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Inventory

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1993/95
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Topic

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Number of stems of living trees and shrubs (standing and lying) with a diameter at breast height (dbh) ≥12 cm.

Classification

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Classification of trees and shrubs ≥12 cm in diameter at breast height (dbh) into the three classes: «introduced tree species», «native tree species» and «indeterminable and/or shrub species». Introduced tree species are tree species that have been intentionally or unintentionally introduced by humans into habitats outside their natural range. With this classification attribute, which is used in all inventories, the Japanese larch (L. kaempferi) and introduced arboreal willow species are not counted as introduced tree species, because they are recorded together with related native species in certain inventories. The Japanese larch (Larix kaempferi), for example, is grouped together with the European larch (L. decidua). Reference: Field Survey (MID 50: Baumart)
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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 of which less than two-thirds is covered with shrubs that can be accessed on foot.

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.
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search result: 3 entries on 1 page
LFI2 1993/95
protective forest region
number of stems
introduced tree species (tree neophytes; 3 classes; from NFI1 on)
accessible forest without shrub forest
1.4-km grid
column total, %
search result: 3 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