Consulta: subjectFacets:"Site quality"
Registros recuperados: 3
Data/hora: 02/06/2024 18:26:45

Influencia de los aclareos sobre la densidad básica y ancho de anillo de la madera de Pinus patula Schi. Et Cham
Provedor de dados: 32
Autores: Goche Télles, José Rodolfo.
Se evalúo el efecto de los aclareos sobre la densidad básica y ancho de anillos  de la madera de Pinus patula, proveniente de un bosque natural con dos  calidades de estación, y de una plantación forestal. Para tal efecto se colectaron  cilindros de madera a una altura de 1.30 m sobre el fuste. En cada muestra se  determinó el ancho de los anillos de crecimiento y la densidad básica. Los  resultados sobre densidad básica mostraron que la calidad de estación y el  aclareo en el bosque natural no influyeron significativamente sobre el  parámetro, presentando valores de 0.45 y 0.44 g cm-3 para una calidad de  estación alta, antes y después del aclareo respectivamente; por otro lado, en  condiciones de calidad de estación baja los valores fueron 0.47 y 0.44...
Tipo: Tesis
Palavras-chave: Aclareos; Anillos de crecimiento; Calidad de estación; Densidad básica; Madera tardía; Doctorado; Forestal; Thinning; Growing rings; Site quality; Absolute wood density; Late wood.
Ano: 2007
URL: http://hdl.handle.net/10521/1441

Japanese red cedar as an alternative species for wood production in the State of Paraná
Provedor de dados: 190
Autores: Shimizu, Jarbas Yukio; Maiochi, Riceli Antunes.
Japanese red cedar (Cryptomeria japonica (L. F.) D. Don.) is an important alternative tree species forwood production in the State of Paraná. This study reports on the performance of this species from different geographic origins in comparison to a previously introduced population of unknown origin. The test plantations were established in three locations in the State of Paraná. The sites differed in soil types as well as in mean annual rainfall. Provenance performances varied in frost tolerance and in growth traits. Among planting sites, Cantagalo was the most productive due to better soil quality than in other sites. Also, the mean annual rainfall at Cantagalo site is higher (1,831 mm) than in Rio Negro and Colombo (1,420 mm and 1,407 mm, respectively)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryptomeria japonica; Origins; Site quality; Productivity. Cryptomeria japonica; Origens; Qualidade de sítio; Produtividade.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/128

A dominant height growth and site index model for Pinus pseudostrobus Lindl. in northeastern Mexico
Provedor de dados: 115
Autores: Vargas-Larreta,Benedicto; Aguirre-Calderón,Oscar A.; Corral-Rivas,José J.; Crecente-Campo,Felipe; Diéguez-Aranda,Ulises.
Foresters in northeastern Mexico currently use height growth curves developed 20 years ago to estimate the dominant height and productivity of Pinus pseudostrobus Lindl. The development of new curves could improve the ability to predict heights and would allow increasingly precise yield projections for this species. Data from stem analysis of 72 P. pseudostrobus dominant trees growing in natural stands in Nuevo Leon, Tamaulipas and Coahuila (northeastern Mexico), were used to evaluate several dynamic site equations derived with the Generalized Algebraic Difference Approach (GADA). All the equations directly estimate dominant height and site index from any dominant height and age. The fittings were carried out using the base-age-invariant nested iterative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Site quality; Height-age relationship; Generalized algebraic difference approach; Base-age dynamic equation; Autocorrelation.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100008