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Shoot and Needle Growth in Pinus Sylvestris as Related to Temperature in Northern Fennoscandia

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Shoot and needle growth of 20-year-old Pinus sylvestris trees was studied in relation to the temperature of the current and previous seasons at three localities in Northern Fennoscandia over a 10-year period. Leader length and the number of needle fascicles per leader had highly significant positive correlation coefficients with the mean June-August temperature of the previous season. A low number of needle fascicles per leader was associated with a high frequency of fascicles with three needles. Needle length showed a significant positive correlation with the mean temperature of the current growing season, particularly June-August temperature. Use of heat sums or respiration equivalents instead of mean temperatures did not significantly improve correlation coefficients. A highly significant positive correlation was also found between needle length and next year's leader growth. Forest Sci. 27:423-430.
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Keywords: Scotch pine; elongation growth

Document Type: Journal Article

Affiliations: Professor of Botany, Department of Botany, Agricultural University of Norway, N-1432 ├ůs-NLH, Norway

Publication date: 1981-09-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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