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Lauri Ilvessalo (email)

Tutkimuksia mäntymetsien uudistumisvuosista Etelä- ja Keski-Suomessa

Ilvessalo L. (1917). Tutkimuksia mäntymetsien uudistumisvuosista Etelä- ja Keski-Suomessa. Acta Forestalia Fennica vol. 6 no. 2 article id 7013. https://doi.org/10.14214/aff.7013

English title: Studies on the regeneration years of Scots pine forests in Southern and Central Finland

Abstract

The success of natural regeneration of Scots pine (Pinus sylvestris L.) is dependent on the amount and quality of seeds produced in each year. While seed production of Scots pine in Northern Finland is well known, there is little information about frequency of good seed years in Southern and Central Finland. The success of regeneration of Scots pine was studied by defining from the growth rings of felled sample trees in which year they started to grow. The aim was to choose sample trees so that they would form a continual series from seedlings to 100 years old trees. In the material there was too little sample trees from certain years. However, within the period of 1827-1910 it could be identified 13 good regeneration years of pine in Southern Finland. According to the study, pine has regenerated very well every 6th year and at least moderately well every 4th year. When compared to the previous studies made in Northern Finland, part of the good regeneration years seems to be same both in Northern and Southern Finland. Regeneration of Scots pine is affected also by the type and condition of the site.

The PDF includes a summary in German.

Original keywords
luontainen uudistuminen; uudistuminen; siemensato; siemenvuosi

English keywords
natural regeneration; seed production; seed year

Published in 1917

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Available at https://doi.org/10.14214/aff.7013 | Download PDF

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