LCM2015 is a land cover map of the UK which was produced by the Centre for Ecology & Hydrology by classifying satellite images from 2014 and 2015 into 21 Broad Habitat-based classes.
Two levels of thematic detail are provided for the LCM data sets. The highest level of detail is the 21 target classes which are based on the Joint Nature Conservation Committee (JNCC) Broad Habitats. These encompass the entire range of UK habitats. In addition, 10 aggregate classes are also provided for the 1km data sets. These group some of the more specialised classes into more general categories (for example, five coastal classes in the target dataset are grouped into a single aggregate coastal class).
LCM2015 consists of a range of a vector product and a range of of raster products. Users should familiarise themselves with the full range to select the product most suited to their needs. The data sets, available for both Great Britain and Northern Ireland, are:
- Vector. This is the core LCM data set from which the other products are derived. It provides a number of attributes including land cover at the target class level, the number of pixels within the polygon classified as each land cover type and a probability value provided by the classification algorithm.
- 25m raster. This is the most detailed raster product. The 25m raster product consists of two bands: band 1 is the raster representation of the majority (dominant) class per-polygon for the 21 target classes. Band 2 is the mean per polygon probability as reported by the Random Forest classifier.
- 1km percentage cover raster. 1km percentage products provide the percentage cover for each land cover class for 1km x 1km pixels. The products contain one band per class and are available at two levels of thematic resolution; the 21 target classes (producing a 21 band image) and the 10 aggregate classes (producing a 10 band image).
- The 1km dominant cover raster. The 1km dominant coverage products are based on the 1km percentage products and report the class with the highest percentage cover for each 1km x 1km pixel. The 1km dominant cover products are produced for both the 21 target classes and the 10 aggregate classes.
Further details about the products are available in the documentation that accompanies each dataset.
LCM2015 is the latest in a series of land cover maps, which began with Land Cover Map of Great Britain in 1990 (LCMGB or LCM1990) and was followed by Land Cover Maps for 2000 and 2007 (LCM2000 and LCM2007), both of which covered the entire UK. These datasets are still available from the Environmental Information Data Centre.