Matti Kärkkäinen 
Araukaarian ja männyn puuaineen ominaisuuksien vertailua.
Kärkkäinen M. (1977). Araukaarian ja männyn puuaineen ominaisuuksien vertailua. Silva Fennica vol. 11 no. 1 article id 4958. https://doi.org/10.14214/sf.a14809
English title: Comparison of wood properties of Parana pine and Scots pineAbstract
According to the available literature, the appearance of Parana pine (Araucaria angustifolia (Bertol.) Kuntze) wood resembles that of Scots pine (Pinus sylvestris L.). The anatomy is quite different, however. There are no resin canals and fusiform rays with resin canals in Parana pine. They are abundant in Scots pine, however. The basic density of Parana pine is higher. In both species the density increases from the pith outwards, the maximum being reached at the age of 100 years. Compression wood is more common in Parana pine than in Scots pine, and this makes the longitudinal shrinkage of Parana pine greater than that of Scots pine. Otherwise the shrinkage properties do not differ. The mechanical strength is of the same magnitude with the exception of hardness, where Parana pine is superior.
The PDF includes a summary in English.
Original keywords
tiheys;
mänty;
puuaines;
pihkatiehyet;
araukaaria
English keywords
Pinus sylvestris;
Scots pine;
wood;
density;
rays;
Araucaria angustifolia;
Panama pine
Published in 1977
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