globalchange  > 气候变化与战略
DOI: 10.1111/ele.13480
论文题名:
Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands
作者: Zhang L.; Yuan F.; Bai J.; Duan H.; Gu X.; Hou L.; Huang Y.; Yang M.; He J.-S.; Zhang Z.; Yu L.; Song C.; Lipson D.A.; Zona D.; Oechel W.; Janssens I.A.; Xu X.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期:5
起始页码: 821
结束页码: 830
语种: 英语
中文关键词: Grassland ; methane ; nitrogen ; phosphorus ; substrate competition theory
英文关键词: methane ; nitrogen ; phosphorus ; ecosystem ; grassland ; meta analysis ; soil ; Ecosystem ; Grassland ; Methane ; Nitrogen ; Phosphorus ; Soil
英文摘要: Grassland ecosystems account for more than 10% of the global CH4 sink in soils. A 4-year field experiment found that addition of P alone did not affect CH4 uptake and experimental addition of N alone significantly suppressed CH4 uptake, whereas concurrent N and P additions suppressed CH4 uptake to a lesser degree. A meta-analysis including 382 data points in global grasslands corroborated these findings. Global extrapolation with an empirical modelling approach estimated that contemporary N addition suppresses CH4 sink in global grassland by 11.4% and concurrent N and P deposition alleviates this suppression to 5.8%. The P alleviation of N-suppressed CH4 sink is primarily attributed to substrate competition, defined as the competition between ammonium and CH4 for the methane mono-oxygenase enzyme. The N and P impacts on CH4 uptake indicate that projected increases in N and P depositions might substantially affect CH4 uptake and alter the global CH4 cycle. © 2020 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166747
Appears in Collections:气候变化与战略

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作者单位: College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China; Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; Biology Department, San Diego State University, San Diego, CA 92182, United States; State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; School of Environment, Beijing Normal University, Beijing, 100875, China; Key Laboratory of Watershed Geographic Sciences, Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Division of Epidemiology and Biostatistics, San Diego State University, San Diego, CA 92182, United States; Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, China; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Department of Biology, University of Antwerp, Wilrijk, Belgium

Recommended Citation:
Zhang L.,Yuan F.,Bai J.,et al. Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands[J]. Ecology Letters,2020-01-01,23(5)
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