Chlorophyll a fluorescence response of Norway spruce needles to the long-term effect of elevated CO2 in relation to their position within the canopy
2001
Marek, M.V. | Sprtova, M. | Urban, O. (Akademie Ved, Brno (Czech Republic). Ustav Krajinne Ekologie). Czech Republic) | Spunda, V.
The long-term impact of elevated CO2 concentration on photosynthetic activity of sun-exposed (E) versus shaded (S) foliage was investigated in a Picea abies stand (age 12 years) after three years of cultivation in adjustable-lamella-domes (ALD)). The pronounced vertical profile of the photosynthetically active radiation (PAR) led to the typical differentiation of the photosynthetic aparatus between the S- and E- needles in the AC-variant estimated from the irradiance-responses of various parameters of the room temperature chlorophyll (Chl) a fluorescence parameters.
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