Journalartikel

Jahr der Veröffentlichung: 2002

Seiten: 184-189

Zeitschrift: Journal of applied botany = Angewandte Botanik

Bandnummer: 76

Heftnummer: 5-6

ISSN: 0949-5460

Verlag: Blackwell

Abstract: 
Ozone (O-3) phytotoxicity is caused by the O-3 dose absorbed through the stomata. Within the framework of the UNECE ICP Vegetation clover programme a preliminary cumulative critical absorbed dose was derived for the onset of visible injury on the O-3 sensitive NC-S biotype of white clover. Water vapour exchange between clover pots and the atmosphere as well as O-3 exchange was simulated applying the Soil-Vegetation-Atmosphere-Transfer (SVAT) model PLATIN (PLant-ATmosphere INteraction). The parameterisation of stomatal conductance was validated via measured evapotranspiration rates. A critical O-3 load of 300 mg.m(-2) normalised for the effective leaf area unit and accumulated over five consecutive days during daylight hours was derived. Because the level of the critical absorbed dose depends strongly on the parameterisation of non-stomatal deposition, any critical O-3 load may not be realistic, since the value is riot verified by independent experiments and by micrometeorological O-3 flux measurements.

Harvard-Zitierstil: Gavriilidou, M., Grünhage, L. and Jäger, H. (2002) Derivation of a critical absorbed dose of ozone using an ozone-sensitive biotype of white clover, Journal of applied botany = Angewandte Botanik, 76(5-6), pp. 184-189

APA-Zitierstil: Gavriilidou, M., Grünhage, L., & Jäger, H. (2002). Derivation of a critical absorbed dose of ozone using an ozone-sensitive biotype of white clover. Journal of applied botany = Angewandte Botanik. 76(5-6), 184-189.