Alaska Peatland Map (2019-2021)
Peatlands cover 3% of the global land surface, yet store 25% of the world’s soil organic carbon. These organic-rich soils are widespread across permafrost regions, representing nearly 18% of land surface and storing between 500 and 600 petagrams of carbon (PgC). Peat (i.e., partially decomposed thic...
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Arctic Data Center
2023
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Online Access: | https://doi.org/10.18739/A2NK3667M |
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dataone:doi:10.18739/A2NK3667M 2024-06-03T18:46:41+00:00 Alaska Peatland Map (2019-2021) Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma Hall Caroline Ludden Aiden Schore Umakant Mishra Sarah Scott Alaska ENVELOPE(-170.0,-141.0,70.0,59.0) BEGINDATE: 2019-01-01T00:00:00Z ENDDATE: 2021-01-01T00:00:00Z 2023-01-01T00:00:00Z https://doi.org/10.18739/A2NK3667M unknown Arctic Data Center peatlands organic soil soil horizon alaska carbon fire histosols Dataset 2023 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2NK3667M 2024-06-03T18:20:17Z Peatlands cover 3% of the global land surface, yet store 25% of the world’s soil organic carbon. These organic-rich soils are widespread across permafrost regions, representing nearly 18% of land surface and storing between 500 and 600 petagrams of carbon (PgC). Peat (i.e., partially decomposed thick organic layers) accumulates due to the imbalance between plant production and decomposition often within saturated, nutrient deficient, and acidic soils, which limit decomposition. As warmer and drier conditions become more prevalent across northern ecosystems, the vulnerability of peatland soils may increase with the susceptibility of peat-fire ignitions, yet the distribution of peatlands across Alaska remains uncertain. Here we develop a new high-resolution (20 meter (m) resolution) wall-to-wall ~1.5 million square kilometer (km2) peatland map of Alaska, using a combination of Sentinel-1 (Dual-polarized Synthetic Aperture Radar), Sentinel-2 (Multi-Spectral Imager), and derivatives from the Arctic Digital Elevation Model (ArcticDEM). Machine learning classifiers were trained and tested using peat cores, ground observations, and sub-meter resolution image interpretation, which was spatially constrained by a peatland suitability model that described the extent of terrain suitable for peat accumulation. This product identifies peatlands in Polar, Boreal, and Maritime ecoregions in Alaska to cover 26,842 (4.6%), 69,783 (10.4%), and 13,506 (5.3%) km2, respectively. Dataset Arctic permafrost Alaska Arctic Data Center (via DataONE) Arctic ENVELOPE(-170.0,-141.0,70.0,59.0) |
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Open Polar |
collection |
Arctic Data Center (via DataONE) |
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dataone:urn:node:ARCTIC |
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unknown |
topic |
peatlands organic soil soil horizon alaska carbon fire histosols |
spellingShingle |
peatlands organic soil soil horizon alaska carbon fire histosols Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma Hall Caroline Ludden Aiden Schore Umakant Mishra Sarah Scott Alaska Peatland Map (2019-2021) |
topic_facet |
peatlands organic soil soil horizon alaska carbon fire histosols |
description |
Peatlands cover 3% of the global land surface, yet store 25% of the world’s soil organic carbon. These organic-rich soils are widespread across permafrost regions, representing nearly 18% of land surface and storing between 500 and 600 petagrams of carbon (PgC). Peat (i.e., partially decomposed thick organic layers) accumulates due to the imbalance between plant production and decomposition often within saturated, nutrient deficient, and acidic soils, which limit decomposition. As warmer and drier conditions become more prevalent across northern ecosystems, the vulnerability of peatland soils may increase with the susceptibility of peat-fire ignitions, yet the distribution of peatlands across Alaska remains uncertain. Here we develop a new high-resolution (20 meter (m) resolution) wall-to-wall ~1.5 million square kilometer (km2) peatland map of Alaska, using a combination of Sentinel-1 (Dual-polarized Synthetic Aperture Radar), Sentinel-2 (Multi-Spectral Imager), and derivatives from the Arctic Digital Elevation Model (ArcticDEM). Machine learning classifiers were trained and tested using peat cores, ground observations, and sub-meter resolution image interpretation, which was spatially constrained by a peatland suitability model that described the extent of terrain suitable for peat accumulation. This product identifies peatlands in Polar, Boreal, and Maritime ecoregions in Alaska to cover 26,842 (4.6%), 69,783 (10.4%), and 13,506 (5.3%) km2, respectively. |
format |
Dataset |
author |
Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma Hall Caroline Ludden Aiden Schore Umakant Mishra Sarah Scott |
author_facet |
Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma Hall Caroline Ludden Aiden Schore Umakant Mishra Sarah Scott |
author_sort |
Mark J. Lara |
title |
Alaska Peatland Map (2019-2021) |
title_short |
Alaska Peatland Map (2019-2021) |
title_full |
Alaska Peatland Map (2019-2021) |
title_fullStr |
Alaska Peatland Map (2019-2021) |
title_full_unstemmed |
Alaska Peatland Map (2019-2021) |
title_sort |
alaska peatland map (2019-2021) |
publisher |
Arctic Data Center |
publishDate |
2023 |
url |
https://doi.org/10.18739/A2NK3667M |
op_coverage |
Alaska ENVELOPE(-170.0,-141.0,70.0,59.0) BEGINDATE: 2019-01-01T00:00:00Z ENDDATE: 2021-01-01T00:00:00Z |
long_lat |
ENVELOPE(-170.0,-141.0,70.0,59.0) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Alaska |
genre_facet |
Arctic permafrost Alaska |
op_doi |
https://doi.org/10.18739/A2NK3667M |
_version_ |
1800869742409416704 |