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Inventory

(26)
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2004/06
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Topic

(26)
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Sum of the stem cross-sectional areas at a height of 1.3 m (level for measuring diameter at breast height [dbh]) of living trees and shrubs (standing and lying) with a dbh ≥12 cm.
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Classification

(26)
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Type of trees and shrubs ≥12 cm in diameter at breast height (dbh) with the ten most common species or species groups in Switzerland ('main tree species') categorised, and the classes 'other conifers' and 'other broadleaves' for the remaining species. The main tree species are: spruce (Picea spp.), fir (Abies spp.), pine (Pinus sylvestris, P. nigra, P. strobus, P. mugo subsp. uncinata), larch (Larix spp.), Arolla pine (Pinus cembra), beech (Fagus sylvatica), maple (Acer spp.), ash (Fraxinus spp.), oak (Quercus spp.) and chestnut (Castanea sativa). Reference: Field Survey (MID 50: Baumart)
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region

(26)
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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

(13)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
(13)
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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

(13)
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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).
(13)
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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: 26 entries on 2 pages
12
LFI3 2004/06
biogeographical region
basal area
main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 6 classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 6 classes)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
diameter at breast height (main diameter classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
diameter at breast height (main diameter classes)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
diameter at breast height (10 classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
diameter at breast height (10 classes)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
dominant diameter at breast height (standing-living - in 8 classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
dominant diameter at breast height (standing-living - in 8 classes)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
forest formations (NaiS; 10 classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
forest formations (NaiS; 10 classes)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
higher/lower altitude zone·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
higher/lower altitude zone·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
ownership (2 categories)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
ownership (2 categories)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI3 2004/06
biogeographical region
basal area
protection forest against avalanches (2022)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
protection forest against avalanches (2022)·main tree species
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
search result: 26 entries on 2 pages
12

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