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This work reports the ecophysiological and emission data obtained during the BEMA campaigns held at Burriana on orange groves which which highlight one of the factors controlling type and amount of biogenic emissions. The understanding of controls is needed for modelling biogenic emissions at different scales. In particular this factor is related to the leaf/canopy level and can be synthesized in the low photosynthetic performance that seems to characterize the species. Moreover, the low transpiration rate may influence the leaf temperature and related processes. In general, a low E/A ratio, ie, emission rates per assimilation rates, for citrus are related to an efficient control of leaf transpiration notwithstanding the periodical flooding of the orange grove that kept the soil in a good water condition. The relationships between ecophysical results and terpenoid emissions are also discussed.

Additional information

Authors: EI, ;JRC-ISPRA (IT),
Bibliographic Reference: Paper presented: European Geophysical Society XXIII , Nice (FR), 20-24th April (1999)
Availability: Available free of charge from Public Relations and Publications Unit, Ispra (IT)
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