最終氷期の寒冷気候について　　南部ヨーロッパとの比較

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  • The cold climate of the last glacial age in Japan. A comparison with southern Europe.
  • サイシュウ ヒョウキ ノ カンレイ キコウ ニ ツイテ ナンブ ヨーロッパ ト
  • A comparison with southern Europe
  • 南部ヨーロッパとの比較

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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.<br>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.<br>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.<br>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.<br>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.<br>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.<br>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.<br>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.<br>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.<br>These climatic changes for the last 120, 000 years in Japan are discussed in comparison with results from southern Europe.

収録刊行物

  • 第四紀研究

    第四紀研究 25 (4), 277-294, 1987

    日本第四紀学会

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