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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Sujetovienė, Gintarė;Stakėnas, Vidas
Title: Changes in understorey vegetation of Scots pine stands under the decreased impact of acidifying and eutrophying pollutants
Other Title: Изменение живого надпочвенного покрова в древостоях сосны при уменьшении кислотных и эутрофических эмиссий
Is part of: Baltic forestry. Girionys : Lithuanian forest research institute, Vol. 13, no. 2, 2007
Extent: p. 190-196
Date: 2007
Keywords: Acidification, nitrogen deposition;Nitrogen deposition;Ellenberg indicator values;Understorey vegetation;Scots pine stands
Abstract: Understorey vegetation of Scots pine (Pinus sylvetris L.) forests subjected to intense air pollution stress in the impact zone of one of the largest air pollution sources in central Lithuania – the nitrogen fertilizer plant Achema – were studied in 31 sample plots first in 1988 and again in 2004. A recovery of the vegetation was observed since the first sample time and interpreted as due to a distinct reduction of emission of nitrogen and sulphur oxides. Study stands were 85-100 years old with vegetation assigned to the Vaccinio-myrtillosa site type. Species which frequency changed little (Vaccinium myrtillus, Pteridium aquilinum) and increased in frequency (Trientalis europaea, Luzula pilosa, Vaccinium vitis-idaea, Melampyrum pratense) were typical of site type species. During the study period nitrophilous species with indicator values for nitrogen >= 6 decreased in frequency. In 1988 nitrophilous plants comprised 58% of all herbaceous cover, while in 2004 only 21%. According to the unweighted Ellenberg indicator values the stands had become darker and less acidic. A significant decrease in nitrogen indicators was observed in 2004. The process of ground vegetation recovery was documented in terms of an increase in keystone species (Vaccinium myrtillus, V.vitis-idaea) and a reduction of nitrophilous species (e.c. Rubus idaeus)
Affiliation(s): Aplinkotyros katedra
Lietuvos miškų institutas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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