Artificial Drought in Scots Pine Stands: Effects on Soil, Ground Vegetation and Tree Condition

A drought simulation (roof experiment) was conducted in a 60-year-old Scots pine (Pinus sylvestris) stand in central Lithuania during 2003–2005. The stand represented a typical for Lithuania Scots pine forest of Pinetum vaccinio-myrtillosum type, growing on Arenosols. During the simulated-drought ex...

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Bibliographic Details
Published in:Annales botanici fennici 2009, Vol.46 (4), p.299-307
Main Authors: Ozolinčius, Remigijus, Stakėnas, Vidas, Varnagirytė-Kabašinskienė, Iveta, Buožytė, Rasa
Format: Article
Language:English
Subjects:
Defoliation
Drought
Forest ecology
Forest ecosystems
Forest soils
Ground vegetation
Humidity
litterfall
Mineral soils
Minerals
Pine trees
Pinus sylvestris
Scots pine
soil chemistry
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Summary:A drought simulation (roof experiment) was conducted in a 60-year-old Scots pine (Pinus sylvestris) stand in central Lithuania during 2003–2005. The stand represented a typical for Lithuania Scots pine forest of Pinetum vaccinio-myrtillosum type, growing on Arenosols. During the simulated-drought experiment, the changes in soil (humidity, pH, chemistry), ground vegetation (species abundant and composition) and tree condition (needle age, litterfall, crown defoliation) were recorded. The drought decreased soil humidity (O horizon and mineral soil down to the 100-cm depth) and increased the concentrations of some N compounds (in mineral topsoil). The cover of ground vegetation was significantly reduced, the needle age decreased, and crown defoliation increased as a result of drought.
ISSN:0003-3847
1797-2442
DOI:10.5735/085.046.0406