- Title
- Investigating near-surface hydrologic connectivity in a grass-covered inter-row area of a hillslope vineyard using field monitoring and numerical simulations
- Creator
- Krevh, Vedran; Filipović, Lana; Defterdarović, Jasmina; Bogunović, Igor; Zhang, Yonggen; Kovač, Zoran; Barton, Andrew; Filipović, Vilim
- Date
- 2023
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/195655
- Identifier
- vital:18566
- Identifier
-
https://doi.org/10.3390/land12051095
- Identifier
- ISSN:2073-445X (ISSN)
- Abstract
- The interplay of surface and shallow subsurface fluxes plays a critical role in controlling water movement in hillslope agroecosystems and impacting soil and plant health during prolonged dry periods, demonstrating a need for in-field monitoring. This study was conducted for two years (2021–2022) by combining field monitoring of the grass-covered inter-row area (passive wick lysimeter, surface runoff, and meteorological data), laboratory determination of soil hydraulic properties (SHPs), and numerical modeling with the aim to explore near-surface fluxes at the SUPREHILL Critical Zone Observatory (CZO) located on a hillslope vineyard. Additionally, sensitivity analysis for basic root water uptake (RWU) parameters was conducted. The model was evaluated (R2, RMSE, and NSE) with lysimeter (hillslope) and runoff (footslope) data, producing good agreement, but only after the inverse optimization of laboratory estimated hydraulic conductivity was conducted, demonstrating that adequate parameterization is required to capture the hydropedological response of erosion-affected soil systems. Results exhibit the dependence of runoff generation on hydraulic conductivity, rainfall, and soil moisture conditions. The data suggest different soil-rewetting scenarios based on temporal rainfall variability. Sensitivity analysis demonstrated that Leaf Area Index (LAI) was the most responsive parameter determining the RWU. The study offers an approach for the investigation of fluxes in the topsoil for similar sites and/or crops (and covers), presenting the methodology of self-constructed soil–water collection instruments. © 2023 by the authors.
- Publisher
- MDPI
- Relation
- Land Vol. 12, no. 5 (2023), p.
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © 2023 by the authors
- Rights
- Open Access
- Subject
- 3304 Urban and regional planning; 4104 Environmental management; 3301 Architecture; Critical zone observatory (CZO); Hillslope; Passive wick lysimeters; Surface runoff; Topsoil
- Full Text
- Reviewed
- Funder
- This research was funded by the Croatian Science Foundation, grant number UIP-2019-04-5409, project: “Subsurface preferential transport processes in agricultural hillslope soils—SUPREHILL”.
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