References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-8-397-2008

Past and future scenarios of the effect of carbon dioxide on plant growth and transpiration for three vegetation types of southwestern France

Calvet

J.-C.

¹ Gibelin

A.-L.

¹ Roujean

J.-L.

¹ Martin

¹ Le Moigne

¹ Douville

¹ Noilhan

CNRM/GAME (Météo-France, CNRS), Toulouse, France

29 01 2008

8 2 397 406

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The sensitivity of an operational CO2-responsive land surface model (the ISBA-A-gs model of Météo-France) to the atmospheric CO2 concentration, (CO2), is investigated for 3 vegetation types (winter wheat, irrigated maize, coniferous forest). Past (1960) and future (2050) scenarios of (CO2) corresponding to 320 ppm and 550 ppm, respectively, are explored. The sensitivity study is performed for 4 annual cycles presenting contrasting conditions of precipitation regime and air temperature, based on continuous measurements performed on the SMOSREX site near Toulouse, in southwestern France. A significant CO2-driven reduction of canopy conductance is simulated for the irrigated maize and the coniferous forest. The reduction is particularly large for maize, from 2000 to 2050 (−18%), and triggers a drop in optimum irrigation (−30 mm y−1). In the case of wheat, the response is more complex, with an equal occurrence of enhanced or reduced canopy conductance.

References 1

Agreste, http://www.agreste.agriculture.gouv.fr, last access: September~2007, 2007.

Bondeau, A., Smith, P. C., Zaehle, S., Schaphoff, S., Lucht, W., et al.: Modelling the role of agriculture for the 20th century global terrestrial carbon balance, Global Change Biol., 13(3), 679–706, 2007.

Berbigier, P., Bonnefond, J. M., and Mellmann, P.: CO2 and water vapour fluxes for 2 years above Euroflux forest site, Agric. For. Meteorol., 108, 183–197, 2001.

Brooks, T. J., Wall, G. W., Pinter Jr., P. J., Kimball, B. A., LaMorte, R. L., et al.: Acclimation response of spring wheat in a free-air CO2 enrichment (FACE) atmosphere with variable soil nitrogen regimes, 3. Canopy architecture and gas exchange, Photosynth. Res., 66, 97–108, 2000.

Calvet, J.-C., Noilhan, J., Roujean, J.-L., Bessemoulin, P., Cabelguenne, M., Olioso, A., and Wigneron, J.-P.: An interactive vegetation SVAT model tested against data from six contrasting sites, Agric. For. Meteorol., 92, 73–95, 1998.

Calvet, J.-C. and Soussana, J.-F.: Modelling CO2-enrichment effects using an interactive vegetation SVAT scheme, Agric. For. Meteorol., 108(2), 129–152, 2001.

Calvet, J.-C., Rivalland, V., Picon-Cochard, C., and Guehl, J.-M.: Modelling forest transpiration and CO2 fluxes – response to soil moisture stress, Agric. For. Meteorol., 124(3–4), 143–156, doi:10.1016/j.agrformet.2004.01.007, 2004.

Cannell, M. G. R.: Relative importance of increasing atmospheric CO2, N deposition and temperature in promoting European forest growth, in: Causes and consequences of accelerating tree growth in Europe, EFI Proceedings, vol. 27, edited by: Karjalainen, T., Spiecker, H., and Laroussinie, O., 25–41, European Forest Institute, Helsinki, 1999.

Debaeke, P., Bertrand, M., and Gary, C.: Sensibilité à la sécheresse des systèmes de culture, in Sécheresse et agriculture, edited by: Amigues, J. P., Debaeke, P., Itier, B., Lemaire, G., Seguin, B., Tardieu, F., Thomas, A., INRA, 2006.

De Rosnay, P., Calvet, J.-C., Kerr, Y., Wigneron, J. P., Lemaître, F., et al.: SMOSREX: A long term field campaign experiment for soil moisture and land surface processes remote sensing, Remote Sens. Env., 102(3–4), 377–389, 2006.

