National Forest Inventory (NFI) is a forest monitoring system based on systematic sampling on all land. Nowadays, NFI is repeated in every 5 years. These data are from the 11th NFI cycle (2009-2013). One fifth of the NFI11 field plot clusters are permanent, 4 fifths temporary. These data contains only the temporary field plots measured in forest land or poorly produtive forest land. Another restriction of the data is that field plots at the border of two land use or forest stand borders are excluded. The data contains few selected variables describing the forest stand and volume of growing stock (by species group) measured at the plot location. Because the data are only a sub-sample of the full NFI data it cannot be used for calculating unbiased forest resource statistics. These selected data may be used for example as a ground truth data for remote sensing or for validation of map data.

2023