Vegetation evolution and millennial-scale climatic fluctuations since last glacial maximum in pollen record from northern South China Sea

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doi: 10.1360/04wd0084
Author(s): Luo Yunli; Sun Xiangjun
Author Affiliation(s): Primary:
Chinese Academy of Sciences, Institute of Botany, Beijing, China
Other:
Tongji University, China
Volume Title: Chinese Science Bulletin
Source: Chinese Science Bulletin, 50(8), p.793-799. Publisher: Science Press, Beijing, China. ISSN: 1001-6538
Note: In English. 32 refs.; illus., incl. 1 table
Summary: In order to study vegetation evolution and environmental change since the Last Glacial Maximum (LGM), a total of 180 pollen samples with an average time resolution of 150 years were analyzed on the top parts (0-31 m, 0-27 kaBP) of deep sea sediments from ODP Site 1144 (20°3.18'N, 1170°25.14'E), northeastern SCS. The characteristic features of pollen diagram include that pine dominates in the interglacial, and herb pollen dominates with a good deal of tropical-subtropical pollen in the last glacial, and from 18 kaBP the tropical-subtropical pollen influx rose abruptly, while the herbaceous pollen influx and percentage dropped quickly, indicating that climate turned warmer and more humid, and more tropical-subtropical vegetation grew on the mainland and the emerging continental shelf, while the grassland on the shelf diminished. A detailed comparison shows an earlier change of pollen assemblages at the glacial-interglacial transition between MIS6 and 5 (Termination II) than the ice volume change indicated by the oxygen isotope record, implying that mid-low latitude climate warming preceded ice sheet retreat. Millennial-scale climatic fluctuations of vegetation change in pollen record are also discussed.
Year of Publication: 2005
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Absolute age; Asia; Assemblages; Biologic evolution; C-14; Carbon; Cenozoic; China; Chronostratigraphy; Climate change; Coniferales; Continental shelf; Dates; Deglaciation; Far East; Fluctuations; Glacial geology; Glaciation; Grasslands; Gymnospermae; Ice sheets; Isotope ratios; Isotopes; Last glacial maximum; Leg 184; Microfossils; Miospores; North Pacific; Northwest Pacific; O-18/O-16; ODP Site 1144; Ocean Drilling Program; Oxygen; Pacific Ocean; Paleoclimatology; Paleoenvironment; Palynomorphs; Pinaceae; Pinus; Plantae; Pleistocene; Pollen; Quaternary; Radioactive isotopes; South China Sea; Spermatophyta; Stable isotopes; Vegetation; West Pacific
Coordinates: N200311 N200311 E1172508 E1172508
Record ID: 2005074092
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