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TitleMethods for Deriving Canada Wide Geo-Spatial Datasets in Support of Environmental Monitoring and Modelling
AuthorPavlic, G; Fernandes, RORCID logo; Chen, WORCID logo; Fraser, RORCID logo; Leblanc, S GORCID logo
SourceISPRS Commission IV Symposium, Joint International Symposium on Geospatial Theory, Processing and Applications, Ottawa, July 8-12; 2002.
Alt SeriesEarth Sciences Sector, Contribution Series 20043123
AbstractSatellite remote sensing and numerical modeling are important tools to quantify trends in the environment across Canada. This paper describes methodology and initial results for the production of a new 1-km resolution map of waterbody fraction and 10-km resolution maps of the forest cover type (hardwood/softwood) required as input parameters to these approaches. The waterbody fraction map is derived by gridding and aggregating existing national topographic database waterbody entities. The forest cover type map is produced by blending through decision rules a large number of datasets: 1-km resolution land cover based on satellite remote sensing, 1-km digital elevation model, Soil Landscapes of Canada information, and an ecoregion level descriptions of species occurrence. The quality of the water fraction map and forest cover type map is assessed. Applications of both products to national and regional scale mapping and modeling efforts are discussed. Strategies for improving both products are also outlined.

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