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Influences of the Vast Eruption of Kikai Caldera Volcano in the Holocene Vegetational History of Yakushima, Southern Kyushu, Japan

Yoshinori YASUDA
Japan Review
No. 2 (1991), pp. 145-160
Stable URL: http://www.jstor.org/stable/25790901
Page Count: 16
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Influences of the Vast Eruption of Kikai Caldera Volcano in the Holocene Vegetational History of Yakushima, Southern Kyushu, Japan
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Abstract

Pollen analytical study of the Hananoego moor in Yakushima revealed the drastic influences of the volcanic eruption on the Holocene vegetational history in Yakushima. Dense forest mainly composed of Cryptomeria japonica, Buxus, Quercus Cyclobalanopsis, Symplocos and Trochodendron araliodes grew surrounding the Hananoego moor before the eruption of the Kikai caldera volcano. This forest, including the giant Japanese cedar (Yakusugi), was destroyed by the vast pyroclastic flow deposit from the Kikai caldera volcano which erupted 6300 years B.P. 要旨:屋久島の花之江河湿原の花粉分析の精果、6300年前に噴火した鬼界カルデラによる幸屋火砕流推積物によって、古屋久杉やヤマグルマからなる古花之江河湿原周辺の森林は壊滅的打撃を被ったことが、明らかとなった。現在の新花之江河湿原は約2500年前に形成された。

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