Full text of this article is only available in PDF format.

Hannu Mannerkoski (email)

Ekologisia havaintoja eräältä ojitetulta suolta.

Mannerkoski H. (1973). Ekologisia havaintoja eräältä ojitetulta suolta. Silva Fennica vol. 7 no. 2 article id 4882. https://doi.org/10.14214/sf.a14718

English title: Ecological investigations in a drained peatland area

Abstract

The paper deals with the relationships between macronutrients, ground vegetation and tree crop on a drained peatland area in Central Finland. The former herb-rich spruce swamp was drained in 1930s. The Norway spruce (Picea abies (L.) H. Karst.) stand was established by planting under a nurse crop of birch, which was removed later.

There was a negative correlation between the thickness of the peat layer and the volume and mean height of the growing stock. This was found to depend on the negative correlation prevailing between the potassium content of the topmost peat layer and the thickness of the peat cover. The deficiency of potassium is clearly discernible as deficiency symptoms in the needles, the intensity of which showed a strong correlation with the stand characteristics studied. Among the nutrient characteristics of the topmost peat layer, total potassium and the N/K and P/K ratios showed the closest correlation with the stand characteristics. The communities into which the ground vegetation was divided differed from each other with regard to the calcium content of the peat substrate.

The PDF includes a summary in English.

Original keywords
kuusi; turvemaat; ojitetut suot; aluskasvillisuus; turpeen paksuus; ravinteet; ravinnepuutos; puusto

English keywords
Norway spruce; Picea abies; drained peatlands; nutrient deficiency; growing stock; nutrients; ground vegetation; thickness of peat

Published in 1973

Views 1577

Available at https://doi.org/10.14214/sf.a14718 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Mannerkoski H., Möttönen V. (1990) Soil water conditions and air-filled porosity on.. Silva Fennica vol. 24 no. 3 article id 5429
Mannerkoski H., (1978) Use of chemical totalizer of radiation in energy.. Silva Fennica vol. 12 no. 3 article id 5000
Mannerkoski H., (1973) Ecological investigations in a drained peatland .. Silva Fennica vol. 7 no. 2 article id 4882
Mannerkoski H., (1971) Effect of fertilization on the initial developme.. Silva Fennica vol. 5 no. 2 article id 4841
Laine J., Mannerkoski H. (1980) Effect on fertilization on tree growth and elk d.. Acta Forestalia Fennica vol. 0 no. 166 article id 7604
Aphalo P. J., Lahti M. et al. (2006) Responses of silver birch saplings to low soil t.. Silva Fennica vol. 40 no. 3 article id 328