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...
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ftunivzuerich:oai:www.zora.uzh.ch:182503 2024-06-23T07:48:31+00:00 A raster version of the Circumpolar Arctic Vegetation Map (CAVM) Raynolds, Martha K Walker, Donald A Balser, Andrew Schaepman-Strub, Gabriela 2019-10-01 application/pdf https://www.zora.uzh.ch/id/eprint/182503/ https://www.zora.uzh.ch/id/eprint/182503/1/1-s2.0-S0034425719303165-main.pdf https://doi.org/10.5167/uzh-182503 https://doi.org/10.1016/j.rse.2019.111297 eng eng Elsevier https://www.zora.uzh.ch/id/eprint/182503/1/1-s2.0-S0034425719303165-main.pdf doi:10.5167/uzh-182503 doi:10.1016/j.rse.2019.111297 urn:issn:0034-4257 info:eu-repo/semantics/openAccess Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) http://creativecommons.org/licenses/by-nc-nd/4.0/ Raynolds, Martha K; Walker, Donald A; Balser, Andrew; et al; Schaepman-Strub, Gabriela (2019). A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment, 232:111297. Institute of Evolutionary Biology and Environmental Studies Global Change and Biodiversity 570 Life sciences biology 590 Animals (Zoology) Computers in Earth Sciences Soil Science Geology Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftunivzuerich https://doi.org/10.5167/uzh-18250310.1016/j.rse.2019.111297 2024-06-12T00:36:08Z 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 ... Article in Journal/Newspaper Arctic Arctic glacier glacier glacier glacier glacier glacier* Greenland Iceland Svalbard Tundra University of Zurich (UZH): ZORA (Zurich Open Repository and Archive Arctic Canada Greenland Norway Svalbard |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Evolutionary Biology and Environmental Studies Global Change and Biodiversity 570 Life sciences biology 590 Animals (Zoology) Computers in Earth Sciences Soil Science Geology |
spellingShingle |
Institute of Evolutionary Biology and Environmental Studies Global Change and Biodiversity 570 Life sciences biology 590 Animals (Zoology) Computers in Earth Sciences Soil Science Geology Raynolds, Martha K Walker, Donald A Balser, Andrew Schaepman-Strub, Gabriela A raster version of the Circumpolar Arctic Vegetation Map (CAVM) |
topic_facet |
Institute of Evolutionary Biology and Environmental Studies Global Change and Biodiversity 570 Life sciences biology 590 Animals (Zoology) Computers in Earth Sciences Soil Science Geology |
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 ... |
format |
Article in Journal/Newspaper |
author |
Raynolds, Martha K Walker, Donald A Balser, Andrew Schaepman-Strub, Gabriela |
author_facet |
Raynolds, Martha K Walker, Donald A Balser, Andrew Schaepman-Strub, Gabriela |
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://www.zora.uzh.ch/id/eprint/182503/ https://www.zora.uzh.ch/id/eprint/182503/1/1-s2.0-S0034425719303165-main.pdf https://doi.org/10.5167/uzh-182503 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_source |
Raynolds, Martha K; Walker, Donald A; Balser, Andrew; et al; Schaepman-Strub, Gabriela (2019). A raster version of the Circumpolar Arctic Vegetation Map (CAVM). Remote Sensing of Environment, 232:111297. |
op_relation |
https://www.zora.uzh.ch/id/eprint/182503/1/1-s2.0-S0034425719303165-main.pdf doi:10.5167/uzh-182503 doi:10.1016/j.rse.2019.111297 urn:issn:0034-4257 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.5167/uzh-18250310.1016/j.rse.2019.111297 |
_version_ |
1802638904369610752 |