DOI: 10.1016/j.palaeo.2017.03.009
论文题名: High-resolution palynological record of Holocene climatic and oceanographic changes in the northern South China Sea
作者: Li Z. ; Pospelova V. ; Liu L. ; Zhou R. ; Song B.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 483 起始页码: 94
结束页码: 124
语种: 英语
英文关键词: Asian monsoon
; Dinoflagellate cysts
; Holocene
; Palynology
; Sea level change
; The South China Sea
英文摘要: For the first time, palynological records of terrestrial palynomorphs and dinoflagellate cysts are investigated in a sediment core from the northern South China Sea (SCS) covering the last 12,500 years. Both terrestrial and marine palynomorph records show strong signals of the sea-level change during the studied interval. The highest herb pollen content was associated with extensive grasslands on the exposed shelf at the low sea-level stand during the Younger Dryas and early Holocene. The increase in fern spores and decrease in concentrations of dinoflagellate cysts and terrestrial palynomorphs was observed during the sea-level rise interval from 12,500 to ~ 6800 (or 6000) cal yr BP. Then, the sea level became stabilized and consistently low dinoflagellate cyst abundances and high abundances of fern spores were recorded. A high abundance of Impagidinium in the period ~ 12,000–10,400 cal yr BP possibly resulted from increased input of western Philippine Sea waters into the SCS and the branching of the Kuroshio Current. A short-term decrease of Impagidinium at ~ 11,700–11,000 cal yr BP corresponding to the MWP-1B event might be associated with input of the East China Sea waters through the Taiwan Strait. The relationship between the sedimentation rates and the concentrations of terrestrial palynomorphs indicates a water-dominant transport for pollen and spore dispersal prior to ~ 6300 cal yr BP, whereas wind transport became more prominent thereafter. The timing of this change corresponds to the highest sea-level stand at ~ 6800–6000 cal yr BP, when the present oceanographic setting was formed. The mid-Holocene Optimum can be seen by the highest abundance of subtropical-tropical broad-leaved arboreal pollen and by the highest abundances of Dapsilidinium pastielsii. Three strengthened winter monsoon intervals at ~ 5500 cal yr BP, 4000 cal yr BP, and 2500 cal yr BP are reflected by increases in Pinus pollen content after the present oceanographic condition formed. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67776
Appears in Collections: 过去全球变化的重建
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作者单位: School of Earth and Ocean Sciences, University of Victoria, PO Box 1700, STN CSC, Victoria, British Columbia, Canada; First Institute of Oceanography, 6 Xianxialing Road, Qingdao, Shangdong, China; State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai, China; Quaternary Geology Department, Geological Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea
Recommended Citation:
Li Z.,Pospelova V.,Liu L.,et al. High-resolution palynological record of Holocene climatic and oceanographic changes in the northern South China Sea[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,483