Spatial and age-related variation in nutrient concentrations of Pinus sylvestris needles.

Helmisaari, Heljä-Sisko

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

Silva Fennica vol. 26 no. 3 article id 5482 | 1992 | Article

Heljä-Sisko Helmisaari

Spatial and age-related variation in nutrient concentrations of Pinus sylvestris needles.

Helmisaari H.-S. (1992). Spatial and age-related variation in nutrient concentrations of Pinus sylvestris needles. Silva Fennica vol. 26 no. 3 article id 5482. https://doi.org/10.14214/sf.a15643

Abstract

Spatial and age-related variation in nutrient concentrations of Scots pine (Pinus sylvestris L.) needles was studied during 1984–86 in three stands of different stages of development. The dry weight of current needles was significantly (p < 0.05) higher in the tree top than in a composite sample representing the whole crown. However, there were no significant differences in the concentrations of nutrients in needles between upper and lower crown levels. The concentrations of mobile nutrients N, P, K and Mg decreased with increasing needle age whereas the concentrations of poorly mobile nutrients Ca, Mn and Fe increased during needle ageing. The coefficient of variation for nutrient concentrations varied irregularly when only a few trees were sampled but stabilized when tree number was ten or more.
The PDF includes an abstract in Finnish.

Keywords
Pinus sylvestris; spatial variation; nutrients; sampling; nutrient concentration; conifer needles

Published in 1992

Available at https://doi.org/10.14214/sf.a15643 | Download PDF

Click this link to register to Silva Fennica.

If you are a registered user, log in to save your selected articles for later access.

Contents alert

Export reference to EndNote / RefWorks

Your selected articles
Send to email

Lähde E., (1969) Biological activity in some natural and drained .. Acta Forestalia Fennica vol. 0 no. 94 article id 7601 (remove) | Edit comment

Kangas A., Mehtätalo L. et al. (2007) Modelling percentile based basal area weighted d.. Silva Fennica vol. 41 no. 3 article id 282 (remove) | Edit comment

Rosenberg O., Jacobson S. (2004) Effects of repeated slash removal in thinned sta.. Silva Fennica vol. 38 no. 2 article id 423 (remove) | Edit comment

Pietilä I., Kangas A. et al. (2010) Influence of growth prediction errors on the exp.. Silva Fennica vol. 44 no. 5 article id 111 (remove) | Edit comment

Rørstad P. K., Trømborg E. et al. (2010) Combining GIS and forest modelling in estimating.. Silva Fennica vol. 44 no. 3 article id 141 (remove) | Edit comment

Rouvinen S., Kouki J. (2011) Tree regeneration in artificial canopy gaps esta.. Silva Fennica vol. 45 no. 5 article id 88 (remove) | Edit comment

Kitahara F., Mizoue N. et al. (2010) Effects of training for inexperienced surveyors .. Silva Fennica vol. 44 no. 4 article id 133 (remove) | Edit comment

Lise Y., Kaya Z. et al. (2007) The impact of over-exploitation on the genetic s.. Silva Fennica vol. 41 no. 2 article id 291 (remove) | Edit comment

Cowan I., (2002) Fit, fitter, fittest; where does optimisation fi.. Silva Fennica vol. 36 no. 3 article id 536 (remove) | Edit comment

Sumida A., Nakai T. et al. (2009) Ground-based estimation of leaf area index and v.. Silva Fennica vol. 43 no. 5 article id 174 (remove) | Edit comment

Your search results