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Inventory

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2009/17
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Topic

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Forest area closest to young forest plants with a particular type of damage. Young forest plants are trees and shrubs ≥10 cm in height and ≤11.9 cm in diameter at breast height (dbh). However, depending on the inventory, only trees ( NFI3, NFI5) or only trees and selected shrub species (NFI4) were recorded as the nearest young forest plant. Since a young forest plant may have several different types of damage, it can contribute to areas with several different damage types at the same time.

Classification

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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)
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region

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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

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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).
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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, %
search result: 2 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