气候变化领域集成服务门户(CCPortal): Water availability predicts forest canopy height at the global scale

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DOI	10.1111/ele.12525
	Water availability predicts forest canopy height at the global scale
	Klein T.; Randin C.; Körner C.
发表日期	2015
ISSN	1461-023X
EISSN	1461-0248
卷号	18 期号:12
英文摘要	The tendency of trees to grow taller with increasing water availability is common knowledge. Yet a robust, universal relationship between the spatial distribution of water availability and forest canopy height (H) is lacking. Here, we created a global water availability map by calculating an annual budget as the difference between precipitation (P) and potential evapotranspiration (PET) at a 1-km spatial resolution, and in turn correlated it with a global H map of the same resolution. Across forested areas over the globe, Hmean increased with P-PET, roughly: Hmean (m) = 19.3 + 0.077*(P-PET). Maximum forest canopy height also increased gradually from 5 to ~ 50 m, saturating at ~ 45 m for P-PET > 500 mm. Forests were far from their maximum height potential in cold, boreal regions and in disturbed areas. The strong association between forest height and P-PET provides a useful tool when studying future forest dynamics under climate change, and in quantifying anthropogenic forest disturbance. © 2015 John Wiley & Sons Ltd/CNRS.
英文关键词	Evapotranspiration; Forest suppression; Hydraulic constraints; Range limits; Tree height
学科领域	annual variation; evapotranspiration; forest canopy; forest dynamics; global perspective; growth rate; hydrological regime; precipitable water; range size; spatial resolution; water availability; water stress; biological model; forest; growth, development and aging; temperature; tree; water cycle; Forests; Models, Biological; Temperature; Trees; Water Cycle
语种	英语
scopus关键词	annual variation; evapotranspiration; forest canopy; forest dynamics; global perspective; growth rate; hydrological regime; precipitable water; range size; spatial resolution; water availability; water stress; biological model; forest; growth, development and aging; temperature; tree; water cycle; Forests; Models, Biological; Temperature; Trees; Water Cycle
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118672
作者单位	Institute of Botany, University of Basel, Schönbeinstrasse 6, Basel, 4056, Switzerland; Department of Ecology and Evolution, University of Lausanne, Basel, Switzerland
推荐引用方式 GB/T 7714	Klein T.,Randin C.,Körner C.. Water availability predicts forest canopy height at the global scale[J],2015,18(12).
APA	Klein T.,Randin C.,&Körner C..(2015).Water availability predicts forest canopy height at the global scale.Ecology Letters,18(12).
MLA	Klein T.,et al."Water availability predicts forest canopy height at the global scale".Ecology Letters 18.12(2015).