globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13420
论文题名:
Persistent and pervasive compositional shifts of western boreal forest plots in Canada
作者: Searle E.B.; Chen H.Y.H.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期:2
起始页码: 857
结束页码: 866
语种: 英语
英文关键词: biodiversity ; boreal forest ; climate change ; relative abundance ; species composition
Scopus关键词: Coniferophyta
英文摘要: Species compositional shifts have important consequences to biodiversity and ecosystem function and services to humanity. In boreal forests, compositional shifts from late-successional conifers to early-successional conifers and deciduous broadleaves have been postulated based on increased fire frequency associated with climate change truncating stand age-dependent succession. However, little is known about how climate change has affected forest composition in the background between successive catastrophic fires in boreal forests. Using 1797 permanent sample plots from western boreal forests of Canada measured from 1958 to 2013, we show that after accounting for stand age-dependent succession, the relative abundances of early-successional deciduous broadleaves and early-successional conifers have increased at the expense of late-successional conifers with climate change. These background compositional shifts are persistent temporally, consistent across all forest stand ages and pervasive spatially across the region. Rising atmospheric CO2 promoted early-successional conifers and deciduous broadleaves, and warming increased early-successional conifers at the expense of late-successional conifers, but compositional shifts were not associated with climate moisture index. Our results emphasize the importance of climate change on background compositional shifts in the boreal forest and suggest further compositional shifts as rising CO2 and warming will continue in the 21st century. © 2016 John Wiley & Sons Ltd
资助项目: We thank Ken Stadt and the Alberta Department of Agriculture and Forestry, Phil Loseth and the Saskatchewan Ministry of the Environment, and Shawn Meng and Manitoba Conservation and Water Stewardship for collecting and archiving the related data sets ; Gordon Kayahara, Chander Shahi, Samuel Bartels, Yong Luo, and Brian McLaren for their helpful comments for improving this article. This study was supported by the Natural Sciences and Engineering Research Council of Canada (RGPIN-2014-04181).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61078
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作者单位: Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, ON, Canada

Recommended Citation:
Searle E.B.,Chen H.Y.H.. Persistent and pervasive compositional shifts of western boreal forest plots in Canada[J]. Global Change Biology,2017-01-01,23(2)
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