Correlations between Brinell hardness and basic density in black locust - differences along the stem
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2015, Vol 91, Issue
Abstract
Correlations between Brinell hardness and basic density in Black locust - differences along the stem. A study of the relationship between wood density and hardness was carried out on straight-trunked black locust trees present in three stands in western Poland. Each stand was represented by 10 trees cut in such a way as to generate logs from the lower, central and top parts of the trunk. Brinell hardness was determined for the samples of wood obtained, as measured in the longitudinal, radial and tangential directions, with Pearson correlation coefficients applied to determine the relationship between the two features. Where the comparison based on sites was concerned, hardness for trunks considered as a whole was only found to correlate with density in the case of the longitudinal measurement of wood from trees representing the Wołów stand (coefficient of 0.44). In contrast, the hardness determined along the trunk for the three different sites correlated with the density of wood from central stem parts as measured radially and tangentially (0.66 and 0.61 respectively), as well as with wood of the lower part, also measured tangentially (0.74). Such results are at odds with the findings of earlier researchers, and the interpretation of the relationships noted needs to be related to the findings from anatomical analyses of wood carried out previously for the same black locust trees.
Authors and Affiliations
Marcin Klisz, Joanna Ukalska, Andrzej Noskowiak, Tomasz Wojda, SZYMON JASTRZĘBOWSKI, MARCIN MIONSKOWSKI, Iwona Szyp-Borowska
Keywords
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