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Bosque (Valdivia)

versión On-line ISSN 0717-9200

Resumen

TRINCADO, Guillermo  y  LEAL D, Cristián. Local and generalized height-diameter equations for radiata pine (Pinus radiata) . Bosque (Valdivia) [online]. 2006, vol.27, n.1, pp.23-34. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002006000100003.

In this study, two different approaches for modeling the height-diameter relationship were analyzed. Data were obtained from 3,492 sample plots established in 105 operational pre-harvest inventories in the province of Arauco, VIII Region. Measures of precision and bias permitted to evaluate and compare equations within and between modeling approaches. Moreover, a comparative analysis to determine the effect of total tree height prediction in stand volume and multi-product calculation was also investigated. The 2-parameter local equations were more precise and stable in terms of convergence than 3-parameter equations. Measures of precision and bias showed that generalized equations performed better than local equations. Paired t tests (α = 0.05) detected significant differences in total and merchantable volume estimates when applying a local or generalized equation. Contrarily, two of the three log products showed no significant difference.

Palabras clave : height-diameter relationship; total height; radiata pine.

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