Angelo Augusto Ebling

Acuracidade da distribuição diamétrica entre métodos de projeção em Floresta Ombrófila Mista

This study aims to evaluate accuracy of projections in diametric Araucaria Forest, using models of the transition matrix and movement ratio, applied in three temporal amplitude (2, 3 and 4 years), and two employees amplitudes diameter classes (5 and 10cm). The information used in the study are from permanent plots established in the National Forest of Sao Francisco de Paula - RS. The efficiency of the projections was verified based on observed values, using Kolmogorov Smirnov test and analysis of variance. Although they have been influenced by the Markovian properties, projections carried out showed efficiency to describe the future structure of the forest, but the model the movement ratio projections generated more efficient compared to those described by the transition matrix. The time span of 4 years applied the range of 5cm diameter class had the most accurate results of the study overestimated by 1.7% the total number of individuals in the forest.

Prognose da Estrutura Diamétrica em Floresta Ombrófila Mista

This study aimed to evaluate the accuracy of diameter projections, using the transition matrix and movement ratio models in different temporal amplitudes and diameter class intervals, for a Mixed Ombrophyilous Forest fragment located in the municipality of Sao Joao do Triunfo, Parana state. The data were collected from a continuous inventory that has been carried out in a 3.5 ha sampling area since 1995. The data collected between 2000 and 2005 were divided into classes of 5 cm and 10 cm and grouped into four temporal sampling amplitudes, with projections conducted for 2004, 2006, 2008 and 2010, respectively. Efficiency of projection values was verified based on the Friedman and Kolmogorov-Smirnov test. The results indicate that the two tested models reliably estimate the number of trees of this forest fragment only for the temporal amplitude of 2 years.