气候变化领域集成服务门户(CCPortal): Tree carbon allocation explains forest drought-kill and recovery patterns

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DOI	10.1111/ele.13136
	Tree carbon allocation explains forest drought-kill and recovery patterns
	Trugman A.T.; Detto M.; Bartlett M.K.; Medvigy D.; Anderegg W.R.L.; Schwalm C.; Schaffer B.; Pacala S.W.
发表日期	2018
ISSN	1461023X
卷号	21 期号:10
英文摘要	The mechanisms governing tree drought mortality and recovery remain a subject of inquiry and active debate given their role in the terrestrial carbon cycle and their concomitant impact on climate change. Counter-intuitively, many trees do not die during the drought itself. Indeed, observations globally have documented that trees often grow for several years after drought before mortality. A combination of meta-analysis and tree physiological models demonstrate that optimal carbon allocation after drought explains observed patterns of delayed tree mortality and provides a predictive recovery framework. Specifically, post-drought, trees attempt to repair water transport tissue and achieve positive carbon balance through regrowing drought-damaged xylem. Furthermore, the number of years of xylem regrowth required to recover function increases with tree size, explaining why drought mortality increases with size. These results indicate that tree resilience to drought-kill may increase in the future, provided that CO2 fertilisation facilitates more rapid xylem regrowth. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Carbon metabolism; CO2 fertilisation; drought; hydraulic-carbon coupling; lagged mortality; optimality theory; plant hydraulics; stem respiration; vegetation model; xylem damage
语种	英语
scopus关键词	carbon; water; drought; forest; meta analysis; physiology; tree; xylem; Carbon; Droughts; Forests; Trees; Water; Xylem
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/121242
作者单位	Department of Biology, University of Utah, Salt Lake City, UT 84112, United States; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States; Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, United States; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86001, United States; Woods Hole Research Center, Falmouth, MA 02540, United States; Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544, United States
推荐引用方式 GB/T 7714	Trugman A.T.,Detto M.,Bartlett M.K.,et al. Tree carbon allocation explains forest drought-kill and recovery patterns[J],2018,21(10).
APA	Trugman A.T..,Detto M..,Bartlett M.K..,Medvigy D..,Anderegg W.R.L..,...&Pacala S.W..(2018).Tree carbon allocation explains forest drought-kill and recovery patterns.Ecology Letters,21(10).
MLA	Trugman A.T.,et al."Tree carbon allocation explains forest drought-kill and recovery patterns".Ecology Letters 21.10(2018).