最終氷期の寒冷気候について--南部ヨ-ロッパとの比較 (中部日本における後期更新世の諸問題--とくに寒冷気候について<特集>)

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概要

• 論文の詳細を見る

• The following chronostratigraphic pollen zones and climatic changes are established based on published papers of pollen analyses covering the period since the last glacial age in Japan.WE (Würm Earlyglacial) zone (ca. 120, 000-70, 000 years B.P.). This zone corresponds to Earlyglacial. High values of Cryptomeria constitute a characteristic feature of this zone.WP (Würm Pleniglacial) I zone (ca. 70, 000-50, 000 years B.P.). This zone corresponds to a stadial of the lower Pleniglacial. An increase in Picea, Abies, Tsuga and Betula suggests climatic deterioration.WPII zone (ca. 50, 000-33, 000 years B.P.). This zone corresponds to an interstadial of the middle Pleniglacial. Cryptomeria show high values like those of the WE zone, indicating a cool and moist climate.WPIII zone (ca. 33, 000-28, 000 years B.P.). This zone corresponds to a stadial of the upper Pleniglacial. Dominance of Pinus subg. Haploxylon, Picea, Abies and Tsuga suggests a cold and dry climate. Climatic deterioration of this stadial played an important role in the evolution of Japanese Paleolithic culture.WPIV zone (ca. 28, 000-25, 000 years B.P.). This zone corresponds to a small interstadial of the upper Pleniglacial. Climate showed a temporary warming.WPV zone (ca. 25, 000-13, 000 years B.P.). This zone corresponds to the maximum stadial of the upper Pleniglacial and is sub-divided into three sub-zones: WPVa sub-zone (ca. 25, 000-21, 000 years B.P.). WPVb sub-zone (ca. 21, 000-18, 000 years B.P.) and WPVc sub-zone (ca. 18, 000-13, 000 years B.P.). The WPVb sub-zone is the coldest epoch of the last glacial age.WL (Würm Lateglacial) zone (ca. 13, 000-10, 000 years B.P.). This zone corresponds to a Lateglacial. The climate became warm by the beginning of deposition of this zone, and an obvious increase in humidity appeared after 13, 000-12, 000 years B.P.H (Holocene) zone (after about 10, 000 years B.P.). This zone is Holocene. Deciduous broad-leaved trees like Fagus and Quercus flourished in the warm and moist climate. This zone is sub-divided into the five sub-zones HI, HIIa, HIIb, HIIIa and HIIIb.These climatic changes for the last 120, 000 years in Japan are discussed in comparison with results from southern Europe.

• 日本第四紀学会の論文

著者

• 安田 喜憲

  広島大学総合科学部

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• 最終氷期の寒冷気候について--南部ヨ-ロッパとの比較 (中部日本における後期更新世の諸問題--とくに寒冷気候について)

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