Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization
Yongwen Liu, Shilong Piao, Thomas Gasser, Philippe Ciais, Hui Yang, Han Wang, Trevor F. Keenan, Mengtian Huang, Shiqiang Wan, Jian Song, Kai Wang, Ivan A. Janssens, Josep Peñuelas, Chris Huntingford, Xuhui Wang, M. Altaf Arain, Yuanyuan Fang, Joshua B. Fisher, Maoyi Huang, D. N. Huntzinger, Akihiko Ito, Atul K. Jain, Jiafu Mao, A. M. Michalak, Changhui Peng, Benjamin Poulter, Christopher R. Schwalm, Xiaoying Shi, Hanqin Tian, Yaxing Wei, Ning Zeng, Qiuan Zhu, Tao Wang
Abstract
Clarifying how increased atmospheric CO2 concentration (eCO2) contributes to accelerated land carbon sequestration remains important since this process is the largest negative feedback in the coupled carbon–climate system. Here, we constrain the sensitivity of the terrestrial carbon sink to eCO2 over the temperate Northern Hemisphere for the past five decades, using 12 terrestrial ecosystem models and data from seven CO2 enrichment experiments. This constraint uses the heuristic finding that the northern temperate carbon sink sensitivity to eCO2 is linearly related to the site-scale sensitivity across the models. The emerging data-constrained eCO2 sensitivity is 0.64 ± 0.28 PgC yr−1 per hundred ppm of eCO2. Extrapolating worldwide, this northern temperate sensitivity projects the global terrestrial carbon sink to increase by 3.5 ± 1.9 PgC yr−1 for an increase in CO2 of 100 ppm. This value suggests that CO2 fertilization alone explains most of the observed increase in global land carbon sink since the 1960s. More CO2 enrichment experiments, particularly in boreal, arctic and tropical ecosystems, are required to explain further the responsible processes. The northern temperate carbon sink is estimated to increase by 0.64 PgC each year for each increase in atmospheric CO2 concentrations by 100 ppm, suggests an analysis of data from field experiments at 7 sites constraints.- Cite:
- Yongwen Liu, Shilong Piao, Thomas Gasser, Philippe Ciais, Hui Yang, Han Wang, Trevor F. Keenan, Mengtian Huang, Shiqiang Wan, Jian Song, Kai Wang, Ivan A. Janssens, Josep Peñuelas, Chris Huntingford, Xuhui Wang, M. Altaf Arain, Yuanyuan Fang, Joshua B. Fisher, Maoyi Huang, et al.. 2019. Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization. Nature Geoscience, Volume 12, Issue 10, 12(10):809–814.
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@article{Liu-2019-Field-experiment,
title = "Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization",
author = "Liu, Yongwen and
Piao, Shilong and
Gasser, Thomas and
Ciais, Philippe and
Yang, Hui and
Wang, Han and
Keenan, Trevor F. and
Huang, Mengtian and
Wan, Shiqiang and
Song, Jian and
Wang, Kai and
Janssens, Ivan A. and
Pe{\~n}uelas, Josep and
Huntingford, Chris and
Wang, Xuhui and
Arain, M. Altaf and
Fang, Yuanyuan and
Fisher, Joshua B. and
Huang, Maoyi and
Huntzinger, D. N. and
Ito, Akihiko and
Jain, Atul K. and
Mao, Jiafu and
Michalak, A. M. and
Peng, Changhui and
Poulter, Benjamin and
Schwalm, Christopher R. and
Shi, Xiaoying and
Tian, Hanqin and
Wei, Yaxing and
Zeng, Ning and
Zhu, Qiuan and
Wang, Tao",
journal = "Nature Geoscience, Volume 12, Issue 10",
volume = "12",
number = "10",
year = "2019",
publisher = "Springer Science and Business Media LLC",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G19-99001",
doi = "10.1038/s41561-019-0436-1",
pages = "809--814",
abstract = "Clarifying how increased atmospheric CO2 concentration (eCO2) contributes to accelerated land carbon sequestration remains important since this process is the largest negative feedback in the coupled carbon{--}climate system. Here, we constrain the sensitivity of the terrestrial carbon sink to eCO2 over the temperate Northern Hemisphere for the past five decades, using 12 terrestrial ecosystem models and data from seven CO2 enrichment experiments. This constraint uses the heuristic finding that the northern temperate carbon sink sensitivity to eCO2 is linearly related to the site-scale sensitivity across the models. The emerging data-constrained eCO2 sensitivity is 0.64 {\mbox{$\pm$}} 0.28 PgC yr−1 per hundred ppm of eCO2. Extrapolating worldwide, this northern temperate sensitivity projects the global terrestrial carbon sink to increase by 3.5 {\mbox{$\pm$}} 1.9 PgC yr−1 for an increase in CO2 of 100 ppm. This value suggests that CO2 fertilization alone explains most of the observed increase in global land carbon sink since the 1960s. More CO2 enrichment experiments, particularly in boreal, arctic and tropical ecosystems, are required to explain further the responsible processes. The northern temperate carbon sink is estimated to increase by 0.64 PgC each year for each increase in atmospheric CO2 concentrations by 100 ppm, suggests an analysis of data from field experiments at 7 sites constraints.",
