Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use
CO₂ emissions from preindustrial land-use change (LUC) are subject to large uncertainties. Although atmospheric CO₂ records suggest only a small land carbon (C) source since 5,000 y before present (5 kyBP), the concurrent C sink by peat buildup could mask large early LUC emissions. Here, we combine...
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ftunivbern:oai:boris.unibe.ch:97632 2023-08-20T04:07:12+02:00 Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use Stocker, Benjamin David Yu, Zicheng Massa, Charly Joos, Fortunat 2017 application/pdf https://boris.unibe.ch/97632/1/PNAS-2017-Stocker-1492-7.pdf https://boris.unibe.ch/97632/ http://www.pnas.org/content/114/7/1492.abstract eng eng National Academy of Sciences NAS https://boris.unibe.ch/97632/ info:eu-repo/semantics/restrictedAccess Stocker, Benjamin David; Yu, Zicheng; Massa, Charly; Joos, Fortunat (2017). Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use. Proceedings of the National Academy of Sciences of the United States of America - PNAS, 114(7), pp. 1492-1497. National Academy of Sciences NAS 10.1073/pnas.1613889114 <http://dx.doi.org/10.1073/pnas.1613889114> 530 Physics 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2017 ftunivbern https://doi.org/10.1073/pnas.1613889114 2023-07-31T21:34:33Z CO₂ emissions from preindustrial land-use change (LUC) are subject to large uncertainties. Although atmospheric CO₂ records suggest only a small land carbon (C) source since 5,000 y before present (5 kyBP), the concurrent C sink by peat buildup could mask large early LUC emissions. Here, we combine updated continuous peat C reconstructions with the land C balance inferred from double deconvolution analyses of atmospheric CO₂ and δ¹³C at different temporal scales to investigate the terrestrial C budget of the Holocene and the last millennium and constrain LUC emissions. LUC emissions are estimated with transient model simulations for diverging published scenarios of LU area change and shifting cultivation. Our results reveal a large terrestrial nonpeatland C source after the Mid-Holocene (66 + 25 PgC at 7-5 kyBP and 115 + 27 PgC at 5-3 kyBP). Despite high simulated per-capita CO₂ emissions from LUC in early phases of agricultural development, humans emerge as a driver with dominant global C cycle impacts only in the most recent three millennia. Sole anthropogenic causes for particular variations in the CO₂ record (~20 ppm rise after 7 kyBP and ~10 ppm fall between 1500 CE and 1600 CE) are not supported. This analysis puts a strong constraint on preindustrial vs. industrial-era LUC emissions and suggests that upper-end scenarios for the extent of agricultural expansion before 1850 CE are not compatible with the C budget thereafter. Article in Journal/Newspaper ice core BORIS (Bern Open Repository and Information System, University of Bern) Proceedings of the National Academy of Sciences 114 7 1492 1497 |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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language |
English |
topic |
530 Physics 550 Earth sciences & geology |
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530 Physics 550 Earth sciences & geology Stocker, Benjamin David Yu, Zicheng Massa, Charly Joos, Fortunat Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
topic_facet |
530 Physics 550 Earth sciences & geology |
description |
CO₂ emissions from preindustrial land-use change (LUC) are subject to large uncertainties. Although atmospheric CO₂ records suggest only a small land carbon (C) source since 5,000 y before present (5 kyBP), the concurrent C sink by peat buildup could mask large early LUC emissions. Here, we combine updated continuous peat C reconstructions with the land C balance inferred from double deconvolution analyses of atmospheric CO₂ and δ¹³C at different temporal scales to investigate the terrestrial C budget of the Holocene and the last millennium and constrain LUC emissions. LUC emissions are estimated with transient model simulations for diverging published scenarios of LU area change and shifting cultivation. Our results reveal a large terrestrial nonpeatland C source after the Mid-Holocene (66 + 25 PgC at 7-5 kyBP and 115 + 27 PgC at 5-3 kyBP). Despite high simulated per-capita CO₂ emissions from LUC in early phases of agricultural development, humans emerge as a driver with dominant global C cycle impacts only in the most recent three millennia. Sole anthropogenic causes for particular variations in the CO₂ record (~20 ppm rise after 7 kyBP and ~10 ppm fall between 1500 CE and 1600 CE) are not supported. This analysis puts a strong constraint on preindustrial vs. industrial-era LUC emissions and suggests that upper-end scenarios for the extent of agricultural expansion before 1850 CE are not compatible with the C budget thereafter. |
format |
Article in Journal/Newspaper |
author |
Stocker, Benjamin David Yu, Zicheng Massa, Charly Joos, Fortunat |
author_facet |
Stocker, Benjamin David Yu, Zicheng Massa, Charly Joos, Fortunat |
author_sort |
Stocker, Benjamin David |
title |
Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
title_short |
Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
title_full |
Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
title_fullStr |
Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
title_full_unstemmed |
Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use |
title_sort |
holocene peatland and ice-core data constraints on the timing and magnitude of co₂ emissions from past land use |
publisher |
National Academy of Sciences NAS |
publishDate |
2017 |
url |
https://boris.unibe.ch/97632/1/PNAS-2017-Stocker-1492-7.pdf https://boris.unibe.ch/97632/ http://www.pnas.org/content/114/7/1492.abstract |
genre |
ice core |
genre_facet |
ice core |
op_source |
Stocker, Benjamin David; Yu, Zicheng; Massa, Charly; Joos, Fortunat (2017). Holocene peatland and ice-core data constraints on the timing and magnitude of CO₂ emissions from past land use. Proceedings of the National Academy of Sciences of the United States of America - PNAS, 114(7), pp. 1492-1497. National Academy of Sciences NAS 10.1073/pnas.1613889114 <http://dx.doi.org/10.1073/pnas.1613889114> |
op_relation |
https://boris.unibe.ch/97632/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1073/pnas.1613889114 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
114 |
container_issue |
7 |
container_start_page |
1492 |
op_container_end_page |
1497 |
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1774718681114214400 |