Spatiotemporal patterns and drivers of methane uptake across a climate transect in Inner Mongolia Steppe

doi:10.1016/j.scitotenv.2020.143768

	Spatiotemporal patterns and drivers of methane uptake across a climate transect in Inner Mongolia Steppe
	Liu, Wei 1; Yuan, Wenping 2; Xu, Sutie 3; Shao, Changliang 4,5; Hou, Longyu ; Xu, Wenfang 2; Shi, Huiqiu ; Pan, Qingmin; Li, Linghao; Kardol, Paul 6
	2021
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	757
摘要	Steppe soils are important biological sinks for atmospheric methane (CH4), but the strength of CH4 uptake remains uncertain due to large spatiotemporal variation and the lack of in situ measurements at regional scale. Here, we report the seasonal and spatial patterns of CH4 uptake across a 1200 km transect in arid and semi-arid steppe ecosystems in Inner Mongolia, ranging from meadow steppe in the east plain to typical and desert steppes on the west plateau. In general, seasonal patterns of CH4 uptake were site specific, with unimodal seasonal curves in meadow and typical steppes and a decreasing seasonal trend in desert steppe. Soil moisture was the dominant factor explaining the seasonal patterns of CH4 uptake, and CH4 uptake rate decreased with an increase in soil moisture. Across the transect, CH4 uptake showed a skewed unimodal spatial pattern, with the peak rate observed in the typical steppe sites and with generally higher uptake rates in the west plateau than in the east plain. Soil moisture, together with soil temperature, soil total carbon, and aboveground plant biomass, were the main drivers of the regional patterns of CH4 uptake rate. These findings are important for model development to more precisely estimate the soil CH4 sink capacity in arid and semi-arid regions. (C) 2020 Elsevier B.V. All rights reserved.
关键词	Carbon cycle Global warming Precipitation gradient Regional scale Soil moisture Steppe type
学科领域	Environmental Sciences
DOI	10.1016/j.scitotenv.2020.143768
收录类别	SCI
语种	英语
WOS关键词	PLANT-SPECIES DIVERSITY ; ATMOSPHERIC METHANE ; FOREST SOILS ; LAND-USE ; OXIDATION ; CH4 ; FLUXES ; TEMPERATE ; NITROGEN ; N2O
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000604432900049
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-1026
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences [XDA23080403] ; National Key Research and Development Program of China [2016YFC0500601]
作者邮箱	pqm@ibcas.ac.cn ; llinghao@ibcas.ac.cn
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26592
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Sch Atmospher Sci, Zhuhai 519082, Guangdong, Peoples R China 4.Univ Tennessee, Dept Biosyst Engn & Soil Sci, 2506 E J Chapman Dr, Knoxville, TN 37996 USA 5.Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China 6.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 7.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden
推荐引用方式 GB/T 7714	Liu, Wei,Yuan, Wenping,Xu, Sutie,et al. Spatiotemporal patterns and drivers of methane uptake across a climate transect in Inner Mongolia Steppe[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,757.
APA	Liu, Wei.,Yuan, Wenping.,Xu, Sutie.,Shao, Changliang.,Hou, Longyu.,...&Kardol, Paul.(2021).Spatiotemporal patterns and drivers of methane uptake across a climate transect in Inner Mongolia Steppe.SCIENCE OF THE TOTAL ENVIRONMENT,757.
MLA	Liu, Wei,et al."Spatiotemporal patterns and drivers of methane uptake across a climate transect in Inner Mongolia Steppe".SCIENCE OF THE TOTAL ENVIRONMENT 757(2021).

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