Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China

NWIPB OpenIR

	Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China
	Jiang, Chunming 1,2,4; Yu, Guirui 1; Fang, Huajun 1; Cao, Guangmin 3; Li, Yingnian 3
	2010-08-01
发表期刊	ATMOSPHERIC ENVIRONMENT
卷号	44 期号:24 页码:2920-2926
文章类型	Article
摘要	An increasing nitrogen deposition experiment (2 g N m(-2) year(-1)) was initiated in an alpine meadow on the Qinghai-Tibetan Plateau in May 2007. The greenhouse gases (GHGs), including CO2, CH4 and N2O, was observed in the growing season (from May to September) of 2008 using static chamber and gas chromatography techniques. The CO2 emission and CH4 uptake rate showed a seasonal fluctuation, reaching the maximum in the middle of July. We found soil temperature and water-filled pore space (WFPS) were the dominant factors that controlled seasonal variation of CO2 and CH4 respectively and lacks of correlation between N2O fluxes and environmental variables. The temperature sensitivity (Q(10)) of CO2 emission and CH4 uptake were relatively higher (3.79 for CO2, 3.29 for CH4) than that of warmer region ecosystems, indicating the increase of temperature in the future will exert great impacts on CO2 emission and CH4 uptake in the alpine meadow. In the entire growing season, nitrogen deposition tended to increase N2O emission, to reduce CH4 uptake and to decrease CO2 emission, and the differences caused by nitrogen deposition were all not significant (p < 0.05). However, we still found significant difference (p < 0.05) between the control and nitrogen deposition treatment at some observation dates for CH4 rather than for CO2 and N2O, implying CH4 is most susceptible in response to increased nitrogen availability among the three greenhouse gases. In addition, we found short-term nitrogen deposition treatment had very limited impacts on net global warming potential (GWP) of the three GHGs together in term of CO2-equivalents. Overall, the research suggests that longer study periods are needed to verify the cumulative effects of increasing nitrogen deposition on GHG fluxes in the alpine meadow. (C) 2010 Elsevier Ltd. All rights reserved.
关键词	Anthropogenic Nitrogen Deposition Co2 Ch4 N2o q(10) Water-filled Pore Space Alpine Meadow Qinghai-tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
关键词[WOS]	TEMPERATURE-DEPENDENT Q(10) ; REDUCES SOIL RESPIRATION ; METHANE OXIDATION ; OXIDE EMISSIONS ; FOREST SOIL ; CARBON-DIOXIDE ; FERTILIZED GRASSLAND ; AGRICULTURAL SOILS ; INNER-MONGOLIA ; WATER CONTENT
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000280277700015
引用统计	被引频次：163[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6889
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr,Chinese Ecosyst Res Network, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810008, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, Lab Nutrients Recycling, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Chunming,Yu, Guirui,Fang, Huajun,et al. Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China[J]. ATMOSPHERIC ENVIRONMENT,2010,44(24):2920-2926.
APA	Jiang, Chunming,Yu, Guirui,Fang, Huajun,Cao, Guangmin,&Li, Yingnian.(2010).Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China.ATMOSPHERIC ENVIRONMENT,44(24),2920-2926.
MLA	Jiang, Chunming,et al."Short-term effect of increasing nitrogen deposition on CO2, CH4 and N2O fluxes in an alpine meadow on the Qinghai-Tibetan Plateau, China".ATMOSPHERIC ENVIRONMENT 44.24(2010):2920-2926.