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- Title
DENDROCHRONOLOGY OF 358-YEARS-OLD EUROPEAN BEECH (FAGUS SYLVATICA L.) FOREST STAND FROM TREE-LINE ZONE OF THE BALKAN RANGE MOUNTAIN, BULGARIA.
- Authors
Dimitrov, Dimitar Petrov
- Abstract
The impact of globally changing climate conditions on monodominant tree-line beech forests in the Balkan Mts., Bulgaria, was studied through the application of the dendrochronological method. Nineteen European beech (Fagussylvatica L.) cross-section stem discs from an elevation of1550 m a. s. l. in the Etropole Region were dated and measured. It was established that the age of the sampled beech trees varied from 177 to 358 years. Increment series were calibrated to temperatures and precipitations, using climate data from the hydrometeorological station Petrohan, situated at approximately the same elevation in the mountains as the sampled plot. The applied multiple regression analysis showed that the influence of the temperatures in the boundary zone of the vertical distribution of the European beech in Balkan Mts. is of higher significance for the formation of the tree-ring width (R²=0.56), as compared to the precipitations (R²=0.36). Application of response function analysis indicated that the high temperatures during the summer months June and July have negative influence on the annual radial increment. High temperatures in May and August have positive effect on tree-ring formation.
- Subjects
DENDROCHRONOLOGY; EUROPEAN beech; CLIMATE change; EFFECT of temperature on plants; HYDROMETEOROLOGICAL stations
- Publication
Silva Balcanica, 2019, Vol 20, Issue 3, p19
- ISSN
1311-8706
- Publication type
Article