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1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 2012

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The effect of the late wood share upon density of the Polish pine wood as a function of its origin

Chuchała Daniel, Orłowski Kazimierz, Krzosek Sławomir

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2012

No. 77

118--124

The effect of the annual growth and the late wood share upon density of the Polish pine wood as a function of its origin. In the paper the variations of density of Polish pine (Pinus sylvestris L.) in a function of the late wood share in the annual growth with regard to the wood origin are presented. The measurement of density of wood was performed by using the stereometric method described in the works by Krzysik. This method consists in measurements the volume of the sample by determination of the various dimensions (length, width, height), and weighting of the sample mass. Nevertheless, measurements of the late wood share in the annual growth had been carried out according to own methodology which based on the classical method described in the work by Krzysik. The comparison was made for pine from natural forests derived from four different regions of Poland. The effect of the share of the late wood on the density Polish pine wood is observed. However, Pearson‘s r correlation coefficient values depend strongly on the examined wood origins.