National forest inventory, NFI (Valtakunnan metsien inventointi, VMI)
In Finland, the most important inventorying process of forests is the National Forest Inventory NFI (VMI in Finnish). The NFI is a continuous process. It comprises several aspects, such as estimating the number and growth of trees, forest health and variables linked with biodiversity. Other inventorying processes include various estimations of threatened species and their status. They also include estimating the number of threatened habitats.