Abstract

FLORES MORALES, Edgar Alan et al. Compatible taper-volume system for Pinus pseudostrobus Lindl. in the Corona del Rosal ejido, Nuevo León, Mexico. Madera bosques [online]. 2021, vol.27, n.2, e2722130.  Epub Apr 04, 2022. ISSN 2448-7597.  https://doi.org/10.21829/myb.2021.2722130.

One of the most important activities in the management of forest resources is the extraction of wood, this being the most important variable due to its economic value. The objective of the work was to adjust taper-volume models for Pinus pseudostrobus Lindl. in the Corona del Rosal ejido in southern Nuevo León, Mexico. 968 pairs of data from 82 trees, coming from non-destructive measurement methods, were employed using the Criterion RD1000® dendrometer. Fang's segmented model turned out to be the most accurate for the species studied, obtaining an adjusted coefficient of determination of 0.98 for the diameter at different sections on the stem and 0.97 for the commercial volume; in the root mean square error and coefficient of variation statistics, the system surpassed the Max and Burkhart and Parresol models. The dendrometric shape from neiloid to paraboloid presented similar inflection points between 6% and 9%, while the change from paraboloid to cone occurs between 88% and 91% of the total height. The models were corrected for autocorrelation and heteroscedasticity to decrease the standard error of the parameters. The results continued to be favorable for the Fang system to predict diameters at any height and volume at any diameter, which constitutes a support for decision-making in the development of forestry activities.

Keywords : autocorrelation; adjusted coefficient of determination; coefficient of variation; Criterion RD1000®; heterocedasticity; average bias.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )