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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image
Fig. 2 | Journal of Wood Science

Fig. 2

From: Synchronizations of tree-ring δ18O time series within and between tree species and provinces in Korea: a case study using dominant tree species in high elevations

Fig. 2

Preparation process to measure δ18O of α-cellulose in each tree ring: a cutting an increment core of 1 mm thickness (C: cross plane, R: radial plane, T: tangential plane); b vial with a thin wood plate fixed between Teflon-punch sheets; c chemical treatment to extract lignin and hemicellulose in solutions of NaClO2 and NaOH in a water bath at temperature 70 and 80 °C, respectively; d separating α-cellulose from each tree ring of same width from early- to latewood at 120–250 μg, and e wrapped α-cellulose in a thin silver foil

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