Modelling past, present and future peatland carbon accumulation across the pan-Arctic region
Most northern peatlands developed during the Holocene, sequestering large amounts of carbon in terrestrial ecosystems. However, recent syntheses have highlighted the gaps in our understanding of peatland carbon accumulation. Assessments of the long-term carbon accumulation rate and possible warming-...
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ftdoajarticles:oai:doaj.org/article:d4a710d092784f32aec8ac2316ca8a0c 2023-05-15T14:59:58+02:00 Modelling past, present and future peatland carbon accumulation across the pan-Arctic region N. Chaudhary P. A. Miller B. Smith 2017-09-01T00:00:00Z https://doi.org/10.5194/bg-14-4023-2017 https://doaj.org/article/d4a710d092784f32aec8ac2316ca8a0c EN eng Copernicus Publications https://www.biogeosciences.net/14/4023/2017/bg-14-4023-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-4023-2017 1726-4170 1726-4189 https://doaj.org/article/d4a710d092784f32aec8ac2316ca8a0c Biogeosciences, Vol 14, Pp 4023-4044 (2017) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/bg-14-4023-2017 2022-12-31T14:58:14Z Most northern peatlands developed during the Holocene, sequestering large amounts of carbon in terrestrial ecosystems. However, recent syntheses have highlighted the gaps in our understanding of peatland carbon accumulation. Assessments of the long-term carbon accumulation rate and possible warming-driven changes in these accumulation rates can therefore benefit from process-based modelling studies. We employed an individual-based dynamic global ecosystem model with dynamic peatland and permafrost functionalities and patch-based vegetation dynamics to quantify long-term carbon accumulation rates and to assess the effects of historical and projected climate change on peatland carbon balances across the pan-Arctic region. Our results are broadly consistent with published regional and global carbon accumulation estimates. A majority of modelled peatland sites in Scandinavia, Europe, Russia and central and eastern Canada change from carbon sinks through the Holocene to potential carbon sources in the coming century. In contrast, the carbon sink capacity of modelled sites in Siberia, far eastern Russia, Alaska and western and northern Canada was predicted to increase in the coming century. The greatest changes were evident in eastern Siberia, north-western Canada and in Alaska, where peat production hampered by permafrost and low productivity due the cold climate in these regions in the past was simulated to increase greatly due to warming, a wetter climate and higher CO 2 levels by the year 2100. In contrast, our model predicts that sites that are expected to experience reduced precipitation rates and are currently permafrost free will lose more carbon in the future. Article in Journal/Newspaper Arctic Climate change permafrost Alaska Siberia Directory of Open Access Journals: DOAJ Articles Arctic Canada Biogeosciences 14 18 4023 4044 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 N. Chaudhary P. A. Miller B. Smith Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Most northern peatlands developed during the Holocene, sequestering large amounts of carbon in terrestrial ecosystems. However, recent syntheses have highlighted the gaps in our understanding of peatland carbon accumulation. Assessments of the long-term carbon accumulation rate and possible warming-driven changes in these accumulation rates can therefore benefit from process-based modelling studies. We employed an individual-based dynamic global ecosystem model with dynamic peatland and permafrost functionalities and patch-based vegetation dynamics to quantify long-term carbon accumulation rates and to assess the effects of historical and projected climate change on peatland carbon balances across the pan-Arctic region. Our results are broadly consistent with published regional and global carbon accumulation estimates. A majority of modelled peatland sites in Scandinavia, Europe, Russia and central and eastern Canada change from carbon sinks through the Holocene to potential carbon sources in the coming century. In contrast, the carbon sink capacity of modelled sites in Siberia, far eastern Russia, Alaska and western and northern Canada was predicted to increase in the coming century. The greatest changes were evident in eastern Siberia, north-western Canada and in Alaska, where peat production hampered by permafrost and low productivity due the cold climate in these regions in the past was simulated to increase greatly due to warming, a wetter climate and higher CO 2 levels by the year 2100. In contrast, our model predicts that sites that are expected to experience reduced precipitation rates and are currently permafrost free will lose more carbon in the future. |
format |
Article in Journal/Newspaper |
author |
N. Chaudhary P. A. Miller B. Smith |
author_facet |
N. Chaudhary P. A. Miller B. Smith |
author_sort |
N. Chaudhary |
title |
Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
title_short |
Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
title_full |
Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
title_fullStr |
Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
title_full_unstemmed |
Modelling past, present and future peatland carbon accumulation across the pan-Arctic region |
title_sort |
modelling past, present and future peatland carbon accumulation across the pan-arctic region |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/bg-14-4023-2017 https://doaj.org/article/d4a710d092784f32aec8ac2316ca8a0c |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Climate change permafrost Alaska Siberia |
genre_facet |
Arctic Climate change permafrost Alaska Siberia |
op_source |
Biogeosciences, Vol 14, Pp 4023-4044 (2017) |
op_relation |
https://www.biogeosciences.net/14/4023/2017/bg-14-4023-2017.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-14-4023-2017 1726-4170 1726-4189 https://doaj.org/article/d4a710d092784f32aec8ac2316ca8a0c |
op_doi |
https://doi.org/10.5194/bg-14-4023-2017 |
container_title |
Biogeosciences |
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14 |
container_issue |
18 |
container_start_page |
4023 |
op_container_end_page |
4044 |
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