Full text of this article is only available in PDF format.

Ville Hallikainen (email), Mikko Hyppönen, Juha Hyvönen, Juhani Niemelä

Establishment and height development of harvested and naturally regenerated Scots pine near the timberline in North-East Finnish Lapland

Hallikainen V., Hyppönen M., Hyvönen J., Niemelä J. (2007). Establishment and height development of harvested and naturally regenerated Scots pine near the timberline in North-East Finnish Lapland. Silva Fennica vol. 41 no. 1 article id 308. https://doi.org/10.14214/sf.308

Abstract

Researchers and professionals in practical forestry have faced problems concerning the regeneration success of Scots pine in natural regeneration near the timberline in North-East Lapland. The aim of the study was to analyze the seedling establishment and seedling height development of Scots pine in seed-tree stands in the area. The average number of living pine seedlings in the study stands was about 1000 ha–1, but there was considerable variation between the stands. The seedling density was modelled using a multinomial logistic regression with a random factor. Forest site type and the time since seed-tree cutting were the most significant explanatory variables in the model. The probability of reaching the acceptable seedling density was higher on dry site types than on the more fertile ones. The probability increased with the time elapsed since the regeneration activities. Effective temperature sum and the number of intermediate pines also positively affected the probability, but the presence of residual trees negatively. On northern and eastern slopes the probability was lower than on southern and western ones. Seedling height was modelled using a linear mixed model. The age of a dominant seedling was the most positively effective explanatory variable in the height development model. Other positively affecting significant predictors were time since seed-tree cutting, number of intermediate birches, and distance between a seedling and the nearest seed tree. Degree of paludification had a negative effect. The study suggests that the regeneration of Scots pine in North-East Lapland is a relatively slow process.

Keywords
natural regeneration; seedling establishment; Scots pine; timberline; seed-tree method; density model; height development model

Author Info
  • Hallikainen, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail ville.hallikainen@metla.fi (email)
  • Hyppönen, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail mikko.hypponen@metla.fi
  • Hyvönen, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail juha.hyvonen@metla.fi
  • Niemelä, Finnish Forest Research Institute, Rovaniemi Research Unit, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail jn@nn.fi

Received 22 March 2006 Accepted 2 February 2007 Published 31 December 2007

Views 2632

Available at https://doi.org/10.14214/sf.308 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Franke A. K., Aatsinki P. et al. (2015) Quantifying changes of the coniferous forest lin.. Silva Fennica vol. 49 no. 4 article id 1408
Akujärvi A., Hallikainen V. et al. (2014) Effects of reindeer grazing and forestry on grou.. Silva Fennica vol. 48 no. 3 article id 1153
Hyppönen M., Hallikainen V. et al. (2013) The contradictory role of understory vegetation .. Silva Fennica vol. 47 no. 1 article id 903
Hallikainen V., Hyppönen M. et al. (2010) Family forest owners’ opinions about forest mana.. Silva Fennica vol. 44 no. 2 article id 158
Nikula A., Hallikainen V. et al. (2008) Modelling the factors predisposing Scots pine to.. Silva Fennica vol. 42 no. 4 article id 235
Hallikainen V., Hyppönen M. et al. (2007) Establishment and height development of harveste.. Silva Fennica vol. 41 no. 1 article id 308