Dendroclimatological research based on the response function and the Huber's method concerned 5 populations oř Douglas fir (Pseudotsuga menziesii Franco) from the territories of Western Pomerania, Great Poland and the Beskid Żywiecki. The aim of the research was to determine the influence of the climate on the formation of cambial growth of the species that had been introduced into die Polish forests. It was concluded that thermic conditions of winter time had a very big impact on the annual growth of Douglas fir which grows on the lowlands, and a smaller impact on that from the mountains. Pluvial conditions played a less important role in the tree-ring formation process.
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