气候变化领域集成服务门户(CCPortal): Large and projected strengthening moisture limitation on end-of-season photosynthesis

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DOI	10.1073/pnas.1914436117
	Large and projected strengthening moisture limitation on end-of-season photosynthesis
	Zhang Y.; Parazoo N.C.; Williams A.P.; Zhou S.; Gentine P.
发表日期	2020
ISSN	0027-8424
起始页码	9216
结束页码	9222
卷号	117 期号:17
英文摘要	Terrestrial photosynthesis is regulated by plant phenology and environmental conditions, both of which experienced substantial changes in recent decades. Unlike early-season photosynthesis, which is mostly driven by temperature or wet-season onset, late-season photosynthesis can be limited by several factors and the underlying mechanisms are less understood. Here, we analyze the temperature and water limitations on the ending date of photosynthesis (EOP), using data from both remote-sensing and flux tower-based measurements. We find a contrasting spatial pattern of temperature and water limitations on EOP. The threshold separating these is determined by the balance between energy availability and soil water supply. This coordinated temperature and moisture regulation can be explained by “law of minimum,” i.e., as temperature limitation diminishes, higher soil water is needed to support increased vegetation activity, especially during the late growing season. Models project future warming and drying, especially during late season, both of which should further expand the water-limited regions, causing large variations and potential decreases in photosynthesis. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate change; End of photosynthesis; Gross primary production (GPP); Solar induced fluorescence (SIF); Water stress
语种	英语
scopus关键词	Article; dry season; energy balance; flux assay; photosynthesis; priority journal; remote sensing; seasonal variation; soil analysis; soil moisture; soil water content; temperature; vegetation; warming; water analysis; water supply; carbon cycle; chemistry; ecosystem; environmental monitoring; forest; metabolism; photosynthesis; physiology; plant; procedures; satellite imagery; season; soil; sunlight; chlorophyll; water; Carbon Cycle; Chlorophyll; Ecosystem; Environmental Monitoring; Forests; Photosynthesis; Plants; Satellite Imagery; Seasons; Soil; Sunlight; Temperature; Water
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/160970
作者单位	Zhang, Y., Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, United States, Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Parazoo, N.C., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States; Williams, A.P., Lamont–Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States; Zhou, S., Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, United States, Lamont–Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States, Earth Institute, Columbia University, New York, NY 10027, United States; Gentine, P., Department of Earth and Environmental Engineering, Columbia University, New York, NY 10027, United States, Earth Institute, Columbia University, New York, NY 10027, United States
推荐引用方式 GB/T 7714	Zhang Y.,Parazoo N.C.,Williams A.P.,et al. Large and projected strengthening moisture limitation on end-of-season photosynthesis[J],2020,117(17).
APA	Zhang Y.,Parazoo N.C.,Williams A.P.,Zhou S.,&Gentine P..(2020).Large and projected strengthening moisture limitation on end-of-season photosynthesis.Proceedings of the National Academy of Sciences of the United States of America,117(17).
MLA	Zhang Y.,et al."Large and projected strengthening moisture limitation on end-of-season photosynthesis".Proceedings of the National Academy of Sciences of the United States of America 117.17(2020).