DOI: 10.1016/j.palaeo.2013.06.033
论文题名: A pollen-climate transfer function from the tundra and taiga vegetation in Arctic Siberia and its applicability to a Holocene record
作者: Klemm J. ; Herzschuh U. ; Pisaric M.F.J. ; Telford R.J. ; Heim B. ; Pestryakova L.A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 386 起始页码: 702
结束页码: 713
语种: 英语
英文关键词: Autocorrelation
; Mean July temperature
; Reconstruction
; Weighted-average partial least squares
; Yakutia
英文摘要: This study aims to establish, evaluate, and apply a modern pollen-climate transfer function from the transition zone between arctic tundra and light-needled taiga in Arctic Siberia. Lacustrine samples (n=96) from the northern Siberian lowlands of Yakutia were collected along four north-to-south transects crossing the arctic forest line. Samples span a broad temperature and precipitation gradient (mean July temperature, TJuly: 7.5-18.7°C; mean annual precipitation, Pann: 114-315mm/yr). Redundancy analyses are used to examine the relationship between the modern pollen signal and corresponding vegetation types and climate. Performance of transfer functions for TJuly and Pann were cross-validated and tested for spatial autocorrelation effects. The root mean square errors of prediction are 1.67°C for TJuly and 40mm/yr for Pann. A climate reconstruction based on fossil pollen spectra from a Siberian Arctic lake sediment core spanning the Holocene yielded cold conditions for the Late Glacial (1-2°C below present TJuly). Warm and moist conditions were reconstructed for the early to mid Holocene (2°C higher TJuly than present), and climate conditions similar to modern ones were reconstructed for the last 4000years. In conclusion, our modern pollen data set fills the gap of existing regional calibration sets with regard to the underrepresented Siberian tundra-taiga transition zone. The Holocene climate reconstruction indicates that the temperature deviation from modern values was only moderate despite the assumed Arctic sensitivity to present climate change. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69658
Appears in Collections: 过去全球变化的重建
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作者单位: Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Potsdam, Germany; Department of Geoscience, University of Potsdam, Potsdam, Germany; Department of Geography, Brock University, St. Catharines, Canada; Department of Biology, University of Bergen, Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway; Joint Russian-German Laboratory (BioM), North-Eastern Federal University, Yakutsk, Russian Federation
Recommended Citation:
Klemm J.,Herzschuh U.,Pisaric M.F.J.,et al. A pollen-climate transfer function from the tundra and taiga vegetation in Arctic Siberia and its applicability to a Holocene record[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,386