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Implications of climate change for the stomatal flux of ozone: A case study for winter wheat

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JournalEnvironmental Pollution
DatePublished - Apr 2007
Issue number3
Volume146
Number of pages8
Pages (from-to)763-770
Original languageEnglish

Abstract

Climate change factors such as elevated CO2 concentrations, warming and changes in precipitation affect the stomatal flux of ozone (O-3) into leaves directly or indirectly by altering the stomatal conductance, atmospheric O-3 concentrations, frequency and extent of pollution episodes and length of the growing season. Results of a case study for winter wheat indicate that in a future climate the exceedance of the flux-based critical level of O-3 might be reduced across Europe, even when taking into account an increase in tropospheric background O-3 concentration. In contrast, the exceedance of the concentration-based critical level of O-3 will increase with the projected increase in tropospheric background O-3 concentration. The influence of climate change should be considered when predicting the future effects of O-3 on vegetation. There is a clear need for multi-factorial, open-air experiments to provide more realistic information for O-3 flux-effect modelling in a future climate. (c) 2006 Elsevier Ltd. All rights reserved.

    Research areas

  • ozone, climate change, stomatal ozone flux, AOT40, winter wheat, ELEVATED CO2 CONCENTRATION, CARBON-DIOXIDE, SURFACE OZONE, ANTIOXIDANT ENZYMES, DEPOSITION MODULE, ATMOSPHERIC CO2, PHOTOSYNTHESIS, RESPONSES, GROWTH, YIELD

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