Outburst of senescence-related VOC emissions from a bioenergy poplar plantation
Copyright © 2020 The Authors. Published by Elsevier Masson SAS.. All rights reserved.
| Publié dans: | Plant physiology and biochemistry : PPB. - 1991. - 148(2020) vom: 01. März, Seite 324-332 |
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| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2020
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| Accès à la collection: | Plant physiology and biochemistry : PPB |
| Sujets: | Journal Article Eddy covariance Leaf greenness Leaf senescence Lipoxygenase products Methanol emission Net ecosystem exchange Oxygenated volatile organic compounds Proton-transfer reaction mass spectrometry Air Pollutants |
| Résumé: | Copyright © 2020 The Authors. Published by Elsevier Masson SAS.. All rights reserved. Leaf senescence is a catabolic process that emits volatile organic compounds (VOCs). In densely planted monocultures these VOC emissions occur in outbursts that might be relevant for the local air quality since these VOCs are typically oxygenated. The VOC emissions of a high-density poplar (Populus) bioenergy plantation were monitored along with meteorological parameters, CO2 and H2O exchanges, canopy greenness, and leaf area index during the second half of the year 2015. The emissions of 25 VOCs peaked at the beginning of September, coinciding with the onset of senescence. Together these VOC emissions amounted to a total of 2.85 mmol m-2, translated into 98.3 mg C m-2. The emission peak was mainly composed of oxygenated VOCs as methanol, acetic acid, and lipoxygenase products that are all typical for catabolic processes. So, the senescence process of the poplar plantation was very well reflected in the peak of VOC emissions |
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| Description: | Date Completed 13.04.2020 Date Revised 30.09.2020 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2020.01.024 |