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On the progressive enrichment of the oxygen isotopic composition of water along a leaf

Gan, K; Farquhar, Graham


A model has been derived for the enrichment of heavy isotopes of water in leaves, including progressive enrichment along the leaf. In the model, lighter water is preferentially transpired leaving heavier water to diffuse back into the xylem and be carried further along the leaf. For this pattern to be pronounced, the ratio of advection to diffusion (Péclet number) has to be large in the longitudinal direction, and small in the radial direction. The progressive enrichment along the xylem is less...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Plant Cell and Environment


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