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Carbon balance assessment of a Belgian winter wheat crop

CarboEurope-IP Meeting – 8-11 October 2007. Carbon balance assessment of a Belgian winter wheat crop. C. Moureaux, A. Debacq, J. Hoyaux, M. Suleau, D. Tourneur, F. Vancutsem, B. Bodson, M. Aubinet. kg C m -2. NPP. CarboEurope-IP Meeting – 8-11 October 2007. Objectives.

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Carbon balance assessment of a Belgian winter wheat crop

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  1. CarboEurope-IP Meeting – 8-11 October 2007 Carbon balance assessment of a Belgian winter wheat crop C. Moureaux, A. Debacq, J. Hoyaux, M. Suleau, D. Tourneur, F. Vancutsem, B. Bodson, M. Aubinet

  2. kg C m-2 NPP CarboEurope-IP Meeting – 8-11 October 2007 Objectives • Carbon balance assessment from measurements carried out at different spatial and temporal scales From 1 November 2004 to 2 August 2005

  3. kg C m-2 NPP 0.85 CarboEurope-IP Meeting – 8-11 October 2007 Results From 1 November 2004 to 2 August 2005

  4. CarboEurope-IP Meeting – 8-11 October 2007 Results • NPP • From plant sampling carried out once a week ears total Leaves and stems Total NPP = 0.85 kg C m-2 Ears NPP = 0.46 kg C m-2 Roots NPP = 0.08 kg C m-2

  5. 0.62 kg C m-2 NPP 0.85 0.95 1.57 CarboEurope-IP Meeting – 8-11 October 2007 Results From 1 November 2004 to 2 August 2005

  6. CarboEurope-IP Meeting – 8-11 October 2007 Results • NEE, TER, GPP • From eddy covariance measurements Grain development Wheat tillering TER NEE Ripening GPP Max GLAI

  7. CarboEurope-IP Meeting – 8-11 October 2007 Results • GPPLS • From leaf scale measurements carried out once a week GPPEC GPPLS Hoyaux et al., submitted to AFM

  8. 0.62 kg C m-2 NPP 0.85 0.95 1.57 CarboEurope-IP Meeting – 8-11 October 2007 0.43 Results From 1 November 2004 to 2 August 2005

  9. CarboEurope-IP Meeting – 8-11 October 2007 Results • Raa • Raa = TER – SR = 0.95 – 0.52 TER Raa SR Dough development

  10. 0.62 kg C m-2 NPP 0.85 0.95 1.57 CarboEurope-IP Meeting – 8-11 October 2007 0.43 0.23 0.29 Results From 1 November 2004 to 2 August 2005

  11. CarboEurope-IP Meeting – 8-11 October 2007 Results • Rh = NEE – NPP • Ra = GPP – NPP • Rab = Ra - Raa TER Ra Rab Rh

  12. 0.62 kg C m-2 NPP 0.85 0.95 1.57 CarboEurope-IP Meeting – 8-11 October 2007 0.43 0.23 0.29 Results Results detailed in : Moureaux et al., submitted to GCB From 1 November 2004 to 2 August 2005

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