Temporal dynamics of soil microbial C and N cycles with GHG fluxes in the transition from tropical peatland forest to oil palm plantation DOI Creative Commons
Frazer Midot,

Kian Mau Goh,

Kok Jun Liew

et al.

Applied and Environmental Microbiology, Journal Year: 2024, Volume and Issue: 91(1)

Published: Dec. 23, 2024

Tropical peatlands significantly influence local and global carbon nitrogen cycles, yet they face growing pressure from anthropogenic activities. Land use changes, such as peatland forests conversion to oil palm plantations, affect the soil microbiome greenhouse gas (GHG) emissions. However, temporal dynamics of microbial community changes their role GHG indicators are not well understood. This study examines peat chemistry, communities, emissions 2016 2020 in a logged-over secondary swamp forest Sarawak, Malaysia, which transitioned an plantation. focuses on genetic composition governing plant litter degradation, methane (CH4), nitrous oxide (N2O) fluxes. Soil CO2 emission increased (doubling approximately 200 mg C m-2 h-1), while CH4 decreased (from µg h-1 slightly negative) following land changes. The N2O plantation reached 1,510 N h-1, higher than previous uses. fluxes were driven by groundwater table, humification levels, C:N ratio, with Methanomicrobia populations dominating methanogenesis Methylocystis main oxidizer. correlated total nitrogen, ratio dominant nirK-type denitrifiers (13-fold nir nosZ) minor nitrification (a threefold increase amoA) Proteobacteria Acidobacteria encoding incomplete denitrification genes potentially impact These findings highlighted complex interactions between communities environmental factors influencing altered tropical ecosystems.IMPORTANCETropical carbon-rich environments that release significant amounts gases when drained or disturbed. assesses change site converted into transformation lowered levels changed properties. Consequently, released dioxide compared As play crucial roles this identified associated diversity, including specific groups related Understanding driving shifts provides baseline information mitigate consequences change, leading broader climate mitigation efforts proper management practices.

Language: Английский

Spatiotemporal distributions of dissolved N2O concentration, diffusive N2O flux and relevant functional genes along a coastal creek in southeastern China DOI
Ping Yang, Yongxin Lin, Hong Yang

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 637, P. 131331 - 131331

Published: May 18, 2024

Language: Английский

Citations

5
The duration of intensive vegetable cultivation regulates the fates of accumulated nitrate under reductive soil disinfestation DOI Creative Commons
Huimin Zhang, Jing Wang, Nyumah Fallah

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Purpose Reductive soil disinfestation (RSD) can remove over-accumulated nitrate (NO3−-N) from topsoil in intensive vegetable fields via elevating NO3−-N consumption processes. The duration of cultivation may affect the relative importance these consuming processes during RSD treatment by altering properties. However, it remains elusive how affects fates treatment. Methods Here, a column experiment labeled with K15NO3 was conducted to investigate effects different ages (5, 10, 20 and 30 years) vegetables on under Results results showed that more than 91.8% added 15NO3−-N removed treatment, regardless years. There trade-off between denitrification leaching into subsoil, both which together accounted for 85.5–97.1% 15NO3−-N, proportion gaseous 15N loss (Pdenitrification) initially increased 5 10 years cultivation, then decreased further ages, but trend reversed subsoil (Pleaching). structural equation model revealed initial carbon/nitrogen ratio had an indirect positive effect Pdenitrification driving nirK abundance Conclusion Overall, our highlight critical role using removing accumulated its Pleaching as cultivation.

Language: Английский

Citations

0
Global peatland greenhouse gas dynamics: state of the art, processes, and perspectives DOI Creative Commons
Ülo Mander, Maarja Öpik, Mikk Espenberg

et al.

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Natural peatlands regulate greenhouse gas (GHG) fluxes through a permanently high groundwater table, causing carbon dioxide (CO2) assimilation but methane (CH4) emissions due to anaerobic conditions. By contrast, drained and disturbed are hotspots for CO2 nitrous oxide (N2O) emissions, while CH4 release is low from drainage ditches. Generally, in low-latitude (tropical subtropical) peatlands, of all GHGs higher than high-latitude (temperate, boreal, Arctic) peatlands. Their inherent dependence on the water regime makes highly vulnerable both direct indirect anthropogenic impacts, including climate change-induced drying, which creating anthro-natural ecosystems. This paper presents state-of-the-art knowledge peatland GHG their key regulating processes, highlighting approaches study spatio-temporal dynamics, integrated methods, human peatlands' perspectives.

Language: Английский

Citations

0
The duration of intensive vegetable cultivation regulates the fates of accumulated nitrate under reductive soil disinfestation DOI
Huimin Zhang, Jing Wang, Nyumah Fallah

et al.

