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    Author(s): Joao P. Carvalho; Bernard R. Parresol
    Date: 2005
    Source: Can. J. for. Res., Vol. 35: 93-99
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (332 KB)


    This paper presents a growth model for dominant-height and site-quality estimations for Pyrenean oak (Quercus pyrenaica Willd.) stands. The Bertalanffy–Richards function is used with the generalized algebraic difference approach to derive a dynamic site equation. This allows dominant-height and site-index estimations in a compatible way, using any desirable base age and allowing estimations to be time independent, which are important properties for site models. The database contains all possible height-growth intervals. The model is fitted considering residual autocorrelation, giving more efficient parameter estimates. Finally, the model behavior is analyzed by calculating error statistics from dominant-height and site-index estimations at different ages.

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    Carvalho, Joao P.; Parresol, Bernard R. 2005. A site model for Pyrenean oak (Quercus pyrenaica) stands using a dynamic algebraic difference equation. Can. J. for. Res., Vol. 35: 93-99

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