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Inventory

(60)
i
2009/17

Topic

number of stems

Classification

(60)
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Presence of woodpecker cavities on dead trees and shrubs (standing and lying) ≥12 cm in diameter at breast height (dbh). In NFI5, information on woodpecker breeding cavities can be found via the topic (target variable): «Number of stems (standing-living) with microhabitat». However, this refers to the standing living trees and not, as here, to the standing or lying dead trees. Reference: Field Survey (MID 490: Totholz Spechtloch)
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region

(12)
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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.
(12)
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Division of Switzerland into 14 regions (2 in the Jura, 3 on the Plateau, 3 in the Pre-Alps, 5 in the Alps and 1 in the Southern Alps). The economic regions are a subdivision of the production regions according to economic-geographical criteria.
(12)
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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.
(12)
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Regional demarcation with the cantons as a unit, with the two half-cantons, Basel-Land and Basel-Stadt, combined into one canton for statistical reasons.
(12)
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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.

evaluation area

(20)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
(20)
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Forest that was less than two-thirds covered with shrubs in the five inventories NFI1 (1983-1985), NFI2 (1993-1995), NFI3 (2004-2006), NFI4 (2009-2017) and NFI5 (2018-2026) and was accessible on foot.
(20)
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Forest that was less than two-thirds covered with shrubs in both NFI4 (2009-2017) and NFI5 (2018-2026) and is accessible on foot.

grid

(40)
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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).
(20)
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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: 60 entries on 4 pages
LFI4 2009/17
production region
number of deadwood stems
deadwood: mechanical strength of wood (3 classes)·woodpecker cavities on dead trees
accessible forest without shrub forest
1.4-km grid
column total, %
subtotal, %
LFI4 2009/17
production region
number of deadwood stems
deadwood: mechanical strength of wood (3 classes)·woodpecker cavities on dead trees
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
LFI4 2009/17
production region
number of deadwood stems
deadwood: mechanical strength of wood (3 classes)·woodpecker cavities on dead trees
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
LFI4 2009/17
economic region
number of deadwood stems
deadwood: mechanical strength of wood (3 classes)·woodpecker cavities on dead trees
accessible forest without shrub forest
1.4-km grid
column total, %
subtotal, %
LFI4 2009/17
economic region
number of deadwood stems
deadwood: mechanical strength of wood (3 classes)·woodpecker cavities on dead trees
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
search result: 60 entries on 4 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