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: April 5, 2025

Language: Английский

Citations

0
Effects of Vegetation Restoration Type on Soil Greenhouse Gas Emissions and Associated Microbial Regulation on the Loess Plateau DOI Creative Commons

Jihai Zhou,

D. Liu,

Shangqi Xu

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(12)

Published: Dec. 1, 2024

ABSTRACT Investigating responses of soil greenhouse gas (GHG) emissions to vegetation restoration is important for global warming mitigation. On the Loess Plateau, a wide range strategies have been implemented control land degradation. However, thorough quantification GHG triggered by different modes insufficient. There still knowledge gap regarding regulation biochemical and microbial processing on emissions. To do so, we compared various types investigated changes in properties as well composition activities. We found that artificial plantation Caragana korshinskii had low carbon dioxide (CO 2 ) emission, while natural grassland high CO emission. The possible explanations could be related higher moisture biomass carbon, greater nitrogen limitation grassland, which was controlled actinomycetes gram‐negative bacteria. Natural nitrous oxide (N O) emission methane (CH 4 uptake, whereas Prunus mume N O Medicago sativa CH respectively. Soil driven fungi gram‐positive bacteria were affected availability dissolved organic carbon. consumption associated with anaerobic moisture. These , generated largest total but smallest leguminous . Overall, our findings suggested N‐fixing shrubland like should encouraged alleviate emissions, practical implications selecting suitable species improve ecological sustainability degraded lands.

Language: Английский

Citations

1
Impact of salinity gradients on nitric oxide emissions and functional microbes in estuarine wetland sediments DOI
Jiang‐Chen Gong, Bing‐Han Li, Chun‐Ying Liu

et al.

Water Research, Journal Year: 2024, Volume and Issue: 273, P. 123046 - 123046

Published: Dec. 25, 2024

Language: Английский

Citations

1
Soil texture contributes to shaping comammox Nitrospira communities in rice-wheat rotation soils DOI

Zhiying Guo,

Jie Liu,

Luyuan Sun

et al.

European Journal of Soil Biology, Journal Year: 2024, Volume and Issue: 122, P. 103661 - 103661

Published: Aug. 12, 2024

Language: Английский

Citations

0
Nitrogen oxides emissions from coastal wetland sediments: Experimental assessment of the influence of vegetation and nitrogen input DOI
Jiang‐Chen Gong, Bing‐Han Li, Chun‐Ying Liu

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 954, P. 176660 - 176660

Published: Oct. 1, 2024

Language: Английский

Citations

0
Methane-driven microbial nitrous oxide production and reduction in denitrifying anaerobic methane oxidation cultures DOI Creative Commons
Pan-Long Lv,

Chi-Hang Wei,

He‐Ping Zhao

et al.

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: unknown, P. 103874 - 103874

Published: Oct. 1, 2024

Language: Английский

Citations

0
Temporal dynamics of soil microbial C and N cycles with GHG fluxes in the transition from tropical peatland forest to oil palm plantation DOI Creative Commons
Frazer Midot,

Kian Mau Goh,

Kok Jun Liew

et al.

Applied and Environmental Microbiology, Journal Year: 2024, Volume and Issue: 91(1)

Published: Dec. 23, 2024

Tropical peatlands significantly influence local and global carbon nitrogen cycles, yet they face growing pressure from anthropogenic activities. Land use changes, such as peatland forests conversion to oil palm plantations, affect the soil microbiome greenhouse gas (GHG) emissions. However, temporal dynamics of microbial community changes their role GHG indicators are not well understood. This study examines peat chemistry, communities, emissions 2016 2020 in a logged-over secondary swamp forest Sarawak, Malaysia, which transitioned an plantation. focuses on genetic composition governing plant litter degradation, methane (CH4), nitrous oxide (N2O) fluxes. Soil CO2 emission increased (doubling approximately 200 mg C m-2 h-1), while CH4 decreased (from µg h-1 slightly negative) following land changes. The N2O plantation reached 1,510 N h-1, higher than previous uses. fluxes were driven by groundwater table, humification levels, C:N ratio, with Methanomicrobia populations dominating methanogenesis Methylocystis main oxidizer. correlated total nitrogen, ratio dominant nirK-type denitrifiers (13-fold nir nosZ) minor nitrification (a threefold increase amoA) Proteobacteria Acidobacteria encoding incomplete denitrification genes potentially impact These findings highlighted complex interactions between communities environmental factors influencing altered tropical ecosystems.IMPORTANCETropical carbon-rich environments that release significant amounts gases when drained or disturbed. assesses change site converted into transformation lowered levels changed properties. Consequently, released dioxide compared As play crucial roles this identified associated diversity, including specific groups related Understanding driving shifts provides baseline information mitigate consequences change, leading broader climate mitigation efforts proper management practices.

Language: Английский

Citations

0