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Inventory

(39)
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2004/06
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Topic

(39)
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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 living trees and shrubs (standing and lying) with a dbh ≥12 cm.
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Classification

(1)
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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).
(8)
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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).
(1)
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Aspect, classified into the following nine classes: North, North-East, East, South-East, South, South-West, West, North-West and indeterminate. «Indeterminate» means that the slope is ≤10%. Reference: Field Survey (MID 191: Azimut der Exposition)
(8)
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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)
(1)
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Stage of stand development, defined by the dominant diameter at breast height (dbhdom = dbh of the 100 largest [thickest] trees per hectare). Young growth/thicket: dbhdom <12 cm, pole timber: dbhdom 12-30 cm, young timber: dbhdom 31-40 cm, medium timber : dbhdom 41-50 cm, old timber: dbhdom >50 cm, mixed: trees of different development stages, no development stage predominant or groups of different development stages covering < 500 m². Reference: Field Survey (MID 261: Entwicklungsstufe)
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region

(39)
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Demarcation of Switzerland into six regions with similar flora and fauna. The six regions correspond to the basic categories in the publication «The Biogeographical Regions of Switzerland», which was published by FOEN in 2022.
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evaluation area

(39)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.

grid

(39)
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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: 39 entries on 3 pages
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
aspect (9 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
conifers and broadleaves
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
development stage
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
diameter at breast height (main diameter classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
dominant diameter at breast height (standing-living - in 8 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
forest type (12 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
forest type (17 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
ownership (2 categories)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
site quality
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
tree species (5 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
tree species (56 classes)
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 6 classes)·conifers and broadleaves
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
altitudinal vegetation belts (NaiS; 6 classes)·main tree species
accessible forest without shrub forest
1.4-km grid
LFI3 2004/06
biogeographical region
basal area
conifers and broadleaves·higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
search result: 39 entries on 3 pages

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