Climatic factors and fertilization rates co-regulate anaerobic methane oxidation driven by multiple electron acceptors in Chinese paddy fields

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 436, P. 140600 - 140600

Published: Jan. 1, 2024

Language: Английский

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Temperature sensitivity of anaerobic methane oxidation versus methanogenesis in paddy soil: Implications for the CH ₄ balance under global warming

Global Change Biology, Journal Year: 2021, Volume and Issue: 28(2), P. 654 - 664

Published: Oct. 17, 2021

The global methane (CH4 ) budget is based on a sensitive balance between methanogenesis and CH4 oxidation (aerobic anaerobic). response of these processes to climate warming, however, not quantified. This largely reflects our lack knowledge about the temperature sensitivity (Q10 anaerobic (AOM)-a ubiquitous process in soils. Based 13 labeling experiment, we determined rate, Q10 activation energy AOM paddy soil at three temperatures (5, 20, 35°C). rates increased exponentially with temperature, whereby rate was significantly lower than methanogenesis. Both dropped from 5-20 20-35°C, indicating that highly temperature-dependent microbial process. Nonetheless, were similar 5-35°C, implying comparable dependence soil. continuous increase over 28-day experiment successive utilization electron acceptors according their thermodynamic efficiency. basic constant for calculated be 0.1 units each 3.2 kJ mol-1 energy. We estimate soils consume 2.2~5.5 Tg per year scale. Considering results conjunction literature data, terrestrial total consumes ~30% overall production. Our data corroborate As methanogenesis, it will fully compensate an production under warming.

Language: Английский

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Methane oxidation activity inhibition via high amount aged biochar application in paddy soil

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 796, P. 149050 - 149050

Published: July 15, 2021

Language: Английский

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Interacting Bioenergetic and Stoichiometric Controls on Microbial Growth

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: May 17, 2022

Microorganisms function as open systems that exchange matter and energy with their surrounding environment. Even though mass (carbon nutrients) exchanges are tightly linked, there is a lack of integrated approaches combine these fluxes explore how they jointly impact microbial growth. Such links essential to predicting the growth rate microorganisms varies, especially when stoichiometry carbon- (C) nitrogen (N)-uptake not balanced. Here, we present theoretical framework quantify for conditions C-, N-, energy-(co-) limitations. We use this show C:N ratio degree reduction organic (OM), which also electron donor, availability acceptors (EAs), different sources N together control under C, nutrient, energy-limited conditions. peaks at intermediate values OM oxic C-limited conditions, but N-limited Under N-poor OM, higher inorganic (NInorg)-source ammonium compared nitrate due additional energetic cost involved in reduction. anoxic both EA NInorg-source, rates denitrifiers microbes performing dissimilatory ammonia (DNRA) determined by nitrate-availability. Consistent data, DNRA predicted foster extreme nitrate-limitation reduced whereas favored becomes more available presence oxidized OM. Furthermore, catabolism coupled low yielding EAs (e.g., sulfate) because carbon efficiency (CUE). However, CUE decreases nutrient demand growth, thereby reducing N-limitation. conclude bioenergetics provides useful conceptual explaining metabolisms multiple resource-limitations.

Language: Английский

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Changes in methane production and oxidation in rice paddy soils induced by biochar addition

Applied Soil Ecology, Journal Year: 2022, Volume and Issue: 179, P. 104585 - 104585

Published: July 4, 2022

Language: Английский

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