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NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonconcept of transportation system %± %± %±
AGroad and skidding track..70.52.770.52.7
road and skidding road..26.52.726.52.7
road and cable line......
road and flight path......
no access intended..3.01.13.01.1
total..100.0.100.0.
AIroad and skidding track..74.47.966.08.1
road and skidding road..9.65.38.54.8
road and cable line50.025.23.23.28.54.8
road and flight path......
no access intended50.025.212.86.017.06.4
total100.0.100.0.100.0.
ARroad and skidding track..60.47.158.07.0
road and skidding road..26.96.425.96.2
road and cable line100.0.8.34.011.94.6
road and flight path..4.43.14.33.0
no access intended......
total100.0.100.0.100.0.
BEroad and skidding track16.24.147.21.744.61.6
road and skidding road3.82.121.01.419.61.3
road and cable line58.85.520.21.423.41.4
road and flight path6.32.74.30.74.50.7
no access intended15.04.07.30.97.90.9
total100.0.100.0.100.0.
BL/BSroad and skidding track..67.94.567.94.5
road and skidding road..23.44.223.44.2
road and cable line..6.72.56.72.5
road and flight path......
no access intended..2.01.42.01.4
total..100.0.100.0.
FRroad and skidding track..45.13.343.73.3
road and skidding road28.617.124.62.924.72.8
road and cable line42.918.723.72.824.22.8
road and flight path28.617.13.11.23.91.3
no access intended..3.61.23.51.2
total100.0.100.0.100.0.
GEroad and skidding track..71.714.471.714.4
road and skidding road..28.314.428.314.4
road and cable line......
road and flight path......
no access intended......
total..100.0.100.0.
GLroad and skidding track..18.64.714.03.6
road and skidding road..4.32.43.21.8
road and cable line43.310.335.75.837.65.0
road and flight path21.78.612.84.015.03.7
no access intended35.010.028.55.430.14.8
total100.0.100.0.100.0.
GRroad and skidding track9.72.616.71.315.81.2
road and skidding road4.51.88.91.08.30.9
road and cable line64.24.143.31.746.21.6
road and flight path10.42.68.10.98.40.9
no access intended11.22.723.01.421.31.3
total100.0.100.0.100.0.
JUroad and skidding track40.021.948.63.748.43.7
road and skidding road20.017.942.13.741.53.6
road and cable line..1.60.91.60.9
road and flight path......
no access intended40.021.97.62.08.52.0
total100.0.100.0.100.0.
LUroad and skidding track..54.03.253.43.2
road and skidding road..26.52.926.22.8
road and cable line100.0.15.62.416.72.4
road and flight path..0.80.60.80.6
no access intended..3.01.12.91.1
total100.0.100.0.100.0.
NEroad and skidding track66.719.360.53.960.73.8
road and skidding road16.715.333.13.832.53.7
road and cable line..1.91.11.81.1
road and flight path..0.60.60.60.6
no access intended16.715.33.81.54.31.6
total100.0.100.0.100.0.
NWroad and skidding track12.511.818.26.817.15.9
road and skidding road12.511.89.15.19.84.7
road and cable line50.017.851.78.751.47.8
road and flight path12.511.820.97.119.36.2
no access intended12.511.8..2.42.4
total100.0.100.0.100.0.
OWroad and skidding track..7.12.66.52.4
road and skidding road11.110.518.23.917.63.7
road and cable line55.616.641.45.042.64.8
road and flight path33.315.830.34.630.64.5
no access intended..3.01.72.81.6
total100.0.100.0.100.0.
SGroad and skidding track28.69.946.92.945.62.8
road and skidding road23.89.319.82.420.12.3
road and cable line28.69.920.12.420.72.3
road and flight path9.56.43.11.03.61.1
no access intended9.56.410.11.810.01.7
total100.0.100.0.100.0.
SHroad and skidding track..90.63.190.63.1
road and skidding road..9.43.79.43.7
road and cable line......
road and flight path......
no access intended......
total..100.0.100.0.
SOroad and skidding track..68.33.468.03.4
road and skidding road..24.23.124.03.1
road and cable line..4.31.54.31.5
road and flight path......
no access intended100.0.3.21.33.71.4
total100.0.100.0.100.0.
SZroad and skidding track..23.33.422.23.3
road and skidding road..13.02.712.32.6
road and cable line74.915.443.64.045.13.9
road and flight path25.115.411.72.612.32.6
no access intended..8.42.28.02.1
total100.0.100.0.100.0.
TGroad and skidding track..84.23.384.23.3
road and skidding road..13.43.013.43.0
road and cable line......
road and flight path......
no access intended..2.41.42.41.4
total..100.0.100.0.
TIroad and skidding track5.22.911.21.310.71.2
road and skidding road6.93.33.90.84.20.8
road and cable line12.14.315.11.414.81.3
road and flight path17.25.06.00.97.01.0
no access intended58.76.563.71.963.31.8
total100.0.100.0.100.0.
URroad and skidding track..14.34.210.83.2
road and skidding road4.34.38.53.37.52.7
road and cable line47.810.417.24.524.84.5
road and flight path26.19.231.55.630.14.8
no access intended21.78.628.55.426.84.6
total100.0.100.0.100.0.
VDroad and skidding track34.58.860.32.158.92.1
road and skidding road..20.71.819.61.7
road and cable line48.39.37.71.29.81.3
road and flight path..1.90.61.80.6
no access intended17.27.09.41.39.81.3
total100.0.100.0.100.0.
VSroad and skidding track10.22.620.81.818.61.5
road and skidding road1.51.06.01.05.10.9
road and cable line48.94.327.22.031.81.8
road and flight path24.13.720.61.821.31.6
no access intended15.43.125.41.923.31.7
total100.0.100.0.100.0.
ZGroad and skidding track..33.38.332.38.1
road and skidding road..39.48.638.38.4
road and cable line100.0.27.37.829.47.9
road and flight path......
no access intended......
total100.0.100.0.100.0.
ZHroad and skidding track..77.02.677.02.6
road and skidding road..14.72.214.72.2
road and cable line..7.11.67.11.6
road and flight path......
no access intended..1.10.61.10.6
total..100.0.100.0.
Switzerlandroad and skidding track11.81.441.50.639.00.5
road and skidding road4.90.916.80.515.80.4
road and cable line49.02.119.50.521.90.5
road and flight path14.81.56.00.36.80.3
no access intended19.51.716.20.416.40.4
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158693/145072

