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Inventory

(10)
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2004/06
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Topic

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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 all dead trees and shrubs (standing and lying) with a dbh ≥12 cm.
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Classification

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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) – in ten classes, whereby the classes «hyperinsubric», «colline» and «colline with beech» and «lower and upper montane» only occur in the Southern Alps (S), the classes «submontane», «lower montane», «upper montane» only in the Northern Alps (N) and the classes «high montane», «subalpine» and «upper subalpine» on both sides of the Alps. 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).
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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).
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Type of trees and shrubs ≥12 cm in diameter at breast height (dbh) in two classes (conifers or broadleaves). Reference: Field Survey (MID 50: Baumart)
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Proportion of bark cover on dead trees and shrubs (standing and lying) ≥12 cm in diameter at breast height (dbh) – in three classes. Reference: Field Survey (MID 418: Totholz - Rindendeckung)
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Stage of decay of wood in dead trees and shrubs (standing and lying) ≥12 cm in diameter at breast height (dbh) – in five classes. Reference: Field Survey (MID 419: Totholz - Festigkeit)
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region

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Demarcation of Switzerland into five regions (Jura, Plateau, Pre-Alps, Alps and Southern Alps) with relatively uniform growth and timber production conditions. The production regions were established by the Federal Office of Forestry long before the first National Forest Inventory (NFI1, 1983-1985). With a small exception along Lake Geneva, the boundaries of the production regions still follow the municipal boundaries of the time. Unlike the NFI, the Forestry Statistics of the Federal Statistical Office don't use the production regions as demarcation but rather the forestry zones, whose boundaries are somewhat different.
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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.
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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.
search result: 10 entries on 1 page
LFI3 2004/06
production region
basal area of deadwood
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
conifers and broadleaves
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
extent of damage gaps (10 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
ownership (2 categories)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
tree state (standing/lying)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
conifers and broadleaves·tree state (standing/lying)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
deadwood: mechanical strength of wood (5 classes)·deadwood: bark cover (3 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
production region
basal area of deadwood
main tree species·higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
search result: 10 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