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Inventory

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1983/85–2018/26
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Topic

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Number of stems of living trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm.
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Classification

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Type of trees and shrubs ≥12 cm in diameter at breast height (dbh) – in 56 classes. The species (or species groups) not explicitly listed are subsumed in the classes «other conifers», «other broadleaved trees» and «other shrubs». Reference: Field Survey (MID 50: Baumart)
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region

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Division of Switzerland into 14 regions (2 in the Jura, 3 on the Plateau, 3 in the Pre-Alps, 5 in the Alps and 1 in the Southern Alps). The economic regions are a subdivision of the production regions according to economic-geographical criteria.
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evaluation area

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Forest that was less than two-thirds covered with shrubs in the five inventories NFI1 (1983-1985), NFI2 (1993-1995), NFI3 (2004-2006), NFI4 (2009-2017) and NFI5 (2018-2026) and was accessible on foot.

grid

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Sub-grids 1, 2, 3, 4 and 5 of the field surveys on the sampling grid with a mesh size of 1.4 km (base grid).
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LFI1–LFI5 1983/85–2018/26
economic region
change: number of stems
tree species (56 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
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Citation

Abegg, M.; Ahles, P.; Allgaier Leuch, B.; Cioldi, F.; Didion, M.; Düggelin, C.; Fischer, C.; Herold, A.; Meile, R.; Rohner, B.; Rösler, E.; Speich, S.; Temperli, C.; Traub, B.,
2023: Swiss national forest inventory NFI. Result tables and maps of the NFI surveys 1983–2022 (NFI1, NFI2, NFI3, NFI4, NFI5.1–5) on the internet. [Published online 30.05.2023] Available from the World Wide Web <http://www.lfi.ch/resultate/> . Birmensdorf, Swiss Federal Research Institute WSL
https://doi.org/10.21258/1769925