globalchange  > 气候变化与战略
DOI: 10.1111/nph.16314
论文题名:
Historical changes in the stomatal limitation of photosynthesis: empirical support for an optimality principle
作者: Lavergne A.; Voelker S.; Csank A.; Graven H.; de Boer H.J.; Daux V.; Robertson I.; Dorado-Liñán I.; Martínez-Sancho E.; Battipaglia G.; Bloomfield K.J.; Still C.J.; Meinzer F.C.; Dawson T.E.; Julio Camarero J.; Clisby R.; Fang Y.; Menzel A.; Keen R.M.; Roden J.S.; Prentice I.C.
刊名: New Phytologist
ISSN: 0028646X
出版年: 2020
卷: 225, 期:6
语种: 英语
英文关键词: leaf-internal CO2 concentration ; least-cost hypothesis ; optimality ; stable carbon isotopes ; tree rings ; water-use efficiency
Scopus关键词: carbon isotope ; chronology ; empirical analysis ; environmental conditions ; partial pressure ; photosynthesis ; stable isotope ; stomata ; stomatal conductance ; tree ring ; water use efficiency
英文摘要: The ratio of leaf internal (ci) to ambient (ca) partial pressure of CO2, defined here as χ, is an index of adjustments in both leaf stomatal conductance and photosynthetic rate to environmental conditions. Measurements and proxies of this ratio can be used to constrain vegetation model uncertainties for predicting terrestrial carbon uptake and water use. We test a theory based on the least-cost optimality hypothesis for modelling historical changes in χ over the 1951–2014 period, across different tree species and environmental conditions, as reconstructed from stable carbon isotopic measurements across a global network of 103 absolutely dated tree-ring chronologies. The theory predicts optimal χ as a function of air temperature, vapour pressure deficit, ca and atmospheric pressure. The theoretical model predicts 39% of the variance in χ values across sites and years, but underestimates the intersite variability in the reconstructed χ trends, resulting in only 8% of the variance in χ trends across years explained by the model. Overall, our results support theoretical predictions that variations in χ are tightly regulated by the four environmental drivers. They also suggest that explicitly accounting for the effects of plant-available soil water and other site-specific characteristics might improve the predictions. © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158925
Appears in Collections:气候变化与战略

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作者单位: Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL5 7PY, United Kingdom; Department of Physics, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom; Department of Environmental and Forest Biology, SUNY College of Environmental Science and Forestry, Syracuse, NY 13210, United States; Department of Geography, University of Nevada-Reno, 1664 N. Virginia St, Reno, NV 89557, United States; Grantham Institute – Climate Change and the Environment, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom; Department of Environmental Sciences, Utrecht University, Utrecht, 3584 CB, Netherlands; Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, 91191, France; Department of Geography, Swansea University, Swansea, SA2 8PP, United Kingdom; Forest Genetics and Ecophysiology Research Group, Technical University of Madrid, Madrid, 28040, Spain; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland; Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli", Via Vivaldi, Caserta, 81100, Italy; Department of Forest Ecosystems & Society, Oregon State University, Corvallis, OR 97331-5704, United States; USDA Forest Service, Pacific Northwest Research Station, Corvallis, OR 97331-8550, United States; Department of Integrative Biology, University of California – Berkeley, Berkeley, CA 94720-3200, United States; Instituto Pirenaico de Ecología (IPE-CSIC), Zaragoza, E-50192, Spain; Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; Ecoclimatology, Department of Ecology and Ecosystem Management, Technical University of Munich, Freising, 85354, Germany; Division of Biology, Kansas State University, Manhattan, KS 66506, United States; Department of Biology, Southern Oregon University, Ashland, OR 97520, United States; Department of Biological Sciences, Macquarie University, North Ryde, NSW 2109, Australia; Department of Earth System Science, Tsinghua University, Beijing, 100084, China

Recommended Citation:
Lavergne A.,Voelker S.,Csank A.,et al. Historical changes in the stomatal limitation of photosynthesis: empirical support for an optimality principle[J]. New Phytologist,2020-01-01,225(6)
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