NFI knowledge about the Swiss forest

An information service about the Swiss National Forest Inventory by the Swiss Federal Research Institute WSL.


Forest districts

The interim results of the fifth National Forest Inventory (survey years 2018-2022) can now also be queried by forest district.

Formica rufa

Forest ants

Where do the five most common species of red wood ants (Formica rufa group) live in Switzerland? New maps provide information.


Forest photos

Take a look into the forest. The NFI puts more than 40,000 photos online, with which you can explore the forests of Switzerland - comfortably from home.