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Time series of atmospheric Delta(CO2)-C-14 recorded in tree rings from Northwest China (1957-2015)
Xiong, Xiaohu1,2; Zhou, Weijian1,2,3,4,5,6; Hou, Xiaolin1,2,4,5; Cheng, Peng1,2; Du, Hua1,2; Zhao, Xue1,2,6; Wu, Shugang1,2; Hou, Yaoyao1,2; Lu, Xuefeng1,2; Fu, Yunchong1,2
Corresponding AuthorXiong, Xiaohu(xiongxh@ieecas.cn)
2021-06-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume272Pages:8
AbstractRadiocarbon (C-14) is a unique and important tool for understanding carbon cycle in the nature, and its use can be significantly enhanced where reliable historical atmospheric Delta(CO2)-C-14 records can be established. In China, continuous atmospheric Delta(CO2)-C-14 records since the 1950s are scarce, a period when dramatic variations of Delta(CO2)-C-14 occurred caused by intensive human activities. In this research, Delta C-14 of Qinghai spruce tree rings collected from Huangzhong (HZ) (36.27 degrees N, 101.67 degrees E, 2982 m amsl) were measured by Accelerator Mass Spectrometry, and a Delta(CO2)-C-14 time series from 1957 to 2015 was reconstructed. The results show that HZ Delta C-14 was generally higher than the contemporaneous average level in the mid-high latitudes of the Northern Hemisphere. The peak value of HZ Delta C-14 occurred in 1964 (as bomb peak) was higher than that of other tree ring records in East Asia at a similar latitude, likely due to the impact of the atmosphere nuclear tests at Semipalatinsk (Kazakhstan). The record shows no obvious disturbance of Lop Nor nuclear weapons tests (in Northwest China) during 1964-1980, except for 1971. A local Suess effect began to appear since 2001, and the estimated atmospheric fossil fuel-derived CO2 (CO2ff) concentration increased from 3.5 ppm to 8.8 ppm from 2006 to 2015. This is associated with the implementation of the "Western Development" strategy in China. HZ Delta C-14 records document background Delta C-14 data, useful for regional carbon cycle research and atmospheric CO2ff quantification in the region. These data also provide baseline values for assessment environmental safety connected with nuclear power plants in China. (C) 2021 Elsevier Ltd. All rights reserved.
KeywordDelta(CO2)-C-14 records Tree ring Bomb curve Fossil CO2 Northwest China
DOI10.1016/j.chemosphere.2021.129921
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[NSFC41991250] ; National Natural Science Foundation of China[41730108] ; Ministry of Science and Technology of China[2015FY110800] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23010302] ; Natural Science Basic Research Program of Shaanxi[2019JCW20]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational Natural Science Foundation of China ; Ministry of Science and Technology of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Basic Research Program of Shaanxi
WOS SubjectEnvironmental Sciences
WOS IDWOS:000635594700107
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16321
Collection加速器质谱中心
第四纪科学与全球变化卓越创新中心
Corresponding AuthorXiong, Xiaohu
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Natl Ctr AMS Xian, Shaanxi Key Lab Ams Technol & Applicat, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Xian 710049, Peoples R China
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266237, Peoples R China
6.Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China
Recommended Citation
GB/T 7714
Xiong, Xiaohu,Zhou, Weijian,Hou, Xiaolin,et al. Time series of atmospheric Delta(CO2)-C-14 recorded in tree rings from Northwest China (1957-2015)[J]. CHEMOSPHERE,2021,272:8.
APA Xiong, Xiaohu.,Zhou, Weijian.,Hou, Xiaolin.,Cheng, Peng.,Du, Hua.,...&Fu, Yunchong.(2021).Time series of atmospheric Delta(CO2)-C-14 recorded in tree rings from Northwest China (1957-2015).CHEMOSPHERE,272,8.
MLA Xiong, Xiaohu,et al."Time series of atmospheric Delta(CO2)-C-14 recorded in tree rings from Northwest China (1957-2015)".CHEMOSPHERE 272(2021):8.
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