EFEITO DE IDADE E SÍTIO NO AJUSTE DE FUNÇÕES PROBABILÍSTICAS PARA ALTURA DE Mimosa scabrella.

de Souza, Ronan Felipe; Mendes Nascimento, Rodrigo Geroni; Péllico Netto, Sylvio; do Amaral Machado, Sebastião

This study aimed to evaluate the effect of site and age on the height distribution in native stands of "bracatinga" (Mimosa scabrella Benth) on the Metropolitan Region of Curitiba, PR, Brazil, as well as to select a Probability Density Function (pdf), between six, that represents the histogram of the variable height of these stands. It was used height data from 88 plots with variable area from 100 to 400 m², classified into three site classes. The ages 5, 8, 9 and 13 years were selected for fitting probability density functions by each site. The adjustment of the models was performed using the Solver application of Microsoft Excel 2007, by the least squares method. The pdfs tested were Beta, Gamma, Log Normal, Normal, Weibull and Sb Johnson, being selected the best by Kolmogorov-Smirnov test, Schlaegel Index and Percentage Standard Error of Estimate. The site and age affect the amplitude, shape and dynamics of the height distribution, with the site related to the kutosis and age to skewness of the distribution. The pdf that best described height distribution of the native stands of "bracatinga" was Beta function, followed by Sb Johnson and Normal.

Floresta, 2013, Vol 43, Issue 2, p271

0015-3826

Academic Journal

10.5380/rf.v43i2.25290