Dissolved methane in groundwater of domestic wells and its potential emissions in arid and semi-arid regions of Inner Mongolia, China

doi:10.1016/j.scitotenv.2018.01.205

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	Dissolved methane in groundwater of domestic wells and its potential emissions in arid and semi-arid regions of Inner Mongolia, China
	Wang, Zhi-Ping ; Zhang, Lin ; Wang, Bin 2; Hou, Long-Yu ; Xiao, Chun-Wang ; Zhang, Xi-Mei ; Han, Xing-Guo
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018
卷号	626 页码:1193-1199
关键词	Microbial CH4 Isotope signature Sandy soils Aquifer Ground wetland
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2018.01.205
文献子类	Article
英文摘要	Methane (CH4) is widely present in groundwater. Dissolved CH4 in groundwater is less understood when compared with that in wetlands. In this study, the concentrations and origin of dissolved CH4 in groundwater were investigated and the potential importance of groundwater CH4 emissions in arid and semi-arid regions of Inner Mongolia was discussed. Groundwater was extracted from domestic wells using a submersible pump or manual power and was analyzed for CH4 concentrations, delta C-13-CH4, and physico-chemical variables. The results show that the concentrations of dissolved CH4 in groundwater had large spatial variability, ranging from 0 to 0.10 mg L-1 with a mean of 0.01 mg L-1 in Xilingol and from 0 to 8.99 mg L-1 with a mean of 1.44 mg L-1 in Xingan-Tongliao. Substantial CH4 concentrations of about 2.5-5.5 mg L-1 were found in central areas of Xingan-Tongliao in the winter and the summer. The delta C-13-CH4 of about -85% was highly depleted while CH4 concentration was significantly negatively correlated with SO42- concentration, indicating that dissolved CH4 in groundwater was microbial in origin. This study suggests that groundwater as a source of CH4 might have great implications in arid and semi-arid regions worldwide and should deserve more research. (C) 2018 Elsevier B.V. All rights reserved.
学科主题	Environmental Sciences
电子版国际标准刊号	1879-1026
出版地	AMSTERDAM
WOS关键词	APPALACHIAN BASIN ; CONFINED AQUIFER ; SOUTHERN ONTARIO ; SHALLOW AQUIFERS ; WATER-RESOURCES ; NORTHERN CHINA ; LIVING TREES ; CARBON ; FORESTS ; CANADA
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000428194000117
资助机构	National Key Research and Development Program of China [2016YFA0600803] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370493, 31200374]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20705]
专题	植被与环境变化国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Nanxincun 20, Beijing 100093, Peoples R China 3.Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA 4.Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China 5.Chinese Acad Agr Sci, Key Lab Dryland Agr, Inst Environm & Sustainable Dev Agr, MOA, Beijing 100081, Peoples R China 6.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110164, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhi-Ping,Zhang, Lin,Wang, Bin,et al. Dissolved methane in groundwater of domestic wells and its potential emissions in arid and semi-arid regions of Inner Mongolia, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,626:1193-1199.
APA	Wang, Zhi-Ping.,Zhang, Lin.,Wang, Bin.,Hou, Long-Yu.,Xiao, Chun-Wang.,...&Han, Xing-Guo.(2018).Dissolved methane in groundwater of domestic wells and its potential emissions in arid and semi-arid regions of Inner Mongolia, China.SCIENCE OF THE TOTAL ENVIRONMENT,626,1193-1199.
MLA	Wang, Zhi-Ping,et al."Dissolved methane in groundwater of domestic wells and its potential emissions in arid and semi-arid regions of Inner Mongolia, China".SCIENCE OF THE TOTAL ENVIRONMENT 626(2018):1193-1199.