Wildfires - is one of the most dangerous natural disasters on the planet.While they killed a huge number of living beings.Often fire killed entire villages or village.Wildfires are subject to rigid classifications.For each type of combustion and spread has its own terms and concepts.This serves to facilitate the identification of targets for fighting the fire.To combat the elements are utilized not only ground forces but also special firefighting helicopters and airplanes.Often, volunteers are encouraged to extinguish the fire, as well as parts of the military district.
Wildfires are forestry and agriculture, and those, in turn, have a number of sub-sections.Herbal burns - the main cause of forest fires.Dry grass quickly flared up, but the rate of spread of the fire depends on the wind.To extinguish the fire using a counter, which is under the control destroys the dead wood and leaves unchecked the fire without fuel.
Forest fires are divided into upland, grass-roots and litter.Their distribution depends on the speed and direction of wind, terrain and weather conditions.During crown fires often burn only the trees but the wind weakens, the fire can move lower, and in this case will burn every tree in its entirety.Crown fires are subject mainly coniferous forests.
Wildfires often occur due to human factor.Carelessly left or fire unquenched cigarette can cause fire to bedding.In this case combustion takes place litter or peat soil of the forest.Underground fires are dangerous because they are completely destroy the root system of trees.They spread very slowly, up to several meters per day.Burning land is often circular or oval shape.Burned trees were falling towards the center of the source of fire.Putting out this fire is complicated by the lack of visible source of the fire, as well as the ability of peat to pass water into the deeper layers of the soil, remaining dry.The burned-out areas may fall through people and technology.
Nizovoy - the most common type of forest fire.During his burning grass, litter, litter and the lower part of the tree trunks.It has a relatively high propagation speed - about 5 meters per minute.Ground fire in some areas is able to go either on the trees, or to penetrate into the ground.During the combustion of the hearth is formed a kind of "thermal column."Hot air rushes up, picking up for a coal and burning leaves, which can get into after a not yet exposed to fire area.
Wildfires - one of the major scourges of the Russian forests.Every year, they killed thousands of cubic meters of wood, destroyed entire ecological zones.Fires in Russia, with its vast forest areas cause great damage to the country.Last minute summer 2010 peat bogs in the Moscow region have tightened smoke and fumes entire capital.Every year in our country there are nearly 25,000 major forest fires that cover an area up to 2 mln. Ha.
