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Inventory

(189)
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2018/26
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Topic

area

Classification

(189)
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Proportion of the ground area covered by tree crowns according to the aerial photo interpretation – in five 20-percent classes. The percentage is calculated using the 25 grid points on the interpretation area (50 × 50 m). Reference: aerial photo interpretation
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region

(189)
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Demarcation of Switzerland used in NFI for protective forest analyses. The six protective forest regions were derived from the economic regions by combining individual regions according to natural and statistical criteria.
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evaluation area

(21)
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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.
(21)
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Area accessible on foot that meets the NFI's definition of forest in both NFI4 (2009-2017) and NFI5 (2018-2026), i.e. was either «forest without shrub forest» or «shrub forest».
(21)
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Forest of which less than two-thirds is covered with shrubs that can be accessed on foot.
(21)
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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.
(21)
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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.
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grid

(189)
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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).
search result: 189 entries on 11 pages
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
accessible forest
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
accessible forest NFI4/NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
accessible forest without shrub forest
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
accessible forest without shrub forest NFI1-NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
accessible forest without shrub forest NFI4/NFI5
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
LFI5 2018/26
protective forest region
forest area
altitudinal vegetation belts (NaiS; 6 classes)·degree of cover (aerial photo, 5 classes)
forest
1.4 km grid, subgrids 1-5
column total, %
subtotal, %
1000 ha
search result: 189 entries on 11 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