Issue Vol. 5
Vantenkova I., Kischenko I. Seasonal growth of Picea abies L. Karst. In northern Karelia // Resources and Technology. 2005. Vol. 5. P. 10‒13.



DOI: 10.15393/j2.art.2005.1922

Seasonal growth of Picea abies L. Karst. In northern Karelia

Vantenkova
   I V		PetrSU, @
Kischenko
   I T		PetrSU, @
Key words:
picea
growght
ecological factors
taiga		 Summary: Investigations were carried out on the territory of nothern Karelia in old tree spruce forests of Vaccinium myrtillus. It was established that the growth of above – ground vegetative organs of Picea abies depends in general on the air temperature conditions. The growth of shoots begins by rise of average daily temperature approximately to 9ºC, trunks to 12ºC, needles to 16ºС. It turned out that the air temperature did not limit the time of shoot growth reduction. The development of needles and wood trunks is reduced by air temperature decrease to 7–10ºC. The duration of studied vegetative organ growth composes from 53 to 79 days. The intensity of vegetative organ growth of Picea abies is more correlated with air temperature in the first half of their growth period (r = 0.4…0.6). The duration of sun shining influences favourably (r = 0.3…0.6), whereas relative moisture of air (r = -0.3…-0.6) and atmospheric precipitations (r =-0.3…-0.6) influence unfavourably on the intensity of growth processes.

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