The variable documentation provides information about the attributes that were used in the second National Forest Inventory. The documentation is intended to give a rough overview. A detailed description of the individual attribute values and code definitions is therefore not given at this point. With abbreviated names and the name of the table, it ensures that the attributes are clear and the reference to the database of the second NFI is given. The data for the individual attributes are stored in a relational database in thematic tables and can be linked with the help of key variables (which are not listed here) for the analysis. The list at hand is sorted by themes (=tables) and abbreviated names.