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Variation in leaf conductance of silver birch: effects of irradiance, vapour pressure deficit, leaf water status and position within a crown



Variation in leaf conductance of silver birch: effects of irradiance, vapour pressure deficit, leaf water status and position within a crown



Forest Ecology and Management 206(1/3): 153-166



Responses of leaf conductance (gL) to variation in photosynthetic photon flux density (QP), leaf-to-air vapour pressure difference (VPD), bulk leaf water potential ( Psi x) and soil to leaf hydraulic conductance (GT) were studied in silver birch (Betula pendula Roth) foliage with respect to leaf position within the canopy. The upper canopy leaves demonstrated 2.0-2.4 times higher (P<0.001) daily maxima of gL as compared to the lower-canopy leaves growing in the shadow of upper branches.

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Accession: 004381518

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DOI: 10.1016/j.foreco.2004.10.059


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