A 20 m spatial resolution peatland extent map of Alaska
Abstract Peatlands are prevalent across northern regions, including bogs, fens, marshes, meadows, and select tundra wetlands that all vary in size (e.g., 0.01 s to 10 s km2) and shape (e.g., circular to elongated). However, our best remotely sensed products describing the regional-scale distribution...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Data |
| Online Access: | https://doi.org/10.1038/s41597-025-04502-1 |
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| author | Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma C. Hall Caroline Ludden Aiden I. G. Schore Umakant Mishra Sarah N. Scott |
| author_facet | Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma C. Hall Caroline Ludden Aiden I. G. Schore Umakant Mishra Sarah N. Scott |
| author_sort | Mark J. Lara |
| collection | DOAJ |
| description | Abstract Peatlands are prevalent across northern regions, including bogs, fens, marshes, meadows, and select tundra wetlands that all vary in size (e.g., 0.01 s to 10 s km2) and shape (e.g., circular to elongated). However, our best remotely sensed products describing the regional-scale distribution of peatland extents are constrained to 1 km2 pixels, often representing notable sub-pixel heterogeneity and local-scale uncertainties. Here we develop a new 20 m spatial resolution wall-to-wall ~1.5 million km2 peatland map of Alaska, using peat cores, ground observations, and sub-meter resolution image interpretation. Ground-data were used to train machine learning classifiers to detect peatlands using a fusion of Sentinel-1 (Dual-polarized Synthetic Aperture Radar), Sentinel-2 (Multi-Spectral Imager), and derivatives from the Arctic Digital Elevation Model (ArcticDEM), that were spatially constrained by a peatland suitability model. Statewide peatland mapping (overall agreement:85%) identified peatlands to cover 4.6, 10.4, and 5.3% of polar, boreal, and maritime ecoregions, respectively, and 7.3% of the total terrestrial land area. This new dataset will improve the representation of peatland carbon, nutrient, and fire dynamics across Alaska. |
| format | Article |
| id | doaj-art-bd6524e57d184955aa8714f1e61f847f |
| institution | Kabale University |
| issn | 2052-4463 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Data |
| spelling | doaj-art-bd6524e57d184955aa8714f1e61f847f2025-02-09T12:11:45ZengNature PortfolioScientific Data2052-44632025-02-0112111310.1038/s41597-025-04502-1A 20 m spatial resolution peatland extent map of AlaskaMark J. Lara0Roger Michaelides1Duncan Anderson2Wenqu Chen3Emma C. Hall4Caroline Ludden5Aiden I. G. Schore6Umakant Mishra7Sarah N. Scott8Department of Plant Biology, University of IllinoisDepartment of Geography, Washington University at Saint LouisDepartment of Geography, University of IllinoisDepartment of Geography, University of IllinoisDepartment of Geography, University of IllinoisDepartment of Plant Biology, University of IllinoisDepartment of Plant Biology, University of IllinoisComputational Bio & Biophysics, Sandia National LaboratoriesThermal/Fluids Science and Engineering, Sandia National LaboratoriesAbstract Peatlands are prevalent across northern regions, including bogs, fens, marshes, meadows, and select tundra wetlands that all vary in size (e.g., 0.01 s to 10 s km2) and shape (e.g., circular to elongated). However, our best remotely sensed products describing the regional-scale distribution of peatland extents are constrained to 1 km2 pixels, often representing notable sub-pixel heterogeneity and local-scale uncertainties. Here we develop a new 20 m spatial resolution wall-to-wall ~1.5 million km2 peatland map of Alaska, using peat cores, ground observations, and sub-meter resolution image interpretation. Ground-data were used to train machine learning classifiers to detect peatlands using a fusion of Sentinel-1 (Dual-polarized Synthetic Aperture Radar), Sentinel-2 (Multi-Spectral Imager), and derivatives from the Arctic Digital Elevation Model (ArcticDEM), that were spatially constrained by a peatland suitability model. Statewide peatland mapping (overall agreement:85%) identified peatlands to cover 4.6, 10.4, and 5.3% of polar, boreal, and maritime ecoregions, respectively, and 7.3% of the total terrestrial land area. This new dataset will improve the representation of peatland carbon, nutrient, and fire dynamics across Alaska.https://doi.org/10.1038/s41597-025-04502-1 |
| spellingShingle | Mark J. Lara Roger Michaelides Duncan Anderson Wenqu Chen Emma C. Hall Caroline Ludden Aiden I. G. Schore Umakant Mishra Sarah N. Scott A 20 m spatial resolution peatland extent map of Alaska Scientific Data |
| title | A 20 m spatial resolution peatland extent map of Alaska |
| title_full | A 20 m spatial resolution peatland extent map of Alaska |
| title_fullStr | A 20 m spatial resolution peatland extent map of Alaska |
| title_full_unstemmed | A 20 m spatial resolution peatland extent map of Alaska |
| title_short | A 20 m spatial resolution peatland extent map of Alaska |
| title_sort | 20 m spatial resolution peatland extent map of alaska |
| url | https://doi.org/10.1038/s41597-025-04502-1 |
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