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| Titel |
The relationship between subsurface hydrology and dissolved carbon fluxes for a sub-arctic catchment |
| VerfasserIn |
S. W. Lyon, M. Mörth, C. Humborg, R. Giesler, G. Destouni |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 14, no. 6 ; Nr. 14, no. 6 (2010-06-15), S.941-950 |
| Datensatznummer |
250012334
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| Publikation (Nr.) |
 copernicus.org/hess-14-941-2010.pdf |
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| Zusammenfassung |
| In recent years, there has been increased interest in carbon cycling in
natural systems due to its role in a changing climate. Northern latitude
systems are especially important as they may serve as a potentially large
source or sink of terrestrial carbon. There are, however, a limited number
of investigations reporting on actual flux rates of carbon moving from the
subsurface landscape to surface water systems in northern latitudes. In this
study, we determined dissolved organic carbon (DOC) and dissolved inorganic
carbon (DIC) fluxes from the subsurface landscape for a sub-arctic catchment
located in northern Sweden. These are based on observed annual flux-averaged
concentrations of DOC and DIC for the 566 km2 Abiskojokken catchment.
We demonstrate the importance to correctly represent the spatial
distribution of the advective solute travel times along the various flow and
transport pathways. The fluxes of DOC and DIC from the subsurface landscape
to the surface water system were comparable in magnitude. This balance could
shift under future climatic changes that influence the hydrological and
biogeochemical system. |
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