SciELO - Scientific Electronic Library Online

 
vol.17 número2Uso potencial de los lodos urbanos en la producción agrícolaEvaluación de cuatro variedades de higuerillo (Ricinus communis L.) para la producción y rendimiento de aceite en Colombia índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Links relacionados

Compartir


Agrociencia (Uruguay)

versión impresa ISSN 1510-0839versión On-line ISSN 2301-1548

Resumen

MORAS, Guillermo  y  VALLEJOS-BARRA, Oscar Santiago. Tables of Volume for Individual Trees in Eucalyptus globulus ssp. globulus in Southern Uruguay. Agrociencia Uruguay [online]. 2013, vol.17, n.2, pp.11-24. ISSN 1510-0839.

We developed individual tables for total and commercial volume for Eucalyptus globulus ssp. globulus in commercial plantations located in southern Uruguay, in 13 farms between six and 11 years old, with a density between 1111 and 1667 trees per hectare. to 266 randomly selected trees using a parallel-arm calliper . We felled the trees and recorded height with a tape. We measured the diameter every meter long and calculated the volume with the formula of Smalian; we obtained the tree volume by adding the volumes of the sections. We determined the variables better correlated with the total and commercial volumes, and used these variables to build mathematical models. We selected these models based on the highest adjusted R2 and the lowest MSE (Mean Square Error of Prediction). We determined the total volume with bark [ Ln (Total volume ) = -9.75 + 0.93 * Ln ( DAP2 * h total) + e] with adjusted R2 of 0.98 and 0.02 MSE. We estimated the commercial volume with bark by [ Ln (commercial volume) = -8.22 + 0.77 * Ln (DAP2 * commercial h) + e] with adjusted R2 of 0.95 and 0.06 MSE. For each of the farms we selected the local functions with greater significance for both the total and the commercial volume.

Palabras clave : FORESTRY MODELS; FUNCTIONS OF VOLUME; EUCALYPTUS; EUCALYPTUS GLOBULUS.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons