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- Title
Scots pine (Pinus sylvestris L.) and its habitat in Muraka bog under the influence of wastes from the Narva power plants (North-East Estonia).
- Authors
Otsa, Katri; Reisner, Vaike
- Abstract
Needle mass per area, nutrients, and stem radial increment of Scots pines (Pinus sylvestris L.) growing in a bog in the influence zone of the Narva thermal power plants, NE Estonia, were studied. Needles growing in the crown at a height of 3 m from ground had a considerably greater mass per area than those at a height of 1.5 m. From 1892 to 1963 the radial increment of pines in the bog was relatively stable. Great changes occurred in 1964-2004: sudden decreases of radial increment alternated with periods of increasing radial increment. Needles growing in the middle part of the crown exposed to pollution fluxes have 1.1-1.4 times higher nutrient concentrations than needles formed at a lower level of the crown. In the control area in SW Estonia away from industrial pollutants no statistically significant differences in the mineral content between needles growing in different crown layers were observed.
- Subjects
NARVA (Estonia); ESTONIA; SCOTS pine; POWER plants; INDUSTRIAL wastes; PLANT-soil relationships
- Publication
Proceedings of the Estonian Academy of Sciences, Biology, Ecology, 2006, Vol 55, Issue 2, p137
- ISSN
1406-0914
- Publication type
Article