Modelos descriptivos de distribución de madera juvenil y madura en Robinia pseudoacacia

Maderas: ciencia y tecnologia

Cobas, Ana Clara¹  Monteoliva, Silvia² 

[1] Consejo Nacional de Investigaciones Científicas y Técnicas, Junín, Argentina;Universidad Nacional de La Plata, La Plata, Argentina

关键词: Black locust;    fiber length;    patterns of variations;    physical properties;    wood density.;   

DOI  :  10.4067/S0718-221X2018005021201

学科分类：农业科学（综合）

来源: Universidad del Bio-Bio

【 摘 要 】

The objectives of the work were 1- to determine the patterns of axial and radial variation of wood density and fiber length in the loge of Robinia pseudoacacia, 2- to determine the transition age between juvenile and mature wood, 3- Construct a descriptive model of distribution of juvenile wood in the log based on wood density and fiber length. Slices were cut at 4 heights in the trunk (0,3 m; 1,3m; 2,3m y 4m above the ground) in 10 trees from Buenos Aires-Argentina (7-15 years old) implanted in the Province of Buenos Aires. The normal density12% and fibre length were determined in radial specimens obtained every 3 growth rings at all heights. The density showed homogeneity values along the commercial shaft, with a range of magnitude that classified as semi-heavy wood (750 - 823 kg/m3). The fiber length showed radial increase of their values from pith to bark and no axial variations. The model of juvenile wood resembles the model of central cylinder but of smaller diameter at the apex. The juvenile cone would form until the age of 3-6 years.

【 授权许可】

CC BY-NC