Climate change increases carbon allocation to leaves in early leaf green-up

Fandong Meng; Songbai Hong; Jiawei Wang; Anping Chen; Yao Zhang; Yichen Zhang; Ivan A. Janssens; Jiafu Mao; Ranga B. Myneni; Josep Peñuelas; Shilong Piao

doi:10.1111/ele.14205

Climate change increases carbon allocation to leaves in early leaf green-up

Fandong Meng, Songbai Hong, Jiawei Wang, Anping Chen, Yao Zhang, Yichen Zhang, Ivan A. Janssens, Jiafu Mao, Ranga B. Myneni, Josep Peñuelas, Shilong Piao

Earth Systems Modeling

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Global greening, characterized by an increase in leaf area index (LAI), implies an increase in foliar carbon (C). Whether this increase in foliar C under climate change is due to higher photosynthesis or to higher allocation of C to leaves remains unknown. Here, we explored the trends in foliar C accumulation and allocation during leaf green-up from 2000 to 2017 using satellite-derived LAI and solar-induced chlorophyll fluorescence (SIF) across the Northern Hemisphere. The accumulation of foliar C accelerated in the early green-up period due to both increased photosynthesis and higher foliar C allocation driven by climate change. In the late stage of green-up, however, we detected decreasing trends in foliar C accumulation and foliar C allocation. Such stage-dependent trends in the accumulation and allocation of foliar C are not represented in current terrestrial biosphere models. Our results highlight that a better representation of C allocation should be incorporated into models.

Original language	English
Pages (from-to)	816-826
Number of pages	11
Journal	Ecology Letters
Volume	26
Issue number	5
DOIs	https://doi.org/10.1111/ele.14205
State	Published - May 2023

Funding

This study was supported by the National Natural Science Foundation of China (41988101), the Second Tibetan Plateau Scientific Expedition and Research (STEP) program (grant no. 2019QZKK0405). A.C. was supported by an Oak Ridge National Lab subcontract (4000167205). J. Mao was supported by the Terrestrial Ecosystem Science Scientific Focus Area (TES SFA) project funded by the US Department of Energy, Office of Science, Office of Biological and Environmental Research. Oak Ridge National Laboratory is supported by the Office of Science of the US Department of Energy under Contract No. DE‐AC05‐00OR22725.

Funders	Funder number
Oak Ridge National Lab subcontract	4000167205
U.S. Department of Energy
Office of Science
Biological and Environmental Research	DE‐AC05‐00OR22725
National Natural Science Foundation of China	41988101, 2019QZKK0405

Keywords

allocation ratio
foliar carbon allocation
northern ecosystem
optimal partitioning theory
terrestrial biosphere models

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10.1111/ele.14205

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title = "Climate change increases carbon allocation to leaves in early leaf green-up",

abstract = "Global greening, characterized by an increase in leaf area index (LAI), implies an increase in foliar carbon (C). Whether this increase in foliar C under climate change is due to higher photosynthesis or to higher allocation of C to leaves remains unknown. Here, we explored the trends in foliar C accumulation and allocation during leaf green-up from 2000 to 2017 using satellite-derived LAI and solar-induced chlorophyll fluorescence (SIF) across the Northern Hemisphere. The accumulation of foliar C accelerated in the early green-up period due to both increased photosynthesis and higher foliar C allocation driven by climate change. In the late stage of green-up, however, we detected decreasing trends in foliar C accumulation and foliar C allocation. Such stage-dependent trends in the accumulation and allocation of foliar C are not represented in current terrestrial biosphere models. Our results highlight that a better representation of C allocation should be incorporated into models.",

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author = "Fandong Meng and Songbai Hong and Jiawei Wang and Anping Chen and Yao Zhang and Yichen Zhang and Janssens, {Ivan A.} and Jiafu Mao and Myneni, {Ranga B.} and Josep Pe{\~n}uelas and Shilong Piao",

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AU - Meng, Fandong

AU - Hong, Songbai

AU - Wang, Jiawei

AU - Chen, Anping

AU - Zhang, Yao

AU - Zhang, Yichen

AU - Janssens, Ivan A.

AU - Mao, Jiafu

AU - Myneni, Ranga B.

AU - Peñuelas, Josep

AU - Piao, Shilong

PY - 2023/5

Y1 - 2023/5

N2 - Global greening, characterized by an increase in leaf area index (LAI), implies an increase in foliar carbon (C). Whether this increase in foliar C under climate change is due to higher photosynthesis or to higher allocation of C to leaves remains unknown. Here, we explored the trends in foliar C accumulation and allocation during leaf green-up from 2000 to 2017 using satellite-derived LAI and solar-induced chlorophyll fluorescence (SIF) across the Northern Hemisphere. The accumulation of foliar C accelerated in the early green-up period due to both increased photosynthesis and higher foliar C allocation driven by climate change. In the late stage of green-up, however, we detected decreasing trends in foliar C accumulation and foliar C allocation. Such stage-dependent trends in the accumulation and allocation of foliar C are not represented in current terrestrial biosphere models. Our results highlight that a better representation of C allocation should be incorporated into models.

AB - Global greening, characterized by an increase in leaf area index (LAI), implies an increase in foliar carbon (C). Whether this increase in foliar C under climate change is due to higher photosynthesis or to higher allocation of C to leaves remains unknown. Here, we explored the trends in foliar C accumulation and allocation during leaf green-up from 2000 to 2017 using satellite-derived LAI and solar-induced chlorophyll fluorescence (SIF) across the Northern Hemisphere. The accumulation of foliar C accelerated in the early green-up period due to both increased photosynthesis and higher foliar C allocation driven by climate change. In the late stage of green-up, however, we detected decreasing trends in foliar C accumulation and foliar C allocation. Such stage-dependent trends in the accumulation and allocation of foliar C are not represented in current terrestrial biosphere models. Our results highlight that a better representation of C allocation should be incorporated into models.

KW - allocation ratio

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Climate change increases carbon allocation to leaves in early leaf green-up

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