forest fire


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forest fire:

see forestryforestry,
the management of forest lands for wood, water, wildlife, forage, and recreation. Because the major economic importance of the forest lies in wood and wood products, forestry has been chiefly concerned with timber management, especially reforestation, maintenance of
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.

fire, forest:

see forestryforestry,
the management of forest lands for wood, water, wildlife, forage, and recreation. Because the major economic importance of the forest lies in wood and wood products, forestry has been chiefly concerned with timber management, especially reforestation, maintenance of
..... Click the link for more information.
.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

Forest fire

The term wildfire refers to all uncontrolled fires that burn surface vegetation (grass, weeds, grainfields, brush, chaparral, tundra, and forest and woodland); often these fires also involve structures. In addition to the wildfires, several million acres of forest land are intentionally burned each year under controlled conditions to accomplish some silvicultural or other land-use objective or for hazard reduction.

Most wildfires are caused by human beings, directly or indirectly. In the United States less than 10% of all such fires are caused by lightning, the only truly natural cause. In the West (the 17 Pacific and Rocky Mountain states) lightning is the primary cause, with smoking (cigarettes, matches, and such) the second most frequent. Combined they account for 50 to 75% of all wildfires. In the 13 southern states (Virginia to Texas) the primary cause is incendiary. This combined with smoking and debris burning make up 75% of the causes. The 20 eastern states have smoking and debris burning as causing close to 50% of all wildfires. Miscellaneous causes of wildfires are next in importance in most regions. The other causes of wildfires are machine use and campfires. Machine use includes railroads, logging, sawmills, and other operations using equipment.

The manner in which fuel ignites, flame develops, and fire spreads and exhibits other phenomena constitutes the field of fire behavior. Factors determining forest fire behavior may be considered under four headings: attributes of the fuel, the atmosphere, topography, and ignition. A forest fire may burn primarily in the crowns of trees and shrubs (a crown fire); primarily in the surface litter and loose debris of the forest floor and small vegetation (a surface fire); or in the organic material beneath the surface litter (a ground fire). The most common type is a surface fire.

The U.S. Forest Service has developed a National Fire Danger Rating System (NFDRS) to provide fire-control personnel with numerical ratings to help them with the tasks of fire-control planning and the suppression of specific fires. The system includes three basic indexes: an occurrence index, a burning index, and a fire load index. Each of these is related to a specific part of the fire-control job. These indexes are used by dispatchers in making decisions on setting up firefighting forces, lookout systems, and so forth.

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

forest fire

[′fär·əst ‚fīr]
(forestry)
Uncontrolled combustion of forest fuels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In addition to setting up the rescEU fleet, the European Commission is strengthening its monitoring and coordination capacity to prepare for the forest fires season.
At least seven forest fires have already been recorded in Sagada, Mountain Province.
Secretary Roy Cimatu has placed all regional offices of the Department of Environment and Natural Resources (DENR) on alert for forest fires.
The training covered: the importance of fire, impacts of forest fire, ways and means of forest fire control ensuring human safety and security, preparedness for forest fire control, establishing fire lines and their maintenance.
Talking to The Frontier Post DFO Abbottabad Sardar Saleem and DFO Haripur Rizwan Shah told that on Saturday at about 7 p.m forest fires erupted in Goreeni area where forest team responded timely but, unfortunately due to wind blowing jungle caught fire and spread rapidly as a result they get succumbed.
Forest officials said most forest fire incidents were adeliberate acts.
The company added that the restart of the facility will be entirely dependent on the status of the forest fire. Once the fire is under control and it is deemed safe to return to site, operations will resume as soon as possible.
Summary: The Association of Forests and Conservation and the Agriculture and Environment ministries rolled out a new awareness campaign Tuesday to prevent forest fires this summer, but civil society activists say that it's not enough.
In the video, which was taken by an automobile's cam, is seen the dimension of the forest fire how huge there many cars are trying to move forward in the flames wrapping the trees totally.
(http://www.latimes.com/news/nation/nationnow/la-na-nn-colorado-black-forest-fire-20130613,0,7131731.story?track=rss) According to the Los Angeles Times , El Paso County Sheriff Terry Maketa held a news conference on Thursday to announce that the Black Forest Fire has now consumed more than 15,000 acres of Colorado Springs land as well as roughly 360 homes.
FOREST FIRE are set to burn up Middlesbrough's Westgarth Social Club for the second time in a little over 12 months.
Osaka, July 6, 2011 - (JCN Newswire) - Morita Holdings Corporation (headquartered in Osaka and Tokyo; represented by President Masahiro Nakajima; stocks listed on the First Section of the TSE and OSE) has been awarded a 2011 IDEA Gold Award - the highest possible award - in the Commercial and Industrial Products category for its forest fire fighting concept car.

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