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Improving Air Quality by Nitric Oxide Consumption of Climate-Resilient Trees Suitable for Urban Greening

Zhang, Jiangli; Ghirardo, Andrea; Gori, Antonella; Albert, Andreas; Buegger, Franz; Pace, Rocco; Georgii, Elisabeth; Grote, Rüdiger; Schnitzler, Jörg-Peter; Durner, Jörg; Lindermayr, Christian

Abstract:
Nitrogen oxides (NOx), mainly a mixture of nitric oxide (NO) and nitrogen dioxide (NO2), are formed by the reaction of nitrogen and oxygen compounds in the air as a result of combustion processes and traffic. Both deposit into leaves via stomata, which on the one hand benefits air quality and on the other hand provides an additional source of nitrogen for plants. In this study, we first determined the NO and NO2 specific deposition velocities based on projected leaf area (sVd) using a branch enclosure system. We studied four tree species that are regarded as suitable to be planted under predicted future urban climate conditions: Carpinus betulus, Fraxinus ornus, Fraxinus pennsylvanica and Ostrya carpinifolia. The NO and NO2 sVd were found similar in all tree species. Second, in order to confirm NO metabolization, we fumigated plants with 15NO and quantified the incorporation of 15N in leaf materials of these trees and four additional urban tree species (Celtis australis, Alnus spaethii, Alnus glutinosa, and Tilia henryana) under controlled environmental conditions. Based on these 15N-labeling experiments, A. glutinosa showed the most effective incorporation of 15NO. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000124016
Veröffentlicht am 01.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 29.09.2020
Sprache Englisch
Identifikator ISSN: 1664-462X
KITopen-ID: 1000124016
HGF-Programm 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Weitere HGF-Programme 12.02.05 (POF III, LK 01) Atmospheric Exchange Processes
Erschienen in Frontiers in plant science
Band 11
Seiten 549913
Nachgewiesen in Dimensions
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