Is the subarctic landscape still a carbon sink?: Evidence from a detailed catchment balance
2016 (English)In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, no 5, 1988-1995 p.Article in journal (Refereed) PublishedText
Climate warming raises the question whether high-latitude landscape still function as net carbon (C) sinks. By compiling an integrated C balance for an intensely studied subarctic catchment, we show that this catchment's C balance is not likely to be a strong current sink of C, a commonly held assumption. In fact, it is more plausible (71% probability) that the studied catchment functions as a C source (-1120gCm(-2)yr(-1)). Analyses of individual fluxes indicate that soil and aquatic C losses offset C sequestering in other landscape components (e.g., peatlands and aboveground forest biomass). Our results stress the importance of fully integrated catchment C balance estimates and highlight the importance of upland soils and their interaction with the aquatic network for the catchment C balance.
Place, publisher, year, edition, pages
American Geophysical Union (AGU), 2016. Vol. 43, no 5, 1988-1995 p.
carbon balance, subarctic, sink, source, aquatic ecosystems, terrestrial ecosystems
Geology Environmental Sciences
IdentifiersURN: urn:nbn:se:umu:diva-119659DOI: 10.1002/2015GL066970ISI: 000373109800025OAI: oai:DiVA.org:umu-119659DiVA: diva2:925116