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Inventory

(4)
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2009/17–2018/26
(2)
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2004/06–2009/17
(2)
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1993/95–2004/06

Topic

(8)
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Stemwood volume of all trees and shrubs with a diameter at breast height (dbh) ≥12 cm with bark that died naturally between two inventories (e.g. due to windthrow or insects) or disappeared (e.g. due to avalanches), but that were not harvested. Mortality is the sum of natural losses and the remaining mortality.
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Classification

(8)
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Production capacity of the site in kilograms per hectare and year based on the total mean increment (TMI) according to Keller (1978) - in four classes. Low: TMI ≤1500 kg/(ha/year), moderate: TMI 1501-3000 kg/(ha/year), good: TMI 3001-4500 kg/(ha/year), very good: TMI >4500 kg/(ha/year).
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region

(8)
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Demarcation of Switzerland used in NFI for protection forest analyses. The six protection forest regions were derived from the economic regions by combining individual regions according to natural and statistical criteria.
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evaluation area

(6)
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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.
(2)
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Forest that was less than two-thirds covered with shrubs in both NFI4 (2009-2017) and NFI5 (2018-2026) and is 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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search result: 8 entries on 1 page
LFI4–LFI5 2009/17–2018/26
protection forest region
mortality
site quality
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
m³/ha/year
1000 m³/year
LFI4–LFI5 2009/17–2018/26
protection forest region
mortality
site quality
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
m³/ha/year
1000 m³/year
LFI3–LFI4 2004/06–2009/17
protection forest region
mortality
site quality
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
m³/ha/year
1000 m³/year
LFI2–LFI3 1993/95–2004/06
protection forest region
mortality
site quality
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
m³/ha/year
1000 m³/year
search result: 8 entries on 1 page

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