The observed (bio)physical cover of the Earth’s surface. The main classes in the LUCAS land cover nomenclature are as follows (http://ec.europa.eu/eurostat/ramon/other_documents/lucas/index.htm):

Classes Nomenclature
A00 Artificial land
B00 Cropland
C00 Woodland
 D00 Shrubland
 E00 Grassland
 F00 Bareland
 G00 Water
 H00 Wetland