Therefore, wood density provides guidance on the potential uses for a particular wood species. 2009) and is correlated with some wood mechanical properties such as dynamic bending strength, modulus of elasticity and compression strength (Machado et al. Wood density is connected to several functional tree traits (Chave et al. Density is one of its most important technological and ecological properties. Wood is a complex material with outstanding physical and mechanical properties. These results help fill the gaps in wood properties database for tree forest species in Madagascar. Regarding within-tree variation, wood density does not vary from pith to bark. Tree diameter had no influence on average wood density. It was higher on poor ferralitic than on fertile lowland soils. ResultsĪverage wood density was higher on shade-tolerant than on light-demanding species. Within-tree and between-tree variations of wood density were analysed. Each wood core was sectioned into 1 cm-long segments on which measures of volume and weight were performed. We extracted pith-to-bark core samples from the trunk of 204 trees from 23 species. This study investigated the effect of species, tree diameter, soil types and the distance from the pith on wood density in native hardwood species from a natural, mid-elevation rainforest in Madagascar. The variation in wood density depends on a range of intrinsic or environmental factors. Furthermore, wood density is often used in forest biomass and carbon stock estimates. Wood density (WD) is an important wood property as it correlates with several functional tree traits and mechanical wood properties. None of these factors influenced the variation of density related to the distance to the pith. In a tropical rainforest of Madagascar, tree species differed in average wood density depending on their light requirements and on the soil type.
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