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Accession Number PB2013-111012
Title Biomass Determination Using Wood Specific Gravity from Increment Cores.
Publication Date Jul 2013
Media Count 9p
Personal Author G. B. Williamson M. C. Wiemann
Abstract Wood specific gravity (SG) is one of the most important variables used to determine biomass. Measurement of SG is problematic because it requires tedious, and often difficult, sampling of wood from standing trees. Sampling is complicated because the SG usually varies nonrandomly within trees, resulting in systematic errors. Off-center pith and hollow or decayed stems pose further problems in biomass estimation. When the pattern of variation within a tree is known, as it often is for a given species, the sampling procedure can be greatly simplified by sampling wood that approximates a mean value for the tree. Even when a pattern is not known, a representative approximation can produce reasonable estimates of SG. If whole above-ground woody biomass is required, corrections may be necessary to account for differences with height or in branches.
Keywords Biomass
Forest management
Increment cores
Radiation variations
Species diversity
Specific gravity

Source Agency Forest Products Laboratory
NTIS Subject Category 48D - Forestry
71R - Wood & Paper Products
97K - Fuels
Corporate Author Forest Products Lab., Madison, WI.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1324
Contract Number N/A

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