Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization
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 ove...
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ftcdlib:oai:escholarship.org/ark:/13030/qt1rx3n2tk 2023-05-15T15:05:04+02:00 Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization Liu, Y Piao, S Gasser, T Ciais, P Yang, H Wang, H Keenan, TF Huang, M Wan, S Song, J Wang, K Janssens, IA Peñuelas, J Huntingford, C Wang, X Altaf Arain, M Fang, Y Fisher, JB Huntzinger, DN Ito, A Jain, AK Mao, J Michalak, AM Peng, C Poulter, B Schwalm, C Shi, X Tian, H Wei, Y Zeng, N Zhu, Q Wang, T 809 - 814 2019-10-01 application/pdf https://escholarship.org/uc/item/1rx3n2tk unknown eScholarship, University of California qt1rx3n2tk https://escholarship.org/uc/item/1rx3n2tk public Nature Geoscience, vol 12, iss 10 Meteorology & Atmospheric Sciences article 2019 ftcdlib 2021-06-28T17:07:39Z 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. Article in Journal/Newspaper Arctic University of California: eScholarship Arctic |
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University of California: eScholarship |
op_collection_id |
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language |
unknown |
topic |
Meteorology & Atmospheric Sciences |
spellingShingle |
Meteorology & Atmospheric Sciences Liu, Y Piao, S Gasser, T Ciais, P Yang, H Wang, H Keenan, TF Huang, M Wan, S Song, J Wang, K Janssens, IA Peñuelas, J Huntingford, C Wang, X Altaf Arain, M Fang, Y Fisher, JB Huntzinger, DN Ito, A Jain, AK Mao, J Michalak, AM Peng, C Poulter, B Schwalm, C Shi, X Tian, H Wei, Y Zeng, N Zhu, Q Wang, T Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
topic_facet |
Meteorology & Atmospheric Sciences |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Liu, Y Piao, S Gasser, T Ciais, P Yang, H Wang, H Keenan, TF Huang, M Wan, S Song, J Wang, K Janssens, IA Peñuelas, J Huntingford, C Wang, X Altaf Arain, M Fang, Y Fisher, JB Huntzinger, DN Ito, A Jain, AK Mao, J Michalak, AM Peng, C Poulter, B Schwalm, C Shi, X Tian, H Wei, Y Zeng, N Zhu, Q Wang, T |
author_facet |
Liu, Y Piao, S Gasser, T Ciais, P Yang, H Wang, H Keenan, TF Huang, M Wan, S Song, J Wang, K Janssens, IA Peñuelas, J Huntingford, C Wang, X Altaf Arain, M Fang, Y Fisher, JB Huntzinger, DN Ito, A Jain, AK Mao, J Michalak, AM Peng, C Poulter, B Schwalm, C Shi, X Tian, H Wei, Y Zeng, N Zhu, Q Wang, T |
author_sort |
Liu, Y |
title |
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
title_short |
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
title_full |
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
title_fullStr |
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
title_full_unstemmed |
Field-experiment constraints on the enhancement of the terrestrial carbon sink by CO2 fertilization |
title_sort |
field-experiment constraints on the enhancement of the terrestrial carbon sink by co2 fertilization |
publisher |
eScholarship, University of California |
publishDate |
2019 |
url |
https://escholarship.org/uc/item/1rx3n2tk |
op_coverage |
809 - 814 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Nature Geoscience, vol 12, iss 10 |
op_relation |
qt1rx3n2tk https://escholarship.org/uc/item/1rx3n2tk |
op_rights |
public |
_version_ |
1766336822946824192 |