| Title: | Rapid leaf development drives the seasonal pattern of volatile organic compound (VOC) fluxes in a 'coppiced' bioenergy poplar plantation |
| Author(s): | Brilli F; Gioli B; Fares S; Terenzio Z; Zona D; Gielen B; Loreto F; Janssens IA; Ceulemans R; |
| Address: | "Department of Biology, Centre of Excellence on Plant and Vegetation Ecology (PLECO), University of Antwerp, Wilrijk, B-2610, Belgium. National Research Council, Institute of Agro-environmental and Forest Biology (IBAF-CNR), Via Salaria Km 29,300, Monterotondo Scalo, 00016, Roma, Italy. Institute for Sustainable Plant Protection (IPSP-CNR), National Research Council, Via Madonna del piano 10, Sesto Fiorentino, 50017, Italy. Biometeorology Institute (IBIMET-CNR), National Research Council, Via G. Caproni 8, Firenze, 50145, Italy. Council for Agricultural Research and Economics, Research Centre for the Soil-Plant System (RPS-CREA), Via della Navicella 2-4, Roma, 00184, Italy. Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK. Department of Biology, Agriculture and Food Sciences (CNR-DISBA), National Research Council, P.le Aldo Moro, Roma, 00185, Italy" |
| ISSN/ISBN: | 1365-3040 (Electronic) 0140-7791 (Linking) |
| Abstract: | "Leaves of fast-growing, woody bioenergy crops often emit volatile organic compounds (VOC). Some reactive VOC (especially isoprene) play a key role in climate forcing and may negatively affect local air quality. We monitored the seasonal exchange of VOC using the eddy covariance technique in a 'coppiced' poplar plantation. The complex interactions of VOC fluxes with climatic and physiological variables were also explored by using an artificial neural network (Self Organizing Map). Isoprene and methanol were the most abundant VOC emitted by the plantation. Rapid development of the canopy (and thus of the leaf area index, LAI) was associated with high methanol emissions and high rates of gross primary production (GPP) since the beginning of the growing season, while the onset of isoprene emission was delayed. The highest emissions of isoprene, and of isoprene photo-oxidation products (Methyl Vinyl Ketone and Methacrolein, iox ), occurred on the hottest and sunniest days, when GPP and evapotranspiration were highest, and formaldehyde was significantly deposited. Canopy senescence enhanced the exchange of oxygenated VOC. The accuracy of methanol and isoprene emission simulations with the Model of Emissions of Gases and Aerosols from Nature increased by applying a function to modify their basal emission factors, accounting for seasonality of GPP or LAI" |
| Keywords: | "*Biofuels Butadienes/analysis Carbon/analysis Environment Hemiterpenes/analysis Mass Spectrometry Methanol/analysis Models, Biological Pentanes/analysis Plant Leaves/*growth & development/physiology Populus/*physiology *Seasons Time Factors Volatile Organ;" |
| Notes: | "MedlineBrilli, Federico Gioli, Beniamino Fares, Silvano Terenzio, Zenone Zona, Donatella Gielen, Bert Loreto, Francesco Janssens, Ivan A Ceulemans, Reinhart eng Research Support, Non-U.S. Gov't 2015/09/20 Plant Cell Environ. 2016 Mar; 39(3):539-55. doi: 10.1111/pce.12638. Epub 2015 Dec 11" |
