Journal article
Small-tree volume equations for subtropical hardwood plantation species
Australian Forestry, Vol.84(3), pp.152-158
2021
Abstract
Estimation of stem volume is needed to determine timber yield and forest carbon, but equations to estimate volume from easily assessed inventory measures are lacking for hardwood plantation species in the subtropics. We assessed the merits of three volume equations that combine measurements of tree diameter at breast height (DBH) and total tree height for five hardwood plantation taxa (Corymbia citriodora subsp. variegata, Corymbia hybrids, Eucalyptus cloeziana, E. longirostrata and E. dunnii). Goodness-of-fit statistics indicated that model 1 (comprehensive combined variable equation) and model 2 (the Schumacher and Hall equation) fitted the data well (e.g. adjusted R2 > 98). Analysis of bias in different diameter classes indicated that these models did not show any systematic bias patterns with tree size. Model 3 (combined variable volume equation) is the least desirable as it showed evidence of overestimation of volume for larger trees in some taxa. Models 1 and 2 provide a useful initial set of volume equations for five potentially important hardwood plantation species in subtropical Queensland. These equations are based on stems with a DBH range of 5−30 cm and hence there is a need to collect data for larger stems (>30 cm DBH) as existing plantations mature.
Details
- Title
- Small-tree volume equations for subtropical hardwood plantation species
- Authors
- B. W Hogg (Author) - Department of Agriculture and FisheriesT Lewis (Author) - Department of Agriculture and FisheriesJ. R Huth (Author) - Forestry and Biosciences RD&ED. J Lee (Author) - University of the Sunshine Coast, Queensland, Tropical Forests & People Research Centre
- Publication details
- Australian Forestry, Vol.84(3), pp.152-158
- Publisher
- Taylor & Francis Australasia
- DOI
- 10.1080/00049158.2021.1961417
- ISSN
- 2325-6087
- Organisation Unit
- Forest Research Institute; University of the Sunshine Coast, Queensland; Tropical Forests & People Research Centre; Forest Industries Research Centre
- Language
- English
- Record Identifier
- 99583608702621
- Output Type
- Journal article
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