气候变化领域集成服务门户(CCPortal): Suppressing peatland methane production by electron snorkeling through pyrogenic carbon in controlled laboratory incubations

CCPortal

DOI	10.1038/s41467-021-24350-y
	Suppressing peatland methane production by electron snorkeling through pyrogenic carbon in controlled laboratory incubations
	Sun T.; Guzman J.J.L.; Seward J.D.; Enders A.; Yavitt J.B.; Lehmann J.; Angenent L.T.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Northern peatlands are experiencing more frequent and severe fire events as a result of changing climate conditions. Recent studies show that such a fire-regime change imposes a direct climate-warming impact by emitting large amounts of carbon into the atmosphere. However, the fires also convert parts of the burnt biomass into pyrogenic carbon. Here, we show a potential climate-cooling impact induced by fire-derived pyrogenic carbon in laboratory incubations. We found that the accumulation of pyrogenic carbon reduced post-fire methane production from warm (32 °C) incubated peatland soils by 13–24%. The redox-cycling, capacitive, and conductive electron transfer mechanisms in pyrogenic carbon functioned as an electron snorkel, which facilitated extracellular electron transfer and stimulated soil alternative microbial respiration to suppress methane production. Our results highlight an important, but overlooked, function of pyrogenic carbon in neutralizing forest fire emissions and call for its consideration in the global carbon budget estimation. © 2021, The Author(s).
语种	英语
scopus关键词	carbon; methane; pyrogen; carbon; carbon dioxide; methane; accumulation; carbon; carbon budget; methane; peatland; Article; biogeochemical cycling; biomass; budget; climate change; climate warming; clinical laboratory; controlled study; cooling; electric capacitance; electron; electron snorkeling; electron transport; forest; forest fire; incubation time; microbial respiration; nonhuman; oxidation reduction reaction; peatland; pyrolysis; soil; bacterium; biosynthesis; climate; ecosystem; fire; Geobacter; laboratory; metabolism; wildfire; Bacteria; Biomass; Carbon; Carbon Dioxide; Climate; Climate Change; Ecosystem; Electrons; Fires; Geobacter; Laboratories; Methane; Soil; Wildfires
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250659
作者单位	Soil and Crop Sciences, School of Integrative Plant Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, United States; Center for Applied Geosciences, University of Tübingen, Tübingen, Germany; Department of Biological and Environmental Engineering, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, United States; Vale Living with Lakes Centre and the Department of Biology, Laurentian University, Sudbury, ON, Canada; Department of Natural Resources, Cornell University, Ithaca, NY, United States; Atkinson Center for a Sustainable Future, Cornell University, Ithaca, NY, United States
推荐引用方式 GB/T 7714	Sun T.,Guzman J.J.L.,Seward J.D.,et al. Suppressing peatland methane production by electron snorkeling through pyrogenic carbon in controlled laboratory incubations[J],2021,12(1).
APA	Sun T..,Guzman J.J.L..,Seward J.D..,Enders A..,Yavitt J.B..,...&Angenent L.T..(2021).Suppressing peatland methane production by electron snorkeling through pyrogenic carbon in controlled laboratory incubations.Nature Communications,12(1).
MLA	Sun T.,et al."Suppressing peatland methane production by electron snorkeling through pyrogenic carbon in controlled laboratory incubations".Nature Communications 12.1(2021).