气候变化领域集成服务门户(CCPortal): On the Functional Relationship Between Fluorescence and Photochemical Yields in Complex Evergreen Needleleaf Canopies

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DOI	10.1029/2020GL087858
	On the Functional Relationship Between Fluorescence and Photochemical Yields in Complex Evergreen Needleleaf Canopies
	Maguire A.J.; Eitel J.U.H.; Griffin K.L.; Magney T.S.; Long R.A.; Vierling L.A.; Schmiege S.C.; Jennewein J.S.; Weygint W.A.; Boelman N.T.; Bruner S.G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	Recent advancements in understanding remotely sensed solar-induced chlorophyll fluorescence often suggest a linear relationship with gross primary productivity at large spatial scales. However, the quantum yields of fluorescence and photochemistry are not linearly related, and this relationship is largely driven by irradiance. This raises questions about the mechanistic basis of observed linearity from complex canopies that experience heterogeneous irradiance regimes at subcanopy scales. We present empirical data from two evergreen forest sites that demonstrate a nonlinear relationship between needle-scale observations of steady-state fluorescence yield and photochemical yield under ambient irradiance. We show that accounting for subcanopy and diurnal patterns of irradiance can help identify the physiological constraints on needle-scale fluorescence at 70–80% accuracy. Our findings are placed in the context of how solar-induced chlorophyll fluorescence observations from spaceborne sensors relate to diurnal variation in canopy-scale physiology. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Chlorophyll; Needles; Physiology; Plants (botany); Chlorophyll fluorescence; Evergreen forests; Functional relationship; Gross primary productivity; Linear relationships; Non-linear relationships; Space-borne sensor; Steady state fluorescences; Fluorescence; canopy architecture; diurnal variation; evergreen forest; fluorescence; functional role; induced response; irradiance; photochemistry; physiology; quantum mechanics; steady-state equilibrium
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170384
作者单位	Department of Natural Resources and Society, University of Idaho, Moscow, ID, United States; McCall Outdoor Science School, University of Idaho, McCall, ID, United States; Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, NY, United States; Department of Plant Sciences, University of California, Davis, CA, United States; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Department of Fish and Wildlife Sciences, University of Idaho, Moscow, ID, United States
推荐引用方式 GB/T 7714	Maguire A.J.,Eitel J.U.H.,Griffin K.L.,et al. On the Functional Relationship Between Fluorescence and Photochemical Yields in Complex Evergreen Needleleaf Canopies[J],2020,47(9).
APA	Maguire A.J..,Eitel J.U.H..,Griffin K.L..,Magney T.S..,Long R.A..,...&Bruner S.G..(2020).On the Functional Relationship Between Fluorescence and Photochemical Yields in Complex Evergreen Needleleaf Canopies.Geophysical Research Letters,47(9).
MLA	Maguire A.J.,et al."On the Functional Relationship Between Fluorescence and Photochemical Yields in Complex Evergreen Needleleaf Canopies".Geophysical Research Letters 47.9(2020).