Title: Estimating Fuel Bed Loadings in Masticated Areas
Author: Hood, Sharon; Wu, Ros;
Source: In: Andrews, Patricia L.; Butler, Bret W., comps. 2006. Fuels Management-How to Measure Success: Conference Proceedings. 28-30 March 2006; Portland, OR. Proceedings RMRS-P-41. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 333-340
Publication Series: Proceedings (P)
Description: Masticated fuel treatments that chop small trees, shrubs, and dead woody material into smaller pieces to reduce fuel bed depth are used increasingly as a mechanical means to treat fuels. Fuel loading information is important to monitor changes in fuels. The commonly used planar intercept method however, may not correctly estimate fuel loadings because masticated fuels violate the assumption that fuel particles are round. A sampling method was developed for estimating masticated fuel bed loadings using percent cover, average depth, and bulk density in three vegetation types: Jeffrey pine-white fir, ponderosa pine-Gambel oak, and pinyon-juniper. Masticated material, duff, and litter samples were collected to determine bulk densities. Loadings were calculated as the product of bulk density and depth. Total fuel median bulk densities equaled 129 (Jeffrey pine-white fir), 128 (ponderosa pine-Gambel oak), and 226 kg/m3 (pinyon-juniper). Correlations between loading and depth were best for the Jeffrey pine-white fir type. Bulk density was most variable in pinyon-juniper. Woody material loadings calculated from the cover-depth method were generally lower than the loadings calculated from the planar intercept method, while duff and litter loadings from the cover-depth method were higher than the loadings calculated from the vertical profile measurements on the planar-intercept transect.
Keywords: fire, fire ecology, fuels management, masticated fuel treatments, fuel loading information, planar intercept method
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Hood, Sharon; Wu, Ros 2006. Estimating Fuel Bed Loadings in Masticated Areas. In: Andrews, Patricia L.; Butler, Bret W., comps. 2006. Fuels Management-How to Measure Success: Conference Proceedings. 28-30 March 2006; Portland, OR. Proceedings RMRS-P-41. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 333-340
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