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Revista Chapingo. Serie ciencias forestales y del ambiente

versão impressa ISSN 0186-3231


REYES-MUNOZ, José Luis et al. Models to predict the volume increment for mixed forests in Durango, Mexico. Rev. Chapingo [online]. 2011, vol.17, n.1, pp. 103-113. ISSN 0186-3231.

Thirty models were evaluated to predict timber volume growth and yield in 28 Permanent Plots (SPIS), in the Ejido Pueblo Nuevo, Durango, Mexico. The predominant plant association is mixed stands of Pinus and Pinus Quercus, along with the vegetation associated with these forests. The models in logarithmic form incorporate 10 competition indices (IC) independent of distance, 3 density indices (ID), age (t) and canopy height (H) at the average level of the stand. The mathematical models indirectly relate the effect of competition and density on tree growth and yield. According to the variance analyses and the test hypothesis, the best IC incorporated in a mathematical model for the volume increment prediction was the basal area density competition index (IABN), the diameter quadratic density competition index (IDCN), the basal area total density competition index (IABTN) and the maximum total height competition index (IHMAX). The best models presented average values of R2 = 0.99 and a highly significant level of accuracy (Pr>|t| = 0.0001).

Palavras-chave : volume growth; competition index; density index; distance independent index; stand.

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