}
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<abstract>Clarifying how increased atmospheric CO2 concentration (eCO2) contributes to accelerated land carbon sequestration remains important since this process is the largest negative feedback in the coupled carbon–climate system. Here, we constrain the sensitivity of the terrestrial carbon sink to eCO2 over the temperate Northern Hemisphere for the past five decades, using 12 terrestrial ecosystem models and data from seven CO2 enrichment experiments. This constraint uses the heuristic finding that the northern temperate carbon sink sensitivity to eCO2 is linearly related to the site-scale sensitivity across the models. The emerging data-constrained eCO2 sensitivity is 0.64 \pm 0.28 PgC yr−1 per hundred ppm of eCO2. Extrapolating worldwide, this northern temperate sensitivity projects the global terrestrial carbon sink to increase by 3.5 \pm 1.9 PgC yr−1 for an increase in CO2 of 100 ppm. This value suggests that CO2 fertilization alone explains most of the observed increase in global land carbon sink since the 1960s. More CO2 enrichment experiments, particularly in boreal, arctic and tropical ecosystems, are required to explain further the responsible processes. The northern temperate carbon sink is estimated to increase by 0.64 PgC each year for each increase in atmospheric CO2 concentrations by 100 ppm, suggests an analysis of data from field experiments at 7 sites constraints.</abstract>
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%0 Journal Article %T Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization %A Liu, Yongwen %A Piao, Shilong %A Gasser, Thomas %A Ciais, Philippe %A Yang, Hui %A Wang, Han %A Keenan, Trevor F. %A Huang, Mengtian %A Wan, Shiqiang %A Song, Jian %A Wang, Kai %A Janssens, Ivan A. %A Peñuelas, Josep %A Huntingford, Chris %A Wang, Xuhui %A Arain, M. Altaf %A Fang, Yuanyuan %A Fisher, Joshua B. %A Huang, Maoyi %A Huntzinger, D. N. %A Ito, Akihiko %A Jain, Atul K. %A Mao, Jiafu %A Michalak, A. M. %A Peng, Changhui %A Poulter, Benjamin %A Schwalm, Christopher R. %A Shi, Xiaoying %A Tian, Hanqin %A Wei, Yaxing %A Zeng, Ning %A Zhu, Qiuan %A Wang, Tao %J Nature Geoscience, Volume 12, Issue 10 %D 2019 %V 12 %N 10 %I Springer Science and Business Media LLC %F Liu-2019-Field-experiment %X Clarifying how increased atmospheric CO2 concentration (eCO2) contributes to accelerated land carbon sequestration remains important since this process is the largest negative feedback in the coupled carbon–climate system. Here, we constrain the sensitivity of the terrestrial carbon sink to eCO2 over the temperate Northern Hemisphere for the past five decades, using 12 terrestrial ecosystem models and data from seven CO2 enrichment experiments. This constraint uses the heuristic finding that the northern temperate carbon sink sensitivity to eCO2 is linearly related to the site-scale sensitivity across the models. The emerging data-constrained eCO2 sensitivity is 0.64 \pm 0.28 PgC yr−1 per hundred ppm of eCO2. Extrapolating worldwide, this northern temperate sensitivity projects the global terrestrial carbon sink to increase by 3.5 \pm 1.9 PgC yr−1 for an increase in CO2 of 100 ppm. This value suggests that CO2 fertilization alone explains most of the observed increase in global land carbon sink since the 1960s. More CO2 enrichment experiments, particularly in boreal, arctic and tropical ecosystems, are required to explain further the responsible processes. The northern temperate carbon sink is estimated to increase by 0.64 PgC each year for each increase in atmospheric CO2 concentrations by 100 ppm, suggests an analysis of data from field experiments at 7 sites constraints. %R 10.1038/s41561-019-0436-1 %U https://gwf-uwaterloo.github.io/gwf-publications/G19-99001 %U https://doi.org/10.1038/s41561-019-0436-1 %P 809-814
Markdown (Informal)
[Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization](https://gwf-uwaterloo.github.io/gwf-publications/G19-99001) (Liu et al., GWF 2019)
- Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization (Liu et al., GWF 2019)
ACL
- Yongwen Liu, Shilong Piao, Thomas Gasser, Philippe Ciais, Hui Yang, Han Wang, Trevor F. Keenan, Mengtian Huang, Shiqiang Wan, Jian Song, Kai Wang, Ivan A. Janssens, Josep Peñuelas, Chris Huntingford, Xuhui Wang, M. Altaf Arain, Yuanyuan Fang, Joshua B. Fisher, Maoyi Huang, et al.. 2019. Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization. Nature Geoscience, Volume 12, Issue 10, 12(10):809–814.