Dynamics of volatile organic compounds in a western Mediterranean oak forest
Yáñez Serrano, Ana María (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Bach, Albert (Centre de Ciència i Tecnologia Forestal de Catalunya (CTFC))
Bartolomé-Català, David (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Matthaios, Vasileios (University of Birmingham)
Seco, Roger (University of Copenhagen)
Llusia, Joan (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Filella, Iolanda (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Date:	2021
Abstract:	Volatile organic compounds (VOCs) are emitted from many sources and have important implications for plant fitness, ecological interactions, and atmospheric processes, including photochemistry and ozone formation. Forest ecosystems are strong sources of biogenic VOCs. We aimed to characterize forest below-canopy VOC mixing ratios, monitored by Proton Transfer Reaction Mass Spectrometry (PTR-MS), at Montseny Natural Park, a Mediterranean forest 50 km from the Barcelona urban area. Measurements were taken every 2 min during six months around the maximum emission period of summer. All VOCs had diel cycles with higher mixing ratios during the day, but different patterns over time. Monitored VOCs were grouped as biogenic, oxygenated, or aromatic compounds. Additionally, a positive matrix factorization analysis identified four emission profiles that were attributed to photochemical VOC production, biogenic emissions, mixed VOC emission sources, and traffic emissions. Even though the biogenic source was the strongest source profile at the site, we found a strong influence of anthropogenic air masses infiltrating the forest canopy and altering the biogenic air masses at the site.
Grants:	Agencia Estatal de Investigación PID2019-110521GB-I00 European Commission 610028 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Volatile organic compounds ; Montseny Natural Park ; Positive matrix factorization ; Biogenic and anthropogenic VOC interaction
Published in:	Atmospheric Environment, Vol. 257 (July 2021) , art. 118447, ISSN 1873-2844

DOI: 10.1016/j.atmosenv.2021.118447

14 p, 12.1 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Research articles
Articles > Published articles