Low-level nitrogen deposition significantly inhibits methane uptake from an alpine meadow soil on the Qinghai-Tibetan Plateau

	Low-level nitrogen deposition significantly inhibits methane uptake from an alpine meadow soil on the Qinghai-Tibetan Plateau
	Fang, Huajun 1; Cheng, Shulan 2; Yu, Guirui 1; Cooch, Jules 3; Wang, Yongsheng 1; Xu, Minjie 2; Li, Linsen 2; Dang, Xusheng 1; Li, Yingnian 4
刊名	geoderma
	2014
卷号	213 页码:444-452
关键词	Alpine meadow Atmospheric N deposition Controlling factors Soil CH4 uptake Soil N availability
ISSN号	0016-7061
中文摘要	it is crucial to understand the effects of enhanced nitrogen (n) deposition on soil methane (ch4) uptake to develop a better comprehension of carbon (c) dynamics in terrestrial ecosystems. a two-year field study was conducted to assess the effects of various forms of n (nh4+ and n-3(-)) and associated n deposition rates (0, 10,20 and 40 kg n ha(-1) yr(-1)) on alpine meadow soil ch4 fluxes on the qinghai-tibetan plateau, china. soil ch4 fluxes, soil temperature, and soil moisture were monitored weekly using the static chamber technique and gas chromatography. soil inorganic n pools, soil ph and aboveground biomass were measured monthly to examine the key controlling factors of soil ch4 flux. our results showed that n addition significantly promoted plant growth and changed soil water-filled pore space (wfps), but did not alter soil inorganic n storages over the short term. low rates of n addition significantly decreased the seasonal amount of ch4 uptake by 8.6% compared with the control. soil ch4 fluxes were mainly determined by soil wfps, followed by inorganic n availability. n addition increased the contribution of soil wfps, ph and soil no3- storage. the observed reduction in ch4 uptake caused by n addition may be largely due to a decrease in physical diffusion, as the biochemical inhibition effects on methanotrophic bacteria are minor. these results suggest that soil inorganic n is a regulatory factor of soil ch4 uptake, and its promotion or inhibition to soil ch4 uptake depends on the n status in terrestrial ecosystems. (c) 2013 elsevier b.v. all rights reserved.
英文摘要	it is crucial to understand the effects of enhanced nitrogen (n) deposition on soil methane (ch4) uptake to develop a better comprehension of carbon (c) dynamics in terrestrial ecosystems. a two-year field study was conducted to assess the effects of various forms of n (nh4+ and n-3(-)) and associated n deposition rates (0, 10,20 and 40 kg n ha(-1) yr(-1)) on alpine meadow soil ch4 fluxes on the qinghai-tibetan plateau, china. soil ch4 fluxes, soil temperature, and soil moisture were monitored weekly using the static chamber technique and gas chromatography. soil inorganic n pools, soil ph and aboveground biomass were measured monthly to examine the key controlling factors of soil ch4 flux. our results showed that n addition significantly promoted plant growth and changed soil water-filled pore space (wfps), but did not alter soil inorganic n storages over the short term. low rates of n addition significantly decreased the seasonal amount of ch4 uptake by 8.6% compared with the control. soil ch4 fluxes were mainly determined by soil wfps, followed by inorganic n availability. n addition increased the contribution of soil wfps, ph and soil no3- storage. the observed reduction in ch4 uptake caused by n addition may be largely due to a decrease in physical diffusion, as the biochemical inhibition effects on methanotrophic bacteria are minor. these results suggest that soil inorganic n is a regulatory factor of soil ch4 uptake, and its promotion or inhibition to soil ch4 uptake depends on the n status in terrestrial ecosystems. (c) 2013 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	soil science
研究领域[WOS]	agriculture
关键词[WOS]	forest soils ; atmospheric methane ; coniferous forest ; terrestrial plants ; cattle slurry ; boreal forest ; water-balance ; n deposition ; inorganic n ; n2o fluxes
收录类别	SCI
语种	英语
WOS记录号	WOS:000329594800048
公开日期	2014-12-19
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/4291]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Michigan, Sch Nat Resources & Environm, Ann Arbor, MI 48109 USA 4.Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Fang, Huajun,Cheng, Shulan,Yu, Guirui,et al. Low-level nitrogen deposition significantly inhibits methane uptake from an alpine meadow soil on the Qinghai-Tibetan Plateau[J]. geoderma,2014,213:444-452.
APA	Fang, Huajun.,Cheng, Shulan.,Yu, Guirui.,Cooch, Jules.,Wang, Yongsheng.,...&Li, Yingnian.(2014).Low-level nitrogen deposition significantly inhibits methane uptake from an alpine meadow soil on the Qinghai-Tibetan Plateau.geoderma,213,444-452.
MLA	Fang, Huajun,et al."Low-level nitrogen deposition significantly inhibits methane uptake from an alpine meadow soil on the Qinghai-Tibetan Plateau".geoderma 213(2014):444-452.