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Inventory

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2009/17
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Topic

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Number of stems of conifers and broadleaves 10 to 129 cm in height on which browsing on the shoot from the previous year was detected. Since a different method was used for assessing browsing traces in NFI2, the browsing intensity was overestimated in comparison with in the inventories from NFI4 on. Thus, only increases in browsing intensity can be clearly determined in comparisons with NFI2. For a reliable estimate, at least 30 individuals per estimated value (table cell) should have been assessed for browsing. Therefore, the corresponding tables with the target variable "Number of trees assessed for browsing (no extrapolation)" should also be consulted.
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Classification

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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)
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region

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

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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

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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: 7 entries on 1 page
LFI4 2009/17
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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
protective forest region
number of stems of young forest plants with browsing damage / number of stems of young forest plants assessed for browsing
protective 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: 7 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