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Diameter distribution in a Brazilian tropical dry forest domain: predictions for the stand and species
LIMA, ROBSON B DE; BUFALINO, LINA; ALVES JUNIOR, FRANCISCO T; SILVA, JOSÉ A A DA; FERREIRA, RINALDO L C.
  • LIMA, ROBSON B DE; Universidade do Estado do Amapá. Laboratório de Manejo Florestal. Macapá. BR
  • BUFALINO, LINA; Universidade do Estado do Amapá. Laboratório de Manejo Florestal. Macapá. BR
  • ALVES JUNIOR, FRANCISCO T; Universidade do Estado do Amapá. Laboratório de Manejo Florestal. Macapá. BR
  • SILVA, JOSÉ A A DA; Universidade do Estado do Amapá. Laboratório de Manejo Florestal. Macapá. BR
  • FERREIRA, RINALDO L C; Universidade do Estado do Amapá. Laboratório de Manejo Florestal. Macapá. BR
An. acad. bras. ciênc ; 89(2): 1189-1203, Apr.-June 2017. tab, graf
Article in English | 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.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Trees / Tropical Climate / Forests / Plant Dispersal Type of study: Prognostic study / Risk factors Country/Region as subject: South America / Brazil Language: English Journal: An. acad. bras. ciênc Journal subject: Science Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade do Estado do Amapá/BR

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Full text: Available Index: LILACS (Americas) Main subject: Trees / Tropical Climate / Forests / Plant Dispersal Type of study: Prognostic study / Risk factors Country/Region as subject: South America / Brazil Language: English Journal: An. acad. bras. ciênc Journal subject: Science Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade do Estado do Amapá/BR