Surface fires burn only surface litter and duff. These are the easiest fires to put out and cause the least damage to the forest. Ground fires (sometimes called underground or subsurface fires) occur in deep accumulations of humus, peat and similar dead vegetation that become dry enough to burn.
What does surface fire mean?
: a forest fire that burns only surface litter and undergrowth.
What is the difference between surface and ground fires?
Ground fires burn the matted and decomposed organic material that forms the O2 layer. Surface fires burn the surface litter (O1 layer), other loose debris, and small vegetation. Crown fires burn through the living foliage and branches of trees and shrubs independently or coupled to a surface fire.
What is an understory fire?
3) The first 2 volumes of the Wildland Fire in Ecosystems series use understory fire to describe fires in forests and woodlands that have minimal effects on the overstory, and they contrast understory fire with stand-replacement fire.
What is the difference between crown fire and surface fire?
Surface fires—spread with a flaming front and burn leaf litter, fallen branches, and other fuels located at ground level. Crown fires—burn through the top layer of foliage on a tree, known as the canopy.