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http://dx.doi.org/10.5658/WOOD.2017.45.1.85

Establishing Local Master Ring-Width Chronologies and Their Utilization for Estimating The Age of Big Old Trees  

Oh, Jung-ae (Test & Evaluation Division, Korea Forestry Promotion Institute)
Seo, Jeong-Wook (Department of Wood and Paper Science, Chungbuk National University)
Kim, Byung-Ro (Department of Wood and Paper Science, Chungbuk National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.45, no.1, 2017 , pp. 85-95 More about this Journal
Abstract
This study aimed at more precisely estimating the age of big old trees using dendrochronological method. Gesan-gun in Chungbuk (CBGS), Gurye-gun in Jeonnam (JNGR) and Uljin-gun in Gyeongbuk (GBUJ) were study areas and Zelkova serrata (ZS) and Pinus densiflora (PD) selected as protected trees therein were used as experimental tree species. The increment cores were extracted from 12, 8, and 6 ZSs and 10, 3, and 9 PDs in CBGS, JNGR, and GBUJ, respectively, using an increment borer (${\phi}5.2mm$). In order to clearly distinguish tree-ring boundary, the surface in the transverse section was cut for ZS using a sliding microtome and sanded for PD using a sand paper. Ring widths were measured in the resolution of 0.01 mm. Based on the measurement values, 203-year long (1813-2015) ZS local master tree-ring chronologies were successfully established and 175-year long (1841-2015) ZS local master tree-ring chronology for JNGR was also successfully established. In the case of PD, 154-, 175-, and 250-year long local master tree-ring chronologies for CBGS, JNGR, and GBUJ were successfully established, respectively. In the comparisons between local master tree-ring chronologies, they showed low t-values and Glks. According to the comparisons of the local master tree-ring chronologies with 50-year (1950~2000) average temperature and precipitation distribution maps, the annual variations of local master tree-ring chronologies seem to be determined by not temperature but precipitation. For such cross-dating therefore more local master tree-ring chronologies have to be established at the least based on the distribution map for precipitation.
Keywords
big old tree; tree age; tree-ring chronology; Zelkova serrata; Pinus densiflora; crossdating;
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