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Articles containing the keyword 'metsikön tiheys'

Category : Article

article id 5207, category Article
Seppo Kellomäki. (1984). Havaintoja puuston kasvatustiheyden vaikutuksesta mäntyjen oksikkuuteen. Silva Fennica vol. 18 no. 2 article id 5207. https://doi.org/10.14214/sf.a15386
English title: Observations on the influence of stand density on branchiness of young Scots pines.
Original keywords: mänty; oksikkuus; oksan läpimitta; metsikön tiheys; kasvatustiheys; kuolleet oksat; elävät oksat
English keywords: Pinus sylvestris; Scots pine; stand density; branchiness; branch diameter
Abstract | View details | Full text in PDF | Author Info

The study based on young Scots pine (Pinus sylvestris L.) of varying density showed that number of living branches per whorl and total number of living branches per tree were negatively correlated with stand density. On the contrary, the number of dead branches increased with increasing stand density. The diameter of living and dead branches decreased with increasing stand density. Consequently, the branchiness, i.e. the share of the branch cross-sectional area from the surface area of the stem, decreased in dense stands compared with the thin stands. At the densest stands the branchiness, however, levelled of indicating a greater decrease of the radial growth at stems than at branches. The 2/3 power law described relatively well the relationship between stand density and mean squared branch diameter of living branches.

The PDF includes a summary in English.

  • Kellomäki, E-mail: sk@mm.unknown (email)
article id 5200, category Article
Seppo Kellomäki, Timo Nevalainen. (1983). Näkökohtia puuston tiheyden ja puiden koon välisestä suhteesta. Silva Fennica vol. 17 no. 4 article id 5200. https://doi.org/10.14214/sf.a15183
English title: Relationship between stand density on tree size.
Original keywords: kilpailu; metsikön tiheys; puiden koko
English keywords: tree size; modelling; stand density; within-stand competition
Abstract | View details | Full text in PDF | Author Info

Two Japanese models regarding the within-stand competition have been reviewed on the basis of relevant literature. Competition-density and 3/2 th power models seem to be applicable also into tree stands. The latter model has been applied into the material obtained from literature. Computations showed consistancy with the results obtained elsewhere in the world. It is concluded that also in Finnish conditions the 3/2 th power law may have great potentials in describing the effects of stand density on tree size.

The PDF includes a summary in English.

  • Kellomäki, E-mail: sk@mm.unknown (email)
  • Nevalainen, E-mail: tn@mm.unknown

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