Modeling the individual height and volume of two integrated crop-livestock-forest systems of Eucalyptus spp. in the Brazilian Savannah

Acta Scientiarum: Agronomy

André Dominghetti Ferreira¹  Roberto Giolo de Almeida²  Josmar Mazucheli³  Karen Keli Barbosa Abrantes³  Luísa Melville Paiva⁴  Edilson Urbano⁴ 

[1] Centro Nacional de Pesquisa de Gado de Corte / Universidade Uniderp Anhanguera;Centro Nacional de Pesquisa de Gado de Corte;Universidade Estadual de Maringá;Universidade Estadual de Mato Grosso do Sul;

关键词: nonlinear growth models;    volumetric equations;    hypsometric equations;    agroforestry systems.;   

DOI  :  10.4025/actasciagron.v41i1.42626

来源: DOAJ

【 摘 要 】

The aim of this study was to model the individual height and volume of eucalyptus wood in two integrated crop-livestock-forest systems (ICLF1 and ICLF2) in Campo Grande, a city in the state of Mato Grosso do Sul, Brazil. Classic nonlinear growth models were adjusted for height (Logistic, Gompertz, Richards, Weibull, Van Bertalanffy, Brody, Mitscherlich, and Chapman and Richards) and volume (Shumacher-hall nonlinear, Takata, Honner, Logistic, Gompertz, and Weibull) in two structural arrangements: ICLF1, with a spacing of 14 x 2 m and density of 357 trees ha-1, and ICLF2, with a spacing of 22 x 2 m and density of 227 trees ha-1. Diameter at Breast Height (DBH) measurements were performed in 100% of trees, with measurements of the total height of some individuals and a rigorous scaling procedure in diameter classes. According to the calculated value of Student's t-test, there was no significant evidence that DBH and the average height of the trees were different between ICLF1 and ICLF2. Based on the Akaike information criterion (AIC), the corrected Akaike information criterion (AICC) and the Bayesian information criterion (BIC), the Richards model was selected to estimate heights and the Takata model was selected to estimate the volume.

【 授权许可】

Unknown