Fuelbed Changes with Aging of Slash from Ponderosa Pine Thinnings
Abstract:Fuel loading stratified by standard fuel size classes and fuelbed depth data from 11 precommercially thinned stands of ponderosa pine (Pinus ponderosa Dougl. ex Laws) indicated that changes in slash fuelbeds varying in age from 0 to 17 years can be described mathematically as a function of slash age and basal area of trees removed. Least-squares equation of the form
In(fuelbed characteristic) =
a + b·In(basal area removed) + c·(age)
gave R² values from 0.74 to 0.96, and all equations were significant at the 99-percent level. Prescribed burning produced changes in loading and bed depth that were the equivalent of 2 to 20 or more years of natural aging. These results should be of use to land managers, but since they are from one drainage of the eastern side of the Cascade Range in Washington they may need adjusting before being applied to other areas.
Document Type: Journal Article
Affiliations: Associate Professor of Forestry at the University of Washington, Seattle
Publication date: February 1, 1982
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