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Metsätieteen aikakauskirja Dissertationes Forestales Suo - Mires and Peat
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Full text of this article is only available in PDF format.

Matti Kärkkäinen (email)

Mänty- ja kuusirunkojen arvosuhteet.

Kärkkäinen M. (1986). Mänty- ja kuusirunkojen arvosuhteet. Silva Fennica vol. 20 no. 2 article id 5267. https://doi.org/10.14214/sf.a15446

English title: Value relations of Scots pine and Norway spruce stems

Abstract

A mathematical model was developed for determining the value of Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst.) stems on the basis of sawing and pulping. The model was based on selling prices of sawn goods, pulp and other products as well as processing costs. Sawing was applied to large-dimension parts of stems and pulping to other parts and small stems. Bark and other residues were burned. The quality of pine stems was described by the distance of the lowest dead branch. In spruce only stem size affected the quality-

According to the results, the size of stem affects considerably the value of pine stems and clearly that of spruce stems. The main reason is an increase in the productivity of frame sawing as the stem size increases. In pine another factor is the higher price of sawn goods. The effect of pulp price increases as the stem size decreases. Even in large sized stems the effect of pulp was notable as the value of chips and saw dust was determined on the basis of product values in export. The competition ability of mechanical pulp was greatly affected by the price of electricity.

The PDF includes an abstract in English.

Original keywords
kuusi; paperiteollisuus; mänty; sahatavara; sahateollisuus; raaka-aine; rungon koko

English keywords
Pinus sylvestris; Norway spruce; Picea abies; Scots pine; simulation; pulping; sawn goods; sawmill industry; pulp industry; raw material; stem size

Published in 1986

Views 2448

Available at https://doi.org/10.14214/sf.a15446 | Download PDF

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