Abstract
This study was carried to evaluate the efficiency of the Bitterlich method in growth and yield modeling of the even-aged Eucalyptus stands. 25 plots were setup in Eucalyptus grandis cropped under a high bole system in the Central Western Region of Minas Gerais, Brazil. The sampling points were setup in the center of each plot. The data of four annual mesurements were colleted and used to adjust the three model types using the age, the site index and the basal area as independent variables. The growths models were fitted for volume and mass of trees. The efficiency of the Bitterlich method was confirmed for generating the data for growth and yield modeling.
Highlights
The choice of the growth and yield model type depends greatly on the management objectives
The permanent plots from the continuous forest inventory (PPCFI) plot size varies depending on stand
This study presents the results of a study carried out to assess the efficiency of permanent sample points for even-aged growth and yield modeling
Summary
The choice of the growth and yield model type depends greatly on the management objectives. According to Campos and Leite (2002), it is as important to define the suitable model for a particular situation to know the data characteristics necessary for its construction, as well as the sampling method and their consequences for the efficiency of the model. The main data sources for modeling are: permanent plots set up for the specific purpose of modeling, permanent plots from the continuous forest inventory (PPCFI), permanent plots set up solely to obtain data to monitor chances in the object population (specific experimental design) and partial stem analysis. The PPCFI plot size varies depending on stand. R. Árvore, Viçosa-MG, v.31, n.1, p.59-69, 2007
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