ibclogo XVI International Botanical Congess

Abstract Number: 5293
Poster No. = 2106


ALGORITHMS TO DESCRIBE HYDROCARBON EMISSIONS FROM PLANTS AND THEIR APPLICATIONS


G. Schuh*, A. C. Heiden+, M. Shao+, J. Wildt+, GSF National Research Centre for Environment and Health, Neuherberg, Institut für Biochemische Pflanzenpathologie, Oberschleissheim, Germany, +Research Centre Jülich, Institut für Chemie der Belasteten Atmosphäre, Jülich, Germany


Emissions of volatile organic compounds from sunflower (Helianthus annuus cv. Giganteus), rape (Brassica napus cv. Bronowski), and pine (Pinus sylvestris) were measured in a continuously stirred tank reactor. The emission rates of the main compounds (?-pinene, sabinene, limonene, 1,8-cineole, and ?-caryophyllene) were dependent on temperature as well as on light intensity. The behavior of the terpene emission rates with temperature and light intensity can be described by an algorithm that combines the model for the emissions originating from a pool and its temperature dependence (Tingey et al. 1991, in Trace Gas emissions by Plants, Acad. Press) and the algorithm given by Guenther et al., 1993 (J. Geophys. Res. 98, 12609) after slight modification. A comparison of the different existing algorithms is given, the possibilities and limits of the current algorithms are shown.

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