Improvements in saline soil and the law of water-salt transport based on salt inhibition using MICP technology

Wang, Xiaorong; Li, Chi; Shi, Yanru; Zhang, Zhenguo; Chi, Qingguo; Wang, Panshi

doi:10.1016/j.bgtech.2023.100055

Cited by 2 publications

(2 citation statements)

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“…It should be noted that our study focused on the topsoil response to FT cycles. Wet underneath soil can modify the biocrust community and physical structure in the soil surface, like frost heaving [ 2 ] and deformation caused by the FT phenomenon [ 42 ]. On the other hand, both cyanobacterial inoculation and biomineralizing treatment significantly decreased the hydraulic conductivity (the easiness of water infiltration) in our study (Table 1 , also see the “Synergy and Conflict Between Biocrust and MICP-Treated Sand Under FT Cycles” section).…”

Section: Discussionmentioning

confidence: 99%

“…This result suggests that biocrust and biomineralized layers could restrict water infiltration into the underlying soil and minimize the frost heaving and underneath soil expansion caused by the FT cycles. The mechanism involving the soil layer can be clarified, for example, by the experiment cultivating the samples in columns instead of the Petri dishes (e.g., [ 42 ]).…”

Section: Discussionmentioning

confidence: 99%

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Cyanobacterial Biocrust on Biomineralized Soil Mitigates Freeze–Thaw Effects and Preserves Structure and Ecological Functions

Kimura,

Okuro

2024

Microb Ecol

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Biocrust inoculation and microbially induced carbonate precipitation (MICP) are tools used in restoring degraded arid lands. It remains unclear whether the ecological functions of the two tools persist when these methods are combined and subjected to freeze–thaw (FT) cycles. We hypothesized a synergetic interaction between MICP treatment and biocrust under FT cycles, which would allow both components to retain their ecological functions. We grew cyanobacterial (Nostoc commune) biocrusts on bare soil and on MICP (Sporosarcina pasteurii)-treated soil, subjecting them to repeated FT cycles simulating the Mongolian climate. Generalized linear modeling revealed that FT cycling did not affect physical structure or related functions but could increase the productivity and reduce the nutrient condition of the crust. The results confirm the high tolerance of MICP-treated soil and biocrust to FT cycling. MICP treatment + biocrust maintained higher total carbohydrate content under FT stress. Our study indicates that biocrust on biomineralized soil has a robust enough structure to endure FT cycling during spring and autumn and to promote restoration of degraded lands.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%