Stable carbon isotopic composition in annual rings of a pine tree (Pinus densiflora) from Yeongwol, Korea: Possible application to climate study

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Abstract

Stable carbon isotope ratios were measured on the alpha-cellulose in tree rings of a pine tree (Pinus densiflora) from Yeongwol, Korea. We developed an annual-resolution δ13C series (1835-1905) by correcting the measured data for changes in δ13C of air to minimize non-climatic influences. To investigate the climatic signal in the δ13C series, we performed correlation analysis between δ13C and the Cheugugi climate data. The Cheugugi precipitation data were first recorded by King Sejong (1397-1450) of the Joseon Dynasty. However, the longest set of precipitation data available is the one collected in Seoul (1776-1907). Although many studies support the reliability of the Cheugugi data, no previous studies have investigated the potential of the δ13C signal in tree rings as paleoclimate proxy using the Cheugugi data. Recent precipitation trends in Yeongwol are quite similar to that of Seoul, and we found significant correlations between the Cheugugi data and the δ13C series. We suggest further studies to replicate these results and confirm whether comparing δ13C variations in tree rings and Cheugugi data is a useful method of investigating the potential of the δ13C signal as a paleoclimate proxy in or near the Korean peninsula.

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Kim, C. H., Lee, J. H., Kang, J., Song, S., Yun, M. H., & Kim, J. C. (2017). Stable carbon isotopic composition in annual rings of a pine tree (Pinus densiflora) from Yeongwol, Korea: Possible application to climate study. Radiocarbon, 59(2), 373–381. https://doi.org/10.1017/RDC.2017.8

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