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Inventory

(3)
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2018/26
(3)
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2009/17
(2)
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2004/06
(2)
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1993/95
(2)
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1983/85

Topic

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Number of tree and shrub species with a diameter at breast height (dbh) ≥12 cm within the 200 m² circle on the sample plot.
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Classification

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Altitudinal vegetation belts in the system used in the guidelines for monitoring the sustainability and performance of protection forests (NaiS; Frehner et al. 2005), reduced to six classes. The variable represents a simplification of the NaiS altitudinal vegetation belts with ten classes (NAISHSTKOMB) in which the classes «hyperinsubric» and «colline» are merged with «colline with beech» to form the class «hyperinsubric and colline» and the class «lower montane» with «upper montane» and «lower/upper montane» to form the class «lower and upper montane». The information is based on the altitudinal vegetation belts determined by experts (accessible forest sample plots of NFI4 on the 1.4-km network; Arge Frehner et al. 2020), as well as on the altitudinal vegetation belts modelled for the period 1981-2010 (other sample plots; Zischg et al. 2021).
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Number of years since the last silvicultural treatment in classes of five or ten years. Silvicultural treatments include harvesting and tending interventions, planting and afforestation, as well as sanitary and safety interventions. Reference: Forest Service Survey (MID: 607: Anzahl Jahre seit dem letzten Eingriff)

region

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Demarcation of Switzerland into six regions with similar flora and fauna. The six regions correspond to the basic categories in the publication «The Biogeographical Regions of Switzerland», which was published by FOEN in 2022.
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evaluation area

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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
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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.
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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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NFI's sampling grid with a mesh size of 1.4 km. The 1.4-km grid is the grid size covering all the previous terrestrial Inventories, which is why it is also called the base grid.
search result: 12 entries on 1 page
LFI5 2018/26
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI4 2009/17
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI4 2009/17
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI4 2009/17
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI2 1993/95
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI2 1993/95
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI1 1983/85
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI1 1983/85
biogeographical region
number of woody species (≥ 12 cm dbh)
time of last treatment (in 5- or 10-year classes)·altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
search result: 12 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