Importance of carbon and nitrogen availability to microbial necromass carbon accumulation in the drawdown area

Liao, Shanshan; Nie, Xiaodong; Zeng, Aoqi; Liao, Wenfei; Liu, Yi; Li, Zhongwu

doi:10.1016/j.catena.2023.107688

CATENA

2024

DOI: 10.1016/j.catena.2023.107688

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Importance of carbon and nitrogen availability to microbial necromass carbon accumulation in the drawdown area

Shanshan Liao,

Xiaodong Nie,

Aoqi Zeng

et al.

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Cited by 3 publications

References 76 publications

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Warming-induced response of microbial diversity and functions regulated microbial necromass and soil multifunctionality

Hou,

Liu,

et al. 2025

Applied Soil Ecology

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Warming-induced response of microbial diversity and functions regulated microbial necromass and soil multifunctionality

Hou,

Liu,

et al. 2025

Applied Soil Ecology

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The contribution of microbial necromass to soil organic carbon and influencing factors along a variation of habitats in alpine ecosystems

Hou,

Wang,

Chang

et al. 2024

Science of The Total Environment

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Plateau Pika Disturbance Changes Soil Bacterial Functions and Exoenzyme Abundance to Modulate the C Cycle Pathway in Alpine Grasslands

Li,

Wang,

Zhu

et al. 2024

IJMS

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Plateau pika (Ochotona curzoniae) is crucial to soil organic carbon (SOC) storage in the Qinghai–Tibetan plateau (QTP), but its role in bacterial SOC metabolisms across different degraded alpine grasslands remains unclear. In this study, we investigated the soil physicochemical properties and the composition and function of the bacterial communities in control and pika-disturbed grasslands experiencing different degradation levels (undegraded, UDM; lightly, LDM; moderately, MDM and severely, SDM). The results demonstrate that (i) the primary bacterial phyla include Proteobacteria, Acidobacteriota, Actinobacteriota, Bacteroidota and Verrucomicrobiota. Soil physicochemical properties significantly impact the composition of the bacterial communities and determine the influence of pika disturbance. Pika disturbance increases bacterial OTUs by 7.5% in LDP (p > 0.05) and by 50.5% in MDP (p < 0.05), while decreases OTUs by 21.4% in SDP (p < 0.05). (ii) Pika disturbance downregulates the exoenzyme abundance associated with simple and complex organic matter decomposition by 9.5% and 13.9% in LDP, and 29.4% and 26.3% in MDP (p < 0.05), while upregulates these exoenzymes by 23.6% and 37.9% in SDP (p < 0.05). These changes correspond to the increase in TC and SOC in LDP and MDP but declines in SDP. (iii) Plateau pika disturbance can enhance SOC accumulation through upregulating the C cycle pathway of ethanol production in LDP and MDP. However, it upregulates the pathway of pyruvate to CO2 conversion in SDP, leading to negative influence on SOC storage.

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Importance of carbon and nitrogen availability to microbial necromass carbon accumulation in the drawdown area

Cited by 3 publications

References 76 publications

Warming-induced response of microbial diversity and functions regulated microbial necromass and soil multifunctionality

Warming-induced response of microbial diversity and functions regulated microbial necromass and soil multifunctionality

The contribution of microbial necromass to soil organic carbon and influencing factors along a variation of habitats in alpine ecosystems

Plateau Pika Disturbance Changes Soil Bacterial Functions and Exoenzyme Abundance to Modulate the C Cycle Pathway in Alpine Grasslands

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