气候变化领域集成服务门户(CCPortal): Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees

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DOI	10.1126/science.abd8911
	Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees
	Zani D.; Crowther T.W.; Mo L.; Renner S.S.; Zohner C.M.
发表日期	2020
ISSN	0036-8075
起始页码	1066
结束页码	1071
卷号	370 期号:6520
英文摘要	Changes in the growing-season lengths of temperate trees greatly affect biotic interactions and global carbon balance. Yet future growing-season trajectories remain highly uncertain because the environmental drivers of autumn leaf senescence are poorly understood. Using experiments and long-term observations, we show that increases in spring and summer productivity due to elevated carbon dioxide, temperature, or light levels drive earlier senescence. Accounting for this effect improved the accuracy of senescence predictions by 27 to 42% and reversed future predictions from a previously expected 2- to 3-week delay over the rest of the century to an advance of 3 to 6 days. These findings demonstrate the critical role of sink limitation in governing the end of seasonal activity and reveal important constraints on future growing-season lengths and carbon uptake of trees. © 2020 American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon dioxide; autumn; environmental effect; growing season; leaf; nutrient uptake; prediction; senescence; temperate forest; Article; autumn; Betula pendula; carbon cycle; environmental change; fertilization; leaf senescence; measurement accuracy; nonhuman; nutrient supply; phenology; photosynthesis; photosynthesis influenced autumn phenology; precipitation; prediction; priority journal; seasonal variation; spring; summer; time series analysis; aging; carbon cycle; metabolism; plant leaf; season; tree; Aging; Carbon Cycle; Carbon Dioxide; Photosynthesis; Plant Leaves; Seasons; Trees
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246131
作者单位	Institute of Integrative Biology, ETH Zurich (Swiss Federal Institute of Technology), Universitätsstrasse 16, Zurich, 8092, Switzerland; Systematic Botany and Mycology, University of Munich (LMU), Menzinger Str. 67, Munich, 80638, Germany
推荐引用方式 GB/T 7714	Zani D.,Crowther T.W.,Mo L.,et al. Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees[J],2020,370(6520).
APA	Zani D.,Crowther T.W.,Mo L.,Renner S.S.,&Zohner C.M..(2020).Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees.Science,370(6520).
MLA	Zani D.,et al."Increased growing-season productivity drives earlier autumn leaf senescence in temperate trees".Science 370.6520(2020).