DIGITAL LANDSCAPE MODEL DLM-DE - DERIVING LAND COVER INFORMATION BY INTEGRATION OF TOPOGRAPHIC REFERENCE DATA WITH REMOTE SENSING DATA

摘要

Within the surrounding frameworks of the programme Global Monitoring for Environment and Security (GMES) (EEA, 2006) and the Directive for the Infrastructure for Spatial Information in the European Community (INSPIRE) (EU, 2007) he Digital Landscape Model for Federal Purpose (DLM-DE) can be seen as a German contribution on the way to interoperability between national and pan-European geoinformation data sets. This paper describes the concept of the "DLM-DE", which was developed by the German Federal Agency for Cartography and Geodesy (Bundesamt fur Kartographie und Geodasie - BKG) in corporation with the Federal Environmental Agency (Umweltbundesamt - UBA), and its implementation plan. It also aims at pointing out the potential benefits and constraints of the deriving of CORINE Land Cover (CLC) data from the DLM-DE as an enhanced alternative to the conventional method proposed by the European Environmental Agency (EEA). The concept of the DLM-DE embodies the integration of topographic reference data (in-situ data) with thematic remote sensing data. Thereby the ATKIS Basis-DLM functions as the basic working data set. Referring to a certain reference year (2009) it shall be updated and verified by adding land cover information through semi-automated analysis and interpretation of mid- to high resoluted satellite imagery. In preparation of deriving the CLC-data the ATKIS feature type catalogue (FC) is compared with the CLC-nomenclature by forming a semantic transformation table and - if necessary - modified due to missing CLC-classes. After a preliminary CLC-coding of all DLM-DE features according to the semantic transformation look-up table they are updated or verified through remote sensing methods. The result will be a high resoluted spatial data set, which is capable to map the land cover information of Germany referring to European nomenclature with so far unequalled accuracy.