Yrjö Ilvessalo 
Notes on some forest (site) types in North America
Ilvessalo Y. (1929). Notes on some forest (site) types in North America. Acta Forestalia Fennica vol. 34 no. 39 article id 7252. https://doi.org/10.14214/aff.7252
Abstract
The article includes observations on forest site types in Canada and the United States, with special emphasis on forests of lodgepole pine (Pinus murrayana, now Pinus contorta Douglas ex Loudon) which the author considers a species that can become a favourite exotic tree species in Finland. Some notes are made also about Jack pine (Pinus banksiana Lamb.) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests. The author was not able to make a systematic forest type investigation, because the journey was made on another purpose. The article describes the vegetation and climate of the visited areas, and divides the forest site types in three groups: Dry forest site types, moist forest site types and grass-herb site types. The vegetation and plant species on several subtypes are described in detail.
The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander.
Keywords
Pinus banksiana;
jack pine;
Canada;
Douglas-fir;
Pseudotsuga menziesii;
Pinus contorta;
United States;
contorta pine;
Pinus murrayana
Published in 1929
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