論文

査読有り
2013年

Vegetation and climate history of northern Japan inferred from the 5500-year pollen record from the Oshima Peninsula, SW Hokkaido

Quaternary International
  • Christian Leipe
  • ,
  • Norio Kito
  • ,
  • Yumi Sakaguchi
  • ,
  • Pavel E. Tarasov

290-291
290-291
開始ページ
151
終了ページ
163
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.quaint.2012.07.014
出版者・発行元
Elsevier

This study reconstructs middle and late Holocene vegetation and climate dynamics in the Oshima Peninsula, SW Hokkaido, using the published method of biome reconstruction and modern analogue technique applied to the Yakumo pollen record (42°17'03'N, 140°15'34'E) spanning the last 5500 years. Two previously published matrices assigning Japanese plant/pollen taxa to the major vegetation types (biomes) are tested using a newly compiled dataset of 78 surface pollen spectra from Hokkaido. With both matrices showing strengths and weaknesses in reconstructing cool mixed and temperate deciduous forests of Hokkaido, the results suggest the necessity to consider the whole list of identified terrestrial pollen taxa for generating robust vegetation reconstructions for northern Japan. Applied to the fossil pollen data, both biome-reconstruction approaches demonstrate consistently that oak-dominated cool mixed forest spread in the study region between 5.5 and 3.6 cal ka BP and was subsequently replaced by beech-dominated temperate deciduous forest. The pollen-based climate reconstruction suggests this change in the vegetation composition was caused by a shift from cooler and drier than present climate to warmer and wetter, similar to modern conditions about 3.6 cal ka BP. Comparing the pollen-based reconstruction results with the published marine records from the NW Pacific, the reconstructed vegetation and climate dynamics can be satisfactorily explained by the greater role played by the warm Tsushima Current in the Sea of Japan and in the Tsugaru Strait during the middle and late Holocene. An increase in sea surface temperatures west and south of the study site would favour air temperature rise and moisture uptake and cause an increase in precipitation and snow accumulation in the western part of Hokkaido during the late Holocene. © 2012 Elsevier Ltd and INQUA.

リンク情報
DOI
https://doi.org/10.1016/j.quaint.2012.07.014
ID情報
  • DOI : 10.1016/j.quaint.2012.07.014
  • ISSN : 1040-6182
  • SCOPUS ID : 84875491201

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