The spatial distribution of fossil fuel CO2 traced by Δ(14)C in the leaves of gingko (Ginkgo biloba L.) in Beijing City, China.
Atmospheric fossil fuel CO2 (CO2ff ) information is an important reference for local government to formulate energy-saving and emission reduction in China. The CO2ff spatial distribution in Beijing City was traced by Δ(14)C in the leaves of gingko (Ginkgo biloba L.) from late March to September in 2009. The Δ(14)C values were in the range of -35.2 ± 2.8∼15.5 ± 3.2 ‰ (average 3.4 ± 11.8 ‰), with high values found at suburban sites (average 12.8 ± 3.1 ‰) and low values at road sites (average -8.4 ± 18.1 ‰). The CO2ff concentrations varied from 11.6 ± 3.7 to 32.5 ± 9.0 ppm, with an average of 16.4 ± 4.9 ppm. The CO2ff distribution in Beijing City showed spatial heterogeneity. CO2ff hotspots were found at road sites resulted from the emission from vehicles, while low CO2ff concentrations were found at suburban sites because of the less usage of fossil fuels. Additionally, CO2ff concentrations in the northwest area were generally higher than those in the southeast area due to the disadvantageous topography.
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China. niuzc@ieecas.cn.|Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China. niuzc@ieecas.cn.|Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China. niuzc@ieecas.cn.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China. niuzc@ieecas.cn.
Zhenchuan
Z
Niu
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Weijian
W
Zhou
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
Xiaoshan
X
Zhang
Department of Environmental Sciences, College of Urban and Environmental Sciences, Northwest University, Xi'an, China.
Sen
S
Wang
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Dongxia
D
Zhang
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Xuefeng
X
Lu
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Peng
P
Cheng
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Shugang
S
Wu
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Xiaohu
X
Xiong
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Hua
H
Du
State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China.|Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, National Center for Accelerator Mass Spectrometry in Xi'an, Xi'an, China.
Yunchong
Y
Fu
D000393:Air Pollutants / Q000032:analysis*; D000068476:Beijing; D002245:Carbon Dioxide / Q000032:analysis*; D002247:Carbon Isotopes / Q000032:analysis; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods; D005579:Fossil Fuels / Q000032:analysis*; D020441:Ginkgo biloba / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*
D000393:Air Pollutants; D002247:Carbon Isotopes; D005579:Fossil Fuels; D002245:Carbon Dioxide
Beijing City; Fossil fuel CO2; Gingko leaves; Spatial distribution; Δ14C