Emerging multiscale insights on microbial carbon use efficiency in the land carbon cycle

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 13, 2024

Microbial carbon use efficiency (CUE) affects the fate and storage of in terrestrial ecosystems, but its global importance remains uncertain. Accurately modeling predicting CUE on a scale is challenging due to inconsistencies measurement techniques complex interactions climatic, edaphic, biological factors across scales. The link between microbial soil organic relies stabilization necromass within aggregates or association with minerals, necessitating an integration processes approaches. In this perspective, we propose comprehensive framework that integrates diverse data sources, ranging from genomic information traditional assessments, refine cycle models by incorporating variations CUE, thereby enhancing our understanding contribution cycling.

Язык: Английский

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Ectomycorrhizal Fungi and Biochar Promote Soil Recalcitrant Carbon Increases under Arsenic Stress

Journal of Hazardous Materials, Год журнала: 2025, Номер 489, С. 137598 - 137598

Опубликована: Фев. 13, 2025

Язык: Английский

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Biochar and Straw Amendments over a Decade Divergently Alter Soil Organic Carbon Accumulation Pathways

Agronomy, Год журнала: 2024, Номер 14(9), С. 2176 - 2176

Опубликована: Сен. 23, 2024

Exogenous organic carbon (C) inputs and their subsequent microbial mineral transformation affect the accumulation process of soil C (SOC) pool. Nevertheless, knowledge gaps exist on how different long-term forms crop straw incorporation (direct return or pyrolyzed to biochar) modifies SOC composition stabilization. This study investigated, in a 13-year field experiment, functional fractions protection by iron (Fe) oxide minerals soils amended with biochar. Under equal input, was enhanced both direct (by 43%) biochar 85%) compared non-amended conventional fertilization, but pathways. Biochar had greater efficiency increasing through stable exogenous inhibition respiration. Moreover, biochar-amended contained 5.0-fold SOCs particulate matter (POM) 1.2-fold more mineral-associated (MAOM) relative conventionally fertilized soils. Comparatively, although magnitude effect smaller, straw-derived OC preserved preferentially most MAOM. Straw increased nutrient content stimulated activity, resulting increases necromass POM MAOM 117% 43%, respectively) 72% 18%). promoted poorly crystalline (Feo) organically complexed (Fep) Fe oxides accumulation, were significantly positively correlated SOC. The results address decadal-scale effects application formation pool soil, understanding causal mechanisms can allow practices maximize content. These are great implications for better predicting accurately controlling response pools agroecosystems future changes disturbances maintaining regional balance.

Язык: Английский

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Linking prokaryotic life-history strategies to soil organic carbon stability in semi-arid orchard with cover crops

CATENA, Год журнала: 2025, Номер 252, С. 108833 - 108833

Опубликована: Фев. 19, 2025

Язык: Английский

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Long-Term Crop Rotation Revealed the Relationship Between Soil Organic Carbon Physical Fraction and Bacterial Community at Aggregate Scales

Microorganisms, Год журнала: 2025, Номер 13(3), С. 496 - 496

Опубликована: Фев. 24, 2025

Crop rotation enhances soil fertility and health by modulating microbial communities, with organic carbon (SOC) dynamics governed aggregate–microbial interplay. To date, the effects of different crop rotations on SOC fractions relevant bacterial communities at aggregate scales remain uncertain. Here, a 17-year field experiment was used to reveal maize monoculture (MM), soybean (SS), communities. Compared SS treatment, only MS treatment significantly increased particulate (POC) content scale. Nevertheless, higher mineral-associated (MaOC) contents were observed under MM treatments than treatment. The co-occurrence networks for macro- microaggregates divided into three main ecological clusters. specific taxa in Cluster 1 2 are involved fraction turnover within microaggregates, respectively. In total, Vicinamibacteraceae-driven community dominated MaOC process macroaggregates, whereas Actinobacteria- Pyrinomonadaceae-driven changed microaggregates. This study strengthens our understanding role accumulation practices.

Язык: Английский

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Mechanisms of soil persistent organic carbon loss in alpine ecosystems: insights into microbial and calcium spatial footprint

Soil Biology and Biochemistry, Год журнала: 2025, Номер unknown, С. 109765 - 109765

Опубликована: Фев. 1, 2025

Язык: Английский

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Long-term phosphorus addition enhances the contributions of plant lignin and microbial necromass to soil organic carbon in a rice–wheat rotation

Applied Soil Ecology, Год журнала: 2025, Номер 209, С. 106010 - 106010

Опубликована: Март 10, 2025

Язык: Английский

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Legume introduction increases soil organic carbon in grassland via regulation of microbial metabolism regardless of phosphorus fertilization

Geoderma, Год журнала: 2025, Номер 456, С. 117262 - 117262

Опубликована: Март 21, 2025

Язык: Английский

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Elevation-dependent distribution of soil microbial necromass carbon in Pinus densata Mast. forests

Applied Soil Ecology, Год журнала: 2025, Номер 209, С. 106049 - 106049

Опубликована: Март 23, 2025

Язык: Английский

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Nitrogen-induced acidification increases soil organic carbon accrual by promoting particulate organic carbon and microbial necromass under long-term experiment in the paddy soils of East China

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Background and aims Nitrogen (N) addition can substantially affect soil carbon cycling in agroecosystems. Microbial necromass (MNC) is widely recognized as a key contributor to organic C (SOC) fractions. However, the mechanisms underlying responses of MNC SOC fractions N fertilization paddy soils remain unclear. Methods A field experiment with four rates, namely, 0, 300, 450, 600 kg ha^–1 yr^–1 was conducted determine effects on fractions, microbial (MNC), enzyme activity, biomass rice–wheat rotation. Results increased POC concentrations by 2.88–8.41% 14.6–41.2%, respectively, but did not MAOC. The ratio MAOC reduced addition, indicating that decreased stability. concentration 7.32–22.5% its contribution 4.14–13.7%. activity β-1,4-N-acetyl-glucosaminidase decreased, while activities leucine amino peptidase acid phosphatase were under P addition. Structural equation modeling random forest revealed N-induced decrease pH promoted accrual increasing root biomass, consequently improving POC. Conclusions likely more vulnerable than acidification primary driver for promoting soils.

Язык: Английский

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