A raster version of the Circumpolar Arctic Vegetation Map (CAVM)
Land cover maps are the basic data layer required for understanding and modeling ecological patterns and processes. The Circumpolar Arctic Vegetation Map (CAVM), produced in 2003, has been widely used as a base map for studies in the arctic tundra biome. However, the relatively coarse resolution and...
Published in: | Remote Sensing of Environment |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2019
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Subjects: | |
Online Access: | https://hdl.handle.net/10037/17777 https://doi.org/10.1016/j.rse.2019.111297 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17777 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Raynolds, Martha K. Walker, Donald A. Balser, Andrew Bay, Christian Campbell, Mitch Cherosov, Mikhail M. Daniëls, Fred J.A. Eidesen, Pernille Bronken Ermokhina, Ksenia A. Frost, Gerald V. Jedrzejek, Birgit Jorgenson, M. Torre Kennedy, Blair E. Kholod, Sergei S. Lavrinenko, Igor A. Lavrinenko, Olga V. Magnússon, Borgþór Matveyeva, Nadezhda V. Metúsalemsson, Sigmar Nilsen, Lennart Olthof, Ian Pospelov, Igor N. Pospelova, Elena B. Pouliot, Darren Razzhivin, Vladimir Schaepman-Strub, Gabriela Šibík, Jozef Telyatnikov, Mikhail Yu. Troeva, Elena A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Land cover maps are the basic data layer required for understanding and modeling ecological patterns and processes. The Circumpolar Arctic Vegetation Map (CAVM), produced in 2003, has been widely used as a base map for studies in the arctic tundra biome. However, the relatively coarse resolution and vector format of the map were not compatible with many other data sets. We present a new version of the CAVM, building on the strengths of the original map, while providing a finer spatial resolution, raster format, and improved mapping. The Raster CAVM uses the legend, extent and projection of the original CAVM. The legend has 16 vegetation types, glacier, saline water, freshwater, and non-arctic land. The Raster CAVM divides the original rock-water-vegetation complex map unit that mapped the Canadian Shield into two map units, distinguishing between areas with lichen- and shrub-dominated vegetation. In contrast to the original hand-drawn CAVM, the new map is based on unsupervised classifications of seventeen geographic/floristic sub-sections of the Arctic, using AVHRR and MODIS data (reflectance and NDVI) and elevation data. The units resulting from the classification were modeled to the CAVM types using a wide variety of ancillary data. The map was reviewed by experts familiar with their particular region, including many of the original authors of the CAVM from Canada, Greenland (Denmark), Iceland, Norway (including Svalbard), Russia, and the U.S. The analysis presented here summarizes the area, geographical distribution, elevation, summer temperatures, and NDVI of the map units. The greater spatial resolution of the Raster CAVM allowed more detailed mapping of water-bodies and mountainous areas. It portrays coastal-inland gradients, and better reflects the heterogeneity of vegetation type distribution than the original CAVM. Accuracy assessment of random 1-km pixels interpreted from 6 Landsat scenes showed an average of 70% accuracy, up from 39% for the original CAVM. The distribution of shrub-dominated types changed the most, with more prostrate shrub tundra mapped in mountainous areas, and less low shrub tundra in lowland areas. This improved mapping is important for quantifying existing and potential changes to land cover, a key environmental indicator for modeling and monitoring ecosystems. The final product is publicly available at www.geobotany.uaf.edu and at Mendeley Data, DOI:10.17632/c4xj5rv6kv.1. |
format |
Article in Journal/Newspaper |
author |
Raynolds, Martha K. Walker, Donald A. Balser, Andrew Bay, Christian Campbell, Mitch Cherosov, Mikhail M. Daniëls, Fred J.A. Eidesen, Pernille Bronken Ermokhina, Ksenia A. Frost, Gerald V. Jedrzejek, Birgit Jorgenson, M. Torre Kennedy, Blair E. Kholod, Sergei S. Lavrinenko, Igor A. Lavrinenko, Olga V. Magnússon, Borgþór Matveyeva, Nadezhda V. Metúsalemsson, Sigmar Nilsen, Lennart Olthof, Ian Pospelov, Igor N. Pospelova, Elena B. Pouliot, Darren Razzhivin, Vladimir Schaepman-Strub, Gabriela Šibík, Jozef Telyatnikov, Mikhail Yu. Troeva, Elena |
author_facet |
Raynolds, Martha K. Walker, Donald A. Balser, Andrew Bay, Christian Campbell, Mitch Cherosov, Mikhail M. Daniëls, Fred J.A. Eidesen, Pernille Bronken Ermokhina, Ksenia A. Frost, Gerald V. Jedrzejek, Birgit Jorgenson, M. Torre Kennedy, Blair E. Kholod, Sergei S. Lavrinenko, Igor A. Lavrinenko, Olga V. Magnússon, Borgþór Matveyeva, Nadezhda V. Metúsalemsson, Sigmar Nilsen, Lennart Olthof, Ian Pospelov, Igor N. Pospelova, Elena B. Pouliot, Darren Razzhivin, Vladimir Schaepman-Strub, Gabriela Šibík, Jozef Telyatnikov, Mikhail Yu. Troeva, Elena |
author_sort |
Raynolds, Martha K. |
title |
A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
title_short |
A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
title_full |
A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
title_fullStr |
A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
title_full_unstemmed |
A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
title_sort |
