气候变化领域集成服务门户(CCPortal): Regional variability in the response of alpine treelines to climate change

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DOI	10.1007/s10584-020-02743-0
	Regional variability in the response of alpine treelines to climate change
	Davis E.L.; Brown R.; Daniels L.; Kavanagh T.; Gedalof Z.
发表日期	2020
ISSN	0165-0009
英文摘要	The distributions of many high-elevation tree species have shifted as a result of recent climate change; however, there is substantial variability in the movement of alpine treelines at local to regional scales. In this study, we derive records of tree growth and establishment from nine alpine treeline ecotones in the Canadian Rocky Mountains, characterise the influence of seasonal climate variables on four tree species (Abies lasiocarpa, Larix lyallii, Picea engelmannii, Pinus albicaulis) and estimate the degree to which treeline movement in the twentieth century has lagged or exceeded the rate predicted by recent temperature warming. The growth and establishment records revealed a widespread increase in radial growth, establishment frequency and stand density beginning in the mid-twentieth century. Coinciding with a period of warming summer temperatures and favourable moisture availability, these changes appear to have supported upslope treeline advance at all sites (range, 0.23–2.00 m/year; mean, 0.83 + 0.67 m/year). However, relationships with seasonal climate variables varied between species, and the rates of treeline movement lagged those of temperature warming in most cases. These results indicate that future climate change impacts on treelines in the region are likely to be moderated by species composition and to occur more slowly than anticipated based on temperature warming alone. © 2020, Springer Nature B.V.
英文关键词	Alpine treeline; Climate change; Dendrochronology; Subalpine forest; Tree establishment; Western Canada
语种	英语
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147322
作者单位	Department of Geography, Environment and Geomatics, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; Department of Forest and Conservation Sciences, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada; Department of Earth, Environmental and Geographic Sciences, University of British Columbia, 1177 Research Road, Kelowna, BC V1V 1V7, Canada
推荐引用方式 GB/T 7714	Davis E.L.,Brown R.,Daniels L.,et al. Regional variability in the response of alpine treelines to climate change[J],2020.
APA	Davis E.L.,Brown R.,Daniels L.,Kavanagh T.,&Gedalof Z..(2020).Regional variability in the response of alpine treelines to climate change.Climatic Change.
MLA	Davis E.L.,et al."Regional variability in the response of alpine treelines to climate change".Climatic Change (2020).