气候变化领域集成服务门户(CCPortal): Tree-ring Δ14C time series from 1948 to 2018 at a regional background site, China: Influences of atmospheric nuclear weapons tests and fossil fuel emissions

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DOI	10.1016/j.atmosenv.2020.118156
	Tree-ring Δ14C time series from 1948 to 2018 at a regional background site, China: Influences of atmospheric nuclear weapons tests and fossil fuel emissions
	Niu Z.; Feng X.; Zhou W.; Wang P.; Liu Y.; Lu X.; Du H.; Fu Y.; Li M.; Mei R.; Li Q.; Cai Q.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Δ14C values were measured from tree-rings (1948–2018) of Pinus tabuliformis Carr. that grew at the Shangdianzi (SDZ) regional background site in China. The objectives of this study are to establish a record of atmospheric Δ14C, and to evaluate the influences of Chinese atmospheric nuclear tests and fossil carbon emissions on atmospheric Δ14C variations. The SDZ tree-ring Δ14C values are negative before 1956, and increase dramatically in response to global atmospheric nuclear tests, with a peak value of 844.0 ± 4.2‰ in 1964. After the Partial Test Ban Treaty in 1963, the Δ14C values at SDZ decrease exponentially during 1964–2018. The half-life of the Δ14C decrease was protracted by approximately 2.7 yr during 1964–1984, due to Chinese atmospheric nuclear tests as well as Chinese forests as a carbon source during that period. Massive fossil carbon emissions in China lead to the SDZ decrease rate that is about 1.8‰ yr−1 faster than that for the Northern Hemisphere background region during 2000–2010. SDZ Δ14C since 2000 show strong negative correlations with fossil carbon emissions from the Beijing-Tianjin-Hebei (BTH) region (r2 = 0.954) and China (r2 = 0.950), and a 1‰ decrease in SDZ Δ14C indicates an increase of 2.3 ± 0.2 Mt C and 23.3 ± 1.7 Mt C fossil carbon emissions from the BTH region and China, respectively. © 2020 Elsevier Ltd
关键词	Beijing-tianjin-hebei region Fossil carbon emissions Half-life Radiocarbon Reform and opening-up Tree ring
语种	英语
scopus关键词	Carbon; Forestry; Nuclear weapons; Radioisotopes; Background region; Chinese forests; Decrease rate; Fossil carbon; Fossil fuel emissions; Negative correlation; Northern Hemispheres; Nuclear tests; Fossil fuels; carbon 14; fossil fuel; carbon isotope; emission; fossil fuel; Northern Hemisphere; nuclear weapons testing; spatiotemporal analysis; tree ring; acceleration; Article; carbon cycle; carbon source; China; controlled study; exhaust gas; net flux; nonhuman; nuclear weapon; pine; Pinus tabuliformis; plant structures; priority journal; time series analysis; China; Pinus tabuliformis
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248639
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; CAS Center for Excellence in Quaternary Science and Global Change, China; Open Studio for Oceanic-Continental Climate and Environment Changes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China; Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Joint Xi'an AMS Center Between IEECAS and Xi'an Jiaotong University, Xi'an, China; Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, China; Xi'an Institute for Innovative Earth Environment Research, Xi'an, China; School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, China
推荐引用方式 GB/T 7714	Niu Z.,Feng X.,Zhou W.,et al. Tree-ring Δ14C time series from 1948 to 2018 at a regional background site, China: Influences of atmospheric nuclear weapons tests and fossil fuel emissions[J],2021,246.
APA	Niu Z..,Feng X..,Zhou W..,Wang P..,Liu Y..,...&Cai Q..(2021).Tree-ring Δ14C time series from 1948 to 2018 at a regional background site, China: Influences of atmospheric nuclear weapons tests and fossil fuel emissions.ATMOSPHERIC ENVIRONMENT,246.
MLA	Niu Z.,et al."Tree-ring Δ14C time series from 1948 to 2018 at a regional background site, China: Influences of atmospheric nuclear weapons tests and fossil fuel emissions".ATMOSPHERIC ENVIRONMENT 246(2021).