Influence of Weather Factors on the Increment of Dominant and Suppressive Trees of Abies sibirica Ledeb and Picea obovata Ledeb. in the Middle Reaches of the Yenisei River
A. V. BENKOVA
Abstract
It is demonstrated that in the fir tree increment in the northern taiga , suppressed and dominant plants of Siberian pine and Scots spruce react in different manner to weather conditions. It is established that in July, the indices of radial increment in all fir and spruce trees correlate positively with precipitations independently of their position in the tree stand. A contrary reaction of radial increment of dominant and suppressed trees was observed in fir to changes of precipitations in June and temperature in July, and in spruce to changes of July temperature. The factor on which the radial increment depends stronger than on weather factors in all fir and spruce trees is the deficit of substance and energy resources.
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