The habitatmap_stdized.gpkg file is a processed version of the Natura 2000 habitat map of Flanders (De Saeger et al., 2018). It contains all polygons with Natura 2000 habitat types or regional important biotopes (RIB). This file is used as basis for designing monitoring schemes in Flanders. In the original habitat map, every polygon can consist of maximum 5 different vegetation types. This information is stored in the columns HAB1 , HAB2 ,..., HAB5 of the attribute table. The fraction of each vegetation type within the polygons is stored in the columns PHAB1 , PHAB2 , ..., PHAB5 . The habitatmap_stdized.gpkg file is a GeoPackage that contains: habitatmap_polygons : a spatial layer with every habitat map polygon that contains a Natura 2000 habitat or RIB type. habitatmap_types : a table with information on the habitat and RIB types (HAB1, HAB2,..., HAB5) that occur within each polygon of habitatmap_polygons. The processing of the habitatmap_types table included following adjustment: For some polygons the ... :