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| Titel |
Spatial variability of methane emissions in a Phragmites australis (Cav.) Trin. Ex Steud. dominated restored coastal brackish fen |
| VerfasserIn |
Stefan Koch, Gerald Jurasinski, Stephan Glatzel |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250074091
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| Zusammenfassung |
| Methane is a major greenhouse gas that significantly contributes to global warming with
a global warming potential 25 times higher than carbon dioxide over a 100 year
time horizon. Recently, closed chamber measurements of methane are replaced
by ecosystem based Eddy Covariance measurements where possible. However
estimates of emission factors for single vegetation units still need chamber based
measurements. The resulting emission factors may be influenced by the arrangement of
measurement spots in the ecosystem. Here, we analyze the spatial variability of annual
emissions estimates based on dynamic closed chamber measurements in pure and mixed
stands of Phragmites australis (Cav.) Trin. ex Steud. in a restored coastal brackish
fen.
Annual methane emissions per measurement location vary largely between 76.54 and
1332 kg ha-1 a-1 CH4 but they do not differ significantly between pure and mixed stands
of Phragmites australis. Mantel tests show no correlation of distances between spots and the
variation in methane emissions (p |
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