The National Forest Inventory (NFI) is a periodic survey of condition and development of the Swiss forest. It is produced in close cooperation between the Federal Office for the Environment (FOEN) and the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). This record contains information about: sample size (number of forest plots), basal area of deadwood per forest area, growing stock (stemwood), deadwood quantity, deadwood quantity per forest area, deadwood volume (merch. wood without piles of branches), lying, deadwood volume (merch. wood without piles of branches), lying per forest area, growing stock (stemwood) per forest area, total wood volume (stemwood), total wood volume (stemwood) per forest area, volume of deadwood (stemwood), volume of deadwood (stemwood) per forest area, total basal area per forest area, total number of stems, area of vehicle tracks (soil disturbance), area of vehicle tracks (soil disturbance) per forest area, deadwood volume of stumps, deadwood volume of stumps per forest area, biomass of stumps, biomass of stumps per forest area, total number of stems per forest area, number of microhabitats on standing living trees per forest area, deadwood volume (merchantable wood), lying, deadwood volume (merchantable wood), lying per forest area, forest area, biomass of deadwood, biomass of deadwood per forest area, biomass of LIS-deadwood, biomass of LIS-deadwood per forest area, number of stems, number of stems per forest area and basal area per forest area