A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater
Study region: Hetao Irrigation District (Hetao) is the second-largest irrigation district in the Yellow River basin. It is located in a seasonally frozen soil area with shallow groundwater and salinization. These conditions significantly influence the freeze-thaw processes in the soil. Study focus:...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824004488 |
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| _version_ | 1832591827652313088 |
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| author | Pu Wang Zhongyi Liu Chaozi Wang Chenglong Zhang Weishu Wang Xianghao Wang Juan Han Zailin Huo |
| author_facet | Pu Wang Zhongyi Liu Chaozi Wang Chenglong Zhang Weishu Wang Xianghao Wang Juan Han Zailin Huo |
| author_sort | Pu Wang |
| collection | DOAJ |
| description | Study region: Hetao Irrigation District (Hetao) is the second-largest irrigation district in the Yellow River basin. It is located in a seasonally frozen soil area with shallow groundwater and salinization. These conditions significantly influence the freeze-thaw processes in the soil. Study focus: In this study, a novel water-heat-salt coupling model was developed. An improved soil freezing characteristic curve (SFCC) was proposed to evaluate the effect of salt content on the water-ice phase transition. Additionally, an equilibrium state assumption for the unfrozen soil layers was adopted to describe soil water distribution influenced by shallow groundwater. New hydrological insights for the region: The model effectively captured the spatiotemporal dynamics of water, heat, and salt driven by soil freeze-thaw processes. Besides, it accurately estimated the total water content in the 0–40 cm soil layer, which is the main crop root zone (RMSE < 0.05 cm³/cm³, R² > 0.49). Note that the developed model could accurately simulate soil temperature dynamics, with R² > 0.85 and NSE > 0.77. This study developed a high-efficiency freeze-thaw model for regions like Hetao, with shallow groundwater and severe soil salinization. Compared to complex numerical models, the proposed model has greater potential for regional application. |
| format | Article |
| id | doaj-art-2e0c828ad37d43eebf8f94985ade5d10 |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-2e0c828ad37d43eebf8f94985ade5d102025-01-22T05:42:01ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102099A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwaterPu Wang0Zhongyi Liu1Chaozi Wang2Chenglong Zhang3Weishu Wang4Xianghao Wang5Juan Han6Zailin Huo7Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaWater Conservation Promotion Center, Ministry of Water Resources, Beijing 100038, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR ChinaCenter for Agricultural Water Research in China, China Agricultural University, Beijing 100083, PR China; Correspondence to: No.17 Qinghua East Road, Haidian District, Beijing 100083, PR China.Study region: Hetao Irrigation District (Hetao) is the second-largest irrigation district in the Yellow River basin. It is located in a seasonally frozen soil area with shallow groundwater and salinization. These conditions significantly influence the freeze-thaw processes in the soil. Study focus: In this study, a novel water-heat-salt coupling model was developed. An improved soil freezing characteristic curve (SFCC) was proposed to evaluate the effect of salt content on the water-ice phase transition. Additionally, an equilibrium state assumption for the unfrozen soil layers was adopted to describe soil water distribution influenced by shallow groundwater. New hydrological insights for the region: The model effectively captured the spatiotemporal dynamics of water, heat, and salt driven by soil freeze-thaw processes. Besides, it accurately estimated the total water content in the 0–40 cm soil layer, which is the main crop root zone (RMSE < 0.05 cm³/cm³, R² > 0.49). Note that the developed model could accurately simulate soil temperature dynamics, with R² > 0.85 and NSE > 0.77. This study developed a high-efficiency freeze-thaw model for regions like Hetao, with shallow groundwater and severe soil salinization. Compared to complex numerical models, the proposed model has greater potential for regional application.http://www.sciencedirect.com/science/article/pii/S2214581824004488Water-heat-salt couplingShallow groundwaterFarmland |
| spellingShingle | Pu Wang Zhongyi Liu Chaozi Wang Chenglong Zhang Weishu Wang Xianghao Wang Juan Han Zailin Huo A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater Journal of Hydrology: Regional Studies Water-heat-salt coupling Shallow groundwater Farmland |
| title | A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater |
| title_full | A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater |
| title_fullStr | A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater |
| title_full_unstemmed | A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater |
| title_short | A novel soil water-heat-salt coupling model for freezing-thawing period in farmland with shallow groundwater |
| title_sort | novel soil water heat salt coupling model for freezing thawing period in farmland with shallow groundwater |
| topic | Water-heat-salt coupling Shallow groundwater Farmland |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824004488 |
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