Diameter distribution in a Brazilian tropical dry forest domain: predictions for the stand and species
An. acad. bras. ciênc
;
89(2): 1189-1203, Apr.-June 2017. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-886706
ABSTRACT
ABSTRACT Currently, there is a lack of studies on the correct utilization of continuous distributions for dry tropical forests. Therefore, this work aims to investigate the diameter structure of a brazilian tropical dry forest and to select suitable continuous distributions by means of statistic tools for the stand and the main species. Two subsets were randomly selected from 40 plots. Diameter at base height was obtained. The following functions were tested log-normal; gamma; Weibull 2P and Burr. The best fits were selected by Akaike's information validation criterion. Overall, the diameter distribution of the dry tropical forest was better described by negative exponential curves and positive skewness. The forest studied showed diameter distributions with decreasing probability for larger trees. This behavior was observed for both the main species and the stand. The generalization of the function fitted for the main species show that the development of individual models is needed. The Burr function showed good flexibility to describe the diameter structure of the stand and the behavior of Mimosa ophthalmocentra and Bauhinia cheilantha species. For Poincianella bracteosa, Aspidosperma pyrifolium and Myracrodum urundeuva better fitting was obtained with the log-normal function.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Árvores
/
Clima Tropical
/
Florestas
/
Dispersão Vegetal
Tipo de estudo:
Estudo prognóstico
/
Fatores de risco
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
An. acad. bras. ciênc
Assunto da revista:
Ciência
Ano de publicação:
2017
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Universidade do Estado do Amapá/BR
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