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track..34.5434.54
road and skidding road..13.01013.010
road and cable line......
road and flight path......
no access intended..1.5351.535
total..49.0249.02
AIroad and skidding track..3.5153.515
road and skidding road..0.5560.556
road and cable line0.3700.21000.556
road and flight path......
no access intended0.3700.6480.938
total0.6484.8105.47
ARroad and skidding track..4.8134.813
road and skidding road..2.1242.124
road and cable line0.3700.7491.039
road and flight path..0.4710.471
no access intended......
total0.3707.968.26
BEroad and skidding track2.32873.8476.14
road and skidding road0.55832.9733.47
road and cable line8.41431.6740.06
road and flight path0.9456.8167.615
no access intended2.12911.41213.511
total14.211156.42170.61
BL/BSroad and skidding track..13.9713.97
road and skidding road..4.8184.818
road and cable line..1.4371.437
road and flight path......
no access intended..0.4700.470
total..20.5420.54
FRroad and skidding track..18.5818.58
road and skidding road0.47110.11210.412
road and cable line0.5589.71210.212
road and flight path0.4711.3371.633
no access intended..1.5351.535
total1.33741.0342.23
GEroad and skidding track..2.2252.225
road and skidding road..0.9520.952
road and cable line......
road and flight path......
no access intended......
total..3.1133.113
GLroad and skidding track..2.2272.227
road and skidding road..0.5570.557
road and cable line1.7304.3186.015
road and flight path0.9441.5322.425
no access intended1.4353.4214.817
total4.01912.0916.06
GRroad and skidding track2.32824.9827.28
road and skidding road1.14113.31114.411
road and cable line15.11064.5479.64
road and flight path2.42712.11214.511
no access intended2.62634.2736.86
total23.58149.02172.41
JUroad and skidding track0.47115.8816.28
road and skidding road0.210013.7913.99
road and cable line..0.5570.557
road and flight path......
no access intended0.4712.5262.824
total0.94432.5333.43
LUroad and skidding track..21.8721.87
road and skidding road..10.71110.711
road and cable line0.5586.3156.815
road and flight path..0.3710.371
no access intended..1.2381.238
total0.55840.4340.93
NEroad and skidding track0.75017.0717.87
road and skidding road0.21009.3129.512
road and cable line..0.5570.557
road and flight path..0.21000.2100
no access intended0.21001.1401.337
total1.14028.2329.23
NWroad and skidding track0.21001.2381.435
road and skidding road0.21000.6560.848
road and cable line0.8483.3194.116
road and flight path0.21001.4361.533
no access intended0.2100..0.2100
total1.6326.5108.06
OWroad and skidding track..1.3371.337
road and skidding road0.21003.2223.421
road and cable line0.9447.4138.312
road and flight path0.5575.4165.915
no access intended..0.5570.557
total1.63217.8519.44
SGroad and skidding track1.14123.6724.77
road and skidding road0.94410.01210.912
road and cable line1.14110.21211.211
road and flight path0.4711.6331.930
no access intended0.4715.1185.417
total3.72150.4354.13
SHroad and skidding track..11.3511.35
road and skidding road..1.2391.239
road and cable line......
road and flight path......
no access intended......
total..12.4412.44
SOroad and skidding track..22.3622.36
road and skidding road..7.9137.913
road and cable line..1.4351.435
road and flight path......
no access intended0.21001.0401.237
total0.210032.6332.83
SZroad and skidding track..6.6156.615
road and skidding road..3.6213.621
road and cable line1.14012.31013.49
road and flight path0.4703.3233.721
no access intended..2.4272.427
total1.53528.1429.64
TGroad and skidding track..17.9517.95
road and skidding road..2.9232.923
road and cable line......
road and flight path......
no access intended..0.5580.558
total..21.3421.34
TIroad and skidding track0.55812.51113.111
road and skidding road0.7504.4205.118
road and cable line1.23816.81018.19
road and flight path1.8316.7168.514
no access intended6.01771.2477.23
total10.313111.72121.92
URroad and skidding track..1.9311.931
road and skidding road0.21001.1401.337
road and cable line2.1292.2284.319
road and flight path1.1404.1205.217
no access intended0.9443.7214.718
total4.31913.1917.46
VDroad and skidding track1.83156.9458.74
road and skidding road..19.6919.69
road and cable line2.5267.3159.813
road and flight path..1.8311.831
no access intended0.9458.9149.813
total5.31894.4299.72
VSroad and skidding track2.42718.3920.78
road and skidding road0.3715.3185.617
road and cable line11.41223.9835.36
road and flight path5.61718.1923.78
no access intended3.62222.4825.97
total23.4887.93111.32
ZGroad and skidding track..1.9261.926
road and skidding road..2.3242.324
road and cable line0.21001.6291.827
road and flight path......
no access intended......
total0.21005.876.07
ZHroad and skidding track..38.2438.24
road and skidding road..7.3157.315
road and cable line..3.5223.522
road and flight path......
no access intended..0.6580.658
total..49.6249.62
Switzerlandroad and skidding track11.612446.82458.51
road and skidding road4.819181.03185.83
road and cable line48.16209.63257.72
road and flight path14.51164.8579.44
no access intended19.29174.03193.13
total98.241076.311174.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158694/145073

