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The dominant role of semi-arid ecosystems in the trend and variability of the land CO 2 sink

Open access
Ahlström, Anders, Raupach, Michael R., Schurgers, Guy, Smith, Benjamin, Arneth, Almut, Jung, Martin, Reichstein, Markus, Canadell, Josep G., Friedlingstein, Pierre, Jain, Atul K., Kato, Etsushi, Poulter, Benjamin, Sitch, Stephen, Stocker, Benjamin D., Viovy, Nicolas, Wang, Ying Ping, Wiltshire, Andy, Zaehle, Sönke, Zeng, Ning·2015·Science

Abstract

The difference is found at the margins: The terrestrial biosphere absorbs about a quarter of all anthropogenic carbon dioxide emissions, but the amount that they take up varies from year to year. Why? Combining models and observations, Ahlström et al. found that marginal ecosystems—semiarid savannas and low-latitude shrublands—are responsible for most of the variability. Biological productivity in these semiarid regions is water-limited and strongly associated with variations in precipitation, unlike wetter tropical areas. Understanding carbon uptake by these marginal lands may help to improve predictions of variations in the global carbon cycle. Science , this issue p. 895

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Metadata

Authors
Ahlström, A., Raupach, M. R., Schurgers, G., Smith, B., Arneth, A., Jung, M., Reichstein, M., Canadell, J. G., Friedlingstein, P., Jain, A. K., Kato, E., Poulter, B., Sitch, S., Stocker, B. D., Viovy, N., Wang, Y. P., Wiltshire, A., Zaehle, S., & Zeng, N.
Venue
Science
Published
2015-05-22
Volume
348
Issue
6237
Pages
895-899
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1930021590
Cited by
1,471
References
6
FWCI
74.96
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The dominant role of semi-arid ecosystems in the trend and variability of the land CO 2 sink. https://app.cochat.ai/papers/10.1126/science.aaa1668
The paper
Ahlström, A., Raupach, M. R., Schurgers, G., Smith, B., Arneth, A., Jung, M., Reichstein, M., Canadell, J. G., Friedlingstein, P., Jain, A. K., Kato, E., Poulter, B., Sitch, S., Stocker, B. D., Viovy, N., Wang, Y. P., Wiltshire, A., Zaehle, S., & Zeng, N. (2015). The dominant role of semi-arid ecosystems in the trend and variability of the land CO 2 sink. Science. https://doi.org/10.1126/science.aaa1668

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.