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Response of vegetation in central Japan to precession during the last 147,000 years : A lignin record from Lake Biwa core BIW08-B

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Title: Response of vegetation in central Japan to precession during the last 147,000 years : A lignin record from Lake Biwa core BIW08-B
Authors: Ohira, Fukashi Browse this author
Yamamoto, Masanobu Browse this author →KAKEN DB
Takemura, Keiji Browse this author →KAKEN DB
Hayashida, Akira Browse this author →KAKEN DB
Keywords: lignin
vegetation
TMAH pyrolysis
glacial
Lake Biwa
central Japan
late Pleistocene
BIW08-B
Issue Date: 28-Oct-2014
Publisher: Elsevier
Journal Title: Quaternary international
Volume: 349
Start Page: 59
End Page: 67
Publisher DOI: 10.1016/j.quaint.2013.10.059
Abstract: To understand the responses of terrestrial vegetation in central Japan to global climate changes, we generated a record of lignin composition from core BIW08-B in Lake Biwa, central Japan, during the last 147,000 years by TMAHepyrolysiseGC/MS. Lignin abundance was intermittently elevated and associated with a high ratio of cinnamyl (C) to vanillyl (V) phenols (C/V ratio) of lignin, suggesting episodic inflows of herbaceous plant-derived organic matter into Lake Biwa. The largest inflow occurred during the last deglaciation. Variation in the ratio of syringyl (S) to vanillyl (V) phenols (S/V ratio), which is a contribution index of angiosperms against gymnosperms, showed a precession-like cycle, was consistent with a pollen record from Lake Biwa, and showed a pattern similar to the S/V record from an offshore marine site in the northwestern Pacific. The variation reflected the regional replacement of cool-temperate deciduous broadleaf forests, subalpine conifer forests, and Japanese cedar forests in central Japan caused by the repetition of warmer, dry and cooler, wet climates on a precession cycle. (c) 2013 Elsevier Ltd and INQUA. All rights reserved.
Type: article (author version)
URI: http://hdl.handle.net/2115/59273
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山本 正伸

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