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Topic
fellings
increment
mortality
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Classification
(3)
i
Altitude above sea level in classes of 400 m. Reference: Digital height model DHM 25 from Swisstopo
(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), 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).
(4)
i
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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Proportions of conifers and broadleaves making up the stand structure, classified according to their proportional basal areas into four classes: pure conifer forest: 91-100 % conifers, mixed conifer forest: 51-90 % conifers, mixed broadleaved forest: 11-50 % conifers and pure broadleaved forest: 0-10 % conifers. Reference: Field Survey (MID 265: Mischungsgrad)
(1)
i
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
(21)
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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
(21)
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Forest that was less than two-thirds covered with shrubs and accessible on foot in both NFI2 (1993-1995) and NFI3 (2004-2006).
grid
(21)
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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: 21 entries on 2 pages
12
LFI2–LFI3 1993/95–2004/06
production region
fellings
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
fellings
altitude (in 400 m classes)·main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
fellings
higher/lower altitude zone·conifers and broadleaves
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
fellings
protection forest against avalanches (2022)·main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
fellings
protection forest against channel processes (2022)·main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
fellings and mortality
degree of mixture (terrestrial)
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
fellings and mortality
main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
increment (gross increment)
altitude (in 400 m classes)
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
increment (gross increment)
altitude (in 400 m classes)·conifers and broadleaves
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
increment (gross increment)
protection forest against hillslope debris flows/landslides (2022)·main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
LFI2–LFI3 1993/95–2004/06
production region
increment (gross increment)
site quality·main tree species
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
mortality
site quality
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
mortality
tree species (5 classes)
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
mortality
ownership (2 categories)·conifers and broadleaves
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
m³/ha/year
1000 m³/year
LFI2–LFI3 1993/95–2004/06
production region
mortality
tree species (5 classes)·higher/lower altitude zone
accessible forest without shrub forest NFI2/NFI3
1.4-km grid
1000 m³/year
search result: 21 entries on 2 pages
12
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