Data/hora: 03/06/2024 18:26:48

Biblioteca(s): | Embrapa Florestas.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 08/06/2022
Data da última atualização: | 08/06/2022
Autoria: | MATTOS, P. P. de; CURTO, R. de A.; BRAZ, E. M.; NETTO, S. P.
Afiliação: | PATRICIA POVOA DE MATTOS, CNPF; RAFAELLA DE ANGELI CURTO, Federal Rural University of Rio de Janeiro; EVALDO MUNOZ BRAZ, CNPF; SYLVIO PÉLLICO NETTO, Federal University of Paraná.
Título: | How do Araucaria angustifolia trees grow in overstocked stands?
Ano de publicação: | 2022
Fonte/Imprenta: | Dendrochronologia, v. 74, 125976, 2022.
Páginas: | 12 p.
DOI: | https://doi.org/10.1016/j.dendro.2022.125976
Idioma: | Português
Conteúdo: | ABSTRACT. The objective of this study was to evaluate growth along the stem of Araucaria angustifolia (Bertol.) Kuntze trees competing in overstocked stands, in order to identify periods when growth and trunk shape are differentiated during the trees' lifespan. The research was carried out in a planted forest of Araucaria angustifolia established in 1946 in the Açungui National Forest in Campo Largo, Paraná, Brazil, when these trees were 65 years old. One thinning was recorded, at some time between 1970 and 1980. Forty-six trees were selected and divided into three development classes (DC) at 65 years of age; these classes considered diameter at 1.30 m (breast height, dbh) with a range of 20 cm (from 10 cm to 70 cm). In addition to dbh, total tree height, and crown height and diameter were measured in the field. From each tree, 14 disks were removed to analyze growth rings and confirm the age of the stand. Some trees in the smallest DC (10 &#8804; dbh < 30 cm) were the product of natural regeneration (younger trees that grew after the initial planting). In 63% of the trees, at least one growth ring was missing at breast height. Missing rings at breast height were more common in trees with smaller dbh and crown diameters. The need for more growing space was observed at different periods during the studied lifespan of the trees from three DCs. It resulted in changes in stems shape from conical to cylindrical. Different growth patterns could be observed during the lives of some trees as they outgrew their competition.
Palavras-Chave: | Anel de crescimento; Competição; Competition; Haste; Missing ring; Stem analysis; Thinning effect.
Thesagro: | Araucária Angustifólia.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (58286-1) - UPC - AP - DD -  -  -  - DIS