Spatial and age-related variation in nutrient concentrations of Pinus sylvestris needles.
Helmisaari, Heljä-Sisko
Silva Fennica · 1992
doi:10.14214/sf.a15643 (opens in a new tab)
We email you when a new notice or a question about this paper appears.
Abstract
Spatial and age-related variation in nutrient concentrations of Scots pine ( L.) needles was studied during 1984â86 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.Pinus sylvestris
Abstract licence: CC BY-SA
Reads
Read by people on this page
None yet.
Checked or read by AI through naulon
None yet.
A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.
Are you an author?
Is this your paper?
Claim it to add your note and be paid when agents cite it. Free.