Change search
ReferencesLink to record
Permanent link

Direct link
Dissolved Inorganic Carbon Export Across the Soil/Stream Interface and Its Fate in a Boreal Headwater Stream
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Show others and affiliations
2009 (English)In: Environmental Science & Technology, Vol. 43, no 19, 7364-7369 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this investigation was to determine the lateral export of dissolved inorganic carbon (DIC) from soils of a Swedish boreal forest to a first order stream and to estimate the partitioning of this DIC into CO2 evasion from the stream surface and the DIC pool exported down through the catchment by streamwater. The groundwater entering the stream was supersaturated with CO2 with values as high as 17 times equilibrium with the atmosphere. Up to 90% of the estimated daily soil DIC export to the stream was emitted to the atmosphere as CO2 within 200 in of the water entering the stream. The annual DIC export from the soil to the stream was estimated to be 3.2 (+/- 0.1) g C m(-2) yr(-1) (normalized to catchment size). Ninety percent of the variation in soil DIC export could be explained by the variation in groundwater discharge and the DIC concentrations per se, were of minor importance. A significant correlation (R-2 = 0.74, P < 0.01) between soil DIC export and CO2 emission from the stream surface suggests that emission dynamics were primarily driven by the export of terrestrial DIC and that in-stream processes were less important Our results reveal that current budget estimates of lateral DIC export from soils to aquatic conduits need to be revised because they do not account for conditions prevailing in headwater streams. Any quantification of lateral stream C export and CO2 emissions from freshwater systems must include headwater streams as well as the lower parts of the aquatic conduit

Place, publisher, year, edition, pages
2009. Vol. 43, no 19, 7364-7369 p.
Keyword [en]
soil respiration, runoff dynamics, dioxide, forest, fluxes, water, catchment, transect, evasion, budget
URN: urn:nbn:se:su:diva-31185ISI: 000270136500035ISBN: 0013-936XOAI: diva2:275734
Available from: 2009-11-06 Created: 2009-11-06 Last updated: 2009-11-09Bibliographically approved

Open Access in DiVA

No full text

Other links

<Go to ISI>://000270136500035

Search in DiVA

By author/editor
Seibert, J.
By organisation
Department of Physical Geography and Quaternary Geology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 17 hits
ReferencesLink to record
Permanent link

Direct link