---
res:
  bibo_abstract:
  - Terrestrial ecosystems have been serving as a strong carbon sink that offsets
    one-quarter of anthropogenic CO2 emissions. Carbon use efficiency (CUE), the percentage
    of photosynthesized carbon that is available for biomass production and other
    secondary carbon products, is one factor determining the carbon sink size. The
    global variation in CUE remains unclear, however, as recent reports disagree over
    the responses of CUE to temperature, dryness, forest types and stand age, and
    there are limited direct observations to constrain the related uncertainty. Here,
    we propose to infer CUE from spatially distributed observations of land–atmosphere
    CO2 exchange from global eddy covariance sites based on the degree of ecosystem
    respiration–photosynthesis coupling. Across 2,737 site-years, CUE derived from
    eddy covariance observations is 0.43 ± 0.12, consistent with previous inventory-based
    estimates (0.47 ± 0.12, n = 301) but with a better representation of spatial–temporal
    variation in CUE. We find that CUE consistently decreases with temperature, precipitation,
    light availability and stand age, with a substantial difference in the baseline
    CUE among biomes. Importantly, CUE of deciduous forests is typically 15% higher
    than that of evergreen forests, suggesting that over the long-term deciduous forests
    are more efficient in using photosynthate. Our study advances the understanding
    of the global variation in CUE and provides insights to guide best practices of
    forest conservation, management and restoration for carbon sequestration.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Xiangzhong
      foaf_name: Luo, Xiangzhong
      foaf_surname: Luo
  - foaf_Person:
      foaf_givenName: Ruiying
      foaf_name: Zhao, Ruiying
      foaf_surname: Zhao
  - foaf_Person:
      foaf_givenName: Housen
      foaf_name: Chu, Housen
      foaf_surname: Chu
  - foaf_Person:
      foaf_givenName: Alessio
      foaf_name: Collalti, Alessio
      foaf_surname: Collalti
  - foaf_Person:
      foaf_givenName: Simone
      foaf_name: Fatichi, Simone
      foaf_surname: Fatichi
      foaf_workInfoHomepage: http://www.librecat.org/personId=cf8e546b-a9b0-11f0-a43b-aa89ed1b56d6
  - foaf_Person:
      foaf_givenName: Trevor F.
      foaf_name: Keenan, Trevor F.
      foaf_surname: Keenan
  - foaf_Person:
      foaf_givenName: Xinchen
      foaf_name: Lu, Xinchen
      foaf_surname: Lu
  - foaf_Person:
      foaf_givenName: Ngoc
      foaf_name: Nguyen, Ngoc
      foaf_surname: Nguyen
  - foaf_Person:
      foaf_givenName: I. Colin
      foaf_name: Prentice, I. Colin
      foaf_surname: Prentice
  - foaf_Person:
      foaf_givenName: Wu
      foaf_name: Sun, Wu
      foaf_surname: Sun
  - foaf_Person:
      foaf_givenName: Kailiang
      foaf_name: Yu, Kailiang
      foaf_surname: Yu
  - foaf_Person:
      foaf_givenName: Liyao
      foaf_name: Yu, Liyao
      foaf_surname: Yu
  bibo_doi: 10.1038/s41559-025-02753-0
  bibo_volume: 9
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2397-334X
  dct_language: eng
  dct_publisher: Springer Science and Business Media LLC@
  dct_title: Global variation in vegetation carbon use efficiency inferred from eddy
    covariance observations@
  fabio_hasPubmedId: '40537545'
...