Mitigation of methane emission in a rice paddy field amended with biochar-based slow-release fertilizer

Dong, Dan; Li, Jiong; Ying, Shanshan; Wu, Jiaping; Han, Xingguo; Teng, Yuanxin; Zhou, Miaorong; Ren, Yi; Jiang, Peikun

doi:10.1016/j.scitotenv.2021.148460

Cited by 47 publications

(17 citation statements)

References 49 publications

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“…Biochar has been well-reported to mitigate CH 4 emissions from paddy soil (Dong et al 2021;Jiang et al 2021;Qi et al 2021b). The mechanisms of CH 4 emission mitigation by biochar mainly included: (i) biochar inhibited the activity and abundance of methanogens but stimulated those of methanotrophs (Nan et al 2021); (ii) biochar increased the adsorption of CH 4 in soil .…”

Section: Biochar For Global Climate Change Mitigationmentioning

confidence: 99%

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Singh

Wang

et al. 2023

Biochar

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As a bioproduct from the thermal decomposition of biomass, biochar has various applications in diversified field. In this study, a bibliometric analysis was conducted to visualize the current research status and trends of biochar research. A total of 5535 documents were collected from the Web of Science Core Collection and subjected to visualization analysis for the biochar field's development in 2021 with CiteSpace software. The visual analysis results demonstrate that the number of publications expanded dramatically in 2021, and the growth trend would continue. China and USA were the most contributing countries in biochar research in terms of the number of publications. Based on the keyword co-occurrence analyses, “Biochar for toxic metal immobilization”, “Biochar-based catalyst for biofuel production”, “Biochar for global climate change mitigation”, “Biochar for salinity and drought stress amelioration”, “Biochar amendment in composting”, and “Biochar as additives in anaerobic digestion” were the main research trends and hotspots in this field in 2021. This indicates that the biochar research was multidisciplinary. Regarding the research hotspots, the employment of biochar as heterogeneous catalysts for biofuel production gained great attention in 2021. On the contrary, bioremediation using functional bacteria immobilized on biochar and biochar-assisted advanced oxidation process were well-studied but with less frequency than other topics in 2021. Furthermore, the future research was proposed for green and sustainable applications of biochar. This review provides a comprehensive overview of the research frontiers, the evolution of research hotspots, and potential future research directions in the biochar field. Graphical Abstract

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Section: Biochar For Global Climate Change Mitigationmentioning

confidence: 99%

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Singh

Wang

et al. 2023

Biochar

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“…(2021) Rice straw biochar Post Leaching and field scale experiment Rice ( Oryza sativa L.) 164 kg ha −1 Reduced N losses No significant change in rice yield Dong et al. (2020) Rice straw biochar Post Field experiment Rice ( Oryza sativa L.) Clay loam Ultisol 750 kg ha −1 1500 kg ha −1 2700 kg ha −1 Reduced CH 4 emission by 33.4% Dong et al. (2021) Poultry litter and bamboo biochar Post Pot experiment Ginger ( Zingiber officinale Canton) Black dermosols 7.5 t ha −1 increased soil P, K, Mg and Ca.…”

Section: Effects Of Biochar-based Fertilizers On Soil Chemical Propertiesmentioning

confidence: 99%

“…The application of BCFs has been proposed as an effective approach to reduce GHG emissions. Dong et al. (2021) showed that a slow-release fertilizer produced from rice straw biochar, urea, NH 4 H 2 PO 4 and K 2 SO 4 significantly decreased methane (CH 4 ) emission by 33.4% during the whole rice growing season when compared to other fertilizers.…”

Section: Effects On Greenhouse Gas (Ghg) Emissionsmentioning

confidence: 99%

A scoping review on biochar-based fertilizers: enrichment techniques and agro-environmental application

Ndoung

Figueiredo

Ramos

2021

Heliyon

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Biochar is a carbonized biomass that can be used as a soil amendment. However, the exclusive use of biochar may present some limitations, such as the lack of nutrients. Thus, biochar enrichment techniques have made it possible to obtain biochar-based fertilizers (BCFs), with great potential to improve soil fertility. Nevertheless, there is still a lack of information about the description, advantages, and limitations of the methods used for biochar enrichment. This review provides a comprehensive overview of the production methods of enriched biochar and its performance in agriculture as a soil amendment. Studies demonstrate that the application of BCF is more effective in improving soil properties and crop yields than the exclusive application of pure biochar or other fertilizers. The post-pyrolysis method is the most used technique for enriching biochar. Future studies should focus on understanding the mechanisms of the long-term application of BCFs.

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“…The contribution of rice paddies to global warming is of increasing concern as a major methane emission source. Masuda et al (2018) recently reported the composition of mcrA and pmoA transcripts in paddy soil, and a compositional analysis of the mcrA , pmoA , and 16S rRNA genes was performed ( Lee et al , 2014 ; Yuan et al , 2018 ; Dang et al , 2021 ). However, there were limitations in the study that revealed the compositional shift of methanogens and methanotrophs in paddy soil ( Lee et al , 2014 ).…”

Section: Discussionmentioning

confidence: 99%

Mitigation of Paddy Field Soil Methane Emissions by Betaproteobacterium <i>Azoarcus</i> Inoculation of Rice Seeds

et al. 2022

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Paddy fields are a major source of atmospheric methane, a greenhouse gas produced by methanogens and consumed by methanotrophs in flooded soil. The inoculation of rice seeds with the bacterium Azoarcus sp. KH32C alters the rice root-associated soil bacterial community composition. The present study investigated the effects of KH32C-inoculated rice cultivation on soil methanogens and methanotrophs involved in methane emissions from a rice paddy field. KH32Cinoculated and non-inoculated rice (cv. Nipponbare) were cultivated in a Japanese rice paddy with and without nitrogen fertilizer. Measurements of methane emissions and soil solution chemical properties revealed increases in methane flux over the waterlogged period with elevations in the concentrations of dissolved methane, dissolved organic carbon, and ferrous iron, which is an indicator of soil reduction levels. Reverse transcription quantitative PCR and amplicon sequencing were used to assess the transcription of the methyl-coenzyme M reductase gene (mcrA) from methanogens and the particulate methane monooxygenase gene (pmoA) from methanotrophs in paddy soil. The results obtained showed not only the transcript copy numbers, but also the compositions of mcrA and pmoA transcripts were related to methane flux. KH32Cinoculated rice cultivation recruited soil methanogens and methanotrophs that suppressed high methane synthesis, increased methane consumption, and decreased methane emissions by 23.5 and 17.2% under non-fertilized and nitrogen-fertilized conditions, respectively, while maintaining rice grain yield. The present study demonstrated the mitigation of paddy field methane emissions arising from the use of KH32C in rice cultivation due to its influence on the compositions of soil methanogen and methanotroph populations.

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Mitigation of methane emission in a rice paddy field amended with biochar-based slow-release fertilizer

Cited by 47 publications

References 49 publications

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

A scoping review on biochar-based fertilizers: enrichment techniques and agro-environmental application

Mitigation of Paddy Field Soil Methane Emissions by Betaproteobacterium <i>Azoarcus</i> Inoculation of Rice Seeds

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