DOI: 10.1016/j.palaeo.2015.02.037
论文题名: Tracing the North Atlantic decadal-scale climate variability in a late Holocene pollen record from southern Siberia
作者: Hildebrandt S. ; Müller S. ; Kalugin I.A. ; Dar'in A.V. ; Wagner M. ; Rogozin D.Y. ; Tarasov P.E.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 426 起始页码: 75
结束页码: 84
语种: 英语
英文关键词: Atlantic Multidecadal Oscillation
; Human impact
; Lake level
; Late Holocene
; Non-pollen palynomorphs
; Pollen
; Siberia
英文摘要: This paper presents a new palynological record from a 146. cm long finely laminated sediment core obtained in 2009 from the deep-water meromictic Lake Shira (54°30'38'N, 90°12''09'E; ca. 353. m. a.s.l.) situated in the Khakassian steppe region of southern Siberia between the rivers Ob' and Yenisei. The area is rich in lakes and represents an exceptionally well preserved sequence of Bronze and Iron Age archeological cultures. Little is known about the changes in vegetation and climate of the region during the Holocene. The palynological analysis of the core allows us to partly fill up this gap in current knowledge. The record of pollen and non-pollen palynomorphs presented here covers the past 2450. year interval with an average resolution of 22. years. The results obtained support the interpretation that the late Holocene vegetation changes around Lake Shira are mainly associated with large-scale atmospheric circulation processes controlling the regional water balance rather than with human activities. An attempt to trace human impact in the pollen assemblages provides no clear evidence for anthropogenic activity, except for the last few decades since ca. 1955, though the region has a long history of mobile pastoralists. For explanation of decadal-scale changes in the regional vegetation cover, the Artemisia/Chenopodiaceae (A/C) pollen ratio proved to be a reliable indicator of effective moisture availability. Using available fossil and published instrumental data our study suggests a link between the North Atlantic warmer/colder temperatures and higher/lower atmospheric precipitation (or moisture availability) in southern Siberia at multi-decadal to centennial scales. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68950
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Institute of Geological Sciences, Palaeontology, Free University Berlin, Malteserstraße 74-100, Building D, Berlin, Germany; Siberian Branch of Russian Academy of Sciences, Institute of Geology and Mineralogy, Prospekt akademika Koptyuga 3, Novosibirsk, Russian Federation; Eurasia Department/Beijing Branch Office, German Archaeological Institute, Im Dol 2-6, Berlin, Germany; Siberian Branch of Russian Academy of Sciences, Institute of Biophysics, Akademgorodok 50, str. 50, Krasnoyarsk, Russian Federation
Recommended Citation:
Hildebrandt S.,Müller S.,Kalugin I.A.,et al. Tracing the North Atlantic decadal-scale climate variability in a late Holocene pollen record from southern Siberia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,426