Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Tang, Haiming; Xiao, Xiaoping; Li, Chao; Shi, Lihong; Cheng, Kaikai; Li, Weiyan; Wen, Li; Xu, Yongchang; Wang, Ke

doi:10.1038/s41598-021-84425-0

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…In the present study, NT treatment decreased SOC content in the paddy field compared to RT and CT treatments, suggesting that CH 4 emission from the paddy field with no-tillage practice decreased. Some results indicated that aerobic methanotrophs and anaerobic methanogens were obviously influenced by the rice root soil environment [14]. RT and CT treatments destroyed soil structure and reduced gas diffusivity at the plough layer; therefore, soil CH 4 uptake and CH 4 oxidation were decreased [26].…”

Section: Effects Of Tillage Management On Ch 4 and N 2 O Emissionsmentioning

confidence: 99%

“…Furthermore, some results indicated that N 2 O emission from paddy fields with CT treatment was lower than that of NT treatment with crop residue incorporation [10,13]. Tang et al [14] showed that rice yield was decreased with NT practice, compared with CT and RT practices. Global warming potential (GWP) was generally considered a vital indicator for the effects of GHG emissions, with the GWP of CO 2 defined as 1.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Tang¹,

Li²,

Shi³

et al. 2022

Agronomy

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Soil carbon (C) content plays an important role in maintaining or increasing soil quality and soil fertility. However, the impacts of different tillage and crop residue incorporation managements on greenhouse gas (GHG) emissions from paddy fields under the double-cropping rice (Oryza sativa L.) system in southern China still need further study. Therefore, a field experiment was conducted to determine the impacts of different short-term (5-years) tillage and crop residue incorporation managements on soil organic carbon (SOC) content, SOC stock, and GHG emissions from paddy fields under the double-cropping rice system in southern China. The field experiment included four tillage treatments: rotary tillage with all crop residues removed as a control (RTO), conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), and no-tillage with crop residue retention (NT). These results indicated that SOC stock in paddy fields with CT, RT, and NT treatments increased by 4.64, 3.60, 3.50 Mg ha−1 and 4.68, 4.21, and 4.04 Mg ha−1 in 2019 and 2020, respectively, compared with RTO treatment. The results showed that early rice and late rice yield with CT treatment increased by 7.22% and 19.99% in 2019 and 6.19% and 6.40% in 2020, respectively, compared with RTO treatment. A two-year (2019–2020) investigation of GHG results indicated that methane emissions from paddy fields with NT treatment were decreased, but nitrous oxide emissions from paddy fields were increased. The lowest mean global warming potential (GWP) and per yield GWP carbon dioxide were found with NT treatment, compared to RT and CT treatments. Therefore, it was a beneficial practice for maintaining SOC stock and decreasing GHG mitigation under the double-cropping rice system in southern China by applying no-tillage with crop residue retention management.

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Section: Effects Of Tillage Management On Ch 4 and N 2 O Emissionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Tang¹,

Li²,

Shi³

et al. 2022

Agronomy

Self Cite

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“…Given that organic matter decomposition increases via microbial enzyme production [25], the slightly increased alkaline pH and decreased water content in spring [21] may have created the optimum conditions for invertase activity in the topsoil rhizosphere. Meanwhile, dissolved C content decreases with an increase in microbial biomass and C use in the rhizosphere [26], subsequently reducing invertase activity (Figure 6).…”

Section: Response Of Enzyme Activities In the Rhizosphere And Bulk So...mentioning

confidence: 99%

Organic Mulching Increases Microbial Activity in Urban Forest Soil

Sun

Liao

et al. 2022

Forests

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Interactions between C accumulation, resulting from plant residue mulching, and the accelerated decomposition of litter and soil organic matter due to higher enzyme activities remain poorly understood, particularly in urban forests. Here, the activities of four enzymes associated with carbon (C) and nitrogen (N) cycling after organic mulching were investigated in the rhizosphere and bulk soil of a 15-year-old Ligustrum lucidum urban forest. The enzymatic activities in the rhizosphere were closely correlated to those in bulk soil, however, they were more strongly affected by organic mulching and exhibited faster C and nutrient cycling. Moreover, the activity of urease in the rhizosphere and peroxidase in the bulk soil in autumn, as well as invertase in the rhizosphere in spring, decreased. Microbial C and N were most responsible for the observed increase in invertase activity in spring, during which microorganisms exhibited rapid growth and the highest activities, whereas soil organic C regulated urease activity in winter. Additionally, the activity of dehydrogenase increased by up to 75%; the degree of increase was typically dependent on the mulching amount. Generally, invertase and dehydrogenase activity increased with the abundance of dissolved organic matter and microbial biomass, whereas peroxidase exhibited the opposite trend. Taken together, these findings indicate that organic mulching efficiently increases enzymatic activity, particularly within the rhizosphere, thus accelerating soil C and N cycling. Hence, mulching may represent an effective measure for urban forest management and soil conservation.

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“…Research on the spatiotemporal variations and influencing factors of carbon sinks/sources in agroecosystems often centers on the analysis of differences in natural endowment, socio-economic policies, and field management practices to elucidate the mechanisms affecting carbon source-sink dynamics and pathways for reducing emissions. Additionally, a few scholars have explored the differences in net carbon sequestration under different farming practices and irrigation methods [24,25].…”

Section: Introductionmentioning

confidence: 99%

Development in Agricultural Ecosystems’ Carbon Emissions Research: A Visual Analysis Using CiteSpace

Wu,

Miao,

Liu

2024

Agronomy

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Farmland ecosystems represent a vital carbon source and sink within terrestrial ecosystems. The investigation into the characteristics of carbon emissions and their influencing factors within farmland ecosystems is crucial for the realization of carbon reduction and the promotion of low-carbon development. This study leveraged the analytical prowess of CiteSpace software (version 6.1.5) to examine a comprehensive body of 2805 scholarly works related to carbon emissions within agricultural ecosystems, as documented in the Web of Science Core Database from 1991 through to 2023. Through a visual dissection of data based on national, institutional, and thematic dimensions, the study elucidated emergent focal points and evolving trajectories within this scholarly domain. The findings revealed that current scholarly discussions on carbon emissions from agricultural lands have primarily focused on three key areas: the factors that influence these emissions, the possibilities for their reduction, and the subsequent environmental impacts. Focal points of research have predominantly centered on four key themes: “greenhouse gas emissions from farmland ecosystems”, “carbon emission models for farmland ecosystems”, ”carbon sequestration in farmland ecosystems”, and ”sustainable development in agricultural ecosystems”. The academic perspective has gradually shifted from a broad overview of carbon emissions towards a detailed examination of the determinants of emissions and the efficiency of agricultural resource utilization. Looking forward, it is crucial to explore the mechanisms behind high-carbon agricultural practices and to establish their optimal operational thresholds. The focus of research is shifting from macro carbon emissions to the analysis of emission factors and the efficiency of agricultural input use. Future efforts should emphasize exploring the mechanisms of the environmental impacts caused by high-carbon agricultural inputs and the optimal input levels, refining emission reduction methods in agricultural ecosystems, and promoting collaboration and exchange among researchers worldwide.

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Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Cited by 7 publications

References 30 publications

Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Organic Mulching Increases Microbial Activity in Urban Forest Soil

Development in Agricultural Ecosystems’ Carbon Emissions Research: A Visual Analysis Using CiteSpace

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