Effects of Groundwater Depth on Soil Water and Salinity Dynamics in the Hetao Irrigation District: Insights from Laboratory Experiments and HYDRUS-1D Simulations
Rattachement africain : cn, pt. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The management of groundwater depth (GWD) in alluvial soils under irrigation in arid climates is critical for soil and water conservation, given its influence on salt dynamics and water availability for crops. GWD is influenced by the interaction of irrigation water supply and drainage system design and operation. Controlling GWD is a significant issue in the Hetao Irrigation District due to continuous irrigation, arid climate, and high risks of soil salinization, which concerns farmers and water management authorities. To address this issue, a study was conducted based on open-air laboratory experimentation to rigorously assess the effects of GWD on soil salt dynamics and capillary rise contribution to maize cultivation under level basin irrigation. Data collected served as the basis for parameterizing and calibrating the HYDRUS-1D model, facilitating simulation of soil water and salt dynamics to enhance understanding of GWD effects ranging from 1.25 m to 2.25 m. It was concluded that during calibration and validation, the model demonstrated strong performance; SWC simulations achieved R2 > 0.69, RMSE < 0.03 cm3 cm−3, and NSE approaching 1; and EC simulations yielded R2 ≥ 0.74 with RMSE < 0.22 S cm−1. Additionally, the simulated bottom boundary moisture flux closely matched the measured values. The most favorable GWD range should be between 1.75 m and 2.0 m, minimizing the negative impacts of irrigation-induced soil salinity while maximizing water use efficiency and crop productivity. A higher GWD causes crop water stress, while a lower value results in a greater risk of soil salinity. This study anticipates future field application in Hetao to assess drainage system effectiveness and variability in salinity and productivity effects.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Effects of Groundwater Depth on Soil Water and Salinity Dynamics in the Hetao Irrigation District: Insights from Laboratory Experiments and HYDRUS-1D Simulations
- Date Crossref
- 23/08/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Inner Mongolia Agricultural University pays non établi dans la noticeUniversité ou école supérieure
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Polytechnic Institute of Coimbra pays non établi dans la noticeUniversité ou école supérieure
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Research Center for Natural Resources pays non établi dans la noticeStructure de recherche
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Inner Mongolia Medical University pays non établi dans la noticeOrganisme public
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Beihang University pays non établi dans la noticeUniversité ou école supérieure
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College of Water Conservancy and Civil Engineering pays non établi dans la noticeUniversité ou école supérieure
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Ordos Water Conservancy Development Center pays non établi dans la noticeInstitution
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College of Basic Medical Science Inner Mongolia Key Laboratory of Molecular Biology pays non établi dans la noticeUniversité ou école supérieure
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School of Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
Inner Mongolia Agricultural University, Polytechnic Institute of Coimbra et Research Center for Natural Resources, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.