Dolman, A. J., Moors, E. J., and Elbers, J. A.: The carbon uptake of a mid latitude pine forest growing on sandy soil, Agric. For. Meteorol., 111, 157–170, 2002.

Dolman, H., Noilhan, J., Durand, P., Sarrat, C., Brut, A., et al.: CERES, the Carboeurope Regional Experiment Strategy in Les Landes, SW France, Bull. Am. Meteorol. Soc., 87(10), 1367–1379, doi:10.1175/BAMS-87-10-1367, 2006.

Douville, H., Planton, S., Royer, J.-F., Stephenson, D. B., Tyteca, S., Kergoat, L., Lafont, S., and Betts, R. A.: Importance of vegetation feedbacks in doubled- CO2 climate experiments, J. Geophys. Res., 105(D11), 14 841–14 861, 2000.

Field, C., Jackson, R., and Mooney, H.: Stomatal responses to increased CO2: implications from the plant to the global-scale, Plant Cell Environ., 18, 1214–1255, 1995.

Fung, I. Y., Doney, S. C., Lindsay, K., and John, J.: Evolution of carbon sinks in a changing climate, Proc. Natl. Acad. Sci., 102, 11 201–11 206, 2005.

Gedney, N., Cox, P. M., Betts, R. A., Boucher, O., Huntingford, C., and Stott, P. A.: Detection of a direct carbon dioxide effect in continental river runoff records, Nature, 439, 835–838, doi:10.1038/nature04504, 2006.

Gibelin, A.-L., Calvet, J.-C., Roujean, J.-L., Jarlan, L., and Los, S.: Ability of the land surface model ISBA-A-gs to simulate leaf area index at the global scale: comparison with satellites products, J. Geophys. Res., 111, D18102, doi:10.1029/2005JD006691, 2006.

Keeling, C. D., Chin, J. F. S., and Whorf, T. P.: Increased activity of northern vegetation inferred from atmospheric CO2 measurements, Nature, 382, 146–149, doi:10.1038/382146a0, 1996.

Long, S. P., Ainsworth, E. A., Leakey, A. D. B., Nösberger, J., and Ort, D. R.: Food for thought: Lower-than-expected crop yield stimulation with rising CO2 concentrations, Science, 312, 1918–1921, 2006.

Martin, E., Le Moigne, P., Masson, V., et al.: Le code de surface externalisé SURFEX de Météo- France, Ateliers de Modélisation de l'Atmosphère (http://www.cnrm.meteo.fr/ama2007/), Toulouse, 16–18~January, 2007.

Muñoz Sabater, J., Jarlan, L., Calvet, J.-C., Bouyssel, F., and De Rosnay, P.: From near-surface to root-zone soil moisture using different assimilation techniques, J. Hydrometeorol., 8(2), 194–206, 2007.

Piao, S., Friedlingstein, P., Ciais, P., Zhou, L., and Chen, A.: Effect of climate and CO2 changes on the greening of the northern hemisphere over the past two decades, Geophys. Res. Lett., 33, L23402, doi:10.1029/2006GL028205, 2006.

Rivalland, V., Calvet, J.-C., Berbigier, P., Brunet, Y., and Granier, A.: Transpiration and CO2 fluxes of a pine forest: modelling the undergrowth effect, Ann. Geophys., 23, 291–304, 2005.

Roderick, M. L., Berry, S. L., and Noble, I. R.: The relationship between leaf composition and morphology at elevated CO2 concentrations, New Phytol., 143, 63–72, 1999.

Teyssier, F.: Consommations d'eau pour irrigation sur 2001–2005 en Midi-Pyrénées, Agreste Midi-Pyrénées, Données, 35, http://agreste.agriculture.gouv.fr/IMG/pdf/R7306A09.pdf, 2006.

Viovy, N.: PILPS carbon first experiment, http://www.lsce.cnrs-gif.fr/cb/carbone/pilpsc1/, 2003.

Yin, X.: Responses of leaf nitrogen concentration and specific leaf area to atmospheric CO2 enrichment: a retrospective synthesis across 62 species, Global Change Biol., 8(7), 631–642, 2002.