wildland fire

 uncontrolled fire in a forest (forest fire), grassland, brushland (brush fire), or land sown to crops.

      Fire danger in a wildland setting varies with weather conditions: drought, heat, and wind participate in drying out the timber or other fuel, making it easier to ignite. Once a fire is burning, drought, heat, and wind all increase its intensity. Topography also affects wildland fire, which spreads quickly uphill and slowly downhill. Dried grass, leaves, and light branches are considered flash fuels; they ignite readily, and fire spreads quickly in them, often generating enough heat to ignite heavier fuels such as tree stumps, heavy limbs, and the matted duff of the forest floor. Such fuels, ordinarily slow to kindle, are difficult to extinguish. Green fuels—growing vegetation—are not considered flammable, but an intense fire can dry out leaves and needles quickly enough to allow ready ignition. Green fuels sometimes carry a special danger: evergreens, such as pine, cedar, fir, and spruce, contain flammable oils that burst into flames when heated sufficiently by the searing drafts of a forest fire. (fire fighting)

      Tools for fighting wildland fires range from the standard equipment of urban fire departments to portable pumps, tank trucks, and earth-moving equipment. Firefighting forces specially trained to deal with wildland fires are maintained by public and private owners of forestlands. Such a force may attack a fire directly by spraying water, beating out flames, and removing vegetation at the edge of the fire to contain it behind a fire line. When the very edge is too hot to approach, a fire line is built at a safe distance, sometimes using strip burning or backfire to eliminate fuel in the path of the uncontrolled fire or to change the fire's direction or slow its progress. Backfiring is used only as a last resort.

      Aircraft were first used in fighting wildland fires in California in 1919. Airplanes and helicopters are primarily used for dumping water, for observation, and occasionally for assisting in communication and transporting personnel, supplies, and equipment.

* * *


Universalium. 2010.

Look at other dictionaries:

  • Wildland fire suppression — refers to the firefighting tactics used to suppress wildfires. Wildland firefighting requires different techniques, equipment, and training from the normal structure fire fighting found in populated areas. Working in conjunction with specially… …   Wikipedia

  • Wildland fire emissions — Wildland fire and wildland fire atmospheric emissions have been a part of the global biosphere for millennia. [Pyne, S.J. 1995. World fire: The culture of fire on earth. University of Washington Press. 384 pp. [ISBN 0 295 97593 8] ] . The major… …   Wikipedia

  • Wildland fire engine — A wildland fire engine is a type of fire apparatus designed to combat fires in areas unreachable to conventional engines. These fire engines are equipped with four wheel drive, rugged suspension and high wheel clearance for mountainous, dirt road …   Wikipedia

  • Wildland fire tender — –A wildland fire tender is a specialized vehicle capable of bringing water, foam, or dry chemicals to fire trucks in the field that are engaged on the fireline. These vehicles are specifically designed for fire fighting often with four wheel… …   Wikipedia

  • International Association of Wildland Fire — The International Association of Wildland Fire [http://www.iawfonline.org (IAWF)] is a non profit, professional association created to facilitate communication and provide leadership for the wildland fire community. The IAWF s membership includes …   Wikipedia

  • Glossary of wildland fire terms — The following is a glossary of wildland fire terms. Except where noted, terms are taken from a 1998 Fireline Handbook transcribed for a Conflict 21 counter terrorism studies website by the Air National Guard. [… …   Wikipedia

  • Fire safe councils — are grassroots community based organizations which share the objective of making California s communities less vulnerable to catastrophic wildfire. Fire safe councils accomplish this objective through education programs and projects such as… …   Wikipedia

  • Wildland Firefighter Foundation — is a non profit organization that provides assistance to fallen firefighters families and to firefighters injured in the line of duty. We do not receive government funding, therefore services are available for anyone performing wildland duties:… …   Wikipedia

  • Fire on the Mountain (1999 book) — Fire on the Mountain is a 1999 non fiction book by John Norman Maclean that describes the most famous wildland fire of the late 20th century. The book describes the events and aftermath of the South Canyon Fire on Storm King Mountain on July 6,… …   Wikipedia

  • Fire hydrant — in Charlottesville, Virginia, USA A fire hydrant (also known colloquially as a fire plug in the United States or as a johnny pump in New York City, because the firemen of the late 19th century were called Johnnies[ …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.