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %±
inside perimeterroad and skidding track52.110.0..14.74.110.11.64.92.411.91.4
road and skidding road8.05.4..10.73.63.20.96.22.74.90.9
road and cable line12.06.5100.0.53.35.854.62.629.75.148.92.1
road and flight path4.03.9..13.33.915.91.914.83.914.81.5
no access intended23.98.5..8.03.116.21.944.45.519.51.7
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track61.61.576.81.234.91.419.60.911.91.241.50.6
road and skidding road29.61.419.41.123.41.38.40.73.40.716.90.5
road and cable line3.00.51.50.329.31.336.61.120.21.419.40.5
road and flight path0.50.20.10.16.90.713.10.86.80.96.00.3
no access intended5.40.72.20.45.50.722.31.057.61.816.20.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track61.41.576.71.233.71.418.00.811.31.139.00.5
road and skidding road29.11.419.41.122.61.27.50.63.70.615.90.4
road and cable line3.20.51.60.330.71.339.81.121.11.421.90.5
road and flight path0.50.20.10.17.30.713.60.77.60.96.80.3
no access intended5.80.72.20.45.70.721.20.956.41.716.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158695/145074

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track2.428..2.0306.6160.75011.612
road and skidding road0.471..1.4352.1290.9454.819
road and cable line0.5580.21007.21635.774.32047.96
road and flight path0.2100..1.83210.4132.12914.511
no access intended1.141..1.14110.6136.41619.19
total4.6200.210013.41165.4514.31198.04
outside perimeterroad and skidding track121.13176.5271.7460.0516.410445.71
road and skidding road58.2544.6648.0625.784.719181.23
road and cable line5.8173.42360.05111.7327.77208.63
road and flight path0.9450.210014.21140.069.41364.65
no access intended10.6135.21811.31268.0579.14174.13
total196.61229.81205.21305.41137.221074.31
totalroad and skidding track123.53176.5273.6466.6517.110457.31
road and skidding road58.5544.6649.5527.885.617186.03
road and cable line6.4173.62267.24147.4331.97256.52
road and flight path1.1410.210015.91050.4611.51279.15
no access intended11.7125.21812.41278.6485.43193.23
total201.21230.01218.61370.81151.621172.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158696/145075

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %± %±
inside perimeterroad and skidding track50.09.814.03.27.22.810.22.610.83.04.92.411.91.4
road and skidding road7.75.25.82.17.22.81.51.04.52.06.22.74.90.9
road and cable line15.47.158.74.547.05.548.94.362.14.629.75.149.02.1
road and flight path3.83.88.32.518.14.224.13.710.82.914.83.914.71.5
no access intended23.08.313.23.120.54.415.43.111.73.144.45.519.51.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track69.90.929.21.433.21.820.81.817.11.411.91.241.50.6
road and skidding road24.00.919.71.216.51.46.01.010.51.23.40.716.80.5
road and cable line2.20.333.81.528.21.827.22.043.61.920.21.419.50.5
road and flight path0.30.18.70.99.01.120.61.87.71.06.80.96.00.3
no access intended3.70.48.50.913.01.325.41.921.21.557.61.816.20.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track69.70.927.61.330.31.718.61.516.21.311.31.139.00.5
road and skidding road23.90.918.31.115.51.35.10.99.71.03.70.615.80.4
road and cable line2.30.336.41.430.31.731.81.846.11.721.11.421.90.5
road and flight path0.30.18.70.810.01.121.31.68.11.07.60.96.70.3
no access intended3.90.49.00.913.81.323.31.719.91.456.41.716.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158697/145076

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track2.3283.1241.0412.4272.1290.75011.612
road and skidding road0.4711.3381.0410.3710.9450.9454.819
road and cable line0.75012.8126.71611.41212.1124.32048.16
road and flight path0.21001.8322.6265.6172.1292.12914.411
no access intended1.1412.9252.9243.6222.3286.41619.19
total4.72021.9914.41023.4819.4914.31198.04
outside perimeterroad and skidding track298.1253.6538.3618.3921.0916.410445.71
road and skidding road102.5436.3719.195.31813.0114.719180.93
road and cable line9.21462.1532.6723.9853.7527.77209.23
road and flight path1.14116.11010.41318.199.4139.41364.45
no access intended15.71115.71015.01022.4826.2879.14174.03
total426.61183.82115.3287.93123.32137.221074.21
totalroad and skidding track300.4256.7539.3620.7823.1817.110457.31
road and skidding road102.9437.6620.195.61713.8115.617185.63
road and cable line9.91375.0439.3635.3665.8431.97257.32
road and flight path1.33817.91013.01123.7811.51211.51278.84
no access intended16.81018.6917.9925.9728.4785.43193.13
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158698/145077

