气候变化领域集成服务门户(CCPortal): Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands

CCPortal

DOI	10.1111/ele.13480
	Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands
	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.
发表日期	2020
ISSN	1461023X
起始页码	821
结束页码	830
卷号	23 期号:5
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
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
语种	英语
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/204307
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...
推荐引用方式 GB/T 7714	Zhang L.,Yuan F.,Bai J.,et al. Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands[J],2020,23(5).
APA	Zhang L..,Yuan F..,Bai J..,Duan H..,Gu X..,...&Xu X..(2020).Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands.Ecology Letters,23(5).
MLA	Zhang L.,et al."Phosphorus alleviation of nitrogen-suppressed methane sink in global grasslands".Ecology Letters 23.5(2020).