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Forskningsartikel2011Vetenskapligt granskadÖppen tillgång

Simulating dissolved organic carbon dynamics at the Swedish Integrated Monitoring sites with the Integrated Catchments Model for Carbon, INCA-C

Futter, Martyn; Löfgren, Stefan; Köhler, Stephan; Lundin, Lars; Bringmark, Lage; Moldan, Filip

Sammanfattning

Surface water concentrations of dissolved organic carbon ([DOC]) are changing throughout the northern hemisphere due to changes in climate, land use and acid deposition. However, the relative importance of these drivers is unclear. Here, we use the Integrated Catchments model for Carbon (INCA-C) to simulate long-term (1996-2008) streamwater [DOC] at the four Swedish integrated monitoring (IM) sites. These are unmanaged headwater catchments with old-growth forests and no major changes in land use. Daily, seasonal and long-term variations in streamwater [DOC] driven by runoff, seasonal temperature and atmospheric sulfate (SO4 2-) deposition were observed at all sites. Using INCA-C, it was possible to reproduce observed patterns of variability in streamwater [DOC] at the four IM sites. Runoff was found to be the main short-term control on [DOC]. Seasonal patterns in [DOC] were controlled primarily by soil temperature. Measured SO4 2- deposition explained some of the long-term [DOC] variability at all sites.

Nyckelord

Dissolved organic carbon; INCA; Integrated Monitoring; Forest biogeochemistry

Publicerad i

AMBIO: A Journal of the Human Environment
2011, volym: 40, nummer: 8, sidor: 906-919

SLU författare

Associerade SLU-program

Sjöar och vattendrag
Skog
Klimat
Försurning
Använder FOMA data

UKÄ forskningsämne

Miljövetenskap
Geokemi
Fisk- och akvakulturforskning

Publikationens identifierare

  • DOI: https://doi.org/10.1007/s13280-011-0203-z

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/39224