Skip to Main Content
Predicting duff consumption from prescribed burns on conifer clearcuts in western Oregon and western Washington.Author(s): Susan N. Little; Roger D. Ottmar; Janet L. Ohmann
Source: Res. Pap. PNW-RP-362. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 29 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
Download Publication (1.09 MB)
DescriptionDuff consumption by fire was studied on 15 cable-yarded clearcut units in western Oregon and western Washington. Equations are presented that predict duff consumption (in depth reduction and weight loss) from loading, consumption, and moisture of large fuels, and days since significant precipitation. When more than 25 days elapsed since 1.3 cm rainfall, the effect of large fuel loading on duff consumption diminished. Duff consumption was dependent on the diameter reduction of large fuels when there had been no rain for at least 25 days. The results indicated that duff consumption can be reduced by removing large fuel before the burn, scheduling the burn under moist conditions, or both. Methods are demonstrated to prescribe the proper level of fuel removal and moisture regime at time of burn to achieve a given level of duff consumption.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationLittle, Susan N.; Ottmar, Roger D.; Ohmann, Janet L. 1986. Predicting duff consumption from prescribed burns on conifer clearcuts in western Oregon and western Washington. Res. Pap. PNW-RP-362. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 29 p
KeywordsDuff consumption, duff reduction, fire effects, prescribed burning, duff moisture, mineral soils, clearcuts
- Duff mound consumption and cambium injury for centuries-old western larch from prescribed burning in western Montana
- Short-term effects of prescribed fire in grand fir-white pine-western hemlock slash fuels
- Predicting duff and woody fuel consumed by prescribed fire in the Northern Rocky Mountains
XML: View XML