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionconcept of transportation system %± %± %±
Western Juraroad and skidding track52.010.058.21.758.01.7
road and skidding road8.05.431.61.630.91.6
road and cable line12.06.53.00.63.30.6
road and flight path4.03.90.60.30.70.3
no access intended24.08.56.60.97.10.9
total100.0.100.0.100.0.
Eastern Juraroad and skidding track..73.32.773.32.7
road and skidding road..22.62.722.62.7
road and cable line..2.81.12.81.1
road and flight path......
no access intended..1.20.71.20.7
total..100.0.100.0.
Western Plateauroad and skidding track..75.42.675.42.6
road and skidding road..20.42.520.42.5
road and cable line......
road and flight path..0.40.40.40.4
no access intended..3.81.23.81.2
total..100.0.100.0.
Central Plateauroad and skidding track..76.02.175.82.1
road and skidding road..21.12.021.02.0
road and cable line100.0.1.50.61.70.6
road and flight path......
no access intended..1.50.61.50.6
total100.0.100.0.100.0.
Eastern Plateauroad and skidding track..78.01.778.01.7
road and skidding road..17.81.517.81.5
road and cable line..2.10.62.10.6
road and flight path......
no access intended..2.10.62.10.6
total..100.0.100.0.
Western Pre-Alpsroad and skidding track19.17.726.63.025.82.8
road and skidding road7.75.221.22.719.82.5
road and cable line53.99.838.83.340.43.1
road and flight path15.47.14.51.45.61.5
no access intended3.93.89.01.98.41.8
total100.0.100.0.100.0.
Central Pre-Alpsroad and skidding track9.15.032.92.131.52.0
road and skidding road12.15.725.61.924.81.8
road and cable line54.58.728.72.030.32.0
road and flight path15.26.29.21.39.61.3
no access intended9.15.03.50.83.80.8
total100.0.100.0.100.0.
Eastern Pre-Alpsroad and skidding track18.89.842.12.541.22.4
road and skidding road12.58.321.82.121.42.0
road and cable line50.012.524.72.125.72.1
road and flight path6.36.15.21.15.21.1
no access intended12.58.36.21.26.41.2
total100.0.100.0.100.0.
Northwestern Alpsroad and skidding track14.54.524.22.622.42.3
road and skidding road1.61.67.61.66.51.3
road and cable line62.96.139.42.943.72.7
road and flight path1.61.611.21.99.41.6
no access intended19.45.017.72.318.02.1
total100.0.100.0.100.0.
Central Alpsroad and skidding track..15.53.412.22.7
road and skidding road3.23.211.12.99.52.4
road and cable line54.79.028.64.234.23.9
road and flight path25.97.925.84.125.83.6
no access intended16.26.618.93.618.33.2
total100.0.100.0.100.0.
Northeastern Alpsroad and skidding track8.34.623.23.520.23.0
road and skidding road8.34.66.42.16.81.9
road and cable line38.88.137.74.137.93.6
road and flight path16.66.26.32.08.32.1
no access intended27.97.526.53.726.83.3
total100.0.100.0.100.0.
Southwestern Alpsroad and skidding track10.22.620.81.818.61.5
road and skidding road1.51.06.01.05.10.9
road and cable line48.94.327.22.031.81.8
road and flight path24.13.720.61.821.31.6
no access intended15.43.125.41.923.31.7
total100.0.100.0.100.0.
Southeastern Alpsroad and skidding track10.83.017.11.416.21.3
road and skidding road4.52.010.51.29.71.0
road and cable line62.14.643.61.946.11.7
road and flight path10.82.97.71.08.11.0
no access intended11.73.121.21.519.91.4
total100.0.100.0.100.0.
Southern Alpsroad and skidding track4.92.411.91.211.31.1
road and skidding road6.22.73.40.73.70.6
road and cable line29.75.120.21.421.11.4
road and flight path14.83.96.80.97.60.9
no access intended44.45.557.61.856.41.7
total100.0.100.0.100.0.
Switzerlandroad and skidding track11.81.441.50.639.00.5
road and skidding road4.90.916.80.515.80.4
road and cable line49.02.119.50.522.00.5
road and flight path14.81.56.00.36.80.3
no access intended19.51.716.20.416.40.4
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158699/145078

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionconcept of transportation system1000 ha± %1000 ha± %1000 ha± %
Western Juraroad and skidding track2.32887.0389.43
road and skidding road0.47147.3547.65
road and cable line0.5584.5205.019
road and flight path0.21000.9451.141
no access intended1.1419.91310.912
total4.520149.51154.01
Eastern Juraroad and skidding track..34.6434.64
road and skidding road..10.71210.712
road and cable line..1.3381.338
road and flight path......
no access intended..0.6580.658
total..47.2247.22
Western Plateauroad and skidding track..37.3437.34
road and skidding road..10.11210.112
road and cable line......
road and flight path..0.21000.2100
no access intended..1.9311.931
total..49.4349.43
Central Plateauroad and skidding track..52.8352.83
road and skidding road..14.61014.610
road and cable line0.21001.0411.238
road and flight path......
no access intended..1.0411.041
total0.210069.5269.62
Eastern Plateauroad and skidding track..86.5386.53
road and skidding road..19.7919.79
road and cable line..2.4272.427
road and flight path......
no access intended..2.4282.428
total..110.91110.91
Western Pre-Alpsroad and skidding track0.94510.81211.711
road and skidding road0.4718.6139.013
road and cable line2.62615.8918.48
road and flight path0.7501.8312.626
no access intended0.21003.7223.821
total4.81940.7345.53
Central Pre-Alpsroad and skidding track0.55830.7731.37
road and skidding road0.75023.9824.68
road and cable line3.22326.8730.07
road and flight path0.9458.6149.513
no access intended0.5583.2233.821
total5.91793.3299.22
Eastern Pre-Alpsroad and skidding track0.55829.9630.46
road and skidding road0.47115.51015.810
road and cable line1.43517.6919.08
road and flight path0.21003.7213.921
no access intended0.4714.4194.719
total2.82571.1273.92
Northwestern Alpsroad and skidding track1.63312.01113.711
road and skidding road0.21003.8214.021
road and cable line7.01519.6826.67
road and flight path0.21005.6185.817
no access intended2.2288.81311.012
total11.21249.8461.03
Central Alpsroad and skidding track..3.4233.423
road and skidding road0.21002.4272.626
road and cable line3.2236.2169.412
road and flight path1.5355.6177.115
no access intended0.9444.1205.118
total5.81721.8727.65
Northeastern Alpsroad and skidding track0.5575.6166.116
road and skidding road0.5571.6332.128
road and cable line2.4269.21211.510
road and flight path1.0401.5332.525
no access intended1.7316.4158.113
total6.11624.3630.44
Southwestern Alpsroad and skidding track2.42718.3920.78
road and skidding road0.3715.3185.617
road and cable line11.41223.9835.36
road and flight path5.61718.1923.78
no access intended3.62222.4825.97
total23.4887.93111.32
Southeastern Alpsroad and skidding track2.12921.0923.18
road and skidding road0.94513.01113.811
road and cable line12.11253.7565.84
road and flight path2.1299.41311.512
no access intended2.32826.2828.47
total19.49123.32142.82
Southern Alpsroad and skidding track0.75016.41017.110
road and skidding road0.9454.7195.617
road and cable line4.32027.7731.97
road and flight path2.1299.41311.512
no access intended6.41679.1485.43
total14.311137.22151.62
Switzerlandroad and skidding track11.612446.41458.01
road and skidding road4.819181.23186.03
road and cable line48.36209.73258.02
road and flight path14.51164.8579.44
no access intended19.29173.93193.13
total98.441076.011174.41

