DOI: 10.1111/gcb.13855
Scopus记录号: 2-s2.0-85029227069
论文题名: Contributions of insects and droughts to growth decline of trembling aspen mixed boreal forest of western Canada
作者: Chen L. ; Huang J.-G. ; Dawson A. ; Zhai L. ; Stadt K.J. ; Comeau P.G. ; Whitehouse C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 2 起始页码: 655
结束页码: 667
语种: 英语
英文关键词: boreal forest
; drought
; forest decline
; insect outbreaks
; trembling aspen
Scopus关键词: boreal forest
; climate change
; drought
; global change
; growth
; insect
; mixed forest
; mortality
; population decline
; spatiotemporal analysis
; tree ring
; Canada
; Hexapoda
; Populus tremuloides
英文摘要: Insects, diseases, fire and drought and other disturbances associated with global climate change contribute to forest decline and mortality in many parts of the world. Forest decline and mortality related to drought or insect outbreaks have been observed in North American aspen forests. However, little research has been done to partition and estimate their relative contributions to growth declines. In this study, we combined tree-ring width and basal area increment series from 40 trembling aspen (Populus tremuloides Michx.) sites along a latitudinal gradient (from 52° to 58°N) in western Canada and attempted to investigate the effect of drought and insect outbreaks on growth decline, and simultaneously partition and quantify their relative contributions. Results indicated that the influence of drought on forest decline was stronger than insect outbreaks, although both had significant effects. Furthermore, the influence of drought and insect outbreaks showed spatiotemporal variability. In addition, our data suggest that insect outbreaks could be triggered by warmer early spring temperature instead of drought, implicating that potentially increased insect outbreaks are expected with continued warming springs, which may further exacerbate growth decline and death in North America aspen mixed forests. © 2017 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110555
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; Department of Geosciences, University of Arizona, Tucson, AZ, United States; Forest Management Branch, Alberta Agriculture and Forestry, Edmonton, AB, Canada; Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada
Recommended Citation:
Chen L.,Huang J.-G.,Dawson A.,et al. Contributions of insects and droughts to growth decline of trembling aspen mixed boreal forest of western Canada[J]. Global Change Biology,2018-01-01,24(2)