Salt precipitation and evaporative flux on sandy soil with saline groundwater under different evaporation demand conditions
Xinhu Li
A B C * and Fengzhi Shi A B C
A State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
B Akesu National Station of Observation and Research for Oasis Agro-ecosystem, Akesu 843017, Xinjiang, China.
C University of Chinese Academy of Sciences, Beijing 100049, China.
Soil Research 60(2) 187-196 https://doi.org/10.1071/SR21111
Submitted: 20 April 2021 Accepted: 5 August 2021 Published: 18 October 2021
© 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing
Abstract
Context: Salt precipitation and its influence on evaporation have been widely studied in recent years. However, the evolution process of salt precipitation and evaporative flux is poorly understood under various evaporation demand (ED) rate condition, which is defined as the evaporation rate of distilled water from soil under constant radiation conditions.
Aims and methods: This study investigated the evolution of salt crust and evaporative flux on sand soil columns with fixed saline groundwater at a depth of 20 cm under four ED conditions (29.5, 21.5, 9.0 and 4.0 mm day−1).
Key results: Evaporation rate significantly decreased in all treatments because the salt crust was elevated and salt domes formed, but the salt patterns of salt precipitation and evaporation exhibited significant differences between different EDs. The homogeneous fine powder crystals precipitated under relatively high ED conditions (29.5 and 21.5 mm day−1), and tended to aggregate and form an elevated salt crust in the initial period of salt precipitation. Consequently, it resulted in a sharp decrease in evaporation during the initial period of salt precipitation. In contrast, discrete and large crystals observed under low ED conditions (9.0 and 4.0 mm day−1), resulted in a stable evaporation stage during the initial period of salt precipitation. The highest relative evaporation rate was observed under the lowest ED condition when the evaporation rate reached stability, which was attributed to the formation of small and discrete salt domes, indicating that both the upward and lateral growth of salt precipitation were influenced by ED.
Conclusions and implications: The physics of salt crust formation needs to be considered in understanding how salt precipitates on the soil surface.
Keywords: baresoil evaporation, column experiment, efflorescence, salt crystal, salt domes, soil crust, soil salinity, soil physical properties.
References
Dai S, Shin H, Santamarina JC (2016) Formation and development of salt crusts on soil surfaces. Acta Geotechnica 11, 1103–1109.| Formation and development of salt crusts on soil surfaces.Crossref | GoogleScholarGoogle Scholar |
Desarnaud J, Derluyn H, Molari L, de Miranda S, Cnudde V, Shahidzadeh N (2015) Drying of salt contaminated porous media: effect of primary and secondary nucleation. Journal of Applied Physics 118, 114901
| Drying of salt contaminated porous media: effect of primary and secondary nucleation.Crossref | GoogleScholarGoogle Scholar |
Eloukabi H, Sghaier N, Prat M, Ben Nassrallah S (2011) Drying experiments in a hydrophobic model porous medium in the presence of a dissolved salt. Chemical Engineering & Technology 34, 1085–1094.
| Drying experiments in a hydrophobic model porous medium in the presence of a dissolved salt.Crossref | GoogleScholarGoogle Scholar |
Eloukabi H, Sghaier N, Ben Nasrallah S, Prat M (2013) Experimental study of the effect of sodium chloride on drying of porous media: the crusty–patchy efflorescence transition. International Journal of Heat and Mass Transfer 56, 80–93.
| Experimental study of the effect of sodium chloride on drying of porous media: the crusty–patchy efflorescence transition.Crossref | GoogleScholarGoogle Scholar |
Fujimaki H, Shiozawa S, Inoue M (2003) Effect of salty crust on soil albedo. Agricultural and Forest Meteorology 118, 125–135.
| Effect of salty crust on soil albedo.Crossref | GoogleScholarGoogle Scholar |
Fujimaki H, Shimano T, Inoue M, Nakane K (2006) Effect of a salt crust on evaporation from a bare saline soil. Vadose Zone Journal 5, 1246–1256.
| Effect of a salt crust on evaporation from a bare saline soil.Crossref | GoogleScholarGoogle Scholar |
Gran M, Carrera J, Massana J, Saaltink MW, Olivella S, Ayora C, Lloret A (2011) Dynamics of water vapor flux and water separation processes during evaporation from a salty dry soil. Journal of Hydrology 396, 215–220.
| Dynamics of water vapor flux and water separation processes during evaporation from a salty dry soil.Crossref | GoogleScholarGoogle Scholar |
Gupta S, Huinink HP, Pel L, Kopinga K (2014) How ferrocyanide influences NaCl crystallization under different humidity conditions. Crystal Growth & Design 14, 1591–1599.
| How ferrocyanide influences NaCl crystallization under different humidity conditions.Crossref | GoogleScholarGoogle Scholar |
Hillel D (2004) ‘Introduction to environmental soil physics’. (Elsevier Academic Press: San Diego, CA, USA)
Li X, Shi F (2019) The effect of flooding on evaporation and the groundwater table for a salt-crusted soil. Water 11, 1003
| The effect of flooding on evaporation and the groundwater table for a salt-crusted soil.Crossref | GoogleScholarGoogle Scholar |
Li X, Shi F (2021) Effects of evolving salt precipitation on the evaporation and temperature of sandy soil with a fixed groundwater table. Vadose Zone Journal 20, e20122
| Effects of evolving salt precipitation on the evaporation and temperature of sandy soil with a fixed groundwater table.Crossref | GoogleScholarGoogle Scholar |
Licsandru G, Noiriel C, Duru P, Geoffroy S, Abou Chakra A, Prat M (2019) Dissolution-precipitation-driven upward migration of a salt crust. Physical Review E 100, 032802
| Dissolution-precipitation-driven upward migration of a salt crust.Crossref | GoogleScholarGoogle Scholar | 31639935PubMed |
Nachshon U, Weisbrod N (2015) Beyond the salt crust: on combined evaporation and subflorescent salt precipitation in porous media. Transport in Porous Media 110, 295–310.
