Partitioning evapotranspiration fluxes into soil evaporation and plant transpiration using water stable isotopes under controlled conditions

Rothfuss, Youri; Biron, Philippe; Braud, Isabelle; Canale, Laurent; Durand, J. L.; Gaudet, Jean‐Paul; Richard, Patricia; Vauclin, Michel; Bariac, Thierry

doi:10.1002/hyp.7743

Cited by 124 publications

(144 citation statements)

References 68 publications

(99 reference statements)

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“…Similarly, the water oxygen and hydrogen isotope composition has been used as natural or artificial tracer of the ecosystem and component water fluxes and to partition evaporation and transpiration (e.g. Yakir and Wang, 1996;Yepez et al, 2005Yepez et al, , 2007Williams et al, 2004;Lai et al, 2006;Rothfuss et al, 2010;Wang et al, 2010;Kim and Lee, 2011) to assess ecosystem water use efficiency (WUE) (Ponton et al, 2006) and, e.g. the effects of hydraulic redistribution by roots and mycorrhiza (e.g.…”

Section: Recent Findings On Component Sources and Fluxesmentioning

confidence: 99%

Progress and challenges in using stable isotopes to trace plant carbon and water relations across scales

et al. 2012

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Abstract. Stable isotope analysis is a powerful tool for assessing plant carbon and water relations and their impact on biogeochemical processes at different scales. Our processbased understanding of stable isotope signals, as well as technological developments, has progressed significantly, opening new frontiers in ecological and interdisciplinary research. This has promoted the broad utilisation of carbon, oxygen and hydrogen isotope applications to gain insight into plant carbon and water cycling and their interaction with the atmosphere and pedosphere. Here, we highlight specific areas of recent progress and new research challenges in plant carbon and water relations, using selected examples covering scales from the leaf to the regional scale. Further, we discuss strengths and limitations of recent technological Published by Copernicus Publications on behalf of the European Geosciences Union. C. Werner et al.: Progress and challenges in using stable isotopesdevelopments and approaches and highlight new opportunities arising from unprecedented temporal and spatial resolution of stable isotope measurements.

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Section: Recent Findings On Component Sources and Fluxesmentioning

confidence: 99%

Progress and challenges in using stable isotopes to trace plant carbon and water relations across scales

et al. 2012

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“…The reason for using these tracers is that they are chemically and biologically stable and show no isotopic fractionation during water uptake by roots (Ehleringer and Dawson, 1992;Kendall and McDonnell, 1998;Tang and Feng, 2001;Yepez et al, 2003;Williams et al, 2004;Balazs et al, 2006;Koeniger et al, 2010). Moreover, partition of the evaporation fluxes using isotopes has many advantages compared with other methods such as lysimeter measurements, sapflow measurements, remote sensing information, and micrometeorological techniques, since these methods have several limitations (Xu et al, 2008;Rothfuss et al, 2010). …”

Section: Introductionmentioning

confidence: 99%

“…In the last decade, partitioning of total evaporation into soil evaporation and transpiration using stable isotopes was studied by Yepez et al (2003Yepez et al ( , 2005; Williams et al (2004); Robertson and Gazis (2006); Xu et al (2008); Rothfuss et al (2010); Wang et al (2010Wang et al ( , 2012a; Wenninger et al (2010); Zhang et al (2010Zhang et al ( , 2011. Williams et al (2004) used the combination of eddy covariance, sapflow, and stable isotope measurements in an irrigated olive orchard, in Morocco.…”

Section: Introductionmentioning

confidence: 99%

Partitioning of evaporation into transpiration, soil evaporation and interception: a comparison between isotope measurements and a HYDRUS-1D model

Sutanto

Wenninger

Coenders-Gerrits

et al. 2012

Hydrol. Earth Syst. Sci.

180

117

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Abstract. Knowledge of the water fluxes within the soilvegetation-atmosphere system is crucial to improve water use efficiency in irrigated land. Many studies have tried to quantify these fluxes, but they encountered difficulties in quantifying the relative contribution of evaporation and transpiration. In this study, we compared three different methods to estimate evaporation fluxes during simulated summer conditions in a grass-covered lysimeter in the laboratory. Only two of these methods can be used to partition total evaporation into transpiration, soil evaporation and interception. A water balance calculation (whereby rainfall, soil moisture and percolation were measured) was used for comparison as a benchmark. A HYDRUS-1D model and isotope measurements were used for the partitioning of total evaporation. The isotope mass balance method partitions total evaporation of 3.4 mm d −1 into 0.4 mm d −1 for soil evaporation, 0.3 mm d −1 for interception and 2.6 mm d −1 for transpiration, while the HYDRUS-1D partitions total evaporation of 3.7 mm d −1 into 1 mm d −1 for soil evaporation, 0.3 mm d −1 for interception and 2.3 mm d −1 for transpiration. From the comparison, we concluded that the isotope mass balance is better for low temporal resolution analysis than the HYDRUS-1D. On the other hand, HYDRUS-1D is better for high temporal resolution analysis than the isotope mass balance.

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“…evapotranspiration partitioning (Hsieh et al, 1998a;Wang and Yakir, 2000;Yepez et al, 2005;Rothfuss et al, 2010); hydraulic lift (Dawson, 1993(Dawson, , 1996Schulze et al, 1998); and sources of plant water uptake (White et al, 1985;Dawson and Ehleringer, 1991;Walker and Richardson, 1991;Thorburn et al, 1992).…”

Section: T H M Volkmann and M Weiler: Pore Water Stable Isotopesmentioning

confidence: 99%

Continual in situ monitoring of pore water stable isotopes in the subsurface

Volkmann

Weiler

2014

Hydrol. Earth Syst. Sci.

113

129

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Abstract. Stable isotope signatures provide an integral fingerprint of origin, flow paths, transport processes, and residence times of water in the environment. However, the full potential of stable isotopes to quantitatively characterize subsurface water dynamics is yet unfolded due to the difficulty in obtaining extensive, detailed, and repeated measurements of pore water in the unsaturated and saturated zone. This paper presents a functional and cost-efficient system for nondestructive continual in situ monitoring of pore water stable isotope signatures with high resolution. Automatic controllable valve arrays are used to continuously extract diluted water vapor in soil air via a branching network of small microporous probes into a commercial laser-based isotope analyzer. Normalized liquid-phase isotope signatures are then obtained based on a specific on-site calibration approach along with basic corrections for instrument bias and temperature dependent isotopic fractionation. The system was applied to sample depth profiles on three experimental plots with varied vegetation cover in southwest Germany. Two methods (i.e., based on advective versus diffusive vapor extraction) and two modes of sampling (i.e., using multiple permanently installed probes versus a single repeatedly inserted probe) were tested and compared. The results show that the isotope distribution along natural profiles could be resolved with sufficiently high accuracy and precision at sampling intervals of less than four minutes. The presented in situ approaches may thereby be used interchangeably with each other and with concurrent laboratory-based direct equilibration measurements of destructively collected samples. It is thus found that the introduced sampling techniques provide powerful tools towards a detailed quantitative understanding of dynamic and heterogeneous shallow subsurface and vadose zone processes.

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Partitioning evapotranspiration fluxes into soil evaporation and plant transpiration using water stable isotopes under controlled conditions

Cited by 124 publications

References 68 publications

Progress and challenges in using stable isotopes to trace plant carbon and water relations across scales

Progress and challenges in using stable isotopes to trace plant carbon and water relations across scales

Partitioning of evaporation into transpiration, soil evaporation and interception: a comparison between isotope measurements and a HYDRUS-1D model

Continual in situ monitoring of pore water stable isotopes in the subsurface

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