Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs

doi:10.1021/acs.est.6b02814

	Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs
	Xiong,XH(Xiong,Xiaohu)[1,2]; Wu,SG(Wu,Shugang)[1,2]; Lu,XF(Lu,Xuefeng)[1,2]; Cheng,P(Cheng,Peng)[1,2]; Zhou,WJ(Zhou,Weijian)[1,2,3]; Niu,ZC(Niu,Zhenchuan)[1,2]; Fu,YC(Fu,Yunchong)[1,2]; Du,H(Du,Hua)[1,2]
刊名	Environmental Science & Technology
	2016-10
卷号	50 期号:22 页码:12122-12128
DOI	10.1021/acs.est.6b02814
文献子类	期刊论文
英文摘要	Six months to more than one year of atmospheric Δ14CO2 were measured in 2014-2015 at one global background site in Waliguan (WLG) and four regional background sites at Shangdianzi (SDZ), Lin'an (LAN), Longfengshan (LFS) and Luhuitou (LHT), China. The objectives of the study are to document the Δ14CO2 background levels at each site and to trace the variations in fossil fuel CO2 (CO2ff) inputs at regional background sites. Δ14CO2 at WLG varied from 7.1±2.9‰ to 32.0±3.2‰ (average 17.1±6.8‰) in 2015, with high values generally in autumn/summer and low values in winter/spring. During the same period, Δ14CO2 values at the regional background sites were found to be significantly (p < 0.05) lower than those at WLG, indicating different levels of CO2ff inputs at those sites. CO2ff concentrations at LAN (12.7±9.6 ppm) and SDZ (11.5±8.2 ppm) were significantly (p < 0.05) higher than those at LHT (4.6±4.3 ppm) in 2015. There were no significant (p > 0.05) seasonal differences in CO2ff concentrations for the regional sites. Regional sources contributed in part to the CO2ff inputs at LAN and SDZ, while local sources dominated the trend observed at LHT. These data provide a preliminary understanding of atmospheric Δ14CO2 and CO2ff inputs for a range of Chinese background sites.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5925]
专题	地球环境研究所_加速器质谱中心
作者单位	1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China; 2.Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center, Xi’an, China; 3.Beijing Normal University, Beijing, China
推荐引用方式 GB/T 7714	Xiong,XH,Wu,SG,Lu,XF,et al. Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs[J]. Environmental Science & Technology,2016,50(22):12122-12128.
APA	Xiong,XH.,Wu,SG.,Lu,XF.,Cheng,P.,Zhou,WJ.,...&Du,H.(2016).Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs.Environmental Science & Technology,50(22),12122-12128.
MLA	Xiong,XH,et al."Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs".Environmental Science & Technology 50.22(2016):12122-12128.