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| Titel |
What rules GHG-(greenhouse gas)-fluxes in a prealpine bog - management or watertable? |
| VerfasserIn |
Christoph Förster, Matthias Drösler |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250045329
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| Zusammenfassung |
| Being an important sink of carbon, the small stripe of bogs in the foreland of the
Alps plays an important role for the carbon balance of Germany. A big part was
drained for peat-use and to get agricultural land in the last centuries. Restoration of
these degraded bogs can help to rebuild this function, whereas the watertable is an
important co-factor for the amount of mitigation of greenhouse gases (CO2, CH4 and
N2O).
To estimate GHG-balances gas-flux measurements, using the chamber method developed
by Drösler (2005) were done in 2007 and 2008 on a degraded bog-meadow, which was partly
rewetted in 1993 and which is still managed in large areas. This mosaic of restored, drained
and managed areas showed big differences in their carbon-balances from a high
source (~Â 500 g CO2-C m-2 a-1) to a moderate sink (~Â -200 g CO2-C m-2
a-1).
Where the management was stopped in 1993, some Sphagnum-communities developed
which helped to turn these areas from moderate sources (47 g CO2-C m-2 a-1) or sinks (-58
g CO2-C m-2 a-1) to permanent sinks with uptakes between (-150 and -250 g CO2-C m-2
a-1).
Key words: bog, carbon-balance, greenhouse gases, restoration, watertable |
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