Articles | Volume 27, issue 15
https://doi.org/10.5194/hess-27-2899-2023
https://doi.org/10.5194/hess-27-2899-2023
Research article
 | 
02 Aug 2023
Research article |  | 02 Aug 2023

Throughfall spatial patterns translate into spatial patterns of soil moisture dynamics – empirical evidence

Christine Fischer-Bedtke, Johanna Clara Metzger, Gökben Demir, Thomas Wutzler, and Anke Hildebrandt

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Cited articles

André, F., Jonard, M., Jonard, F., and Ponette, Q.: Spatial and temporal patterns of throughfall volume in a deciduous mixed-species stand, J. Hydrol., 400, 244–254, https://doi.org/10.1016/j.jhydrol.2011.01.037, 2011. 
Aussenac, G.: Action du couvert forestier sur la distribution au sol des précipitations, Ann. Sci. Forest., 27, 383–399, https://doi.org/10.1051/forest/19700403, 1970. 
Bachmair, S., Weiler, M., and Troch, P. A.: Intercomparing hillslope hydrological dynamics: Spatio-temporal variability and vegetation cover effects, Water Resour. Res., 48, 1–18, https://doi.org/10.1029/2011WR011196, 2012. 
Baram, S., Kurtzman, D., and Dahan, O.: Water percolation through a clayey vadose zone, J. Hydrol., 424–425, 165–171, https://doi.org/10.1016/j.jhydrol.2011.12.040, 2012. 
Bárdossy, A. and Kundzewicz, Z. W.: Geostatistical methods for detection of outliers in groundwater quality spatial fields, J. Hydrol., 115, 343–359, https://doi.org/10.1016/0022-1694(90)90213-H, 1990. 
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Short summary
Canopies change how rain reaches the soil: some spots receive more and others less water. It has long been debated whether this also leads to locally wetter and drier soil. We checked this using measurements of canopy drip and soil moisture. We found that the increase in soil water content after rain was aligned with canopy drip. Independently, the soil storage reaction was dampened in locations prone to drainage, like hig-macroporosity areas, suggesting that canopy drip enhances bypass flow.
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