After sapwood width was determined, every probe were re-implanted at depths of 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, and 40 mm into the xylem of this sample tree (between June 1st and June 11th 2011) in order to investigate the radial profile of sap flux density in the tree, and to confirm the probe-inserted depth for
accurate estimates of whole-tree water use.