气候变化领域集成服务门户(CCPortal): Ecological memory of daily carbon exchange across the globe and its importance in drylands

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DOI	10.1111/ele.13363
	Ecological memory of daily carbon exchange across the globe and its importance in drylands
	Liu Y.; Schwalm C.R.; Samuels-Crow K.E.; Ogle K.
发表日期	2019
ISSN	1461023X
卷号	22 期号:11
英文摘要	How do antecedent (past) conditions influence land-carbon dynamics after those conditions no longer persist? In particular, quantifying such memory effects associated with the influence of past environmental (exogenous) and biological (endogenous) conditions is crucial for understanding and predicting the carbon cycle. Here we show, using data from 42 eddy covariance sites across six major biomes, that ecological memory—decomposed into environmental and biological memory components—of daily net carbon exchange (NEE) is critical for understanding the land-carbon metabolism, especially in drylands for which memory explains ~ 32% of the variation in NEE. The strong environmental memory in drylands was primarily driven by short- and long-term moisture status. Moreover, the strength of environmental memory scales with increasing water stress. This universal scaling relationship, emerging within and among major biomes, suggests a potential adaptive response to water limitation. Our findings underscore the necessity of considering ecological memory in experiments, observations and modelling. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Antecedent conditions; carbon exchange; carbon flux; dryland; ecological memory; environmental memory; hierarchical Bayesian model; lag effects; scaling relationship
语种	英语
scopus关键词	carbon; carbon dioxide; carbon cycle; ecology; ecosystem; Carbon; Carbon Cycle; Carbon Dioxide; Ecology; Ecosystem
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/121027
作者单位	Oak Ridge National Laboratory, Oak Ridge, TN, United States; School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, AZ, United States; Woods Hole Research Center, Falmouth, MA, United States; Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States; Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States
推荐引用方式 GB/T 7714	Liu Y.,Schwalm C.R.,Samuels-Crow K.E.,et al. Ecological memory of daily carbon exchange across the globe and its importance in drylands[J],2019,22(11).
APA	Liu Y.,Schwalm C.R.,Samuels-Crow K.E.,&Ogle K..(2019).Ecological memory of daily carbon exchange across the globe and its importance in drylands.Ecology Letters,22(11).
MLA	Liu Y.,et al."Ecological memory of daily carbon exchange across the globe and its importance in drylands".Ecology Letters 22.11(2019).