气候变化领域集成服务门户(CCPortal): Widespread decline in winds delayed autumn foliar senescence over high latitudes

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DOI	10.1073/pnas.2015821118
	Widespread decline in winds delayed autumn foliar senescence over high latitudes
	Wu C.; Wang J.; Ciais P.; Peñuelas J.; Zhang X.; Sonnentag O.; Tian F.; Wang X.; Wang H.; Liu R.; Fu Y.H.; Ge Q.
发表日期	2021
ISSN	00278424
卷号	118 期号:16
英文摘要	The high northern latitudes (>50°) experienced a pronounced surface stilling (i.e., decline in winds) with climate change. As a drying factor, the influences of changes in winds on the date of autumn foliar senescence (DFS) remain largely unknown and are potentially important as a mechanism explaining the interannual variability of autumn phenology. Using 183,448 phenological observations at 2,405 sites, long-term site-scale water vapor and carbon dioxide flux measurements, and 34 y of satellite greenness data, here we show that the decline in winds is significantly associated with extended DFS and could have a relative importance comparable with temperature and precipitation effects in contributing to the DFS trends. We further demonstrate that decline in winds reduces evapotranspiration, which results in less soil water losses and consequently more favorable growth conditions in late autumn. In addition, declining winds also lead to less leaf abscission damage which could delay leaf senescence and to a decreased cooling effect and therefore less frost damage. Our results are potentially useful for carbon flux modeling because an improved algorithm based on these findings projected overall widespread earlier DFS than currently expected by the end of this century, contributing potentially to a positive feedback to climate. © This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).
英文关键词	Climate change; Foliar senescence; High latitudes
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179842
作者单位	The Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of the Chinese Academy of Sciences, Beijing, 100049, China; Department of Geography, The Ohio State University, Columbus, OH 43210, United States; IPSL-LSCE CEA CNRS UVSQ, Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette, 91191, France; Global Ecology Unit CREAF-CSIC-UAB, CSIC, Barcelona, 08193, Spain; Cerdanyola del Valles, CREAF, Barcelona, Catalonia, 08193, Spain; Geospatial Sciences Center of Excellence, Department of Geography, South Dakota State University, Brookings, SD 57007-3510, United States; Département de géographie and Centre d'études Nordiques, Université de Montréal, Montréal, QC H2V 2B8, Canada; School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, 430079, China; College of Water Sciences, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	Wu C.,Wang J.,Ciais P.,et al. Widespread decline in winds delayed autumn foliar senescence over high latitudes[J],2021,118(16).
APA	Wu C..,Wang J..,Ciais P..,Peñuelas J..,Zhang X..,...&Ge Q..(2021).Widespread decline in winds delayed autumn foliar senescence over high latitudes.Proceedings of the National Academy of Sciences of the United States of America,118(16).
MLA	Wu C.,et al."Widespread decline in winds delayed autumn foliar senescence over high latitudes".Proceedings of the National Academy of Sciences of the United States of America 118.16(2021).