Decoupling of carbon dioxide and dissolved organic carbon in boreal headwater streams

Sammanfattning

Streams and rivers emit large quantities of carbon dioxide (CO2) to the atmosphere. The sources of this CO2 are in-stream mineralization of organic carbon (OC) and CO2 input via groundwater inflow, but their relative importance is largely unknown. In this study, we quantified the role of in-stream OC mineralization as a source of CO2 in a number of nested boreal headwater streams. The results showed that mineralization of stream OC contributed 3% of CO2 supersaturation at time scales comparable to the estimated water travel times in the streams (

Nyckelord

DOC; CO2; mass balance; water-atmosphere exchange; Riparian flow-concentration Integration Model

Publicerad i

Journal of Geophysical Research: Biogeosciences
2016, volym: 121, nummer: 10, sidor: 2630-2651

SLU författare

• Winterdahl, Mattias

  • Stockholms Universitet

• Wallin, Marcus

  • Uppsala universitet

• Huseby Karlsen, Reinert

  • Uppsala universitet

• Laudon, Hjalmar

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

• Öquist, Mats

  • Institutionen för skogens ekologi och skötsel, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Future Forests

UKÄ forskningsämne

Skogsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1002/2016JG003420

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/78126