globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.08.026
论文题名:
Rapid vegetation shifts in the Uinta Mountains (Utah and Wyoming, USA) during the Late Pleistocene and Holocene
作者: Louderback L.A.; Rhode D.; Madsen D.B.; Metcalf M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 438
起始页码: 327
结束页码: 343
语种: 英语
英文关键词: Cold air drainage ; Lodgepole pine ; Microclimate ; Pollen analysis ; Treeline ; Uinta Mountains ; Younger Dryas
英文摘要: The Uinta Mountains lie along an important transition between major climate regimes and thus are sensitive to major climatic changes and consequent vegetation shifts. Two pollen cores from montane Uinta sites on the Utah-Wyoming border (Marsh Lake Bog and Camp Bog, respectively) were used to analyze vegetation shifts from the latest Pleistocene through the Holocene. The records correspond with those from adjacent portions of the Rocky Mountains, all demonstrating a major shift from alpine steppe to open spruce parkland at ~ 11,700-11,200 cal yr BP. A second major shift to lodgepole pine forest began at ~ 8400 cal yr BP at Marsh Lake Bog and could have been a direct response of the dominant species to warmer conditions and/or the result of subtle changes in the competitive hierarchy of tree species near a sensitive ecotone. The difference in the rate and full expression of lodgepole forest development (taking nearly 2000. years longer at Camp Bog) was probably due to a set of complex and local factors, such as cold air drainage and landscape position. Lodgepole pine forest persisted throughout the late Holocene and appears to be the long-term regional "climax" forest, rather than a seral habitat. Fire does not appear to have triggered the middle Holocene shift from spruce-dominated to lodgepole pine-dominated forests in this area but may have contributed to its long-term persistence to the present day. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68795
Appears in Collections:过去全球变化的重建

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作者单位: Natural History Museum of Utah, Department of Anthropology, University of Utah, 301 Wakara Way, Salt Lake City, UT, United States; Division of Earth and Ecosystem Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, United States; Texas Archaeological Research Laboratory, University of Texas at Austin, 1 University Station R7500, Austin, TX, United States; Metcalf Archaeological Consultants, Inc. and Center for Mountain and Plains Archaeology, Colorado State University, PO Box 2062, Eagle, CO, United States

Recommended Citation:
Louderback L.A.,Rhode D.,Madsen D.B.,et al. Rapid vegetation shifts in the Uinta Mountains (Utah and Wyoming, USA) during the Late Pleistocene and Holocene[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,438
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