Figure 1
From: Origin and hydrodynamics of xylem sap in tree stems, and relationship to root uptake of soil water
Changes in δD values (‰) in the soil water, sapwood sap, and heartwood sap of sugi and konara trees over 400 days after the start of the D2O tracer test on 12 March 2015 in the Utsunomiya University Forest. (a) δD values (‰) of sugi xylem sap (sapwood of trees S1, S2, and S3, and heartwood sap of tree S2), (b) δD values (‰) of soil water (at depths of 20, 50, 100, 150, and 200 cm) at the sugi site, (c) δD values (‰) of konara xylem sap (sapwood of trees K1, K2, and K3 and heartwood sap of tree K2), (d) δD values (‰) of soil water (at depths of 20, 50, 100, 150, and 200 cm) at the konara site. Note that the y-axis scales differ greatly in (b) and (d).
