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
Article
Dans Anglais
| 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.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Arbres
/
Climat tropical
/
Forêts
/
Dispersion des plantes
Type d'étude:
Étude pronostique
/
Facteurs de risque
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
An. acad. bras. ciênc
Thème du journal:
Science
Année:
2017
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Universidade do Estado do Amapá/BR
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