Agricultural Methane Emissions in China: Inventories, Driving Forces and Mitigation Strategies

Duan, Yang; Gao, Yueming; Zhao, Jing; Xue, Yinglan; Zhang, Wei; Wu, Wenjun; Jiang, Hongqiang; Cao, Dong

doi:10.1021/acs.est.3c04209

Cited by 24 publications

(4 citation statements)

References 58 publications

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“…CH 4 emission heterogeneity across coal mines in 2019 appeared to be more evident than that from other anthropogenic sources (e.g., thermal power plants, iron, and steel plants), as reported in previous studies. ,,− Mitigation of coal CH 4 emissions may be possible by targeting ultra-emitters with high emission intensities, giving us valuable time to manage other greenhouse gases and emission sources that are more difficult to control in the short term. For long-term climate action, the key strategy to deeply cut coal CH 4 emissions continues to be reducing coal use and production through the energy transition to renewable energy sources.…”

Section: Discussionmentioning

confidence: 99%

Targeting Ultra-Emitters for Effective Methane Mitigation in China’s Coal Sector

Wang,

Zheng,

et al. 2024

ACS EST Air

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The energy system fuels climate change as the largest emitter of global greenhouse gases, while a lack of transparent, infrastructure-level information undermines efforts to cut emissions. Coal mining has been the largest emitter of methane (CH4) in China over the past 10 years, which is not tracked at the mine level, and effective mitigation pathways have yet to be established. Herein, we develop a state-of-the-art CH4 emission database, comprising 3343 active coal mines in China, by harmonizing multisource information. The results suggest that China’s coal mines emitted 15.8 ± 5.1 million metric tons CH4 yr–1 in 2019. Those with CH4 emission intensities >2 standard deviations above the national mean accounted for 4% of China’s coal production, yet they generated 23% of China’s coal CH4 emissions. We project a steady decline in China’s coal CH4 emissions by >75% in 2100 compared to 2019 levels under three different scenarios, due to reduced coal demand during energy transition. Targeting ultra-emitters for mine closure will accelerate emission reductions in the midterm and achieve deep CH4 emission cuts by >92% in 2100, which buys us time to control global warming. Our idealized mine closure strategy serves as a cost-effective CH4 mitigation strategy to enable swift climate action.

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Section: Discussionmentioning

confidence: 99%

Targeting Ultra-Emitters for Effective Methane Mitigation in China’s Coal Sector

Wang,

Zheng,

et al. 2024

ACS EST Air

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“…Since rice paddies are typically flooded for cultivation, they also create ideal conditions for an oxygendepleted environment that favors the growth of methane-producing microorganisms, which thrive in the waterlogged soil and release methane into the atmosphere. As a staple crop globally, rice cultivation adds to the overall methane emissions from agriculture [26,27].…”

Section: Methane Emissionsmentioning

confidence: 99%

Smart Agriculture and Greenhouse Gas Emission Mitigation: A 6G-IoT Perspective

Polymeni,

Skoutas,

Sarigiannidis

et al. 2024

Electronics

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Smart farming has emerged as a promising approach to address the agriculture industry’s significant contribution to greenhouse gas (GHG) emissions. However, the effectiveness of current smart farming practices in mitigating GHG emissions remains a matter of ongoing debate. This review paper provides an in-depth examination of the current state of GHG emissions in smart farming, highlighting the limitations of existing practices in reducing GHG emissions and introducing innovative strategies that leverage the advanced capabilities of 6G-enabled IoT (6G-IoT). By enabling precise resource management, facilitating emission source identification and mitigation, and enhancing advanced emission reduction techniques, 6G-IoT integration offers a transformative solution for managing GHG emissions in agriculture. However, while smart agriculture focuses on technological applications for immediate efficiency gains, it also serves as a crucial component of sustainable agriculture by providing the tools necessary for long-term environmental supervision and resource sustainability. As a result, this study also contributes to sustainable agriculture by providing insights and guiding future advancements in smart farming, particularly in the context of 6G-IoT, to develop more effective GHG mitigation strategies for smart farming applications, promoting a more sustainable agricultural future.

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“…Methane (CH 4 ) is an important greenhouse gas after carbon dioxide (CO 2 ) with a global warming potential of 85 or 32 for 20- or 100-y time horizons, respectively ( IPCC, 2021 ). Rice fields stand out as one of the major anthropogenic contributors to atmospheric CH 4 , accounting for 14.1 to 48% of total agricultural CH 4 emissions ( Carlson et al, 2017 ; Saunois et al, 2020 ; Gupta et al, 2021 ; Li et al, 2022 ; Duan et al, 2023 ; Qian et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Unraveling the impact of lanthanum on methane consuming microbial communities in rice field soils

Liu,

Wei,

Dong

et al. 2024

Front. Microbiol.

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The discovery of the lanthanide requiring enzymes in microbes was a significant scientific discovery that opened a whole new avenue of biotechnological research of this important group of metals. However, the ecological impact of lanthanides on microbial communities utilizing methane (CH4) remains largely unexplored. In this study, a laboratory microcosm model experiment was performed using rice field soils with different pH origins (5.76, 7.2, and 8.36) and different concentrations of La3+ in the form of lanthanum chloride (LaCl3). Results clearly showed that CH4 consumption was inhibited by the addition of La3+ but that the response depended on the soil origin and pH. 16S rRNA gene sequencing revealed the genus Methylobacter, Methylosarcina, and Methylocystis as key players in CH4 consumption under La3+ addition. We suggest that the soil microbiome involved in CH4 consumption can generally tolerate addition of high concentrations of La3+, and adjustments in community composition ensured ecosystem functionality over time. As La3+ concentrations increase, the way that the soil microbiome reacts may not only differ within the same environment but also vary when comparing different environments, underscoring the need for further research into this subject.

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Agricultural Methane Emissions in China: Inventories, Driving Forces and Mitigation Strategies

Cited by 24 publications

References 58 publications

Targeting Ultra-Emitters for Effective Methane Mitigation in China’s Coal Sector

Targeting Ultra-Emitters for Effective Methane Mitigation in China’s Coal Sector

Smart Agriculture and Greenhouse Gas Emission Mitigation: A 6G-IoT Perspective

Unraveling the impact of lanthanum on methane consuming microbial communities in rice field soils

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