Start Technical and methodological guide for updating corine land cover database

Technical and methodological guide for updating corine land cover database

On a global scale, several land cover maps at 1-km resolution have been developed in the last years to improve the assessment of major land cover classes and their dynamics.

Forest resource information is predominantly derived from national forest inventories (NFI).

It was developed based on image mosaics of NOAA-AVHRR data with a spatial resolution of 1 km (Häme , 2003).

Since the previous maps were limited in their spatial detail, one having an MMU of 25 ha and the other a 1-km resolution, the high-resolution pan-European forest/non-forest map (FMAP2000) was developed by the Joint Research Centre (Pekkarinen , 2009).

Yet, common reporting at European level is difficult due to the heterogeneity of national forest definitions and their concepts (Köhl , 2010).

For that reason, several initiatives have been established to harmonize information from NFIs.

For Europe, the Co-ordination of Information on the Environment (CORINE) programme was established in 1985 with the main aim to provide consistent and compatible land/forest cover information for Europe (Bossard , 2000).

The CORINE maps are based on a common nomenclature for the land cover/use classes and are mainly derived by visual interpretation of high-resolution Landsat data with a minimum mapping unit (MMU) of 25 ha (Perdigão and Annoni, 1997).

Another pan-European map providing harmonized forest cover information is the Calibrated European Forest Map (CEFM1996).