The Role of Aging and Wind in Inducing Death and/or Growth Reduction in Korean Fir (Abies Koreana Wilson) on Mt. Halla, Korea

The purpose of this study was to investigate the role strong winds and aging in death and/or decline growth Korean fir on Mt. Halla Korea. Bangeoreum (BA-S), Jindalrebat (JD-E), Youngsil (YS-W) southern, eastern, western slopes (ca. 1600 1700 m a.s.l.) were selected for study. site chronologies established using more than 10 living firs at each site. Additionally, date years seasons standing/fallen dead firs, 15/15, 14/15, 10/10 trees BA-S, JD-E, YS-W, respectively. After adjusting age with period up sampling point, oldest found among 114 old JD-E 131 JD-E. Besides this, most BA-S have died between 2008 2015, irregular intervals 1976 2013 YS-W. Also, maximum number trees, that is, 62.7% spring summer, followed by 20.9% summer autumn, 16.4% autumn current year following year. Abrupt reductions occurred become significant recent years, whereas abrupt reduction recovery occur a cyclic order. intensity frequency typhoons increased from 2012, trend in-line Therefore, 2012 are considered as likely influencing factor firs. In contrast, located windward slope showed relationship stronger 25–33 m/s.