THE DEVELOPMENT OF A LINEAR MIXED-EFFECT MODEL TO ESTIMATE GROWTH AND YIELD OF CLONAL Eucalyptus STANDS

Main Article Content

Natalino Calegario
Richard F. Daniels
Romualdo Maestri
Rodolfo Neiva

Abstract

The main purpose of this study was to develop a linear mixed-effects model to estimate the basal area growth and yield, for clonal Eucalytus stands. After modeling the variance among sample plots and clones, it was verified a significant improvement of the statistic information parameters (AIC and BIC) and the likelihood logarithm value. Also, after modeling both heteroscedasticity and autocorrelation, such statistic criteria had a significant improvement. Thus, the modeling process improved significantly the estimated parameters in the linear model.   

Article Details

Section
Article