May 8, 2013 Three Different Types of Forest Fires
Australia, Radio 1, National: Ockham’s Razor — The War Against Nature
Fire is an integral part of western forests and all forest types throughout North America, Australia and elsewhere have evolved and adapted to fire.
Three types of forest fires occur.
When treetops burn it is called a crown fire and its lethal for most trees. In California oaks and big cone Douglas-fir, for example can regenerate new leaves after being scorched.
Other trees across the West have developed a strategy to take advantage of crown fires. In the Rocky Mountains and elsewhere, for instance, lodgepole pine (except in California and along the Pacific coast) cones open after the heat of a crown fire, releasing millions of seeds which quickly recolonate the land. Lodgepole pine forests are usually of the same age, because all the trees started to grow at the same time following a fire. If, however, fire is suppressed in lodegpole pine forests then conditions are created for another agent of change, the mountain pine bark beetle. It enters the ecosystem and ultimately creates new forests.
Surface fires burn from the top of the forest floor to about 12 feet above ground. Certain trees like Douglas-fir, ponderosa pine, and Sequoia’s have adapted to tolerate this type of fire. They hold their branches high in the crown so that the flames cannot ignite the foliage. And they have at least one-foot thick bark, which helps protect the trunks of these trees from the heat of fast moving surface fires. If you look closely at old living Douglas-fir, ponderosa pine or western larch trees you will notice that they have blackened bark or fire scars indicating the past occurrence of surface fires.
The ponderosa pine ecosystems may naturally experience surface fires that occur every 15 to 20 years. A Smokey Bear policy of stopping all fires across the West for about 95 years has dramatically changed the structure of these forests. There are now hundreds of trees and thousands of saplings per acre instead of dozen or so big trees surrounded by a sea of native grasses. The mature, big old ponderosa’s are well adapted to surface fires. Now, however, when fire gets into unnaturally overcrowded ponderosa forests, smaller trees act as a ladder for surface fires enter the crown and become crown fires. Ponderosa have not evolved nor adapted to contend with crown fires and so the entire forested ecosystem burns. It then takes decades for this ecosystem to naturally recover because ponderosa seeds becomes limited. And in some cases the ponderosa forests may not return as parts of the West are becoming to dry for these forests to re-establish.
The third type of forest fire is a ground fire. When the forest floor and all its decomposing wood, fauna, bacteria and fungi become alight, it’s a disaster. It can burn for months under a snow pack and flare up again in the springtime. This is a common problem in higher elevation forests and throughout British Columbia and Alaska. Ground fires scorch the forest floor and deplete soil nutrients that take decades, and in some cases a century, to accumulate.
One of the major concerns about climate change are droughts. Droughts promote the drying out of the forest floors which in turn makes them more prone to ground fires.
Fire must be thought of as one of Mother Nature’s agents of change. And wild forests like all wild ecosystems are constantly experiencing change. Clearly, it is not fiscally prudent to continue to suppress all wildfires yet many communities are at risk like Los Angeles, for instance. They must be fireproofed by manually thinning surrounding forests. This can be achieved by utilizing the labor force of prison inmates, which incidentally are currently used on the fire lines in California. During the winter months prison inmates could thin-out, for a fraction of the tax-payers cost of professional fallers, the over stocked forests surrounding millions of homes across the West.
See Dr Reese in an impromptu interview along a beach in the Pacific Northwest
Trailer from Dr Reese’s Planet and Fire Forests
Inland Business article August 2004 FIRES and PRISON INMATES
New Mexico Fire story March 2005
Denver Post Drought and Beetles Dec 6, 2006
Orange County Register Drought – PRISON INMATES — Aug 6, 2007
Desert Sun, Palm Springs — Gannett — Fire PRISON INMATES Aug 21, 2008
Santa Monica Daily Press Drought — PRISON INMATES — Sept 3, 2009
Earth Dr Reese Halter is an award-winning broadcaster and distinguished biologist. His latest books are The Insatiable Bark Beetle and The Incomparable Honeybee
Text © by Dr Reese Halter 2014. All rights reserved.
Tags: Alaska, Australian Conservation Foundation, Avaaz, california, California wildfires, climate change, Colorado wildfires, crown fires, Defenders of Wildlife, Douglas-fir, Dr Reese Halter, drought, Ducks Unlimited, ellen degeneres, environment, Environmental Defense Fund, firestorms, global warming, ground fires, Jacque Cousteau, John Denver, lodgepole pine, Los Angeles, mountain pine beetles, Nature Conservancy, New Mexico wildfires, Oprah, ponderosa, Rocky Mountains, science, Sequoia, Steve Irwin, surface fires, water, wild fires, world wildlife Fund
- 20 comments
- Posted under climate change, ecosystems, environment, plants, trees, wildfires
Permalink # Topics about Communitys » Archive » Three Different Types of Forest Fires said
[…] Matzav Editor created an interesting post today on Three Different Types of Forest FiresHere’s a short outlineThree types of forest fires occur. When treetops burn it is called a … prudent to continue to suppress all wildfires yet many communities are at […]
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Dr Reese
said
Thanks and c’mon back y’all! Dr reese
Permalink #
Karen Mohr
said
Thanks Dr. Reese for that informative post. A new way to ponder forest fires.
Permalink #
Dr Reese
said
You are MOST welcome – thanks for your outstanding publication at Tree Hugger, Cheers Karen! Dr Reese
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sonia mathur
said
I am very happy to read this types of fire.
I am waiting for your another new forest related information.
Thanks
Permalink #
Dr Reese Halter
said
Thanks Sonia — C’mon back any time and I add a couple new posts on fire in the coming months! Cheers, Dr Reese
Permalink # Three Different Types of Forest Fires « DrReese's Blog | Forestry Science Applied said
[…] See original here: Three Different Types of Forest Fires « DrReese's Blog […]
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Jacki
said
Wildfires are a growing concern, not only in frequency but severity too. Use fire wisely – it makes a great slave but a poor master. Your post is very timely, as we’re getting closer to wildfire season here in B.C., in fact it gets earlier every year, and they already have some bans in effect around Kamloops.
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Dr Reese Halter
said
Thanks for dropping by Jacki! C’mon back!! Dr Reese
Permalink #
Tom Ranch
said
Check out how this local home owner dealt with choosing a roofing material for a new home in a high hazard fire zone:
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hazardous materials
said
Thank you for some other great article. The place else could anybody get that type
of info in such an ideal means of writing? I have a presentation subsequent week,
and I am at the search for such information.
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Earth Dr Reese Halter
said
Thank you & Welcome Aboard — C’mon back soon
🙂 Earth Dr Reese Halter
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Dr.Reed Richards
said
really good article on forest fire Dr. Reese Halter.It has made my research about the forest fires in Inda a lot easier.
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sarah
said
hello Dr Reese Halter, i read your article: Protect Tarkine’s Ancient Frankland River Forests (huffingtonpost), thank you for raising awareness of this problem. I hope your upcoming book is printed on recycled or at least fsc certified paper. even if people do not buy tasmanian oak timber that comes from these or similar forests (victorian ash is no better), it is easy to forget where paper comes from. Australia has some of the worst forest management, and burning forests after clearfelling is a part of it. eucalypts are fire-prone, but fires often stop when they reach rainforest. with burning, the industry is reducing the survival capacity of the forest, by reducing the diversity of species. rainforest regrowth is destroyed by fire, and the ancient tall “mountain ash” trees also die in a bushfire when they release seed, so they can only grow so old because the rainforest around them is protecting them from fire.
and by the way, gordon is right in his comment, the tarkine is in the northwest not northeast of tas.
for the forest,
sarah gunn
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Earth Dr Reese Halter
said
Save Nature Now will be printed on recycled paper. Thank you.
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Earth Dr Reese Halter
said
BTW I corrected it to the Northwest. Thank you, Sara
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sarah
said
Also check out this action: http://www.melbournefoe.org.au/no_more_dead_koalas_great_forest_national_park_now?utm_campaign=koala_action&utm_medium=email&utm_source=friendsofearthmelbourne