept more of the inconvenience and expense of controlled burns, in order to offset the far more catastrophic effects of major and uncontrolled forest conflagrations that spread to population centers.