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Ciência Florestal

versão impressa ISSN 0103-9954versão On-line ISSN 1980-5098

Resumo

CISNEROS, Ana Belén; MOGLIA, Juana Graciela  e  ALVAREZ, Juan Agustín. Morphometry of crown in Prosopis alba Griseb. Ciênc. Florest. [online]. 2019, vol.29, n.2, pp.863-884.  Epub 30-Set-2019. ISSN 0103-9954.  https://doi.org/10.5902/1980509826846.

The morphometric relations allow describing and characterizing the dimensions of trees, stands without prior knowledge of the age and have utility in silvicultural management, forest monitoring and productivity, especially when there is a premise of making a sustainable use of forests. The objectives of the present study were to determine the morphometric indices according to their social positions (PS), correlate them, and create predictive models of these indices, because the dimensions and architecture of the crown may vary according to the PS. The data collection was carried out in three provinces of the Chaqueña Region, Argentina. In 100 individuals with DBH> 15 cm were measured: total height (Ht), diameter at breast height (DAP), crown length (Hc), crown radius (Rc), through which it was calculated the crown diameter (Dc), crown volume (Vc), slenderness rate (E), range index (Ia), crown section (Gc), salience index (IS), crown percentage (%c) and crown formal (Fc). The variables were subjected to the Pearson correlation analysis. The results indicate that there are positive correlations between % C, Ht, Hc, Dc and DAP, while E and Is showed negative correlations with DAP. The morphometric relationships of Prosopis alba can be accurately estimated using regression models. The results indicate that morphometric features can be described using a unique model, with the use of dummy classification variables that differentiate the sociological positions in individuals of Prosopis alba.

Palavras-chave : Morphometry; Crown characteristics; Forest management.

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