The effect of differences in soil water content on microbial and enzymatic properties across the soil profiles

Długosz, Jacek; Piotrowska-Długosz, Anna; Breza-Boruta, Barbara

doi:10.1016/j.ecohyd.2023.06.010

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…This difference may be related to the dynamic changes in moisture in thermokarst areas and their impact on soil microbial activity and organic matter decomposition [ 40 ]. Excessive water content can lead to soil anoxia, thereby inhibiting microbial activity and reducing Rs [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

The Response of Soil Respiration to Temperature and Humidity in the Thermokarst Depression Zone of the Headwater Wetlands of Qinghai Lake

Mao,

Chen,

et al. 2024

Biology

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As the climate warms, the thickening of the active layer of permafrost has led to permafrost melting and surface collapse, forming thermokarst landforms. These changes significantly impact regional vegetation, soil physicochemical properties, and hydrological processes, thereby exacerbating regional carbon cycling. This study analyzed the relationship between soil respiration rate (Rs), soil temperature (T), and volumetric water content (VWC) in the thermokarst depression zone of the headwater wetlands of Qinghai Lake, revealing their influence on these soil parameters. Results showed a significant positive correlation between soil temperature and Rs (p < 0.001), and a significant negative correlation between VWC and Rs (p < 0.001). The inhibitory effect of VWC on Rs in the thermokarst depression zone was stronger than under natural conditions (p < 0.05). Single-factor models indicated that the temperature-driven model had higher explanatory power for Rs variation in both the thermokarst depression zone (R2 = 0.509) and under natural conditions (R2 = 0.414), while the humidity-driven model had lower explanatory power. Dual-factor models further improved explanatory power, slightly more so in the thermokarst depression zone. This indicates that temperature and humidity jointly drive Rs. Additionally, during the daytime, temperature had a more significant impact on Rs under natural conditions, while increased VWC inhibited Rs. At night, the positive correlation between Rs and temperature in the thermokarst depression zone increased significantly. The temperature sensitivity (Q10) values of Rs were 3.32 and 1.80 for the thermokarst depression zone and natural conditions, respectively, indicating higher sensitivity to temperature changes at night in the thermokarst depression zone. This study highlights the complexity of soil respiration responses to temperature and humidity in the thermokarst depression zone of Qinghai Lake’s headwater wetlands, contributing to understanding carbon cycling in wetland ecosystems and predicting wetland carbon emissions under climate change.

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Section: Discussionmentioning

confidence: 99%

The Response of Soil Respiration to Temperature and Humidity in the Thermokarst Depression Zone of the Headwater Wetlands of Qinghai Lake

Mao,

Chen,

et al. 2024

Biology

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“…This is because Gemmatimonas bacteria are involved in the degradation and cycling of organic matter in the soil [54]. An increased soil water content promotes fungal growth and reproduction, as moist environments are more conducive to fungal survival [55]. In addition to affecting enzyme activity, microbial respiration rate, and substrate availability, temperature also affects the heterotrophic respiration of microorganisms [56,57].…”

Section: Relationship Between Bacterial and Fungal Communities And So...mentioning

confidence: 99%

From Residue to Resource: A Physicochemical and Microbiological Analysis of Soil Microbial Communities through Film Mulch-Enhanced Rice Straw Return Strategies

Wang,

Huang,

Yang

et al. 2024

Agronomy

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Promoting rice straw in situ return is an important strategy for improving soil quality. From 2018 to 2021, we investigated the effects of rice straw return with microbial agents and film covering technology on soil physical and chemical properties at different layer depths, as well as the soil microbial community structure, in Hunan, southern China. This study was designed to evaluate the effects of microbial agents (T1), film mulch covering (T2), and the application of microbial agents combined with film mulch (T3) on the soil physicochemical properties and microbial community after rice straw in situ return. The results show that, after three years of continuous treatment, T3 significantly increased the soil temperature by 17.76–22.97%, T2 significantly increased the water content by 34.27–46.23%, and T1 and T3 significantly increased the soil pH. The addition of microbial agents combined with film mulch resulted in a notable increase in both the number of OTUs and the Chao1 index of soil microorganisms. Additionally, the model of promoting rice straw in situ return (the application of a microbial agent combined with film mulch) was shown to promote the growth of beneficial soil microorganisms. RDA was used for the investigation, and the findings showed that soil microorganisms were significantly influenced by the TOC content, pH, and water content. These findings provide evidence of an effective method for accelerating the decomposition of late rice straw and guiding soil improvement in tobacco–rice rotation regions.

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Covalent immobilization: A review from an enzyme perspective

Prabhakar,

Giaretta,

Zulli

et al. 2025

Chemical Engineering Journal

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The effect of differences in soil water content on microbial and enzymatic properties across the soil profiles

Cited by 5 publications

References 46 publications

The Response of Soil Respiration to Temperature and Humidity in the Thermokarst Depression Zone of the Headwater Wetlands of Qinghai Lake

The Response of Soil Respiration to Temperature and Humidity in the Thermokarst Depression Zone of the Headwater Wetlands of Qinghai Lake

From Residue to Resource: A Physicochemical and Microbiological Analysis of Soil Microbial Communities through Film Mulch-Enhanced Rice Straw Return Strategies

Covalent immobilization: A review from an enzyme perspective

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