Original title:
Comparison of emissions of biogenic volatile organic compounds from leaves of three tree species
Authors:
Holišová, Petra ; Večeřová, Kristýna ; Pallozi, E. ; Guidolotti, G. ; Esposito, R. ; Calfapietra, Carlo ; Urban, Otmar Document type: Papers Conference/Event: Global Change: A Complex Challenge /4th/, Brno (CZ), 2015-03-23 / 2015-03-24
Year:
2015
Language:
eng Abstract:
Biogenic volatile organic compounds (BVOCs) play many roles in plants’ ecophysiology and have the potential to affect atmospheric quality due to their chemical reactivity. Rates of BVOC emissions are highly variable depending on plant species and growing condition. Our study evaluated the amounts and spectra of BVOCs emitted from three tree species. We investigated BVOC emissions from the leaves of mature Norway spruce and sessile oak saplings grown in the field and from 1-year-old cuttings of hybrid poplar grown under laboratory conditions. Emitted BVOCs were sampled on desorption Tenax tubes in parallel with gas-exchange measurements. After subsequent thermal desorption of Tenax tubes, BVOC profiles were estimated by gas chromatography coupled with mass spectrometry. The tree species showed substantial differences in BVOC emission rates per unit leaf area ranging between 2.33 and 25.67 nmol m–2 s–1. Spruce trees had the lowest BVOC emissions and oak had slightly higher BVOC emissions on average than did poplar. Isoprene composed more than 97% of total BVOC emissions from oak and poplar, while no isoprene emissions from spruce needles were detected. Spruce BVOC emissions were mainly composed of such monoterpenes as α-pinene, β-pinene, and limonene.
Keywords:
BVOC; chemical reactivity; emissions; Norway spruce; plants Project no.: LD13031 (CEP), LO1415 (CEP), EE2.3.20.0246, EE2.3.20.0267 Funding provider: GA MŠk, GA MŠk, GA MŠk, GA MŠk Host item entry: Global Change: A Complex Challenge : Conference Proceedings, ISBN 978-80-87902-10-3
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/11104/0256873