DOI: 10.1016/j.quascirev.2014.08.008
Scopus记录号: 2-s2.0-84928146027
论文题名: Holocene cyclic climatic variations and the role of the Pacific Ocean as recorded in varved sediments from northeastern China
作者: Chu G. ; Sun Q. ; Xie M. ; Lin Y. ; Shang W. ; Zhu Q. ; Shan Y. ; Xu D. ; Rioual P. ; Wang L. ; Liu J.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 102 起始页码: 85
结束页码: 95
语种: 英语
英文关键词: Alkanes
; Compound-specific δ13C values
; Cyclic climatic variation
; East Asia summer monsoon
; Varved sediment
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Carbon
; Chains
; Isotopes
; Lakes
; Organic carbon
; Paraffins
; Precipitation (meteorology)
; Productivity
; Rain
; Solar energy
; Spectrum analysis
; Surface waters
; Time series analysis
; Vegetation
; C values
; Climatic variation
; Long chain n-alkanes
; Monsoonal precipitation
; Sea surface temperature (SST)
; Sedimentary sequence
; Summer monsoon
; Summer monsoon rainfall
; Oceanography
; carbon isotope
; climate variation
; Holocene
; lake ecosystem
; monsoon
; oligotrophic environment
; proxy climate record
; sea surface temperature
; sedimentary sequence
; timescale
; varve
; China
; Jilin
; Pacific Ocean
; Xiaolongwan Lake
; algae
英文摘要: We present an n-alkane and compound-specific carbon isotope record of the past 9ka from the annually laminated sedimentary sequence of Lake Xiaolongwan, northeastern China. The n-alkane distribution suggests that Lake Xiaolongwan has undergone a shift from an oligotrophic state with low algal production and little emergent/submerged macrophytes in the early Holocene, to aeutrophic state with high algal production and abundant emergent/submerged macrophytes since the middle Holocene. The pattern of variation observed in the biomarker proxies ACL (the n-alkane average chain length), Paq (aquatic macrophyte versus aquatic macrophyte and terrestrial plant ratio), and LPTP (lake productivity/terrigenous organic production) is throughout the record similar to that of the total organic carbon. The variation of compound-specific carbon isotopic values in the middle- and short-chain alkanes was mainly regulated by lake productivity and the accumulating organic pool through time. In this forested region, where the vegetation is dominated by C3 plants, the long-chain n-alkanes (C27 -C31 ) are predominantly derived from leaf wax lipids. The compound-specific δ13C27-31 value is sensitive to effective precipitation, and therefore represents a useful indicator of regional monsoonal precipitation. Spectral analysis on the δ13C27-31 time series reveals significant periodicities of 87-89, 205-212, 1020-1050 and 1750-2041 years. On the centennial timescale, the quasi-periodicities around 88 and 210 years suggest a strong link between solar activity and monsoon rainfall. The millennial monsoon cycle in northeastern China is associated with sea surface temperature (SST) variations in two active centers of the summer monsoon, the western Pacific Subtropical High (WPSH) and the Okhotsk High. Increasing SST in the subtropical sea may cause a northwards shift of the WPSH, which extends the monsoon rain band (Meiyu) to northeastern China, and thus increasing rainfall in that region. Meanwhile, decreasing SST in the Okhotsk Sea may strengthen the Okhotsk high, bringing more moisture into northeastern China. We suggest that the Pacific Ocean is a main regulator for summer monsoon rainfall in northeastern China at present and at different time scales during the Holocene. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60151
Appears in Collections: 过去全球变化的重建
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作者单位: Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; National Research Center of Geoanalysis, Beijing, China
Recommended Citation:
Chu G.,Sun Q.,Xie M.,et al. Holocene cyclic climatic variations and the role of the Pacific Ocean as recorded in varved sediments from northeastern China[J]. Quaternary Science Reviews,2014-01-01,102