| Abstract [eng] |
The phenomenon of climate change attracts attention of scientists all over the world. These issues are addressed by dendrochronological research as well. Past climate and hydrological conditions can be analyzed by assessing tree growth rates. Several studies have shown that pine trees growing in peatlands represent an exclusive object for decadal to multi-millennial (hydro)climatic reconstructions. The current study employs complex hydrological and dendrochronological research methods for the analysis of changes in climate and in raised bog water regime, determination of interrelations between meteorological conditions and tree growth, reconstruction of raised bog pine growth in the industrial era. The dendrometric method employed for the investigation of tree radial-growth changes enables determining not only tree increment dynamics but also changes in tree stem girth in general, the physiological state of trees in certain periods of time, as well as its dependence on hydrometeorological conditions and peculiarities of ring formation. The tree-ring series compiled based on tree studies are used for the reconstruction of groundwater levels. Considering the widespread availability of pine remains in peat deposits of boreo-nemoral peat bogs, the newly established relations can be used to reconstruct hydrological variability over major parts of the Holocene. Explaining the relationship between the annual ring of pine trees growing in peatlands and hydrometeorological conditions, most of the data analyzed in this work was collected during the Lithuanian and Swiss cooperation project CLIMPEAT (No CH-3-ŠMM-01/05). |
