Logging Slash Fuel Models

Logging slash includes the residual material after timber harvesting or silviculture operations like thinning, pruning, or removing competitive understory plants. This debris includes branches, bark, logs, and understory shrubs or trees. Large diameter logs and branches have low surface area to volume ratios, do not readily ignite, and fires move through them relatively slowly unless there is also an accumulation of fine fuels such as needles and small branches. Although large (heavy) fuels ignite slowly, once they are burning they are difficult to extinquish and can release large amounts of heat.

Slash fuel models make up FPBS models 11-13.