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Acta Forestalia Fennica vol. 20 no. 3 | 1922

Category : Article

article id 7063, category Article
Yrjö Ilvessalo. (1922). Statistical studies on the vegetation in different forest types. Acta Forestalia Fennica vol. 20 no. 3 article id 7063. https://doi.org/10.14214/aff.7063
Keywords: vegetation; ; forest type; statistic
Abstract | View details | Full text in PDF | Author Info

The article statistically studies the vegetation patterns in different forest types.  

467 sample plots with area varying from one fourth of a hectare to one eighth, even one tenth of a hectare were collected. There are different amount of sample plots representing every forest type. The sample plots are located in 58 communes in southern parts of Finland, reaching from the Gulf of Finland up to Oulujärvi –see in northern Ostrobothnia. The vegetation was examined from rectangle shaped study plots in even structured and even-aged stands with one primary tree species.

The results are shown in tables for every forest type. The amount of species is at highest in the most nutritious forest types, and decreases with the shift to more infertile types. However, some species occur in all forest types, and some only or mostly on more barren types. The occurrence and abundance of most plant species does not seem to depend on the tree species of the stand, but there are some exceptions to this.

The possible shortcomings of the research method are discussed. The importance of systematic studying of the sample plots with a method of survey lines is emphasized.  

  • Ilvessalo, E-mail: yi@mm.unknown (email)

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