GEOSCAN Search Results: Fastlink


TitleDevelopment of a Circa-2000 Land Cover map of Northern Canada at 30m Resolution from Landsat
AuthorOlthof, I; Latifovic, R; Pouliot, D
SourceCanadian Journal of Remote Sensing vol. 35, issue 2, 2009 p. 152-165,
Alt SeriesEarth Sciences Sector, Contribution Series 20090132
PublisherInforma UK Limited
Mediapaper; on-line; digital
File formatpdf
ProvinceQuebec; Northwest Territories; Nunavut; Manitoba
NTS560; 340; 120; 29; 39; 49; 59; 69; 79; 89; 99; 98; 88; 78; 68; 58; 48; 38; 28; 27; 37; 47; 57; 67; 77; 87; 97; 107; 16; 26; 36; 46; 56; 66; 76; 86; 14; 24; 34; 45; 55; 65
Lat/Long WENS-136.0000 -56.0000 84.0000 56.0000
SubjectsNature and Environment; LANDSAT; land use; landscape types; remote sensing; satellite imagery; mapping techniques; topography; vegetation
Illustrationslocation maps; tables
ProgramRemote Sensing Science
Released2014 06 02
AbstractPrevious land cover maps covering Northern Canada have either been of insufficient spatial or thematic detail to address emerging northern issues such as wildlife habitat, land use planning, and fine scale land cover dynamics. Mapping northern land cover requires medium (~30m) resolution remote sensing data to effectively characterize cover types that are spatially heterogeneous and cannot be consistently represented at coarser (250m - 1km) scales. In this paper, we present a land cover map of Northern Canada at 30m spatial resolution suitable for application in northern land use planning, wildlife habitat assessment, and climate change impact assessment and adaption. Orthorectified circa-2000 Landsat data were acquired from the Centre for Topographic Information with coverage from the treeline to the northern tip of Ellesmere Island and combined into sixteen radiometrically-balanced large-area mosaics. A stratified unsupervised cluster labelling approach was used for map generation. Literature on northern land cover and vegetation mapping as well as numerous northern vegetation surveys were examined to define a land cover legend containing 15 classes. Field data gathered during several campaigns were used in conjunction with other available medium resolution land cover maps to develop a dataset for training and validation. Standardized accuracy assessment is limited due to the cost of field data acquisition and small archive of reference data in northern regions. Comparison to field data used only to aid cluster labelling suggests 81.5% accuracy for 76 plots and examination of sub-pixel land cover distribution within each 1km Circumpolar Arctic Vegetation Map (CAVM) class shows good agreement. The map is publicly available through Natural Resource Canada’s Geogratis portal in 1:250k National Topographic System (NTS) mapsheets.

Date modified: