Human activity The most common direct human causes of wildfire ignition include arson, discarded cigarettes, power-lines arcs (as detected by arc mapping), and sparks from equipment.Wildfires can also be started in communities experiencing shifting cultivation, where land is cleared quickly and farmed until the soil loses fertility, and slash and burn clearing. Forested areas cleared by logging encourage the dominance of flammable grasses, and abandoned logging roads overgrown by vegetation may act as fire corridors. Annual grassland fires in southern Vietnam stem in part from the destruction of forested areas by US military herbicides, explosives, and mechanical land-clearing and -burning operations during the Vietnam War. Karki, 4. Ignition of wildland fires via contact with hot rifle-bullet fragments is also possible under the right conditions .
Human activity In middle latitudes, the most common human causes of wildfires are equipment generating sparks (chainsaws, grinders, mowers, etc.), overhead power lines, and arson. In the tropics, farmers often practice the slash-and-burn method of clearing fields during the dry season. When thousands of farmers do this simultaneously, much of a continent can appear from orbit to be one vast blaze .
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The most common direct
In middle latitudes, the most common
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wildfire ignition include arson, discarded cigarettes, power-lines arcs (as detected by arc mapping), and sparks from equipment.Wildfires can also be started in communities experiencing shifting cultivation, where land is cleared quickly and farmed until the soil loses fertility, and slash and burn clearing. Forested areas cleared by logging encourage the dominance of flammable grasses, and abandoned logging roads overgrown by vegetation may act as fire corridors. Annual grassland fires in southern Vietnam stem in part from the destruction of forested areas by US military herbicides, explosives, and mechanical land-clearing and -burning operations during the Vietnam War. Karki, 4. Ignition of wildland fires via contact with hot rifle-bullet fragments is also possible under the right conditions
wildfires are equipment generating sparks (chainsaws, grinders, mowers, etc.), overhead power lines, and arson. In the tropics, farmers often practice the slash-and-burn method of clearing fields during the dry season. When thousands of farmers do this simultaneously, much of a continent can appear from orbit to be one vast blaze