| Beyond the salt crust: on combined evaporation and subflorescent salt precipitation in porous media.Crossref | GoogleScholarGoogle Scholar |
Nachshon U, Shahraeeni E, Or D, Dragila M, Weisbrod N (2011a) Infrared thermography of evaporative fluxes and dynamics of salt deposition on heterogeneous porous surfaces. Water Resources Research 47, W12519
| Infrared thermography of evaporative fluxes and dynamics of salt deposition on heterogeneous porous surfaces.Crossref | GoogleScholarGoogle Scholar |
Nachshon U, Weisbrod N, Dragila MI, Grader A (2011b) Combined evaporation and salt precipitation in homogeneous and heterogeneous porous media. Water Resources Research 47, W03513
| Combined evaporation and salt precipitation in homogeneous and heterogeneous porous media.Crossref | GoogleScholarGoogle Scholar |
Nachshon U, Weisbrod N, Katzir R, Nasser A (2018) NaCl crust architecture and its impact on evaporation: three-dimensional insights. Geophysical Research Letters 45, 6100–6108.
| NaCl crust architecture and its impact on evaporation: three-dimensional insights.Crossref | GoogleScholarGoogle Scholar |
Norouzi Rad M, Shokri N (2012) Nonlinear effects of salt concentrations on evaporation from porous media. Geophysical Research Letters 39, L04403
| Nonlinear effects of salt concentrations on evaporation from porous media.Crossref | GoogleScholarGoogle Scholar |
Norouzi Rad M, Shokri N, Sahimi M (2013) Pore-scale dynamics of salt precipitation in drying porous media. Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 88, 032404
| Pore-scale dynamics of salt precipitation in drying porous media.Crossref | GoogleScholarGoogle Scholar |
Norouzi Rad M, Shokri N, Keshmiri A, Withers PJ (2015) Effects of grain and pore size on salt precipitation during evaporation from porous media. Transport in Porous Media 110, 281–294.
| Effects of grain and pore size on salt precipitation during evaporation from porous media.Crossref | GoogleScholarGoogle Scholar |
Rodriguez-Navarro C, Doehne E (1999) Salt weathering: influence of evaporation rate, supersaturation and crystallization pattern. Earth Surface Processes and Landforms 24, 191–209.
| Salt weathering: influence of evaporation rate, supersaturation and crystallization pattern.Crossref | GoogleScholarGoogle Scholar |
Sghaier N, Prat M (2009) Effect of efflorescence formation on drying kinetics of porous media. Transport in Porous Media 80, 441–454.
| Effect of efflorescence formation on drying kinetics of porous media.Crossref | GoogleScholarGoogle Scholar |
Shimojima E, Yoshioka R, Tamagawa I (1996) Salinization owing to evaporation from bare-soil srufaces and its influence on the evaporation. Journal Of Hydrology 178, 109–136.
| Salinization owing to evaporation from bare-soil srufaces and its influence on the evaporation.Crossref | GoogleScholarGoogle Scholar |
Shokri-Kuehni SMS, Norouzi Rad M, Webb C, Shokri N (2017a) Impact of type of salt and ambient conditions on saline water evaporation from porous media. Advances in Water Resources 105, 154–161.
| Impact of type of salt and ambient conditions on saline water evaporation from porous media.Crossref | GoogleScholarGoogle Scholar |
Shokri-Kuehni SMS, Vetter T, Webb C, Shokri N (2017b) New insights into saline water evaporation from porous media: Complex interaction between evaporation rates, precipitation, and surface temperature. Geophysical Research Letters 44, 5504–5510.
| New insights into saline water evaporation from porous media: Complex interaction between evaporation rates, precipitation, and surface temperature.Crossref | GoogleScholarGoogle Scholar |
Shokri-Kuehni SMS, Raaijmakers B, Kurz T, Or D, Helmig R, Shokri N (2020) Water table depth and soil salinization: from pore-scale processes to field-scale responses. Water Resources Research 56, e2019WR026707
| Water table depth and soil salinization: from pore-scale processes to field-scale responses.Crossref | GoogleScholarGoogle Scholar |
Valeriani C, Sanz E, Frenkel D (2005) Rate of homogeneous crystal nucleation in molten NaCl. The Journal of Chemical Physics 122, 194501
| Rate of homogeneous crystal nucleation in molten NaCl.Crossref | GoogleScholarGoogle Scholar | 16161591PubMed |
Veran-Tissoires S, Marcoux M, Prat M (2012) Discrete salt crystallization at the surface of a porous medium. Physical Review Letters 108, 054502
| Discrete salt crystallization at the surface of a porous medium.Crossref | GoogleScholarGoogle Scholar | 22400935PubMed |
Zhang C, Li L, Lockington D (2014) Numerical study of evaporation-induced salt accumulation and precipitation in bare saline soils: Mechanism and feedback. Water Resources Research 50, 8084–8106.
| Numerical study of evaporation-induced salt accumulation and precipitation in bare saline soils: Mechanism and feedback.Crossref | GoogleScholarGoogle Scholar |
