干旱区生态环境知识资源中心(Arid): Impacts of precipitation, warming and nitrogen deposition on methane uptake in a temperate desert

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DOI	10.1007/s10533-019-00606-0
	Impacts of precipitation, warming and nitrogen deposition on methane uptake in a temperate desert
	Yue, Ping 1,2,5; Cui, Xiaoqing 3; Wu, Wenchao 2; Gong, Yanming 2; Li, Kaihui 2; Goulding, Keith 4; Liu, Xuejun 3
通讯作者	Liu, Xuejun
来源期刊	BIOGEOCHEMISTRY
ISSN	0168-2563
EISSN	1573-515X
出版年	2019
卷号	146 期号:1 页码:17-29
英文摘要	Desert soils are a significant global sink for methane (CH4). However, it remains unclear how CH4 uptake in temperate deserts could respond to elevated precipitation, nitrogen (N) deposition and warming. An in situ field experiment was conducted to investigate these effects on CH4 uptake in the Gurbantunggut Desert, northwest China, from September 2014 to August 2017. This desert was a weak sink for CH4 (0.83 kg C ha(-1) year(-1)) over this period, with the non-growing season (November-March) accounting for 30.5% of the annual CH4 uptake. Pulse CH4 uptake was found to result from increased water addition (by 30% or 60 mm year(-1)) and low N deposition (30 kg N ha(-1) year(-1)) which enhanced annual CH4 uptake by 62.3 and 52.6%, respectively. However, no significant impact of high N deposition (60 kg N ha(-1) year(-1)) was found. Warming in open topped chambers (OTCs) had a variable effect on CH4 uptake, which mainly depended on variation in soil moisture. The response in CH4 uptake to the interaction between water and N addition was less than that for the individual factors, except under conditions of warming. In addition, CH4 uptake was significantly positively correlated to water-filled pore space (WFPS), differing from observations in forest and grassland ecosystems. Structural equation modeling indicated that CH4 uptake was significantly enhanced by soil moisture and the underground biomass of ephemerals. Overall, the CH4 sink of this desert was significantly enhanced by increasing precipitation and low N deposition, rather than warming, which may become a feedback for future climate.
英文关键词	Precipitation Nirogen deposition Warming CH4 uptake Temperate desert
类型	Article
语种	英语
国家	Peoples R China ; England
收录类别	SCI-E
WOS记录号	WOS:000493605100002
WOS关键词	GREENHOUSE-GAS FLUXES ; ATMOSPHERIC METHANE ; CLIMATE-CHANGE ; INCREASING PRECIPITATION ; AMMONIUM INHIBITION ; SOIL RESPIRATION ; RESPONSES ; CH4 ; OXIDATION ; EXCHANGE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
EI主题词	2019-11-01
来源机构	中国科学院新疆生态与地理研究所 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310392
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 3.China Agr Univ, Coll Resources & Environm Sci, Key Lab Plant Soil Interact MOE, Beijing 100193, Peoples R China; 4.Rothamsted Res, Sustainable Agr Sci Dept, Harpenden AL5 2JQ, Herts, England; 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yue, Ping,Cui, Xiaoqing,Wu, Wenchao,et al. Impacts of precipitation, warming and nitrogen deposition on methane uptake in a temperate desert[J]. 中国科学院新疆生态与地理研究所, 中国农业大学,2019,146(1):17-29.
APA	Yue, Ping.,Cui, Xiaoqing.,Wu, Wenchao.,Gong, Yanming.,Li, Kaihui.,...&Liu, Xuejun.(2019).Impacts of precipitation, warming and nitrogen deposition on methane uptake in a temperate desert.BIOGEOCHEMISTRY,146(1),17-29.
MLA	Yue, Ping,et al."Impacts of precipitation, warming and nitrogen deposition on methane uptake in a temperate desert".BIOGEOCHEMISTRY 146.1(2019):17-29.