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Title: Towards a universal model for carbon dioxide uptake by plants

Journal Article · · Nature Plants (Online)
ORCiD logo [1];  [2]; ORCiD logo [3];  [4]; ORCiD logo [5];  [6];  [7]; ORCiD logo [8]
  1. Northwest A & F University, Yangling (China). State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry; Macquarie University, North Ryde (Australia). Department of Biological Sciences; International Institute for Applied Systems Analysis, Laxenburg (Australia). Ecosystems Services and Management Program
  2. Northwest A & F University, Yangling (China). State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry; Macquarie University, North Ryde (Australia). Department of Biological Sciences; Imperial College, London (United Kingdom). AXA Chair of Biosphere and Climate Impacts, Department of Life Sciences
  3. Macquarie University, North Ryde (Australia). Department of Biological Sciences; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate and Ecosystem Sciences Division
  4. Imperial College, London (United Kingdom). AXA Chair of Biosphere and Climate Impacts, Department of Life Sciences; United States Department of Agriculture-Agricultural Research Service, Robert W. Holley Center for Agriculture and Health, Ithaca, NY (United States)
  5. Macquarie University, North Ryde (Australia). Department of Biological Sciences
  6. The University of New South Wales, Randwick (Australia). Ecology and Evolution Research Centre, School of Biological, Earth and Environmental Sciences
  7. Macquarie University, North Ryde (Australia). Department of Biological Sciences; Univ. of Sydney, NSW (Australia). Faculty of Agriculture and Environment, Department of Environmental Sciences
  8. Northwest A & F University, Yangling (China). State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry; Institute of Environmental Sciences, University of Quebec at Montreal, Quebec (Canada). Department of Biological Sciences

Gross primary production (GPP) - the uptake of carbon dioxide (CO2) by leaves, and its conversion to sugars by photosynthesis - is the basis for life on land. Earth System Models (ESMs) incorporating the interactions of land ecosystems and climate are used to predict the future of the terrestrial sink for anthropogenic CO2. ESMs require accurate representation of GPP. However, current ESMs disagree on how GPP responds to environmental variations, suggesting a need for a more robust theoretical framework for modelling. Here in this work, we focus on a key quantity for GPP, the ratio of leaf internal to external CO2 (χ). χ is tightly regulated and depends on environmental conditions, but is represented empirically and incompletely in today's models. We show that a simple evolutionary optimality hypothesis predicts specific quantitative dependencies of χ on temperature, vapour pressure deficit and elevation; and that these same dependencies emerge from an independent analysis of empirical χ values, derived from a worldwide dataset of >3,500 leaf stable carbon isotope measurements. A single global equation embodying these relationships then unifies the empirical light-use efficiency model with the standard model of C3 photosynthesis, and successfully predicts GPP measured at eddy-covariance flux sites. This success is notable given the equation's simplicity and broad applicability across biomes and plant functional types. Finally, it provides a theoretical underpinning for the analysis of plant functional coordination across species and emergent properties of ecosystems, and a potential basis for the reformulation of the controls of GPP in next-generation ESMs.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1437966
Journal Information:
Nature Plants (Online), Vol. 3, Issue 9; Related Information: © 2017 The Author(s).; ISSN 2055-0278
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 174 works
Citation information provided by
Web of Science

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Cited By (36)

Drivers of leaf carbon exchange capacity across biomes at the continental scale journal June 2018
Partitioning Eddy Covariance Water Flux Components Using Physiological and Micrometeorological Approaches journal October 2018
Robust leaf trait relationships across species under global environmental changes journal June 2020
Latitudinal limits to the predicted increase of the peatland carbon sink with warming journal September 2018
Increased water-use efficiency and reduced CO2 uptake by plants during droughts at a continental scale journal August 2018
Drought impacts on terrestrial primary production underestimated by satellite monitoring journal March 2019
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization journal September 2019
Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency journal August 2019
Tree-ring isotopes suggest atmospheric drying limits temperature–growth responses of treeline bristlecone pine journal May 2019
The impact of the 2015/2016 El Niño on global photosynthesis using satellite remote sensing journal October 2018
An extensive suite of functional traits distinguishes Hawaiian wet and dry forests and enables prediction of species vital rates journal December 2018
Global photosynthetic capacity is optimized to the environment journal January 2019
Modelled net carbon gain responses to climate change in boreal trees: Impacts of photosynthetic parameter selection and acclimation journal December 2018
Climate and plant trait strategies determine tree carbon allocation to leaves and mediate future forest productivity journal June 2019
Higher than expected CO 2 fertilization inferred from leaf to global observations journal February 2020
Climate and soils together regulate photosynthetic carbon isotope discrimination within C 3 plants worldwide : XXXX journal September 2018
Different determinants of radiation use efficiency in cold and temperate forests journal July 2019
Modelling carbon sources and sinks in terrestrial vegetation journal September 2018
The validity of optimal leaf traits modelled on environmental conditions journal October 2018
Improving plant allometry by fusing forest models and remote sensing journal April 2019
Historical changes in the stomatal limitation of photosynthesis: empirical support for an optimality principle journal December 2019
Water transport through tall trees: A vertically explicit, analytical model of xylem hydraulic conductance in stems: Vertically explicit, analytical hydraulic model journal June 2018
Gas exchange and water‐use efficiency in plant canopies journal December 2018
Rising CO 2 drives divergence in water use efficiency of evergreen and deciduous plants journal December 2019
Plant functional diversity affects climate–vegetation interaction journal January 2018
A new version of the CABLE land surface model (Subversion revision r4601) incorporating land use and land cover change, woody vegetation demography, and a novel optimisation-based approach to plant coordination of photosynthesis journal January 2018
Assessing the generality of global leaf trait relationships journal February 2005
Plant functional diversity affects climate–vegetation interaction posted_content November 2017
P-model v1.0: an optimality-based light use efficiency model for simulating ecosystem gross primary production journal January 2020
Climate and soils together regulate photosynthetic carbon isotope discrimination within C3 plants worldwide text January 2018
Latitudinal limits to the predicted increase of the peatland carbon sink with warming text January 2018
Drought impacts on terrestrial primary production underestimated by satellite monitoring text January 2019
Robust leaf trait relationships across species under global environmental changes text January 2020
Tree-ring isotopes suggest atmospheric drying limits temperature–growth responses of treeline bristlecone pine journal May 2019
Global photosynthetic capacity is optimized to the environment journal January 2019
Rising CO 2 drives divergence in water use efficiency of evergreen and deciduous plants journal December 2019