Volumetric composition of some Pakistani timbers
Volumetric composition of some Pakistani timbers
Ghulam Mustafa Nasir
ABSTRACT
Important local hardwood species were studied for the volume of various wood elements. Photomicrographs of cross section of each species were prepared under standard laboratory procedures and data was collected by wood image weighing method for the percentage of wood volume occupied by fibers, vessels, longitudinal parenchyma and wood rays in each species. Results showed that in Acacia nilotica, Dalbergia sissoo, Fraxinus excelsior. Albizzia lebbek, A. procera, Mangifera indica, Alnus nitida, Juglans regia, Populus euphratica. Quercus incana, Platanus orientalis, Acer caesium and Cedrela toona, major portion of the wood by volume was composed of fibers. In Acacia modesta, Melia azedarach, Tamarix aphylla, Prosopis cineraria. Bombax ceiba and Morus alba, greater volume of the wood was occupied by parenchymatous cells. Whereas, the wood volume occupied by vessels was found higher (44%) only in Aesculus indica. However, it was observed about 20% in A. nilotica, F. excelsior. M. azedarach, P. euphratica, P. orientalis, P. cineraria, C. toona and M. alba.
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June 2001
Vol. 51, Iss. 2
