Effects of soil particle size and gradation on the transformation between shallow phreatic water and soil water under laboratory freezing-thawing action

Chen, Junfeng; Wang, Erqing; Xue, Jian-Fu; Cui, Lihong; Zheng, Xunhua; Du, Qingjie

doi:10.1016/j.jhydrol.2023.129323

Cited by 7 publications

(8 citation statements)

References 56 publications

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“…Then the soil thawed in both directions under the effect of temperature gradient, but the surface soil was more influenced by the external temperature, thus, the surface soil is the earliest to return to room temperature. Soil temperature recovery showed a significant hysteresis with the increasing of soil depth (Chen et al, 2023).…”

Section: Figurementioning

confidence: 96%

“…Generally, the invalid loss of groundwater occurs during seasonal freeze-thaw period. The difference between UMA and DMA (Q bh ) often has been used to characterize the degree of groundwater depletion (Ouyang et al, 2016;Chen et al, 2018a;Chen et al, 2023), and which of the sand column with different interlayer positions was positive value (Table 3), that is, the cumulative UMA of the sand column was greater than the cumulative DMA. The value of Q bh was the smallest in C h , and…”

Section: Difference Between the Uma And Dmamentioning

confidence: 99%

“…The soil temperature gradient is the important factor affecting the soil temperature. The larger the soil particle size, the smaller the porosity and the higher the thermal conductivity (Chen et al, 2023).…”

Section: Figurementioning

confidence: 99%

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Effect of the interlayer on soil temperature and the transformation between phreatic water and soil water under laboratory freeze-thaw action

et al. 2023

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To reveal the effect of interlayer on the temperature of freeze-thaw soil and the transformation between phreatic water and soil water in shallow groundwater areas, a freeze-thaw test was conducted with a groundwater table depth of 0.5 m under laboratory freeze-thaw action. The soil temperature and the transformation between phreatic water and soil water of sand columns under constant freezing temperature at −20°C lasted for 20 days, and the thawing process lasted for 15 days were monitored. The interlayers with a particle size of 0.1–0.5 mm (d50 = 0.3 mm) and a thickness of 5 cm were set at 5, 15, 20, and 25 cm away from the surface and these sand columns were marked as D5, D15, D20, and D25, which were compared with a homogeneous sand column (Ch) with a particle size of 0.5–1.5 mm (d50 = 1.0 mm). The results showed that the fine particle interlayer had thermal insulation on the soil profile and that it effectively inhibited upward migration of phreatic water to soil water during the freezing process. A sand column that had a near-surface interlayer had a better thermal insulation, a stronger inhibition effect on upward migration amount of phreatic water to soil water (UMA) and a larger cumulative downward movement amount of soil water to phreatic water (DMA). The cumulative UMA of D5, D15, D20, and D25 was 61%–84% of Ch during the freezing stage, and the cumulative DMA of D5, D15, D20, and D25 was 29%–57% of Ch during the thawing stage. The inefficient loss of groundwater increased exponentially with the depth of interlayer, the sand column with an interlayer that was farther away from the surface consumed more groundwater and stored more water in the unsaturated zone, and its DMA reached almost zero earlier. These research results were significant for the scientific evaluation of water resources in shallow groundwater areas.

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Section: Figurementioning

confidence: 96%

Section: Difference Between the Uma And Dmamentioning

confidence: 99%

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Effect of the interlayer on soil temperature and the transformation between phreatic water and soil water under laboratory freeze-thaw action

et al. 2023

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“…The water content of sandy soil increased at the depth of 0 to 50 cm during the process of D1 to D2 and D2 to D3 due to the continuous hydraulic link and the transformation of phreatic water throughout the whole freeze-thaw process [34], with the greatest increase at the depth of 5 cm. The water content in the sandy soil increased with the increase in depth during the freeze-thaw process and was greatest at the end of the thawing period, with the average soil water content in the sandy soil increasing by 18.46% and 0.19% compared with that in sandy loam and loamy sand, respectively.…”

Section: Characteristics Of Water Transport In Different Textured Soilsmentioning

confidence: 99%

“…In addition, soil texture affected the degree of retardation of salt on water migration, and the inhibition effect of salt on evaporation was stronger in homogeneous soil than that in heterogeneous soil [33]. However, the transformation of phreatic water and the corresponding salt transport become extremely complex in the freeze-thaw period; quantitative analyses of the influence of soil texture on soil salt content and the correlation between soil water and salt at different depths have yet to be performed, but some research has been conducted on the transformation of phreatic water [34,35]. The inadequate understanding of the law of salt transport in different textured soils during the freeze-thaw period prompted this study.…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Texture on Water and Salt Transport in Freeze—Thaw Soil in the Shallow Groundwater Area

Wang

Chen

Liu

et al. 2023

Water

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Research on the variation in soil water, heat, and salt in unsaturated zones during the freeze–thaw process has great significance in efficiently utilizing water resources and preventing soil salinization. The freeze–thaw field experiment was carried out with the lysimeter as the test equipment to analyze characteristics of the soil freeze–thaw process, profile water content, main ion content, and salt content of three textured soils with the groundwater table depth of 0.5 m. The results showed that the soil temperature gradient and freezing depth were greater as the average soil particle size increased. The increment of water content at the depth of 0 to 30 cm in sandy loam and loamy sand decreased by 40.20~93.10% and 28.14~65.52% compared with that in sandy soil, and the average increment of salt content at the depth of 0 to 30 cm decreased as the average soil particle size increased during the freeze–thaw period. The average content of Ca2+, Na+, Cl−, and SO42− in loamy sand and sandy soil decreased by 4.37~45.50% and 22.60~70.42% compared with that in sandy loam at the end of the freeze–thaw period, and the correlation between soil salt content and water content decreased with the increase in the average soil particle size. The research results can provide a theoretical basis for soil salinization prevention and crop production in shallow groundwater areas.

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Development and application of a monthly water and salt balance model for seasonally frozen agricultural and non-agricultural areas with shallow groundwater table

Sun,

Zhu,

Mao

et al. 2024

CATENA

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Effects of soil particle size and gradation on the transformation between shallow phreatic water and soil water under laboratory freezing-thawing action

Cited by 7 publications

References 56 publications

Effect of the interlayer on soil temperature and the transformation between phreatic water and soil water under laboratory freeze-thaw action

Effect of the interlayer on soil temperature and the transformation between phreatic water and soil water under laboratory freeze-thaw action

Effect of Soil Texture on Water and Salt Transport in Freeze—Thaw Soil in the Shallow Groundwater Area

Development and application of a monthly water and salt balance model for seasonally frozen agricultural and non-agricultural areas with shallow groundwater table

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