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	Response of soil methane uptake to simulated nitrogen deposition and grazing management across three types of steppe in Inner Mongolia, China
	Li, Xianglan1,2; He, Hong1,2; Yuan, Wenping3,4; Li, Linghao5; Xu, Wenfang4,6; Liu, Wei3,5; Shi, Huiqiu5,6; Hou, Longyu7; Chen, Jiquan8; Wang, Zhiping5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-01-15
卷号	612页码:799-808
关键词	CH4 exchange Meadow steppe Typical steppe Desert steppe Inner Mongolia
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2017.08.236
通讯作者	Li, Xianglan(xlli@bnu.edu.cn)
英文摘要	The response of soil methane (CH4) uptake to increased nitrogen (N) deposition and grazing management was studied in three types of steppe (i.e., meadow steppe, typical steppe, and desert steppe) in Inner Mongolia, China. The experiment was designed with four simulated N deposition rates such as 0, 50, 100, and 200 kg N ha(-1), respectively, under grazed and fenced management treatments. Results showed that the investigated steppes were significant sinks for CH4, with an uptake flux of 1.12-3.36 kg ha(-1) over the grass growing season and that the magnitude of CH4 uptake significantly (P < 0.05) decreased with increasing N deposition rates. The soil CH4 uptake rates were highest in the desert steppe, moderate in the typical steppe, and lowest in the meadow steppe. Compared with grazed plots, fencing increased the CH4 uptake by 4.7-40.2% with a mean value of 20.2% across the three different steppe types. The responses of soil CH4 uptake to N deposition in the continental steppe varied depending on the N deposition rate, steppe type, and grazing management. A significantly positive correlation between CH4 uptake and soil temperature was found in this study, whereas no significant relationship between soil moisture and CH4 uptake occurred. Our results may contribute to the improvement of model parameterization for simulating biosphere-atmosphere CH4 exchange processes and for evaluating the climate change feedback on CH4 soil uptake. (C) 2017 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	COLORADO SHORTGRASS STEPPE ; QINGHAI-TIBETAN PLATEAU ; GREENHOUSE-GAS FLUXES ; CARBON-DIOXIDE FLUXES ; N2O FLUXES ; ALPINE GRASSLAND ; FOREST SOILS ; CONIFEROUS FOREST ; GROWING-SEASON ; CATTLE SLURRY
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000413313700080
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557639
专题	寒区旱区环境与工程研究所
通讯作者	Li, Xianglan
作者单位	1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China 2.Beijing Normal Univ, Joint Ctr Global Change & China Green Dev, Beijing 100875, Peoples R China 3.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou 519082, Guangdong, Peoples R China 4.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Regions Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.China Agr Univ, Dept Grassland Sci, Beijing 100193, Peoples R China 8.Michigan State Univ, Dept Geog, Coll Social Sci, E Lansing, MI 48824 USA
推荐引用方式 GB/T 7714	Li, Xianglan,He, Hong,Yuan, Wenping,et al. Response of soil methane uptake to simulated nitrogen deposition and grazing management across three types of steppe in Inner Mongolia, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,612:799-808.
APA	Li, Xianglan.,He, Hong.,Yuan, Wenping.,Li, Linghao.,Xu, Wenfang.,...&Wang, Zhiping.(2018).Response of soil methane uptake to simulated nitrogen deposition and grazing management across three types of steppe in Inner Mongolia, China.SCIENCE OF THE TOTAL ENVIRONMENT,612,799-808.
MLA	Li, Xianglan,et al."Response of soil methane uptake to simulated nitrogen deposition and grazing management across three types of steppe in Inner Mongolia, China".SCIENCE OF THE TOTAL ENVIRONMENT 612(2018):799-808.

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