Evaluation of parameterisation approaches for estimating soil hydraulic parameters with HYDRUS-1D in the groundnut basin of Senegal
| Autor: | Djim M. L. Diongue, Olivier Roupsard, Frederic C. Do, Christine Stumpp, Didier Orange, Sidy Sow, Christophe Jourdan, Serigne Faye |
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| Přispěvatelé: | Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), LMI IESOL Intensification Ecologique des Sols Cultivés en Afrique de l’Ouest [Dakar] (IESOL), Institut de recherche pour le développement (IRD [Sénégal]), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Université Gaston Berger de Saint-Louis Sénégal (UGB), scholarship from CIRAD, Faidherbia-Flux received funding from EU-LEAP-Agri (RAMSES II), EU-DESIRA (CASSECS), EU- H2020 (SustainSahel), AGROPOLIS and TOTAL Foundations (DSCATT), CGIAR (GLDC), European Project: 861974, H2020,SOCIETAL CHALLENGES - Food security, sustainable agriculture and forestry, marine, maritime and inland water research, and the bioeconomy,SustainSahel(2020), European Project: 32851,RAMSES II |
| Rok vydání: | 2022 |
| Předmět: |
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
evapotranspiration soil hydraulic parameters loamy sand soil Propriété hydraulique du sol [SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study Évapotranspiration Sahelian cropping system soil moisture [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology P10 - Ressources en eau et leur gestion Teneur en eau du sol HYDRUS-1D Hydrologie Water Science and Technology |
| Zdroj: | Hydrological Sciences Journal Hydrological Sciences Journal, 2022, 67 (15), pp.2327-2343. ⟨10.1080/02626667.2022.2142474⟩ |
| ISSN: | 0262-6667 |
| DOI: | 10.6084/m9.figshare.21498532.v1 |
| Popis: | Soil hydraulic parameters (SHPs) required as inputs for numerical models are scarce in Sahelian regions. Instead, they are estimated using pedotransfer functions (PTFs), but their ability to simulate soil water dynamics has not been evaluated. This study aims to parameterize SHPs with seven different PTFs and inverse modelling to examine their ability to simulate water fluxes in Senegal’s Groundnut basin. We used four years of field measurements of soil water content (SWC) and actual evapotranspiration (ETa) under pearl millet and groundnut crop rotation for model evaluation. Inverse modelling for SWC (root mean square error [RMSE] ≤ 0.015 cm3 cm−3) and ETa (RMSE ≤ 0.62 mm d−1) yielded the best model performance compared to PTFs (0.024–0.175 cm3 cm−3 and 0.68–0.96 mm d−1, respectively). Where field measurements are lacking for inverse estimation, three of the seven tested PTFs yielded good modelling results and could be used as a parsimonious approach for cultivated Sahelian soils. |
| Databáze: | OpenAIRE |
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