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I. Lehtonen, S. Kellomäki, C. J. Westman

Ravinteiden kierto eräässä männikössä.

Lehtonen I., Kellomäki S., Westman C.J. (1976). Ravinteiden kierto eräässä männikössä. Silva Fennica vol. 10 no. 3 article id 4946. https://doi.org/10.14214/sf.a14792

English title: Nutrient cycle in a Scots pine stand I. Seasonal variation in nutrient content of vegetation and soil.

Abstract

The paper deals with variation in the nitrogen, phosphorus, potassium, calcium and magnesium content of vegetation and soil of young Scots pine (Pinus sylvestris L.) stand of Vaccinium site type situated in Central Finland. The material consists of sequential samples representing soil, ground vegetation and trees taken during summer 1974.

The amount of soluble nutrients in the humus layer decreased in June when maximum growth of trees and dwarf shrubs occurred. The nutrient content of this layer subsequently began to increase towards the end of the growing period.

The variation in the nutrient content of the bottom and ground layers followed a similar pattern. Nitrogen content increases at the beginning of the summer. After this phase it started to decrease and reached its lowest values by the end of growing period. Phosphorus and potassium content increased throughout the growing period.

The nutrient content of the needles and wood were positively correlated with tree height and negatively with the age of material. The highest values for the nutrient content were for new cells.

The PDF includes a summary in English.

Original keywords
mänty; metsäekologia; ravinnekierto; ravinnepitoisuus; aluskasvillisuus; maa; kasvukausi; neulaset

English keywords
Scots pine; Pinus sylvestris; soluble nutrients; ground vegetation; soil; needles

Published in 1976

Available at https://doi.org/10.14214/sf.a14792 | Download PDF

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