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The study was based on the empirical material collected from 78 beech−pine stands located in the territory of the Miłomłyn (46 plots) and Stare Jabłonki (32 plots) Forest Districts. On the basis of the collected material, a breast height diameter growth model has been developed for the beech growing in the understorey of pine−beech stands. The developed function is an integral part of the growth model...
This study was carried out in north−eastern Poland in 20 Scots pine stands with well−developed lower layer of pedunculate oak. In each stand, 5 highest oak trees were selected. Basing on the stem analysis, a growth model for oak undergrowth in Scots pine stands was elaborated. It can be used for determination the height growth rate in relation to the age and height of oak. Obtained model was compared...
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