Articles | Volume 21, issue 7
https://doi.org/10.5194/hess-21-3839-2017
https://doi.org/10.5194/hess-21-3839-2017
Research article
 | 
27 Jul 2017
Research article |  | 27 Jul 2017

Soil water stable isotopes reveal evaporation dynamics at the soil–plant–atmosphere interface of the critical zone

Matthias Sprenger, Doerthe Tetzlaff, and Chris Soulsby

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Short summary
We sampled the isotopic composition in the top 20 cm at four different sites in the Scottish Highlands at 5 cm intervals over 1 year. The relationship between the soil water isotopic fractionation and evapotranspiration showed a hysteresis pattern due to a lag response to onset and offset of the evaporative losses. The isotope data revealed that vegetation had a significant influence on the soil evaporation with evaporation being double from soils beneath Scots pine compared to heather.