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

Sakari Sarkkola (email), Hannu Hökkä, Timo Penttilä

Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots

Sarkkola S., Hökkä H., Penttilä T. (2004). Natural development of stand structure in peatland Scots pine following drainage: results based on long-term monitoring of permanent sample plots. Silva Fennica vol. 38 no. 4 article id 408. https://doi.org/10.14214/sf.408


We studied the dynamics of stand structure on drained peatland sites in Scots pine dominated stands untreated with thinnings. The data consisted of consecutive stand measurements in 10 permanent sample plots where the monitoring periods varied from 29 to 66 years. We assumed that the stand’s structural development was driven by the natural processes of regeneration, growth, and mortality, all related to inter-tree competition within the stand. The DBH distributions of live and dead trees at different times of post-drainage stand development – smoothed by Weibull function – were analysed to characterise the change in stand structure. The initial uneven-sized structure of the natural, widely-spaced stands became more uneven during the first decades following drainage due to enhanced regeneration. Later, as stand density and mean tree size continuously increased, the DBH distributions approached bell-shaped distributions. Accordingly, the suppressed trees showed their highest mortality rate during the first decades, but the peak of the mortality distribution shifted to larger trees along stand succession. The change in structure was faster in southern Finland than in northern Finland. We assumed the changes in stand dynamics reflected increased inter-tree competition, initiated by enhanced site productivity and increased stand stocking resulting from the ditching operation.

Pinus sylvestris; peatland; tree mortality; stand structure; drainage; dbh distribution

Author Info
  • Sarkkola, University of Helsinki, Department of Forest Ecology, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail sakari.sarkkola@helsinki.fi (email)
  • Hökkä, Finnish Forest Research Institute, Rovaniemi Research Station, P.O. Box 16, FI-96301 Rovaniemi, Finland E-mail hh@nn.fi
  • Penttilä, Finnish Forest Research Institute, Vantaa Research Centre, P.O. Box 18, FI-01301 Vantaa, Finland E-mail tp@nn.fi

Received 5 September 2003 Accepted 17 August 2004 Published 31 December 2004

Views 2495

Available at https://doi.org/10.14214/sf.408 | Download PDF

Creative Commons License CC BY-SA 4.0

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
Pukkala T., (1989) Prediction of tree diameter and height in a Scot.. Silva Fennica vol. 23 no. 2 article id 5375
Hökkä H., Laine J. (1988) Post-drainage development of structural characte.. Silva Fennica vol. 22 no. 1 article id 5341
Kellomäki S., Hänninen H. et al. (1987) A tentative model for describing the effects of .. Silva Fennica vol. 21 no. 1 article id 5302
Kapustinskaité T., (1975) Ash content of peatland soils and stand growth i.. Silva Fennica vol. 9 no. 3 article id 4924
Päivänen J., (1973) The effect of thinning on the snow cover and soi.. Silva Fennica vol. 7 no. 2 article id 4881
Lönnroth E., (1925) Studies on internal structure and development of.. Acta Forestalia Fennica vol. 30 no. 1 article id 7196
Hari P., Ross J. et al. (1996) Production process of Scots pine Acta Forestalia Fennica vol. 0 no. 254 article id 7525
Hari P., Kellomäki S. et al. (1982) Dynamics of early development of tree stand Acta Forestalia Fennica vol. 0 no. 177 article id 7624
Heikurainen Leo., (1980) Drainage condition and tree stands on peatlands .. Acta Forestalia Fennica vol. 0 no. 167 article id 7614
Vacek S., Vacek Z. et al. (2016) Structure, regeneration and growth of Scots pine.. Silva Fennica vol. 50 no. 4 article id 1564
Moilanen M., Hytönen J. et al. (2015) Fertilization increased growth of Scots pine and.. Silva Fennica vol. 49 no. 3 article id 1301
Siipilehto J., (2011) Local prediction of stand structure using linear.. Silva Fennica vol. 45 no. 4 article id 99
Siipilehto J., Sarkkola S. et al. (2007) Comparing regression estimation techniques when .. Silva Fennica vol. 41 no. 2 article id 300
Siipilehto J., (2006) Height distributions of Scots pine sapling stand.. Silva Fennica vol. 40 no. 3 article id 331
Kojola S., Penttilä T. et al. (2004) Impacts of different thinning regimes on the yie.. Silva Fennica vol. 38 no. 4 article id 407
Siipilehto J., (2000) A comparison of two parameter prediction methods.. Silva Fennica vol. 34 no. 4 article id 617
Jansons Ā., Robalte L. et al. (2016) Long-term effect of whole tree biomass harvestin.. Silva Fennica vol. 50 no. 5 article id 1661