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158700/145079

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %± %±
inside perimeterskidder57.89.7..20.02.712.62.918.14.010.43.318.41.6
forwarder11.66.3..1.30.8....1.11.11.30.5
mobile tower yarder19.37.7..20.42.734.64.223.44.45.72.521.71.7
cable crane3.93.8..32.93.115.03.239.45.032.25.028.51.9
helicopter7.65.2..24.02.837.84.319.14.149.45.429.41.9
others....1.30.8....1.11.10.70.4
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder76.61.373.01.245.01.225.92.125.71.815.21.350.20.6
forwarder18.11.224.31.13.20.42.90.84.80.93.60.711.10.4
mobile tower yarder2.60.51.60.316.20.917.01.816.61.55.00.88.90.4
cable crane1.10.30.80.218.90.99.71.430.71.919.71.412.00.4
helicopter0.80.30.10.115.60.943.32.321.31.755.51.817.00.4
others0.90.30.20.11.10.21.10.50.90.40.90.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder76.11.373.01.242.21.123.01.824.71.714.81.247.50.6
forwarder17.91.224.31.13.00.42.20.64.20.83.40.610.20.4
mobile tower yarder3.00.51.60.316.70.820.91.717.51.55.10.710.00.4
cable crane1.20.30.80.220.50.910.91.331.91.821.01.413.40.4
helicopter0.90.30.10.116.50.842.12.121.01.654.91.718.00.4
others0.80.30.20.11.10.20.90.40.70.30.90.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158701/145080

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder2.726..8.0152.7253.0241.63318.010
forwarder0.558..0.558....0.21001.338
mobile tower yarder0.945..8.2157.5153.9210.94521.39
cable crane0.2100..13.2113.2236.5165.01928.18
helicopter0.471..9.6138.2143.2237.61528.98
others....0.558....0.21000.750
total4.719..40.1621.6816.51015.41098.34
outside perimeterskidder145.82187.22139.3320.0926.1721.49539.71
forwarder34.4762.4510.0132.2284.9195.018119.04
mobile tower yarder4.9194.12150.1613.11116.8107.11696.14
cable crane2.2292.03058.457.51531.2727.67128.93
helicopter1.4350.47148.1633.4621.6877.84182.73
others1.6330.5583.4230.9450.9451.2388.514
total190.31256.61309.3177.03101.62140.121075.01
totalskidder148.52187.22147.3322.7829.1723.08557.81
forwarder34.9762.4510.5132.2284.9195.218120.24
mobile tower yarder5.8174.12158.3520.6820.797.915117.54
cable crane2.4282.03071.6510.71237.7632.67157.03
helicopter1.8320.47157.7541.6524.8885.43211.62
others1.6330.5583.9210.9450.9451.4359.214
total195.01256.61349.4198.72118.12155.521173.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158702/145081

