Articles | Volume 25, issue 9
https://doi.org/10.5194/hess-25-4861-2021
https://doi.org/10.5194/hess-25-4861-2021
Research article
 | 
07 Sep 2021
Research article |  | 07 Sep 2021

Structural changes to forests during regeneration affect water flux partitioning, water ages and hydrological connectivity: Insights from tracer-aided ecohydrological modelling

Aaron J. Neill, Christian Birkel, Marco P. Maneta, Doerthe Tetzlaff, and Chris Soulsby

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Cited articles

Aerts, R., Bakker, C., and De Caluwe, H.: Root turnover as determinant of the cycling of C, N, and P in a dry heathland ecosystem, Biogeochemistry, 15, 175–190, https://doi.org/10.1007/BF00002935, 1992. 
Ala-aho, P., Soulsby, C., Wang, H., and Tetzlaff, D.: Integrated surface-subsurface model to investigate the role of groundwater in headwater catchment runoff generation: A minimalist approach to parameterisation, J. Hydrol., 547, 664–677, https://doi.org/10.1016/j.jhydrol.2017.02.023, 2017. 
Alila, Y., Kuraś, P. K., Schnorbus, M., and Hudson, R.: Forests and floods: A new paradigm sheds light on age-old controversies, Water Resour. Res., 45, W08416, https://doi.org/10.1029/2008WR007207, 2009. 
Allen, S. T., Kirchner, J. W., Braun, S., Siegwolf, R. T. W., and Goldsmith, G. R.: Seasonal origins of soil water used by trees, Hydrol. Earth Syst. Sci., 23, 1199–1210, https://doi.org/10.5194/hess-23-1199-2019, 2019. 
Archer, N. A. L., Bonell, M., Coles, N., MacDonald, A. M., Auton, C. A., and Stevenson, R.: Soil characteristics and landcover relationships on soil hydraulic conductivity at a hillslope scale: A view towards local flood management, J. Hydrol., 497, 208–222, https://doi.org/10.1016/j.jhydrol.2013.05.043, 2013. 
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Short summary
Structural changes (cover and height of vegetation plus tree canopy characteristics) to forests during regeneration on degraded land affect how water is partitioned between streamflow, groundwater recharge and evapotranspiration. Partitioning most strongly deviates from baseline conditions during earlier stages of regeneration with dense forest, while recovery may be possible as the forest matures and opens out. This has consequences for informing sustainable landscape restoration strategies.