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Are there memory effects on greenhouse gas emissions (CO$_{2}$, N$_{2}$O and CH$_{4}$) following grassland restoration?

Merbold, Lutz; Decock, Charlotte; Eugster, Werner; Fuchs, Kathrin; Wolf, Benjamin; Buchmann, Nina; Hörtnagl, Lukas

Abstract:
A 5-year greenhouse gas (GHG) exchange study of the three major gas species (CO$_{2}$, CH$_{4}$ and N$_{2}$O) from an intensively managed permanent grassland in Switzerland is presented. Measurements comprise 2 years (2010 and 2011) of manual static chamber measurements of CH$_{4}$ and N$_{2}$O, 5 years of continuous eddy covariance (EC) measurements (CO$_{2}$–H$_{2}$O – 2010–2014), and 3 years (2012–2014) of EC measurement of CH$_{4}$ and N$_{2}$O. Intensive grassland management included both regular and sporadic management activities. Regular management practices encompassed mowing (three to five cuts per year) with subsequent organic fertilizer amendments and occasional grazing, whereas sporadic management activities comprised grazing or similar activities. The primary objective of our measurements was to compare pre-plowing to post-plowing GHG exchange and to identify potential memory effects of such a substantial disturbance on GHG exchange and carbon (C) and nitrogen (N) gains and losses. In order to include measurements carried out with different observation techniques, we tested two different measurement techniques jointly in 2013, namely the manual static chamber approach and the eddy covariance technique for N$_{2}$O, to quantify the GHG exchange from the observed grassland site.
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Verlagsausgabe §
DOI: 10.5445/IR/1000130798
Veröffentlicht am 23.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung (IMK)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1726-4170, 1726-4189
KITopen-ID: 1000130798
Erschienen in Biogeosciences
Verlag Copernicus Publications
Band 18
Heft 4
Seiten 1481-1498
Nachgewiesen in Scopus
Web of Science
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