TP1-2: Carbon assimilation and respiration

The influence of agroforestry on carbon assimilation and respiration

Summary

The Bioclimatology group of the University of Goettingen investigates carbon, water vapour and energy fluxes in agroforestry systems. Agroforestry systems have potential for improving the use of water, light, and nutrient resources while preserving or enhancing essential properties of agricultural systems. This includes sustainable management of fertile soils and limiting soil erosion. Also there is a potential for higher carbon assimilation, which would be beneficial for adapting to climate change.

We will assess the impact of introducing trees into agricultural systems on carbon, water vapour and energy fluxes, radiation, wind field and microclimate. Ten meteorological and turbulence measurement towers are deployed across Germany. We will use eddy-covariance measurements in combination with CO2 and water vapour measurements to quantify carbon assimilation or respiration, evapotranspiration and water use efficiency. Finally, our findings from measurements to evaluate potential benefits of agroforestry systems over conventional agriculture.

Our objectives are:

  • To assess the net ecosystem exchange of carbon in agroforestry compared to conventional agriculture.
  • To assess and compare the water use efficiency of both systems by using the carbon and water vapour fluxes.
  • To assess the soil carbon balance of agroforestry compared to conventional agriculture.
  • To assess the impact of management practices on the carbon flux.

 

Contact

Prof. Dr. Alexander Knohl

University of Göttingen, Bioclimatology
Büsgenweg 2, 37077 Göttingen, Germany

Phone: +49 (0)551 39 33683
Fax: +49 (0)551 39 9619
Email: aknohl@uni-goettingen.de

Dr. Lukas Siebicke

University of Göttingen, Bioclimatology
Büsgenweg 2, 37077 Göttingen, Germany

Phone: +49 (0)551 39 8100
Fax: +49 (0)551 39 9619
Email: Lukas.Siebicke@forst.uni-goettingen.de

Justus van Ramshorst

University of Göttingen, Bioclimatology
Büsgenweg 2, 37077 Göttingen, Germany

Tel.: +49 551 39 12114
Fax: +49 551 39 9619
justus.vanramshorst@uni-goettingen.de