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Growth and development of silver fir (Abies alba Mill.) regeneration and restoration of the species in the Karkonosze Mountains

Author

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  • D. Dobrowolska

    (Department of Forest Ecology and Wildlife Management, Forest Research Institute, Raszyn, Sękocin Stary, Poland)

Abstract

The main task of the study was to investigate the growth conditions of silver fir natural regeneration in the Karkonosze Mts. (Poland). The paper examines the quantity and quality of light reaching the forest floor in stands of different canopies. The aim of the study was also to define the optimal site conditions for silver fir planting under stand canopy. Data on the natural regeneration and stand structure of each investigated stand were collected on circular plots in a grid of 15 × 15 m in 1999 and 2000. Biometric measurements of fir plants planted under various stand canopies were done three times (May 1999, autumn 2000 and 2001). It was found that the fir was not a dominant tree in all size classes from seedlings to saplings. Seedlings (both phases) of spruce, beech, sycamore and rowan occurred in all studied stands. The optimal conditions for fir development were found under larch canopy. That was demonstrated by the highest increment of height, diameter and offshoots. The worst conditions for fir growth were under beech and spruce canopy, which was indicated by the lowest diameter and height. The highest PAR was recorded under pine canopy, whereas the lowest one under beech canopy. Beech stand induced a lower R:FR ratio than the other tree species both on sunny and cloudy days. The highest R:FR ratio was found under the canopy of larch and pine stands.

Suggested Citation

  • D. Dobrowolska, 2008. "Growth and development of silver fir (Abies alba Mill.) regeneration and restoration of the species in the Karkonosze Mountains," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 54(9), pages 398-408.
    • Handle: RePEc:caa:jnljfs:v:54:y:2008:i:9:id:29-2008-jfs
    DOI: 10.17221/29/2008-JFS
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    Cited by:

    1. B. Jarčuška & S. Kucbel & P. Jaloviar, 2010. "Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 56(4), pages 147-153.

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