Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands

doi:10.1007/s10533-019-00547-8

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	Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands
	Zistl-Schlingmann, Marcus ; Feng, Jinchao 2; Kiese, Ralf ; Stephan, Ruth ; Zuazo, Pablo ; Willibald, Georg ; Wang, Changhui 2; Butterbach-Bahl, Klaus ; Dannenmann, Michael
刊名	BIOGEOCHEMISTRY
	2019
卷号	143 期号:1 页码:15-30
关键词	Climate change Denitrification Dinitrogen Nitrous oxide Fertilizer emissions temperate grassland
ISSN号	0168-2563
DOI	10.1007/s10533-019-00547-8
文献子类	Article
英文摘要	While emissions of nitric oxide (NO), ammonia (NH3) and nitrous oxide (N2O) from grassland soils have been increasingly well constrained, soil dinitrogen (N-2) emissions are poorly understood. However, N-2 losses might dominate total gaseous nitrogen (N) losses. Knowledge on N losses is key for the development of climate-adapted management that balances agronomic and environmental needs. Hence, we quantified all gaseous N losses from a montane grassland in Southern Germany both for ambient climatic conditions and for a climate change treatment (+2 degrees C MAT, -300mm MAP). Monthly measurements of soil N-2 emissions of intact soil cores revealed that those exceeded by far soil N2O emissions and averaged at 350 +/- 101 (ambient climate) and 738 +/- 197 mu gN m(-2) h(-1) (climate change). Because these measurements did not allow to quantify emission peaks after fertilization, an additional laboratory experiment was deployed to quantify the response of NH3, NO, N2O, and N-2 emissions in sub daily temporal resolution to a typical slurry fertilization event (51kgN ha(-1)). Our results revealed that total N gas losses amounted to roughly half of applied slurry-N. Surprisingly, N-2 but not NH3 dominated fertilizer N losses, with N-2 emissions accounting for 16-21kg or 31-42% of the applied slurry-N, while NH3 volatilization (3.5kg), N2O (0.2-0.5kg) and NO losses (0-0.2kg) were of minor importance. Though constraining annual N-2 loss remained uncertain due to high spatiotemporal variability of fluxes, we show that N-2 losses are a so far overlooked key component of the N balance in montane grasslands, which needs to be considered for developing improved grassland management strategies targeted at increasing N use efficiency.
学科主题	Environmental Sciences ; Geosciences, Multidisciplinary
电子版国际标准刊号	1573-515X
出版地	DORDRECHT
WOS关键词	NITROUS-OXIDE ; CLIMATE-CHANGE ; N2O EMISSIONS ; MEASURING DENITRIFICATION ; AMMONIA EMISSION ; SOIL ; CARBON ; FLUX ; NITRIFICATION ; MANAGEMENT
WOS研究方向	Environmental Sciences & Ecology ; Geology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000460883500002
资助机构	Helmholtz-BMBF TERENO initiative ; BMBF SUSALPS projectFederal Ministry of Education & Research (BMBF) ; FORKAST project of the Bavarian government ; DFG research unit DASIMGerman Research Foundation (DFG)
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19898]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Atmospher Environm Res IMK IFU, Kreuzeckbahnstr 19, D-82467 Garmisch Partenkirchen, Germany
推荐引用方式 GB/T 7714	Zistl-Schlingmann, Marcus,Feng, Jinchao,Kiese, Ralf,et al. Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands[J]. BIOGEOCHEMISTRY,2019,143(1):15-30.
APA	Zistl-Schlingmann, Marcus.,Feng, Jinchao.,Kiese, Ralf.,Stephan, Ruth.,Zuazo, Pablo.,...&Dannenmann, Michael.(2019).Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands.BIOGEOCHEMISTRY,143(1),15-30.
MLA	Zistl-Schlingmann, Marcus,et al."Dinitrogen emissions: an overlooked key component of the N balance of montane grasslands".BIOGEOCHEMISTRY 143.1(2019):15-30.