Project

Quantification of below-ground respiration and investigation of the fate of dissolved root-derived CO2 in trees

Code
01SB1210
Duration
01 January 2010 → 31 October 2012
Funding
Regional and community funding: Special Research Fund
Research disciplines
  • Natural sciences
    • General biology
    • Plant biology
Keywords
co2 efflux carbon cycle water transport model respiration dissolved inorganic carbon allocation sap flow dissolved inorganic carbon forest roots
 
Project description

In addition to dispersing into the soils and out into the atmosphere, CO2 produced by tree roots can travel up the stem. The presence of this newfound pathway suggest that scientist have underestimated the actual respiration rates of below-ground plant tissues. In this project we aim at more fully understand this process. We will therefore quantify the belowground respiration in different tree species by measuring both internal (in the xylem sap) and external (from the soil) CO2 fluxes at annual time-scale and we will investigate the fate of root-respired CO2 using 13C labeling.