Dissolved carbon as a component of net biome productivity of major land use systems
Beschreibung:
Atmosphere-based estimates of carbon (C) sequestration in terrestrial ecosystems are larger than land-based estimates, which is attributed to `missing fluxes¿ that are not accounted for in present analysis. The transfer of dissolved organic and inorganic C from terrestrial settings to the hydrosphere through soils might well explain the differences in estimates of C sequestration. However, studies of dissolved C fluxes are almost exclusively from temperate forest ecosystems and non of these studies related dissolved C fluxes to local estimates of C sequestration. Also, little is known about dissolved C export to the hydrosphere from soil under different land use. Our hypotheses are i) export of dissolved C from soils fills the gap between atmosphere-based and land-based estimates of C sequestration; ii) land use modifies fluxes of dissolved C from soils in the order arable land > grassland > deciduous forest > coniferous forest. These hypotheses will be tested by determining fluxes of dissolved C from soils in relation to estimates of net biome productivity of 13 sites of different land use
Ausführendes Institut:
Fachgebiet Bodenkunde Details von Fachgebiet Bodenkunde
Übergeordnete Institution:
Technische Universität Berlin (TUB) Details von (TUB) (Berlin)
Laufzeit:
01. 01. 2005 - 31. 12. 2010
Mitwirkende Institutionen:
- Professur für Bodenkunde und Bodenschutz Details von Professur für Bodenkunde und Bodenschutz
Förderprogramm:
- DFG Einzelförderung Details von DFG Einzelförderung
Fachgebiet:
- Bodenkunde
Forschungszweck:
Grundlagenforschung
Förderer:
- Deutsche Forschungsgemeinschaft (DFG) Details von (DFG)
Träger:
- Deutsche Forschungsgemeinschaft (DFG) Details von DFG