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:2ec9916d-d938-4212-ba1b-31468ddde8fe
dcterms:title "Land Cover Map 1990" ;
dcterms:identifier "https://catalogue.ceh.ac.uk/id/2ec9916d-d938-4212-ba1b-31468ddde8fe" ;
dcterms:description "Land Cover Map 1990 (LCM1990) is a parcel-based thematic classification of satellite image data covering the entire United Kingdom. The map replaces the earlier Land Cover Map of Great Britain (LCMGB), which was produced in the early 1990’s and covered GB. LCM1990 was produced by the UK Centre for Ecology & Hydrology and is derived from a computer classification of satellite scenes obtained from Landsat. It covers Great Britain and Northern Ireland and incorporates information derived from other ancillary datasets. LCM1990 was classified using a nomenclature corresponding to the Joint Nature Conservation Committee (JNCC) Broad Habitats, which encompasses the entire range of UK habitats. In addition, it recorded further detail where possible. LCM1990 is produced in both vector and raster formats, with a number of different versions containing varying levels of detail and at different spatial resolutions. Refer to the online supporting documentation and lineage statement for information regarding versions. These are one of a series of land cover maps, produced by UKCEH since 1990. They include versions for 1990, 2000, 2007, 2015, 2017, 2018 and 2019." ;
dcterms:provenance [
a dcterms:ProvenanceStatement ;
rdfs:label "The Land Cover Map of Great Britain (LCMGB) was produced at the Institute of Terrestrial Ecology (ITE) Monks Wood using supervised maximum likelihood classifications of Landsat Thematic Mapper satellite data (Fuller, R.M., Groom, G.B. and Jones, A.R. 1994. The Land Cover Map of Great Britain: an automated classification of Landsat Thematic Mapper data. Photogrammetric Engineering & Remote Sensing, 60, 553-562.). The map, available as 25m or 1km grids, records up to 25 cover types, consisting of sea and inland water, beaches and bare ground, developed and arable land, and 18 types of semi-natural vegetation. By combining summer and winter data, classification accuracies were substantially improved over single-date analyses (Fuller, R.M., Groom, G.B. and Wallis, S.M. 1994. The availability of Landsat TM images for Great Britain. International Journal of Remote Sensing. 15, 1357-1362.). In all, 88 percent of Britain was classified from combined summer-winter images, and 12 percent from single-date, mostly summer, data. Just 0.4 percent of Britain was obscured by cloud cover on both summer and winter images. The missing areas of offshore islands represent just 0.1% of Britain. Further details, which relate the map and its cover types to the results of other surveys, are given by Wyatt, B.K., Greatorex-Davies, N.G., Bunce, R.G.H. Fuller, R.M. and Hill, M.O. 1994, Comparison of land cover definitions. Countryside 1990 Series: Volume 3. London:Department of the Environment. See supporting documents supplied with the datasets for more information."
] ;
dcterms:spatial [
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dcat:bbox "POLYGON((-9.227 49.837, -9.227 60.85, 2.6876 60.85, 2.6876 49.837, -9.227 49.837))"^^geo:wktLiteral ;
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dcterms:temporal
[ a dcterms:PeriodOfTime ;
dcat:startDate "1990-01-01"^^xsd:date ;
dcat:endDate "1990-12-31"^^xsd:date ;
] ;
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foaf:name "Centre for Ecology & Hydrology" ;
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skos:prefLabel "Mapping"; rdfs:label "Mapping"
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