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@ARTICLE{Meunier:837567,
author = {Meunier, Félicien and Rothfuss, Youri and Bariac, Thierry
and Biron, Philippe and Richard, Patricia and Durand,
Jean-Louis and Couvreur, Valentin and Vanderborght, Jan and
Javaux, Mathieu},
title = {{M}easuring and {M}odeling {H}ydraulic {L}ift of {U}sing
{S}table {W}ater {I}sotopes},
journal = {Vadose zone journal},
volume = {},
number = {},
issn = {1539-1663},
address = {Madison, Wis.},
publisher = {SSSA},
reportid = {FZJ-2017-06455},
pages = {},
year = {2017},
abstract = {This study tested a method to quantify and locate hydraulic
lift (HL, defined as the passive upward water flow from
wetter to dryer soil zones through the plant root system) by
combining an experiment using the stable water isotope 1H2
18O as a tracer with a soil–plant water flow model. Our
methodology consisted in (i) establishing the initial
conditions for HL in a large rhizobox planted with Italian
ryegrass (Lolium multiflorum Lam.), (ii) labeling water in
the deepest soil layer with an 18O-enriched solution, (iii)
monitoring the water O isotopic composition in soil layers
to find out changes in the upper layers that would reflect
redistribution of 18O-enriched water from the bottom layers
by the roots, and (iv) comparing the observed soil water O
isotopic composition to simulation results of a
three-dimensional model of water flow and isotope transport
in the soil–root system. Our main findings were that (i)
the depth and strength of the observed changes in soil water
O isotopic composition could be well reproduced with a
modeling approach (RMSE = 0.2‰, i.e., equivalent to the
precision of the isotopic measurements), (ii) the
corresponding water volume involved in HL was estimated to
account for $19\%$ of the plant transpiration of the
following day, i.e., 0.45 mm of water, and was in agreement
with the observed soil water content changes, and (iii) the
magnitude of the simulated HL was sensitive to both plant
and soil hydraulic properties.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000425218400004},
doi = {10.2136/vzj2016.12.0134},
url = {https://juser.fz-juelich.de/record/837567},
}