Results of monitoring the vegetative phenological phasesof European beech (Fagus sylvatica L.) in 1991-2006

Authors

  • Emilie Bednářová Institute of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry in Brno, Zemědělská 3, Brno, 613 00, Czech Republic Author
  • Lucie Merklová Institute of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry in Brno, Zemědělská 3, Brno, 613 00, Czech Republic Author

Keywords:

phenological phases, beech, air temperature, vegetative period, climate change

Abstract

There are presented results of a sixteen-year study of vegetative phenological phases in European beech (Fagus sylvatica L.) in the area of  he Drahanska vrchovina Upland. The results of the monitoring show different starts and durations of phenological phases in individual years. A  large range was noted in spring phenological phases. The start and  duration of autumnal phenological phases has more regular character. The annual variability in the start and course of phenological phases in beech shows that in addition to genetie factors, also external conditions, particularly meteorological factors, participate in their start and duration.  Relationships between the start of phenological phases and changing  meteorological parameters are expressed with the sum of effective air  temperatures higher than 5°C. Also growth phases were evaluated in  relation to vegetative phenological phases. On the basis of the results  obtained it is evident that in recent years, the growth of the sum of  effective air temperatures occurs, particularly in the autumnal season with extension of the growing season, which can result in the disturbance of  physiological functions causing, in such a way, forest decline. Results of  phenological monitoring can contribute to explain effects of climatic changes on the stability of forest stands.

References

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Published

2007-01-01

Issue

Vol. 34 No. 2 (2007)

Section

Articles

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Copyright (c) 2007 Emilie Bednářová, Lucie Merklová (Author)

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