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Research Journal of Forestry
  Year: 2012 | Volume: 6 | Issue: 2 | Page No.: 32-40
DOI: 10.3923/rjf.2012.32.40
 
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Estimates of the Bark Thickness in Bole Profiles of Oak in Northern Mexico
M. Pompa-Garcia, J. Vega-Munoz, R. Soto-Gutierrez, G. Trincado and F. Cruz-Cobos

Abstract:
The accurate estimate of the oak bark has economic and ecological implications. Operationally simple techniques are required without reducing its statistical reliability. The aim of this study was to estimate the total bark volume and thickness at different sections of the bole of the genus Quercus in forests of Northern Mexico through allometric relationships of diameter and partial heights. A sample of 206 trees with 1064 data pairs was collected and fitted to 5 models empirically proposed. The goodness of fit was examined from the comparison of the fitted coefficient of determination, bias and root mean square error. Statistical techniques were included to verify and correct the heteroscedasticity and autocorrelation problems associated with regression procedures. The results showed that to estimate the total volume of bark and its thickness, diameter and height are the most important explanatory variables (R2adj≥0.81) and generate a good relationship between simplicity and approximation. It is also advisable to apply the proposed equation, due to the complexity that represents the direct measurement of the bark at different heights to 1.3 m.
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How to cite this article:

M. Pompa-Garcia, J. Vega-Munoz, R. Soto-Gutierrez, G. Trincado and F. Cruz-Cobos, 2012. Estimates of the Bark Thickness in Bole Profiles of Oak in Northern Mexico. Research Journal of Forestry, 6: 32-40.

DOI: 10.3923/rjf.2012.32.40

URL: https://scialert.net/abstract/?doi=rjf.2012.32.40

 
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