Multi-Scale Soil Salinization Dynamics From Global to Pore Scale: A Review

Shokri, Nima, Hassani, Amirhossein and Sahimi, Muhammad, (2024). Multi-Scale Soil Salinization Dynamics From Global to Pore Scale: A Review. Reviews of Geophysics, 62(4), e2023RG000804-n/a

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  • Sub-type Journal article
    Author Shokri, Nima
    Hassani, Amirhossein
    Sahimi, Muhammad
    Title Multi-Scale Soil Salinization Dynamics From Global to Pore Scale: A Review
    Appearing in Reviews of Geophysics
    Volume 62
    Issue No. 4
    Publication Date 2024-12-27
    Place of Publication Florida
    Publisher AGU
    Start page e2023RG000804
    End page n/a
    Language eng
    Abstract Soil salinization refers to the accumulation of water-soluble salts in the upper part of the soil profile. Excessive levels of soil salinity affects crop production, soil health, and ecosystem functioning. This phenomenon threatens agriculture, food security, soil stability, and fertility leading to land degradation and loss of essential soil ecosystem services that are fundamental to sustaining life. In this review, we synthesize recent advances in soil salinization at various spatial and temporal scales, ranging from global to core, pore, and molecular scales, offering new insights and presenting our perspective on potential future research directions to address key challenges and open questions related to soil salinization. Globally, we identify significant challenges in understanding soil salinity, which are (a) the considerable uncertainty in estimating the total area of salt-affected soils, (b) geographical bias in ground-based measurements of soil salinity, and (c) lack of information and data detailing secondary salinization processes, both in dry- and wetlands, particularly concerning responses to climate change. At the core scale, the impact of salt precipitation with evolving porous structure on the evaporative fluxes from porous media is not fully understood. This knowledge is crucial for accurately predicting soil water loss due to evaporation. Additionally, the effects of transport properties of porous media, such as mixed wettability conditions, on the saline water evaporation and the resulting salt precipitation patterns remain unclear. Furthermore, effective continuum equations must be developed to accurately represent experimental data and pore-scale numerical simulations.
    Copyright Holder author(s)
    Copyright Year 2024
    Copyright type Creative commons
    DOI https://doi.org/10.1029/2023RG000804
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    Created: Tue, 05 Nov 2024, 02:11:36 JST by Haideh Beigi on behalf of UNU INWEH