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Inventory

(18)
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2009/17
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Topic

area
number of stems

Classification

(5)
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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).
(2)
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Damage to young forest plants ≥10 cm in height and ≤11.9 cm in diameter at breast height (dbh), whereby browsing is only assessed on specimens ≤129 cm in height, – in eight classess. Reference: Field Survey (MID 127: Gipfeldürre, MID 174: Verbiss des Leittriebes, MID 977: Fegeschaden, MID 987: Schälschaden, MID 184: Krankheit; MID 183: Holzereischaden, MID 185: anderer Schaden)
(11)
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Species of young forest plants ≥10 cm in height and ≤11.9 cm in diameter at breast height (dbh) with individual classes for the ten most important species or species groups in Switzerland («main tree species»), as well as the classes «other conifers», «other broadleaves» and «species not assessed in all inventories». 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 1051: Jungwaldpflanzenart - Zählung)
(1)
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Species of young forest plants ≥10 cm in height and ≤11.9 cm in diameter at breast height (dbh) with individual classes for the ten most important species or species groups in Switzerland («main tree species»), as well as the classes «other conifers», «other broadleaves» and «species not assessed in all inventories». 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 1050: Jungwaldpflanzenart - nächste Pflanze)
(2)
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Area in/outside a forest that provides protection against avalanches which the cantons designated «protection forest» according to the harmonised criteria of SilvaProtect-CH in 2022. Reference: GIS data from FOEN, 2024
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region

(18)
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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

(18)
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Forest that was less than two-thirds covered with shrubs in the four inventories NFI2 (1993-1995), NFI3 (2004-2006), NFI4 (2009-2017) and NFI5 (2018-2026), was accessible on foot and could be stocked, i.e. did not contain forest roads, recreational facilities, streams, avalanche paths, etc.
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grid

(18)
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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).
search result: 18 entries on 1 page
LFI4 2009/17
protection forest region
forest area (young forest according to type of damage) / forest area (young forest assessed)
size classe (young forest; 3 classes)·damage to young forest plants
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
column total, %
LFI4 2009/17
protection forest region
forest area (young forest according to type of damage) / forest area (young forest assessed)
size classe (young forest; 3 classes)·main tree species in young forests (closest plant)·damage to young forest plants
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
column total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants
size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
main tree species in young forest (counting)·size classe (young forest; 5 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against avalanches (2022)·size classe (young forest; 5 classes)·altitudinal vegetation belts (NaiS; 6 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against avalanches (2022)·size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against channel processes (2022)·size classe (young forest; 5 classes)·altitudinal vegetation belts (NaiS; 6 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against channel processes (2022)·size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against hillslope debris flows/landslides (2022)·size classe (young forest; 5 classes)·altitudinal vegetation belts (NaiS; 6 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against hillslope debris flows/landslides (2022)·size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against rockfall (2022)·size classe (young forest; 5 classes)·altitudinal vegetation belts (NaiS; 6 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest against rockfall (2022)·size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest (2022)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest (2022)·size classe (young forest; 5 classes)·altitudinal vegetation belts (NaiS; 6 classes)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
LFI4 2009/17
protection forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protection forest (2022)·size classe (young forest; 5 classes)·main tree species in young forest (counting)
stockable and accessible forest without shrub forest NFI2-NFI5
1.4 km grid, subgrids 1-5
cell total, %
search result: 18 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