Analysis of vertical ozone and nitrogen oxides profiles in aPrunus cerasifera canopy |
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| Authors: | Giacomo Lorenzini Cristina Nali |
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| Affiliation: | (1) Dipartimento di Coltivazione e Difesa Specie Legnose, Sez. Patologia Vegetale, Università, 56124 Pisa, Italy |
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| Abstract: | An automatic system was installed for continuous analyses of ozone, sulphur dioxide, nitrogen monoxide and nitrogen dioxide in an experimental orchard with a canopy ofPrunus cerasifera plants in summer 1993. Air samples from three elevations (0.8 m, 1.6 m and 3 m above ground) were sequentially analyzed. Ozone concentrations above the canopy were usually higher than within the canopy; their relationships with stomatal resistance have been investigated. Sulphur dioxide levels were negligible. Nitrogen oxides showed a complex profile, with no particular trend, likely due to a reciprocal exchange between the atmosphere and the ground surface. |
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| Keywords: | Air pollution Dry deposition Correlation with meteorological data Stomatal resistance Vegetation as sink for air pollutants |
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