Abstract
The relationship between stand dynamics and the local wind climate was analyzed in two natural beech (Fagusspp.) forests in Takahara and Kayanodaira, Japan. The stand dynamics of the most recent 100 years were analyzed using tree-ring chronologies. An index for growth-rate increase (GI)was calculated. Site specific curves of annual averages of GIfor all sample trees (GIA-curves) were compared. Peaks in the GIA-curves coincided with typhoons which hit the region and may have caused major releases. Takahara had higher peaks in the GA4-curve and an average higher level of the curve, which suggested that the site was more dynamic and experienced more and stronger releases. The local wind climate was analyzed using data from nearby meteorological stations. The wind climate near the more dynamic Takahara had higher extremes in daily maximum wind speeds. In this way, the wind climate data support the interpretation of stand dynamics from tree-ring chronologies.
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