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Inventory

(111)
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2004/07
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Topic

(111)
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All areas designated as forest according to the NFI forest definition. The forest definition includes shrub forest. The target variable "forest area" is also used when classifying the total area as forest or non-forest.
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Classification

(111)
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Areas in higher and lower altitude zones classified according to the system used for altitudinal vegetation belts in the guidelines for monitoring the sustainability and performance of protection forests (NaiS; Frehner et al. 2005). The boundary between the higher and lower altitudes runs between the «upper montane» and «lower montane» levels on the Northern Alps and between the «high montane» and «upper/lower montane» levels to the Southern 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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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

(13)
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Area that meets the forest definition of the NFI, i.e. is «forest without shrub forest» or «shrub forest», and can be reached on foot.
(38)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
(41)
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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.
(16)
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Area that meets the NFI's definition of 'forest', i.e. is «a forest without shrub forest» or «a shrub forest».
(3)
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Area of Switzerland or a region (e.g. production region or canton) regardless of its cover. In NFI, the total area is made up of the components «forest without shrub forest», «shrub forest» and «non-forest».

grid

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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).
(70)
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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: 111 entries on 7 pages
LFI3 2004/07
production region
forest area
higher/lower altitude zone
accessible forest
1.4-km grid
column total, %
1000 ha
LFI3 2004/07
production region
forest area
higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
column total, %
1000 ha
LFI3 2004/07
production region
forest area
higher/lower altitude zone
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
1000 ha
LFI3 2004/07
production region
forest area
higher/lower altitude zone
forest
1.4-km grid
column total, %
1000 ha
LFI3 2004/07
production region
forest area
crown closure·higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
column total, %
subtotal, %
1000 ha
LFI3 2004/07
production region
forest area
crown closure·higher/lower altitude zone
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI3 2004/07
production region
forest area
degree of mixture (terrestrial)·higher/lower altitude zone
accessible forest without shrub forest
1.4-km grid
column total, %
subtotal, %
1000 ha
LFI3 2004/07
production region
forest area
degree of mixture (terrestrial)·higher/lower altitude zone
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
search result: 111 entries on 7 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