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Tytuł artykułu

Circumferential variation in heartwood in stands of black locust (Robinia pseudoacacia L.)

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Within the framework of work on the anatomical structure and durability features of wood, as well as analyses of radial growth, a preliminary analysis was carried out in regard to variation in the heartwood within Black locust trees. The research was carried out in three stands of straight-stemmed trees in western Poland. The variation displayed by the heartwood around its circumference and the eccentricity of the trunks was characterised with reference to: the heartwood radial index (HRI), the cross-sectional shape factor for heartwood (CSsf) and the pith eccentricity index (PEcc). The results confirmed a relationship between the degree of variation around the circumference of the heartwood and the mean age of the stands, while at the same time making clear the high level of differentiation in radial variation at the level of the individual tree. The findings suggest that the fertility of the habitat does not exert much of an influence on the generation of heartwood in Black locust trees. No statistically significant relationship was obtained when the circumferential variation of the heartwood was set against the total height or diameter at breast-height. Only in the case of crown length, and then only at the Wołów site, was there a moderate negative correlation with the coefficients of circumferential variation.








Opis fizyczny



  • Department of Silviculture and Genetics, Forest Research Institute, Sekocin Stary, Poland
  • Department of Silviculture and Genetics, Forest Research Institute, Sekocin Stary, Poland
  • Department of Silviculture and Genetics, Forest Research Institute, Sekocin Stary, Poland
  • Department of Econometrics and Statistics, Faculty of Applied Informatics and Mathematics, Warsaw University of Life Sciences - SGGW, Warsaw, Poland


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