Carbon and nitrogen cycling on the Qinghai–Tibetan Plateau

Nature Reviews Earth & Environment, Journal Year: 2022, Volume and Issue: 3(10), P. 701 - 716

Published: Sept. 27, 2022

Language: Английский

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Nitrogen fertilization weakens the linkage between soil carbon and microbial diversity: A global meta‐analysis

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(21), P. 6446 - 6461

Published: July 29, 2022

Abstract Soil microbes make up a significant portion of the genetic diversity and play critical role in belowground carbon (C) cycling terrestrial ecosystems. microbial organic C are often tightly coupled processes; however, this coupling can be weakened or broken by rapid global change. A meta‐analysis was performed with 1148 paired comparisons extracted from 229 articles published between January 1998 December 2021 to determine how nitrogen (N) fertilization affects relationship soil content We found that N decreased bacterial (−11%) fungal (−17%), but increased (SOC) (+19%), biomass (MBC) (+17%), dissolved (DOC) (+25%) across different Organic (urea) had greater effect on SOC, MBC, DOC, than inorganic fertilization. Most importantly, increasing absolute values correlation coefficients rate duration, suggesting linkage diversity. The might negatively impact essential ecosystem services under high rates fertilization; understanding is important for mitigating negative enrichment cycling.

Language: Английский

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Microplastic additions alter soil organic matter stability and bacterial community under varying temperature in two contrasting soils

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 838, P. 156471 - 156471

Published: June 2, 2022

Language: Английский

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Microplastic presence significantly alters soil nitrogen transformation and decreases nitrogen bioavailability under contrasting temperatures

Journal of Environmental Management, Journal Year: 2022, Volume and Issue: 317, P. 115473 - 115473

Published: June 6, 2022

Language: Английский

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Effects of Microplastics on Soil Carbon Mineralization: The Crucial Role of Oxygen Dynamics and Electron Transfer

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(36), P. 13588 - 13600

Published: Aug. 30, 2023

Although our understanding of the effects microplastics on dynamics soil organic matter (SOM) has considerably advanced in recent years, fundamental mechanisms remain unclear. In this study, we examine polyethylene and poly(lactic acid) SOM processes via mineralization incubation. Accordingly, evaluated changes carbon dioxide (CO2) methane (CH4) production. An O2 planar optical sensor was used to detect temporal behavior dissolved during incubation determine microscale oxygen heterogeneity caused by microplastics. Additionally, (DOM) were using a combination spectroscopic approaches ultrahigh-resolution mass spectrometry. Microplastics increased cumulative CO2 emissions 160–613%, whereas CH4 dropped 45–503%, which may be attributed oxygenated porous habitats surrounding Conventional biodegradable changed quantities carbon. microplastic treatments, DOM with more polar groups detected, suggesting higher level electron transport. addition, there positive correlation between concentration, electron-donating ability, emission. These findings suggest that facilitate modifying microenvironments, transport capability. study provides new insights into impact dynamics.

Language: Английский

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Geographical, climatic, and soil factors control the altitudinal pattern of rhizosphere microbial diversity and its driving effect on root zone soil multifunctionality in mountain ecosystems

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166932 - 166932

Published: Sept. 9, 2023

Shifts in rhizosphere soil microorganisms of dominant plants' response to climate change profoundly impact mountain ecosystem multifunctionality; relatively little is known about the relationship between them and how they depend on long-term environmental drivers. Here, we conducted analyses microbial altitudinal pattern, community assembly, co-occurrence network 6 plants six typical vegetation zones ranging from 1350 2900 m (a.s.l.) Helan Mountains by absolute quantitative sequencing technology, finally related microbiomes root zone multifunctionality ('soil multifunctionality' hereafter), dependence was explored. It found that pattern bacterial fungal diversities differed significantly. Higher more potential interactions Stipa breviflora Carex coninux were at lowest highest altitudes. Bacterial α diversity, identity some taxa, had significant positive or negative effects multifunctionality. The effect sizes diversity greater than those effects. These results indicated balance microbes determines As number phylum level increases, there will be a net gain Our study reveals geographical climatic factors can directly modulate properties thereby affecting driving multifunctionality, points rather fungi being strongly associated with This work has important ecological implications for predicting multiple environment-plant-soil-microorganisms ecosystems respond future change.

Language: Английский

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Soil aggregate-associated organic carbon mineralization and its driving factors in rhizosphere soil

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 186, P. 109182 - 109182

Published: Sept. 19, 2023

Language: Английский

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Soil microbial trait-based strategies drive metabolic efficiency along an altitude gradient

ISME Communications, Journal Year: 2021, Volume and Issue: 1(1)

Published: Dec. 1, 2021

Trait-based approaches provide a candidate framework for linking soil microbial community to ecosystem processes, yet how the trade-offs in different traits regulate community-level metabolic efficiency remains unknown. Herein we assessed roles of taxa with particular trait strategies mediating along an altitude gradient on Tibetan Plateau. Results showed that declined increasing altitude, as indicated by quotient (microbial respiration per unit biomass, qCO2) and decreasing carbon use (CUE). Both qCO2 CUE were predominantly predicted physiological taxonomic attributes after considering key environmental factors including pH, substrate quantity quality. Specifically, reduced was associated higher investment into nutrient (particularly phosphorus) acquisitions via enzymes. Furthermore, identified assemblies selected harsh environments (low quality temperature) important predictors efficiency. These results suggest adapted limited cold habitats, but at expense lower efficient altitude. Our findings mechanism underlying efficiency, which has implications microbial-mediated processes such dynamics under global climate changes.

Language: Английский

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Temperature sensitivity of permafrost carbon release mediated by mineral and microbial properties

Science Advances, Journal Year: 2021, Volume and Issue: 7(32)

Published: Aug. 6, 2021

Large-scale evidence reveals that mineral and microbial properties mediate permafrost C release its temperature response.

Language: Английский

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Effect of fertilizer management on the soil bacterial community in agroecosystems across the globe

Agriculture Ecosystems & Environment, Journal Year: 2021, Volume and Issue: 326, P. 107795 - 107795

Published: Nov. 27, 2021

Language: Английский

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