Holocene Treeline History and Climate Change Across Northern Eurasia

Quaternary Research - Tập 53 Số 3 - Trang 302-311 - 2000
Glen M. MacDonald1, Andrei A. Velichko2, Constantin V. Kremenetski2, О. К. Борисова2, А. А. Гольева2, Andrei Andreev2, Les C. Cwynar3, R. T. Riding3, Steven L. Forman4, T. W. D. Edwards5, Ramón Aravena5, Dan Hammarlund6, Julian M. Szeicz7, Valery N. Gattaulin8
1Departments of Geography and Biology, UCLA, Los Angeles, California, 90095-1524
2Institute of Geography, Russian Academy of Science, Moscow, Russia, 109017
3Department of Biology, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 6E1
4Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois, 60607-7059
5Department of Earth Sciences, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.
6Department of Quaternary Geology, Lund University, Tornav 13, S-223, 63 Lund, Sweden
7Department of Geography, Queen's University, Kingston, Ontario, Canada K7L 3N6
8Research Institute for Marine Geology and Geophysics, Riga, Latvia, LV-1226

Tóm tắt

AbstractRadiocarbon-dated macrofossils are used to document Holocene treeline history across northern Russia (including Siberia). Boreal forest development in this region commenced by 10,000 yr B.P. Over most of Russia, forest advanced to or near the current arctic coastline between 9000 and 7000 yr B.P. and retreated to its present position by between 4000 and 3000 yr B.P. Forest establishment and retreat was roughly synchronous across most of northern Russia. Treeline advance on the Kola Peninsula, however, appears to have occurred later than in other regions. During the period of maximum forest extension, the mean July temperatures along the northern coastline of Russia may have been 2.5° to 7.0°C warmer than modern. The development of forest and expansion of treeline likely reflects a number of complimentary environmental conditions, including heightened summer insolation, the demise of Eurasian ice sheets, reduced sea-ice cover, greater continentality with eustatically lower sea level, and extreme Arctic penetration of warm North Atlantic waters. The late Holocene retreat of Eurasian treeline coincides with declining summer insolation, cooling arctic waters, and neoglaciation.

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Tài liệu tham khảo

Khotinsky, 1984, Holocene vegetation history, Late Quaternary Environments of the USSR, 179

10.1029/96PA02711

10.1029/95GL00301

Seppä, Pollen-stratigraphical evidence of Holocene hydrological change in northern Fennoscandia supported by independent isotopic data, Journal of Paleolimnology

10.1029/93PA03301

10.1007/s003820050202

10.1007/BF01030491

10.2307/2265823

10.1017/S0033822200013904

10.1038/371052a0

10.2307/2997373

10.1126/science.274.5290.1155

Kutzbach, 1993, Simulated climatic changes: Results of the COHMAP climate-model experiments, Global Climates Since the Last Glacial Maximum, 24

10.1029/98GL00950

10.1029/94PA01441

Peterson, 1993, Vegetational and climatic history of the western former Soviet Union, Global Climates Since the Last Glacial Maximum, 169

1996, Feedbacks between climate and the boreal forest during the Holocene epoch, Global Biogeochemical Cycles, 10, 727

10.1029/95JD02418

10.2307/1552146

Eronen, 1993, Pine megafossils as indicators of Holocene climatic changes in Fennoscandia, Oscillations of the Alpine and Polar Tree Limits in the Holocene, 29

10.1029/JD093iD07p08283

Wohlfarth, 1995, Early Holocene environment on Bjornoya (Svalbard) inferred from multidisciplinary lake sediment studies, Polar Research, 14, 253

1985

10.1038/342637a0

10.2307/2265591

10.1146/annurev.es.22.110191.001141

10.1177/095968369100100303

10.2307/1552004

10.1126/science.280.5371.1916

10.3402/polar.v11i1.6712

1991

10.1007/BF00211619

10.1038/387384a0

10.1191/095968300667807510

Birks, 1985, USSR Academy of Sciences, Leningrad, Quaternary Research, 9, 139

10.2307/2845499

10.1016/0277-3791(93)90012-B

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Quaternary Research

Tập 53 Số 3

302-311

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