What are wildfires

Wildfires – this is one of the most dangerous natural disasters on the planet. At the time they killed a huge number of living beings. Often perish in the flames entire villages or village. Wildfires are harshly classification. For each type of combustion and the spread has its own terms and concepts. This serves to facilitate the determination of the task of tackling the fire. To struggle with the elements are utilized not only ground forces but also special fire-fighting helicopters and planes. Often fire fighting volunteers are encouraged, and soldiers of the County.

Wildfires are forest and agriculture, and those, in turn, have a number of subsections. The grass burns – the main cause of fires in the forest. The dry grass erupted quickly, but the speed of spread of such a fire depends on the wind. To extinguish use a counter-fire which is under the control of the destroy dead wood and leaves out of control fire without fuel.

Forest fires are divided into upper, lower and litter. Their distribution depends on the speed and direction of wind, terrain and weather conditions. During crown fires often burn only the crowns of the trees, but with the weakening of the wind the fire can move below and in this case, it will burn every tree in its entirety. Upland fires affected mainly pine forests.

Wildfires often occur due to human factor. Carelessly left a campfire or cigarette butts can cause litter fire. In this case, the combustion of the litter or peat soil layer of the forest. Underground fires are dangerous because they completely destroy the root system of trees. They are very slow to spread, up to several meters per day. The burning area is often round or oval in shape. Burned trees fall down to the center of the fire. Extinguishing such a fire is complicated by the lack of visible fire source, as well as the ability of peat to absorb water in the deeper layers of soil remaining dry. In the burnt region can fail people technique.

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Grassroots – the most common type of forest fire. During the burning grass, litter, litter and the lower part of tree trunks. It has a fairly high propagation speed – about 5 meters per minute. Ground fire in some areas can go either on the trees or to penetrate into the ground. During combustion over the hearth formed a kind of ‘thermal column». Hot air rushes up, picking up the embers and burning leaves, which after you can get into even are not exposed to the fire area.

Wildfires – one of the main pests of Russian forests. Every year they kill thousands of cubic meters of wood, destroying entire ecological zones. The fires in Russia, with its vast forest areas, cause extensive damage. Burning summer of 2010, the peat bogs in the Moscow region was covered with smoke and burning the whole capital. Every year in our country there are nearly 25 000 large forest fires that cover an area of up to 2 million hectares.