Proportion of juvenile wood and mature wood in stems of European larch (Larix decidua Mill.) origin from experimental area in LZD Siemianice
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 94, Issue
Abstract
Proportion of juvenile wood and mature wood in stems of European larch (Larix decidua Mill.) origin from experimental area in LZD Siemianice. In this work the proportion of juvenile and mature wood in different European larch provenances were examined. Research were carried out on experimental plot in the District of Siemianice Forest Experimental Station established according to IUFRO program in 1966. This work is a continuation of series research published earlier and focused on wood properties. The aim of this research was to analyze influence of provenance of European larch on proportion of juvenile and mature wood in stems. As a research material a 5cm thick disks were taken from a model trees at a breast height (1.3 m). For separation juvenile and mature wood on disks we used changes of proportion between early wood and latewood in annual rings. For proportion of macrostructure elements the ratio MW/JW was used (area of mature wood to area of juvenile wood). It was found that proportion of mature wood and juvenile wood is different between some provenances. Consequently whole plots are divided into two groups: the first with relative more mature wood (higher ratio MW/JW) and the second with less mature wood (lower ratio MW/JW)
Authors and Affiliations
Marcin Jakubowski, Jarosław Szaban, Arkadiusz Tomczak, Tomasz Jelonek, Wojciech Kowalkowski
Keywords
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