Climate impact on tree growth of selected tree species in Poland
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Climate change is one of the greatest challenges facing the modern world. It has a profound impact on the natural and social environment. Policy makers and natural resource managers need information on the direction and potential scope of climate change in order to better anticipate its potential effects and implement measures to adapt to climate change. Forestry is an area where changes are already visible, and adaptation measures aimed at ensuring the sustainability of forest ecosystems, due to the long-life cycle of trees, should be initiated ahead of time. The study attempts to evaluate trends in changes in radial increments of selected tree species in the era of changing climatic conditions and their sensitivity to thermal and pluvial conditions. Several native tree species, typical for Polish forests, and an introduced species -Douglas fir (Pseudotsuga menziesii) were selected for analysis. The empirical material included incremental data of trees representing from a dozen to several dozen sites of individual species, located in various parts of Poland, and meteorological data from stations located close to the research plots. For each site, a residual chronology of annual increments was developed, which was the basis for the research on the climate-growth relationship. It was investigated which meteorological factors have a positive and negative impact on the size of annual increments of trees and it was determined how this relationship changes over time. It was shown that the stability of the climate signal in tree incremental sequences was maintained until the beginning of the 1980s. Later, an increase in the strength of the correlation between the standardized measures of radial growth of trees and the average air temperature or the amount of precipitation in some months was observed, which indicates a greater sensitivity of trees to the current ranges of thermal and pluvial conditions.
Keywords: climate change, dendroclimatology, radial increments, climate-growth relationship
ID: 3486956