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A measure of the amount of fuel consumption and associated heating at and below the ground surface. It is a function of the duration of the fire, and relates closely to the amount of surface fuel, litter and duff consumption, and their moisture content.  Ground char is a qualitative measure of a fire’s heat pulse downward into the soil. It is determined by visually judging the extent of fuel consumption, charring, and changes in soil texture (Robichaud, 2000).

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