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonmain type of harvest %± %± %±
AGskidder..76.12.576.12.5
forwarder..22.72.622.72.6
mobile tower yarder......
cable crane..1.10.71.10.7
helicopter......
others......
total..100.0.100.0.
AIskidder..84.06.674.57.4
forwarder..3.23.22.82.8
mobile tower yarder..3.23.22.82.8
cable crane50.025.2..5.73.9
helicopter50.025.29.65.314.25.9
others......
total100.0.100.0.100.0.
ARskidder..72.86.569.96.6
forwarder..14.55.113.94.9
mobile tower yarder..2.12.12.02.0
cable crane100.0.6.23.59.94.3
helicopter..4.43.14.33.0
others......
total100.0.100.0.100.0.
BEskidder21.24.659.31.756.11.6
forwarder3.82.111.61.110.91.0
mobile tower yarder23.84.810.81.011.91.0
cable crane27.55.09.11.010.61.0
helicopter21.24.68.20.99.30.9
others2.51.71.00.31.10.3
total100.0.100.0.100.0.
BL/BSskidder..68.74.668.74.6
forwarder..23.64.223.64.2
mobile tower yarder..5.72.35.72.3
cable crane..2.01.42.01.4
helicopter......
others......
total..100.0.100.0.
FRskidder14.313.257.63.356.33.3
forwarder14.313.214.32.314.32.3
mobile tower yarder42.918.713.92.314.72.3
cable crane..8.51.98.21.8
helicopter28.617.15.31.56.01.6
others..0.40.40.40.4
total100.0.100.0.100.0.
GEskidder..24.513.224.513.2
forwarder..75.513.075.513.0
mobile tower yarder......
cable crane......
helicopter......
others......
total..100.0.100.0.
GLskidder4.34.328.65.422.64.4
forwarder..1.41.41.11.1
mobile tower yarder26.09.212.94.016.23.8
cable crane21.78.624.25.123.64.4
helicopter48.010.529.95.534.44.9
others..2.92.02.11.5
total100.0.100.0.100.0.
GRskidder17.23.324.81.523.81.4
forwarder..4.10.73.60.6
mobile tower yarder19.43.414.31.215.01.1
cable crane44.04.332.01.633.71.5
helicopter18.63.423.61.422.91.3
others0.70.71.20.41.10.3
total100.0.100.0.100.0.
JUskidder100.0.90.22.290.42.2
forwarder..6.61.86.41.8
mobile tower yarder..1.10.81.10.7
cable crane..1.10.81.10.7
helicopter..0.50.50.50.5
others..0.50.50.50.5
total100.0.100.0.100.0.
LUskidder..77.22.776.32.8
forwarder..3.81.23.71.2
mobile tower yarder33.327.39.31.99.61.9
cable crane66.727.38.01.88.81.8
helicopter..1.70.81.70.8
others......
total100.0.100.0.100.0.
NEskidder66.719.389.82.489.02.5
forwarder16.715.35.71.96.11.9
mobile tower yarder16.715.31.30.91.81.1
cable crane..0.60.60.60.6
helicopter..0.60.60.60.6
others..1.91.11.81.1
total100.0.100.0.100.0.
NWskidder25.015.424.37.524.56.8
forwarder......
mobile tower yarder12.511.821.37.219.66.2
cable crane37.517.230.48.131.87.3
helicopter25.015.420.97.121.76.5
others..3.03.02.42.4
total100.0.100.0.100.0.
OWskidder11.110.526.24.425.04.2
forwarder..1.01.00.90.9
mobile tower yarder22.213.923.34.223.24.1
cable crane33.315.816.13.717.63.7
helicopter33.315.833.44.833.34.6
others......
total100.0.100.0.100.0.
SGskidder47.610.964.92.863.82.7
forwarder4.84.74.21.24.21.1
mobile tower yarder..4.91.34.51.2
cable crane28.69.917.72.318.42.2
helicopter14.37.67.31.57.81.5
others4.84.71.00.61.30.6
total100.0.100.0.100.0.
SHskidder..40.66.140.66.1
forwarder..59.46.059.46.0
mobile tower yarder......
cable crane......
helicopter......
others......
total..100.0.100.0.
SOskidder..50.63.750.33.7
forwarder..44.13.643.83.6
mobile tower yarder..3.81.43.71.4
cable crane100.0.0.50.51.10.8
helicopter......
others..1.10.81.10.8
total100.0.100.0.100.0.
SZskidder..38.33.936.43.8
forwarder..1.30.91.20.9
mobile tower yarder..20.23.219.23.1
cable crane74.915.426.03.528.43.6
helicopter25.115.413.62.814.22.7
others..0.70.70.60.6
total100.0.100.0.100.0.
TGskidder..73.33.973.33.9
forwarder..26.73.926.73.9
mobile tower yarder......
cable crane......
helicopter......
others......
total..100.0.100.0.
TIskidder12.14.315.11.414.81.4
forwarder1.71.74.10.83.90.7
mobile tower yarder1.71.73.80.83.60.7
cable crane18.95.117.31.517.41.4
helicopter65.56.259.32.059.81.9
others..0.50.30.40.3
total100.0.100.0.100.0.
URskidder8.75.924.15.120.34.2
forwarder......
mobile tower yarder8.75.97.23.17.52.8
cable crane47.810.410.03.619.44.1
helicopter34.810.053.06.048.55.2
others..5.72.84.32.1
total100.0.100.0.100.0.
VDskidder41.49.171.82.070.22.0
forwarder..15.21.614.41.5
mobile tower yarder31.08.65.21.06.61.1
cable crane17.27.03.80.84.50.9
helicopter10.35.74.00.94.30.9
others......
total100.0.100.0.100.0.
VSskidder12.42.828.02.024.71.7
forwarder..2.70.72.10.6
mobile tower yarder36.54.118.41.722.21.6
cable crane15.33.19.31.310.61.2
helicopter35.84.140.62.239.61.9
others..1.00.40.80.3
total100.0.100.0.100.0.
ZGskidder..66.78.364.78.3
forwarder..6.14.25.94.1
mobile tower yarder100.0.21.27.223.57.3
cable crane..6.14.25.94.1
helicopter......
others......
total100.0.100.0.100.0.
ZHskidder..63.53.063.53.0
forwarder..28.22.728.22.7
mobile tower yarder..4.91.34.91.3
cable crane..2.30.92.30.9
helicopter......
others..1.10.61.10.6
total..100.0.100.0.
Switzerlandskidder18.41.650.10.647.40.6
forwarder1.30.511.20.410.40.4
mobile tower yarder21.71.78.90.410.00.4
cable crane28.51.912.00.413.30.4
helicopter29.41.917.00.418.00.4
others0.70.40.80.10.80.1
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158703/145082