raster version of the circumpolar arctic vegetation map (cavm) |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17777 https://doi.org/10.1016/j.rse.2019.111297 |
geographic |
Arctic Canada Greenland Norway Svalbard |
geographic_facet |
Arctic Canada Greenland Norway Svalbard |
genre |
Arctic Arctic glacier glacier glacier glacier glacier glacier* Greenland Iceland Svalbard Tundra |
genre_facet |
Arctic Arctic glacier glacier glacier glacier glacier glacier* Greenland Iceland Svalbard Tundra |
op_relation |
Remote Sensing of Environment Raynolds MK, Walker DA, Balser, Bay C, Campbell M, Cherosov, Daniëls, Eidesen PB, Ermokhina, Frost, Jedrzejek, Jorgenson, Kennedy, Kholod, Lavrinenko, Lavrinenko, Magnússon B, Matveyeva NV, Metúsalemsson, Nilsen L, Olthof, Pospelov, Pospelova, Pouliot, Razzhivin, Schaepman-Strub G, Šibík J, Telyatnikov, Troeva. A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment. 2019;232 FRIDAID 1723011 doi:10.1016/j.rse.2019.111297 0034-4257 1879-0704 https://hdl.handle.net/10037/17777 |
op_rights |
openAccess Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.1016/j.rse.2019.111297 |
container_title |
Remote Sensing of Environment |
container_volume |
232 |
container_start_page |
111297 |
_version_ |
1766300993824227328 |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/17777 2023-05-15T14:27:19+02:00 A raster version of the Circumpolar Arctic Vegetation Map (CAVM) Raynolds, Martha K. Walker, Donald A. Balser, Andrew Bay, Christian Campbell, Mitch Cherosov, Mikhail M. Daniëls, Fred J.A. Eidesen, Pernille Bronken Ermokhina, Ksenia A. Frost, Gerald V. Jedrzejek, Birgit Jorgenson, M. Torre Kennedy, Blair E. Kholod, Sergei S. Lavrinenko, Igor A. Lavrinenko, Olga V. Magnússon, Borgþór Matveyeva, Nadezhda V. Metúsalemsson, Sigmar Nilsen, Lennart Olthof, Ian Pospelov, Igor N. Pospelova, Elena B. Pouliot, Darren Razzhivin, Vladimir Schaepman-Strub, Gabriela Šibík, Jozef Telyatnikov, Mikhail Yu. Troeva, Elena 2019-07-17 https://hdl.handle.net/10037/17777 https://doi.org/10.1016/j.rse.2019.111297 eng eng Elsevier Remote Sensing of Environment Raynolds MK, Walker DA, Balser, Bay C, Campbell M, Cherosov, Daniëls, Eidesen PB, Ermokhina, Frost, Jedrzejek, Jorgenson, Kennedy, Kholod, Lavrinenko, Lavrinenko, Magnússon B, Matveyeva NV, Metúsalemsson, Nilsen L, Olthof, Pospelov, Pospelova, Pouliot, Razzhivin, Schaepman-Strub G, Šibík J, Telyatnikov, Troeva. A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment. 2019;232 FRIDAID 1723011 doi:10.1016/j.rse.2019.111297 0034-4257 1879-0704 https://hdl.handle.net/10037/17777 openAccess Copyright 2019 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2019 ftunivtroemsoe https://doi.org/10.1016/j.rse.2019.111297 2021-06-25T17:57:06Z Land cover maps are the basic data layer required for understanding and modeling ecological patterns and processes. The Circumpolar Arctic Vegetation Map (CAVM), produced in 2003, has been widely used as a base map for studies in the arctic tundra biome. However, the relatively coarse resolution and vector format of the map were not compatible with many other data sets. We present a new version of the CAVM, building on the strengths of the original map, while providing a finer spatial resolution, raster format, and improved mapping. The Raster CAVM uses the legend, extent and projection of the original CAVM. The legend has 16 vegetation types, glacier, saline water, freshwater, and non-arctic land. The Raster CAVM divides the original rock-water-vegetation complex map unit that mapped the Canadian Shield into two map units, distinguishing between areas with lichen- and shrub-dominated vegetation. In contrast to the original hand-drawn CAVM, the new map is based on unsupervised classifications of seventeen geographic/floristic sub-sections of the Arctic, using AVHRR and MODIS data (reflectance and NDVI) and elevation data. The units resulting from the classification were modeled to the CAVM types using a wide variety of ancillary data. The map was reviewed by experts familiar with their particular region, including many of the original authors of the CAVM from Canada, Greenland (Denmark), Iceland, Norway (including Svalbard), Russia, and the U.S. The analysis presented here summarizes the area, geographical distribution, elevation, summer temperatures, and NDVI of the map units. The greater spatial resolution of the Raster CAVM allowed more detailed mapping of water-bodies and mountainous areas. It portrays coastal-inland gradients, and better reflects the heterogeneity of vegetation type distribution than the original CAVM. Accuracy assessment of random 1-km pixels interpreted from 6 Landsat scenes showed an average of 70% accuracy, up from 39% for the original CAVM. The distribution of shrub-dominated types changed the most, with more prostrate shrub tundra mapped in mountainous areas, and less low shrub tundra in lowland areas. This improved mapping is important for quantifying existing and potential changes to land cover, a key environmental indicator for modeling and monitoring ecosystems. The final product is publicly available at www.geobotany.uaf.edu and at Mendeley Data, DOI:10.17632/c4xj5rv6kv.1. Article in Journal/Newspaper Arctic Arctic glacier glacier glacier glacier glacier glacier* Greenland Iceland Svalbard Tundra University of Tromsø: Munin Open Research Archive Arctic Canada Greenland Norway Svalbard Remote Sensing of Environment 232 111297 |