Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 2
Articles | Volume 30, issue 2
https://doi.org/10.5194/hess-30-317-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-317-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 2
Research article
 | 
23 Jan 2026
Research article |  | 23 Jan 2026

Insights into evapotranspiration partitioning based on hydrological observations using the generalized proportionality hypothesis

Amin Hassan, Iain Colin Prentice, and Xu Liang

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Short summary
Evapotranspiration is evaporation that occurs from plants, soil, and water bodies, but determining these components is difficult. We developed a new method that uses measurements such as streamflow and rainfall to determine the portion of plant evaporation. We found differences among vegetation types and climate conditions, and showed that plant water use peaks in moderately dry regions. The results improve understanding of plant-water interactions and can help improve water and climate models.
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