Articles | Volume 23, issue 4
https://doi.org/10.5194/hess-23-2077-2019
https://doi.org/10.5194/hess-23-2077-2019
Research article
 | 
25 Apr 2019
Research article |  | 25 Apr 2019

Does the Normalized Difference Vegetation Index explain spatial and temporal variability in sap velocity in temperate forest ecosystems?

Anne J. Hoek van Dijke, Kaniska Mallick, Adriaan J. Teuling, Martin Schlerf, Miriam Machwitz, Sibylle K. Hassler, Theresa Blume, and Martin Herold

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ED: Publish subject to minor revisions (further review by editor) (21 Mar 2019) by Patricia Saco
AR by Anne Hoek van Dijke on behalf of the Authors (29 Mar 2019)  Author's response    Manuscript
ED: Publish as is (03 Apr 2019) by Patricia Saco
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Short summary
Satellite images are often used to estimate land water fluxes over a larger area. In this study, we investigate the link between a well-known vegetation index derived from satellite data and sap velocity, in a temperate forest in Luxembourg. We show that the link between the vegetation index and transpiration is not constant. Therefore we suggest that the use of vegetation indices to predict transpiration should be limited to ecosystems and scales where the link has been confirmed.