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonmain type of harvest1000 ha± %1000 ha± %1000 ha± %
AGskidder..37.3437.34
forwarder..11.11111.111
mobile tower yarder......
cable crane..0.6580.658
helicopter......
others......
total..49.0249.02
AIskidder..4.0134.013
forwarder..0.21000.2100
mobile tower yarder..0.21000.2100
cable crane0.370..0.370
helicopter0.3700.5560.842
others......
total0.6484.8105.47
ARskidder..5.8115.811
forwarder..1.1361.136
mobile tower yarder..0.21000.2100
cable crane0.3700.5570.843
helicopter..0.4710.471
others......
total0.3707.968.26
BEskidder3.02492.8395.83
forwarder0.55818.1918.79
mobile tower yarder3.42316.91020.39
cable crane3.92114.21118.19
helicopter3.02412.81115.810
others0.4711.6332.030
total14.211156.42170.61
BL/BSskidder..14.1814.18
forwarder..4.8184.818
mobile tower yarder..1.2401.240
cable crane..0.4700.470
helicopter......
others......
total..20.5420.54
FRskidder0.210023.6623.86
forwarder0.21005.9176.016
mobile tower yarder0.5585.7176.216
cable crane..3.5223.522
helicopter0.4712.2282.526
others..0.21000.2100
total1.33741.0342.23
GEskidder..0.8570.857
forwarder..2.4212.421
mobile tower yarder......
cable crane......
helicopter......
others......
total..3.1133.113
GLskidder0.21003.4213.620
forwarder..0.21000.2100
mobile tower yarder1.0401.6332.625
cable crane0.9442.9233.819
helicopter1.9293.6205.516
others..0.3700.370
total4.01912.0916.06
GRskidder4.02136.9641.06
forwarder..6.1176.117
mobile tower yarder4.51921.4925.98
cable crane10.31347.7558.05
helicopter4.42035.1639.56
others0.21001.8321.930
total23.58149.02172.41
JUskidder0.94429.3430.24
forwarder..2.1282.128
mobile tower yarder..0.4710.471
cable crane..0.4710.471
helicopter..0.21000.2100
others..0.21000.2100
total0.94432.5333.43
LUskidder..31.2531.25
forwarder..1.5331.533
mobile tower yarder0.21003.7203.920
cable crane0.3713.2223.621
helicopter..0.7500.750
others......
total0.55840.4340.93
NEskidder0.75025.3426.04
forwarder0.21001.6331.831
mobile tower yarder0.21000.4700.557
cable crane..0.21000.2100
helicopter..0.21000.2100
others..0.5570.557
total1.14028.2329.23
NWskidder0.4701.6322.028
forwarder......
mobile tower yarder0.21001.4351.632
cable crane0.6562.0282.624
helicopter0.4701.4361.731
others..0.21000.2100
total1.6326.5108.06
OWskidder0.21004.7184.817
forwarder..0.21000.2100
mobile tower yarder0.4704.1194.518
cable crane0.5572.9243.421
helicopter0.5575.9156.514
others......
total1.63217.8519.44
SGskidder1.83132.8634.55
forwarder0.21002.1292.327
mobile tower yarder..2.5262.526
cable crane1.1418.91310.012
helicopter0.5583.7214.220
others0.21000.5580.750
total3.72150.4354.13
SHskidder..5.1165.116
forwarder..7.4117.411
mobile tower yarder......
cable crane......
helicopter......
others......
total..12.4412.44
SOskidder..16.5816.58
forwarder..14.4914.49
mobile tower yarder..1.2371.237
cable crane0.21000.21000.371
helicopter......
others..0.3710.371
total0.210032.6332.83
SZskidder..10.81110.811
forwarder..0.4710.471
mobile tower yarder..5.7165.716
cable crane1.1407.3148.413
helicopter0.4703.8214.220
others..0.21000.2100
total1.53528.1429.64
TGskidder..15.6715.67
forwarder..5.7155.715
mobile tower yarder......
cable crane......
helicopter......
others......
total..21.3421.34
TIskidder1.23816.81018.19
forwarder0.21004.5194.719
mobile tower yarder0.21004.2204.420
cable crane1.93019.3921.28
helicopter6.71666.2473.04
others..0.5580.558
total10.313111.72121.92
URskidder0.4703.1233.522
forwarder......
mobile tower yarder0.4700.9441.337
cable crane2.1291.3373.422
helicopter1.5346.9148.412
others..0.7490.749
total4.31913.1917.46
VDskidder2.22967.8370.03
forwarder..14.31114.311
mobile tower yarder1.6334.9196.516
cable crane0.9453.6224.520
helicopter0.5583.8224.320
others......
total5.31894.4299.72
VSskidder2.92424.6827.57
forwarder..2.4272.427
mobile tower yarder8.51416.21024.78
cable crane3.6228.21411.812
helicopter8.41435.7644.05
others..0.9450.945
total23.4887.93111.32
ZGskidder..3.9153.915
forwarder..0.4700.470
mobile tower yarder0.21001.2341.432
cable crane..0.4700.470
helicopter......
others......
total0.21005.876.07
ZHskidder..31.5531.55
forwarder..14.01014.010
mobile tower yarder..2.4272.427
cable crane..1.1401.140
helicopter......
others..0.6580.658
total..49.6249.62
Switzerlandskidder18.010539.11557.11
forwarder1.238120.83122.13
mobile tower yarder21.3996.34117.54
cable crane28.08128.73156.73
helicopter28.98182.93211.82
others0.7508.6149.314
total98.241076.311174.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158704/145083

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %±
inside perimeterskidder60.19.8..24.04.915.91.911.13.518.41.6
forwarder12.06.5..2.71.90.30.31.21.21.30.5
mobile tower yarder16.07.3100.0.22.74.825.22.26.22.721.81.7
cable crane4.03.9..29.35.329.72.429.75.128.41.9
helicopter7.95.3..20.04.628.12.351.85.629.51.9
others....1.31.30.80.5..0.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder76.41.372.51.256.21.528.81.114.51.350.30.6
forwarder18.71.225.11.24.40.63.40.43.80.711.10.4
mobile tower yarder2.40.51.30.314.71.016.70.95.20.88.90.4
cable crane1.00.30.50.214.71.022.31.019.51.411.90.4
helicopter0.60.20.30.29.30.927.71.156.11.817.00.4
others0.80.30.20.10.70.21.20.30.90.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder76.01.372.41.254.31.426.51.014.21.247.60.6
forwarder18.61.225.11.24.30.62.80.43.60.610.30.4
mobile tower yarder2.70.51.40.315.21.018.20.85.20.810.00.4
cable crane1.10.30.50.215.61.023.60.920.51.413.30.4
helicopter0.80.30.30.210.00.927.81.055.71.718.10.4
others0.80.30.20.10.70.21.10.20.80.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158705/145084

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder2.726..3.22310.4131.63318.010
forwarder0.558..0.4710.21000.21001.338
mobile tower yarder0.7500.21003.02416.5100.94521.39
cable crane0.2100..3.92119.494.32027.88
helicopter0.471..2.72618.4107.41528.98
others....0.21000.558..0.750
total4.6200.210013.41165.4514.31198.04
outside perimeterskidder150.12166.52115.4388.0420.09540.01
forwarder36.8657.859.01410.2135.218119.04
mobile tower yarder4.7193.02430.1750.967.11695.84
cable crane2.0301.23830.1768.0526.88128.13
helicopter1.3380.75019.2984.7477.04182.83
others1.6330.5581.4353.7221.2388.514
total196.61229.81205.21305.41137.221074.31
totalskidder152.92166.52118.6398.4421.69558.01
forwarder37.4657.859.31410.4135.418120.34
mobile tower yarder5.5183.22333.2767.358.015117.14
cable crane2.2291.23834.0787.4431.07155.93
helicopter1.6330.75021.99103.1484.43211.72
others1.6330.5581.6334.2201.2389.214
total201.21230.01218.61370.81151.621172.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158706/145085

