Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential
Abstract Water–salt movement is a central issue in soil, water, and crop science, with its accurate simulation holding significant scientific value. The combined Richards equation for water movement and the continuity equation for solute migration currently provide a systematic approach for simulati...
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| Format: | Article |
| Language: | English |
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Wiley
2025-06-01
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| Series: | Water Resources Research |
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| Online Access: | https://doi.org/10.1029/2024WR039352 |
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| author | Yu Liu Ye Liu Tingting Huang Yimei He Weibo Nie Yongqiang Wang Xiaoyi Ma |
| author_facet | Yu Liu Ye Liu Tingting Huang Yimei He Weibo Nie Yongqiang Wang Xiaoyi Ma |
| author_sort | Yu Liu |
| collection | DOAJ |
| description | Abstract Water–salt movement is a central issue in soil, water, and crop science, with its accurate simulation holding significant scientific value. The combined Richards equation for water movement and the continuity equation for solute migration currently provide a systematic approach for simulating water–salt movement. However, existing models and methods do not adequately address the theoretical effect of solute potential differences induced by soil salinity changes on water movement in practical applications. This study focuses on the infiltration of brackish water containing NaCl, integrating the semi‐permeable membrane theory from physical chemistry. A theoretical method for calculating the osmotic efficiency coefficient was introduced. In addition, a soil water–solute kinetic model and solution method, considering the influence of solute potential, were constructed. The applicability of the model was validated by comparing the simulation and experimental results, including infiltration curves, water–salt distributions, and water potentials in three soils subjected to different brackish water–salt concentrations. Subsequently, the infiltration curves and water–salt distribution characteristics of four typical soils under varying initial water contents and salt concentrations were simulated to elucidate the mechanism of coupled water–salt movement, thereby expanding the theory of water–salt dynamics. Furthermore, a correction model for infiltration parameters based on the Kostiakov equation was developed, incorporating the soil‐specific surface area, initial volumetric water content, and brackish water–salt concentration. This model enabled the conversion of infiltration parameters between brackish water and freshwater conditions. The study provides novel theoretical methods and tools for simulating soil infiltration under brackish water irrigation. |
| format | Article |
| id | doaj-art-a006a8f9adeb4e82bf8a3a9b2b1828a8 |
| institution | Kabale University |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Water Resources Research |
| spelling | doaj-art-a006a8f9adeb4e82bf8a3a9b2b1828a82025-08-20T03:31:30ZengWileyWater Resources Research0043-13971944-79732025-06-01616n/an/a10.1029/2024WR039352Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute PotentialYu Liu0Ye Liu1Tingting Huang2Yimei He3Weibo Nie4Yongqiang Wang5Xiaoyi Ma6Key Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education Northwest A&F University Yangling ChinaKey Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education Northwest A&F University Yangling ChinaDepartment of Biological & Ecological Engineering Oregon State University Corvallis OR USAKey Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education Northwest A&F University Yangling ChinaState Key Laboratory of Eco‐Hydraulics in Northwest Arid Region of China Xi'an University of Technology Xi'an ChinaAgricultural College Inner Mongolia Agricultural University Hohhot ChinaKey Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education Northwest A&F University Yangling ChinaAbstract Water–salt movement is a central issue in soil, water, and crop science, with its accurate simulation holding significant scientific value. The combined Richards equation for water movement and the continuity equation for solute migration currently provide a systematic approach for simulating water–salt movement. However, existing models and methods do not adequately address the theoretical effect of solute potential differences induced by soil salinity changes on water movement in practical applications. This study focuses on the infiltration of brackish water containing NaCl, integrating the semi‐permeable membrane theory from physical chemistry. A theoretical method for calculating the osmotic efficiency coefficient was introduced. In addition, a soil water–solute kinetic model and solution method, considering the influence of solute potential, were constructed. The applicability of the model was validated by comparing the simulation and experimental results, including infiltration curves, water–salt distributions, and water potentials in three soils subjected to different brackish water–salt concentrations. Subsequently, the infiltration curves and water–salt distribution characteristics of four typical soils under varying initial water contents and salt concentrations were simulated to elucidate the mechanism of coupled water–salt movement, thereby expanding the theory of water–salt dynamics. Furthermore, a correction model for infiltration parameters based on the Kostiakov equation was developed, incorporating the soil‐specific surface area, initial volumetric water content, and brackish water–salt concentration. This model enabled the conversion of infiltration parameters between brackish water and freshwater conditions. The study provides novel theoretical methods and tools for simulating soil infiltration under brackish water irrigation.https://doi.org/10.1029/2024WR039352brackish water infiltrationsolute potentialinfiltration parameter correctionwater and salt movement |
| spellingShingle | Yu Liu Ye Liu Tingting Huang Yimei He Weibo Nie Yongqiang Wang Xiaoyi Ma Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential Water Resources Research brackish water infiltration solute potential infiltration parameter correction water and salt movement |
| title | Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential |
| title_full | Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential |
| title_fullStr | Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential |
| title_full_unstemmed | Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential |
| title_short | Establishment of a Brackish Water Infiltration Model and Infiltration Parameter Correction Model Considering Solute Potential |
| title_sort | establishment of a brackish water infiltration model and infiltration parameter correction model considering solute potential |
| topic | brackish water infiltration solute potential infiltration parameter correction water and salt movement |
| url | https://doi.org/10.1029/2024WR039352 |
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