气候变化领域集成服务门户(CCPortal): Moisture deficits limit growth of white spruce in the west-central boreal forest of North America

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DOI	10.1016/j.foreco.2020.117944
	Moisture deficits limit growth of white spruce in the west-central boreal forest of North America
	Hynes A.; Hamann A.
发表日期	2020
ISSN	0378-1127
卷号	461
英文摘要	Climate change may cause reduced forest productivity and higher tree mortality due to water deficits that result from increased evapotranspiration. Such limitations may occur in some areas of the North American boreal forest where precipitation is low and warming trends are high. This paper analyzes climatic factors that limit the growth of a commercially important and widespread boreal tree species, white spruce (Picea glauca (Moench) Voss), based on a range-wide dendroclimatological analysis of 9795 trees from 227 sample sites across the North American boreal forest. A bootstrapped response function analysis was conducted for monthly temperature and precipitation variables, and a multivariate regression tree analysis was used to group white spruce populations with similar response coefficients where climatic factors explained 46% of the total variance in response coefficients. The results of this study show that white spruce populations in the west-central boreal forest of North America are the most precipitation-limited group and therefore likely to be most susceptible to climate change. Populations both to the north and south of this group appear less vulnerable, and eastern populations generally do not experience growth-limiting moisture deficits. Regional climate change projections suggest that moisture limitations will become more pronounced in the future, especially for southwest and west-central boreal tree populations. © 2020 Elsevier B.V.
英文关键词	Boreal; Climate change; Dendrochronology; Dendroclimatology; White spruce
语种	英语
scopus关键词	Factor analysis; Forestry; Moisture; Population statistics; Regression analysis; Boreal; Dendrochronology; Dendroclimatology; Forest productivity; Multivariate regression trees; Regional climate changes; Response coefficient; White spruce; Climate change; boreal forest; climate change; coniferous tree; dendrochronology; dendroclimatology; environmental factor; evapotranspiration; mortality; regression analysis; Analysis Of Variance; Forestry; Moisture; Picea Glauca; Regression Analysis; Trees; North America; Picea glauca
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155438
作者单位	Department of Renewable Resources, Faculty of Agricultural, Life, and Environmental Sciences, University of Alberta, 751 General Services Building, Edmonton, AB T6G 2H1, Canada
推荐引用方式 GB/T 7714	Hynes A.,Hamann A.. Moisture deficits limit growth of white spruce in the west-central boreal forest of North America[J],2020,461.
APA	Hynes A.,&Hamann A..(2020).Moisture deficits limit growth of white spruce in the west-central boreal forest of North America.Forest Ecology and Management,461.
MLA	Hynes A.,et al."Moisture deficits limit growth of white spruce in the west-central boreal forest of North America".Forest Ecology and Management 461(2020).