SEX PROPORTION AND DIAMETRIC DISTRIBUTION OF MALE AND FEMALE OF Araucaria angustifolia (Bertol.) Kuntze TREES IN IMPLANTED STANDS
| Autor: | Magda Lea Bolzan Zanon, César Augusto Guimarães Finger, Paulo Renato Schneider |
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| Jazyk: | portugalština |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Ciência Florestal, Vol 19, Iss 4, Pp 425-431 (2010) |
| Druh dokumentu: | article |
| ISSN: | 0103-9954 1980-5098 19805098 |
| DOI: | 10.5902/19805098897 |
| Popis: | The study, conducted at São Francisco National Forest, in Rio Grande do Sul, had as objectives to quantify the number of female and male Araucaria angustifolia individuals, as well as to study the diametric distribution in a 25.11 ha of a 60 years old forest. The sex classification was done in the periods of floral components maturation, and the dendrometric survey was done in order to obtain the diameter and the frequency upon the total sampling area. There was no significative difference in average diameter, being 42 cm for female individuals and 38.5 cm for male individuals. The relative proportion of female individuals was of 43.65 % and 56.35 % for male individuals; 65.3 % of the trees were concentrated between the diametric classes of 35-45 cm. The diametric distribution followed the normal distribution, having a higher presence of female individuals in higher diametric classes and higher amounts of male individuals in lower classes. |
| Databáze: | Directory of Open Access Journals |
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