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Inventory

(15)
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2018/26
(15)
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2009/17
(10)
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2004/07

Topic

(40)
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Number of species of trees and shrubs that occur within the 200 m² circle on the sample plot with at least one living individual ≥40 cm high.
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Classification

(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) – 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).
(8)
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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)
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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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Combination of the 18 groups of NaiS site types, each with a similar objective for the main tree species (NAISGGROB20), into 10 large associations known as «forest formations». *As the characterisation of the site types in the NaiS-NFI project is on a small scale, it is possible that non-forest site types such as meadow, pasture and rock may be present in sample plots that are classified as «forest» in NFI. Similarly, «forest without shrub forest“ may also contain «shrub forest» site types.

region

(40)
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Regional demarcation with the forest districts as a unit. This variable is based on a survey of the cantonal forest services in winter 2022/2023.
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evaluation area

(15)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
(15)
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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.
(10)
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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

(30)
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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).
(10)
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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: 40 entries on 3 pages
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 6 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
degree of mixture (terrestrial)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
degree of mixture (terrestrial)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
degree of mixture (terrestrial)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
development stage
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
development stage
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
development stage
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
forest formations (NaiS; 10 classes)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
forest formations (NaiS; 10 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI5 2018/26
forest district (2023)
number of woody species (≥40 cm high)
forest formations (NaiS; 10 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
LFI4 2009/17
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest
1.4-km grid
LFI4 2009/17
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
LFI4 2009/17
forest district (2023)
number of woody species (≥40 cm high)
altitudinal vegetation belts (NaiS; 10 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
search result: 40 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