Paleovegetation and paleoclimate changes in southeastern part of the Korean peninsula over the last 30 kyr inferred from plant wax carbon isotopes SCOPUS KCI

Title
Paleovegetation and paleoclimate changes in southeastern part of the Korean peninsula over the last 30 kyr inferred from plant wax carbon isotopes
Author(s)
Suh, Y.J.; Hyun, S.
KIOST Author(s)
Suh, Yeon Jee(서연지)Hyun, Sangmin(현상민)
Publication Year
2018
Abstract
This study reconstructs past vegetation changes in southeastern Korea over the last 30 thousand years using plant waxes (i.e. long chain n-alkanes) and their carbon isotopic compositions (δ 13 C alk ) preserved in marine sediment core (KIODP 12-1) retrieved from the East Sea. Here we show changes in vegetation composition in the Korean peninsula in relation to the strength of the East Asian Summer Monsoon. During the Last Glacial Maximum (LGM), when the summer monsoon weakened, precipitation decreased and C 3 grassland expanded. After the LGM, the summer monsoon gradually intensified, increasing rainfall, and thus expanding the forestland coverage. Precipitation climaxed from 10 to 6 kyr BP, which includes the Holocene Climate Optimum. The grassland began to expand since 5 kyr BP due to climate warming and drying towards the present. The δ 13 C alk values may also have been influenced by agricultural activities, which is known to have begun since the late Neolithic (ca. 7.0~3.0 kyr BP). Our results demonstrate how changes in the global climate state influence regional atmospheric circulation and precipitation distribution, and consequently terrestrial plant composition in southeastern Korea. © 2018, Korea Ocean Research and Development Institute. All rights reserved.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1065
DOI
10.4217/OPR.2018.40.4.289
Bibliographic Citation
Ocean and Polar Research, v.40, no.4, pp.289 - 297, 2018
Publisher
Korea Ocean Research and Development Institute
Subject
biomarker; carbon isotope; climate variation; grassland; Holocene; Last Glacial Maximum; monsoon; paleoclimate; paleoenvironment; plant; vegetation dynamics; warming; wax; Korea
Keywords
Biomarker; C 3 plant; C 4 plant; Compound-specific stable isotopes; Plant wax
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Marine environmentology,Marine environmentology,Organic chemistry,해양환경학,화학해양학,유기화학

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