Alvar Palmgren 
Studies on vegetation characters of coniferous forests
Palmgren A. (1922). Studies on vegetation characters of coniferous forests. Acta Forestalia Fennica vol. 22 no. 2 article id 7071. https://doi.org/10.14214/aff.7071
Abstract
The paper deals with the ground vegetation of the barren coniferous forests of Åland Islands and seeks to describe its special vegetation characters with general features. The study is based on data collected during summers from 1918-1922 on Åland Islands. Work presents the forest types of Åland Islands classified according Cajander (1909) with their typical species.
The Ålandian coniferous forests seem to have a low number of species. This is because they are mostly old and closed, and have been developing for a long time without human induced disturbances from outside. Some changes have occurred due to forest fires. There is very few traces of non-native species in the forests. If some are found, they have not been able to regenerate or distribute widely.
Keywords
native species;
vegetation;
diversity;
coniferous forests;
Åland Islands
Published in 1922
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