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

Martti Varmola (email)

Männyn istutustaimikoiden lustonleveysmalli.

Varmola M. (1989). Männyn istutustaimikoiden lustonleveysmalli. Silva Fennica vol. 23 no. 4 article id 5388. https://doi.org/10.14214/sf.a15546

English title: A model for ring width of planted Scots pine


Ring width at breast height is presented as a function of stem radius at breast height, the ratio between the diameter of a tree and the basal area median diameter, site index, and density of stand. By means of a conversion model ring width at stump height can be estimated as a function of ring width at breast height.

According to previous studies substantially better wood quality can be expected if mean width near the pith at stump height decreases from 3 to 2 mm. According to the present study only on the poorest sites suitable for Scots pine (Pinus sylvestris L.) planting (poor Vaccinium type) the ring width is less than 3 mm at stump height even in the thickest trees. On more fertile sites a substantial increase in the recommended planting density is required, if the mean ring width is aimed to be less than 3 mm. On the best sites it is impossible to reach mean ring width of less than 2 mm, when the density is less than 4,000 stems/ha. Only the thinnest trees on the poorest sites can have a mean ring width less than 2mm.

The PDF includes an abstract in English.

Original keywords
mänty; taimikot; lustonleveys; kasvumallit; puuaineen laatu

English keywords
Pinus sylvestris; wood quality; spacing; ring width; growth models

Published in 1989

Views 1544

Available at https://doi.org/10.14214/sf.a15546 | 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
Ruha T., Varmola M. (1997) Precommercial thinning in naturally regenerated .. Silva Fennica vol. 31 no. 4 article id 5635
Salminen H., Varmola M. (1993) Influence of initial spacing and planting design.. Silva Fennica vol. 27 no. 1 article id 5495
Varmola M., (1989) A model for ring width of planted Scots pine Silva Fennica vol. 23 no. 4 article id 5388
Kilkki P., Varmola M. (1979) A nonlinear simultaneous equation model to deter.. Silva Fennica vol. 13 no. 4 article id 5047
Kilkki P., Saramäki M. et al. (1978) A simultaneous equation model to determine taper.. Silva Fennica vol. 12 no. 2 article id 4995
Kilkki P., Varmola M. (1981) Taper curve models for Scots pine and their appl.. Acta Forestalia Fennica vol. 0 no. 174 article id 7621
Varmola M., Salminen H. et al. (2004) Thinning response and growth trends of seeded Sc.. Silva Fennica vol. 38 no. 1 article id 436