Why do we still need to derive ozone critical levels for vegetation protection?

Alessandra De Marco and Pierre Sicard
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Alessandra De Marco: Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Italy
Pierre Sicard: ARGANS, France

International Journal of Environmental Sciences & Natural Resources, 2019, vol. 21, issue 5, 164-166

Abstract: The tropospheric ozone levels (O3) are considered high enough over large regions of the globe to damage vegetation. To protect vegetation, current European standards use the O3 exposure index AOT40, i.e. the cumulative exposure to O3 hourly concentrations exceeding 40ppb over the daylight hours of the growing season. The biologically-sound stomatal flux-based standard (PODY) is under discussion as new European legislative standard although critical levels for vegetation protection still need to be validated. Epidemiological observation of O3–induced injury and environmental variables, including O3, can be used to derive consistent stomatal flux-based critical levels for different type of vegetation protection against O3 under natural field conditions. The question about deriving significant critical level is still a challenge for the scientific community.

Keywords: earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals; juniper publishers reivew (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:adp:ijesnr:v:21:y:2019:i:5:p:164-166

DOI: 10.19080/IJESNR.2019.21.556073

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