Original title: Stomatal conductance of short rotation coppice based on sap flow measurements and its response to chosen meteorological variables
Authors: Orság, Matěj ; Trnka, Miroslav ; Fischer, Milan ; Kučera, J. ; Žalud, Zdeněk
Document type: Papers
Conference/Event: MendelNet 2012, Brno (CZ), 2012-11-21 / 2012-11-22
Year: 2012
Language: eng
Abstract: The main aim of this study was to derive stomatal conductance (gs) from sap flow measurements and explore some of possible applications of this method. Sap-flow and other meteorological variables were continuously monitored in poplar-based short rotation coppice (SRC) plantation in Bystřice nad Pernštejnem during growing season 2012. Sap flow of 8 trees was measured using heat dissipation method, then expressed as transpiration per square meter of projection area and by adding into rewritten Penman-Monteith equation the canopy conductance (gs) was obtained. Compared with direct measurements on leaf level this approach is advantageous for obtaining gs, because of integrating all leaf categories of tree or whole canopy. Further analysis also proved, that gs is strongly driven by VPD. Finally, it was found that the relationship between gs and VPD is also influenced by available soil moisture content.
Keywords: canopy conductance; sap flow; short rotation coppice; transpiration
Project no.: ED1.1.00/02.0073, EE2.3.20.0248, LH12037 (CEP)
Funding provider: GA MŠk, GA MŠk, GA MŠk
Host item entry: MendelNet 2012 - Proceedings of International Ph.D. Students Conference, ISBN 978-80-7375-656-7

Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0219351

Permalink: http://www.nusl.cz/ntk/nusl-151636


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