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Juhani Päivänen

Harvennuksen vaikutus lumi- ja routasuhteisiin nuoressa turvemaan männikössä.

Päivänen J. (1973). Harvennuksen vaikutus lumi- ja routasuhteisiin nuoressa turvemaan männikössä. Silva Fennica vol. 7 no. 2 article id 4881. https://doi.org/10.14214/sf.a14717

English title: The effect of thinning on the snow cover and soil frost conditions in a young Scots pine stand on drained peatland.

Abstract

The paper describes the results obtained from an investigation into the effect of thinning of different intensity and fertilization on the depth and water equivalent of the snow cover as well as on the depth of the soil frost in a young Scots pine (Pinus sylvestris L.) stand growing on drained peatland in Central Finland. Thinnings and fertilization was carried out in 1968, and the snow cover was followed in the winters 1970/71 and 1971/72.

Only extremely heavy thinnings (60% of the volume) seemed to increase the depth and water equivalent of the snow cover. The indirect effect of fertilization on the snow cover was insignificant. In the clear-cut sample plot of the study, soil frost was either not found at all or the depths of the frozen soil layer was smaller than in the other plots. When deciding the silvicultural measures to be taken in the case of tree stands growing on drained peatlands, there seems to be reason to avoid radical thinnings. Otherwise, the favourable influence of the trees on a site on its water relationships will be diminished.

The PDF includes a summary in English.

Original keywords
harvennushakkuu; lumi; lumen syvyys; ojitetut suot; turvemaat; routa; mänty; lumen vesiarvo

English keywords
drained peatlands; thinning; snow cover; depth of snow; water equivalent of snow; soil frost; Scots pine; Pinus sylvestris

Published in 1973

Available at https://doi.org/10.14214/sf.a14717 | Download PDF

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