Type of the most important forest function relevant for managing the forest according to forest plans or an assessment by the local forest service during NFI4 (2009-2017). Reference: Forest Service Survey (MID 911: Vorrangfunktion 2)

Code	Text	NFI1	NFI2	NFI3	NFI4	NFI4b	NFI5
-1	n/a	x	x	x	x	x	x
1	no primary forest function	x	x	x	x	x	x
2	timber production	x	x	x	x	x	x
3	agricultural use	x	x	x	x	x	x
4	windbreak	x	x	x	x	x	x
5	drinking-water protection	x	x	x	x	x	x
8	nature conservation	x	x	x	x	x	x
9	landscape protection	x	x	x	x	x	x
10	game protection	x	x	x	x	x	x
11	recreation	x	x	x	x	x	x
12	military	x	x	x	x	x	x
13	protection against natural hazards	x	x	x	x	x	x