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- Title
Applying wavelet-based functional approach in modelling tree taper.
- Authors
Subedi, Nirmal; Sharma, Mahadev
- Abstract
• Introduction: The wavelet-based functional approach was evaluated for modelling tree taper of jack pine ( Pinus banksiana Lamb.) trees grown in the Canadian boreal forest region. • Objectives: Wavelet-based functional fixed and mixed-effects models were developed to predict tree taper, and these models were evaluated for their predictive accuracy using calibration and evaluation data sets. • Results and discussion: Diameters predicted using both fixed and mixed-effects taper models were unbiased for calibration data set as the 95% credible limits included 0 at all locations along the boles. The diameters predicted by these models for validation data set, however, were unbiased only at four out of 11 locations as the 95% credible limits of mean bias using fixed effects model did not include 0 at other locations. • Conclusion: The study concludes that the wavelet-based taper models are able to describe the taper of the trees used in fitting the model but are unable to capture the mean taper function of the trees not used in fitting the model.
- Subjects
JACK pine; ACCURACY; CALIBRATION; EVALUATION; TREES
- Publication
Annals of Forest Science (BioMed Central), 2011, Vol 68, Issue 5, p1039
- ISSN
1286-4560
- Publication type
Article
- DOI
10.1007/s13595-011-0113-z