A firefighter sprays water on a house burning during the Jesusita fire in Santa Barbara, California on May 6, 2009. Photo: Gene Blevins / Reuters
Just four weeks ago, fire crews battled the Sunshine fire in the foothills west of 麻豆影院. Low humidity, record-high temperatures and 40 mile-per-hour gusts of wind helped fan flames that forced over 1,000 people to evacuate their homes. Firefighters quickly contained the wildfire, with no injuries or damage reported. But the reality of a blaze this serious in March raises concerns about how we deal with wildfire in the western United States.
, current wildfire policy can鈥檛 adequately protect people, homes and ecosystems from the longer, hotter fire seasons climate change is causing.
Efforts to extinguish every blaze and reduce the buildup of dead wood and forest undergrowth are becoming increasingly inadequate on their own. Instead, the authors鈥攁 team of wildfire experts鈥攗rge policymakers and communities to embrace policy reform that will promote adaptation to increasing wildfire and warming. 听
鈥淲ildfire is catching up to us,鈥� said lead author Tania Schoennagel, a research scientist at CU 麻豆影院鈥檚 . 鈥淲e鈥檙e learning our old tools aren鈥檛 enough and we need to approach wildfire differently.鈥�
This means accepting wildfire as an inevitable part of the landscape, states the new paper published today in the journal Proceedings of the National Academy of Sciences.
The western U.S. has seen a 2-degrees-Celsius rise in annual average temperature and lengthening of the fire season by almost three months since the 1970s; both elements contribute to what the authors refer to as the 鈥渘ew era of western wildfires.鈥� This pattern of bigger, hotter fires, along with the influx of homes into fire-prone areas鈥攐ver 2 million since 1990鈥攈as made wildfire vastly more costly and dangerous.
鈥淔or a long time, we鈥檝e thought that if we try harder and do better, we can get ahead of wildfire and reduce the risks,鈥� said Schoennagel, who also is an adjunct faculty member in CU 麻豆影院鈥檚 . 鈥淲e can no longer do that. This is bigger than us and we鈥檙e going to have to adapt to wildfire rather than the other way around.鈥�
As part of this adaptation process, the authors advocate for actions that may be unpopular, such as allowing more fires to burn largely unimpeded in wildland areas and intentionally setting more fires, or 鈥渃ontrolled burns,鈥� to reduce natural fuels like undergrowth in more developed areas. Both these steps would reduce future risk and help ecosystems adapt to increasing wildfire and warming.
They also argue for reforming federal, state and local policies that have the unintended consequence of encouraging people to develop in fire-prone areas. Currently, federal taxpayers pick up the tab for preventing and fighting western wildfires鈥攁 cost that has averaged some $2 billion a year in recent years. If states and counties were to bear more of that cost, it would provide incentive to adopt planning efforts and fire-resistant building codes that would reduce risk.
Re-targeting forest thinning efforts is another beneficial reform suggested by the authors. The federal government has spent some $5 billion since 2006 on thinning dense forests and removing fuel from some 7 million hectares (17 million acres) of land, often in remote areas. But these widespread efforts have done little to reduce record-setting fires. Directing thinning projects to particularly high-risk areas, including communities in fire-prone regions and forests in particularly dry areas, would increase adaptation to wildfire, the authors said.
Additionally, as climate change forces species to move their ranges, some may vanish entirely. Familiar landscapes will disappear, a fact that makes many people balk. But such changes, including those caused by wildfire, could be necessary for the environment in the long run, says Max Moritz, a fire scientist at the University of California Cooperative Extension and a co-author on the paper. 鈥淲e need the foresight to help guide these ecosystems in a healthy direction now so they can adjust in pace with our changing climate,鈥� he said. 鈥淭hat means embracing some changes while we have a window to do so.鈥�
Critical to making a policy of adaptation successful, said Schoennagel, will be education and changing people鈥檚 perception of wildfire. 鈥淲e have to learn that wildfire is inevitable, in the same way that droughts and flooding are. We鈥檝e tried to control fire, but it鈥檚 not a control we can maintain. Like other natural disasters, we have to learn to adapt.鈥�
Additional co-authors of the new study include听Jennifer听Balch,听Hannah Brenkert-Smith and Nathan Mietkiewicz听of CU 麻豆影院;听Philip听Dennison of the University of Utah;听Brian Harvey of the University of Washington;听Meg听Krawchuk of Oregon State University;听Penelope Morgang of the University of Idaho;听Ray Rasker of Headwaters Economics;听Monica听Turner of the University of Wisconsin-Madison;听and Cathy Whitlock of Montana State University.
