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Fuel ladder
A fuel ladder is a firefighting term for live or dead vegetation that allows a fire to climb up from the landscape or forest floor into the tree canopy. Common fuel ladders include tall grasses, shrubs, and tree branches, both living and dead. It is also part of Defensible Space 'Firescaping' practices.
==Fire precautions==
Potential fuel ladders should be removed to reduce the risk of fire bridging the gap to the canopy. To remove the ladder requires pruning any low limbs up to a minimum of 8 feet, and potentially as high as 15 feet. The required height depends on how low the branch tips hang, the steepness of slope, and the height and spacing of other nearby vegetation.
The desired result is to create a situation in which a low-burning fire could burn to the trunk of a tree, which is protected by its bark, without having thinner, more flammable branches, leaves or needles within easy reach of the fire.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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