Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations

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...

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Main Authors: Vedran Krevh, Lana Filipović, Jasmina Defterdarović, Igor Bogunović, Yonggen Zhang, Zoran Kovač, Andrew Barton, Vilim Filipović
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Land
Subjects:
Online Access:https://www.mdpi.com/2073-445X/12/5/1095
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author Vedran Krevh
Lana Filipović
Jasmina Defterdarović
Igor Bogunović
Yonggen Zhang
Zoran Kovač
Andrew Barton
Vilim Filipović
author_facet Vedran Krevh
Lana Filipović
Jasmina Defterdarović
Igor Bogunović
Yonggen Zhang
Zoran Kovač
Andrew Barton
Vilim Filipović
author_sort Vedran Krevh
collection DOAJ
description 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 (R<sup>2</sup>, 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.
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spelling doaj.art-b1a8a034846540f79d86ac8d29f308cc2023-11-18T02:07:57ZengMDPI AGLand2073-445X2023-05-01125109510.3390/land12051095Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical SimulationsVedran Krevh0Lana Filipović1Jasmina Defterdarović2Igor Bogunović3Yonggen Zhang4Zoran Kovač5Andrew Barton6Vilim Filipović7Department of Soil Amelioration, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, CroatiaDepartment of Soil Amelioration, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, CroatiaDepartment of Soil Amelioration, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, CroatiaDepartment of General Agronomy, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, CroatiaInstitute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, ChinaDepartment of Geology and Geological Engineering, Faculty of Mining Geology and Petroleum Engineering, University of Zagreb, 10000 Zagreb, CroatiaFuture Regions Research Centre, Geotechnical and Hydrogeological Engineering Research Group, Federation University, Gippsland, VIC 3841, AustraliaDepartment of Soil Amelioration, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, CroatiaThe 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 (R<sup>2</sup>, 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.https://www.mdpi.com/2073-445X/12/5/1095passive wick lysimeterssurface runofftopsoilhillslopecritical zone observatory (CZO)
spellingShingle Vedran Krevh
Lana Filipović
Jasmina Defterdarović
Igor Bogunović
Yonggen Zhang
Zoran Kovač
Andrew Barton
Vilim Filipović
Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
Land
passive wick lysimeters
surface runoff
topsoil
hillslope
critical zone observatory (CZO)
title Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
title_full Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
title_fullStr Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
title_full_unstemmed Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
title_short Investigating Near-Surface Hydrologic Connectivity in a Grass-Covered Inter-Row Area of a Hillslope Vineyard Using Field Monitoring and Numerical Simulations
title_sort investigating near surface hydrologic connectivity in a grass covered inter row area of a hillslope vineyard using field monitoring and numerical simulations
topic passive wick lysimeters
surface runoff
topsoil
hillslope
critical zone observatory (CZO)
url https://www.mdpi.com/2073-445X/12/5/1095
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