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Spatial Distribution of 14C in Tree Leaves from Bali, Indonesia

Published online by Cambridge University Press:  11 October 2019

Tamás Varga Open the ORCID record for Tamás Varga [Opens in a new window] ,
A J Timothy Jull Open the ORCID record for A J Timothy Jull [Opens in a new window] ,
Zsuzsa Lisztes-Szabó  and
Mihály Molnár
Tamás Varga*
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen, H-4001, P.O. Box 51, Hungary
A J Timothy Jull
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen, H-4001, P.O. Box 51, Hungary Department of Geosciences, University of Arizona, Tucson, AZ85721, USA University of Arizona AMS Laboratory, Tucson, AZ85721, USA
Zsuzsa Lisztes-Szabó
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen, H-4001, P.O. Box 51, Hungary
Mihály Molnár
Affiliation:
Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Hungarian Academy of Sciences (ATOMKI), Debrecen, H-4001, P.O. Box 51, Hungary
*
*Corresponding author. Email: varga.tamas@atomki.mta.hu.
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Abstract

The increase of fossil-fuel-derived CO2 in the atmosphere has led to the dilution of the atmospheric radiocarbon concentration, but due to the costly instrumentation, the continuous atmospheric 14C/12C data is incomplete in developing countries, such as in Indonesia. These data give useful information about the level of local and regional fossil emissions. In this study, 14C AMS measurements of local vegetation and woody plant species samples have been used to estimate the rate of fossil-fuel-derived carbon in the plants, which fix the CO2 from the atmosphere by photosynthesis. Evergreen leaf samples were collected in September 2018 on the island of Bali in different, diverse districts in local and urban areas. The samples from the densely populated areas show observable fossil fuel emissions and show that the Δ14C level is close to zero ‰, similar to the natural level.

Keywords

AMSCO2evergreenfossil carbonleaf
Type
Research Article
Information
Radiocarbon , Volume 62 , Issue 1 , February 2020 , pp. 235 - 242
Copyright
© 2019 by the Arizona Board of Regents on behalf of the University of Arizona 

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