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %± %±
inside perimeterskidder57.79.722.33.815.64.012.42.819.03.711.13.518.41.6
forwarder11.56.31.71.21.21.2....1.21.21.30.5
mobile tower yarder19.27.725.64.010.83.436.54.119.83.86.22.721.71.7
cable crane3.83.828.14.139.85.415.33.141.44.729.75.128.51.9
helicopter7.65.220.73.731.35.135.84.118.93.751.85.629.41.9
others..1.71.21.21.2..0.90.9..0.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder74.20.948.11.648.61.928.02.027.41.714.51.350.20.6
forwarder22.20.93.70.63.90.82.70.74.40.83.80.711.10.4
mobile tower yarder1.80.318.21.211.21.218.41.715.11.35.20.88.90.4
cable crane0.80.215.41.118.71.59.31.332.61.819.51.411.90.4
helicopter0.50.113.71.116.11.440.62.219.71.556.11.817.00.4
others0.50.10.80.31.50.51.00.40.90.30.90.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder74.00.945.41.544.91.824.71.726.31.514.21.247.60.6
forwarder22.10.83.50.53.60.72.10.63.80.73.60.610.30.4
mobile tower yarder2.00.319.01.211.21.222.21.615.71.35.20.810.00.4
cable crane0.80.216.81.121.01.510.61.233.81.720.51.413.30.4
helicopter0.50.114.51.017.81.439.61.919.61.455.71.718.00.4
others0.50.10.90.31.50.40.80.30.90.30.80.30.80.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158707/145086

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder2.7264.9192.2282.9243.7221.63318.010
forwarder0.5580.4710.2100....0.21001.338
mobile tower yarder0.9455.6181.6338.5143.9210.94521.39
cable crane0.21006.1175.7173.6228.1144.32027.98
helicopter0.4714.5204.5198.4143.7227.41528.88
others..0.4710.2100..0.2100..0.750
total4.72021.9914.41023.4819.4914.31198.04
outside perimeterskidder316.6188.5456.0524.6833.8620.09539.51
forwarder94.846.9164.5192.4275.4185.218119.24
mobile tower yarder7.71533.4713.01116.21018.697.11696.04
cable crane3.22328.4821.688.21440.2626.88128.33
helicopter2.03025.3818.5935.7624.2877.04182.63
others2.2291.4351.7310.9451.1411.2388.514
total426.61183.82115.3287.93123.32137.221074.21
totalskidder319.3193.4458.3427.5737.5621.69557.51
forwarder95.347.2164.7192.4275.4185.418120.54
mobile tower yarder8.71439.0614.51024.7822.488.015117.34
cable crane3.42334.5727.3711.81248.3531.07156.33
helicopter2.32829.8723.0844.0527.9784.43211.52
others2.2291.8321.9300.9451.2381.2389.214
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158708/145087

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionmain type of harvest %± %± %±
Western Juraskidder60.09.880.71.480.11.4
forwarder12.06.513.81.213.71.2
mobile tower yarder16.07.32.50.52.90.6
cable crane4.03.91.10.41.20.4
helicopter8.05.40.80.31.00.3
others..1.10.41.00.3
total100.0.100.0.100.0.
Eastern Juraskidder..61.33.161.33.1
forwarder..35.83.135.83.1
mobile tower yarder..2.00.92.00.9
cable crane..0.80.60.80.6
helicopter......
others......
total..100.0.100.0.
Western Plateauskidder..70.62.870.62.8
forwarder..28.72.828.72.8
mobile tower yarder......
cable crane......
helicopter..0.80.50.80.5
others......
total..100.0.100.0.
Central Plateauskidder..74.32.274.12.2
forwarder..23.32.123.22.1
mobile tower yarder100.0.1.70.61.90.7
cable crane..0.20.20.20.2
helicopter..0.50.30.50.3
others......
total100.0.100.0.100.0.
Eastern Plateauskidder..72.01.872.01.8
forwarder..24.81.724.81.7
mobile tower yarder..1.60.51.60.5
cable crane..1.00.41.00.4
helicopter......
others..0.50.30.50.3
total..100.0.100.0.
Western Pre-Alpsskidder22.98.245.03.342.73.1
forwarder3.93.88.61.98.11.7
mobile tower yarder42.49.724.32.926.22.8
cable crane11.66.313.12.312.92.1
helicopter15.47.18.51.99.21.8
others3.93.80.50.50.80.6
total100.0.100.0.100.0.
Central Pre-Alpsskidder21.27.158.02.255.82.1
forwarder3.03.01.70.61.80.6
mobile tower yarder15.26.214.31.514.31.5
cable crane36.48.413.71.515.01.5
helicopter24.27.511.61.412.31.4
others..0.80.40.70.4
total100.0.100.0.100.0.
Eastern Pre-Alpsskidder31.311.660.22.459.12.4
forwarder..5.51.15.21.1
mobile tower yarder6.36.19.91.59.81.4
cable crane43.812.416.81.917.81.9
helicopter18.89.86.91.37.41.3
others..0.70.40.70.4
total100.0.100.0.100.0.
Northwestern Alpsskidder22.65.332.12.830.42.5
forwarder..3.61.13.00.9
mobile tower yarder24.25.420.62.421.22.2
cable crane30.65.920.62.422.42.3
helicopter21.05.222.02.521.82.2
others1.61.61.10.61.20.6
total100.0.100.0.100.0.
Central Alpsskidder6.54.428.24.223.63.5
forwarder......
mobile tower yarder6.54.420.03.717.13.1
cable crane54.79.08.72.618.43.2
helicopter32.38.439.74.638.14.0
others..3.51.72.71.4
total100.0.100.0.100.0.
Northeastern Alpsskidder16.66.233.03.929.73.4
forwarder2.82.72.81.42.81.2
mobile tower yarder16.66.28.42.310.12.3
cable crane24.97.232.13.930.73.5
helicopter36.38.021.63.424.53.2
others2.82.72.11.22.21.1
total100.0.100.0.100.0.
Southwestern Alpsskidder12.42.828.02.024.71.7
forwarder..2.70.72.10.6
mobile tower yarder36.54.118.41.722.21.6
cable crane15.33.19.31.310.61.2
helicopter35.84.140.62.239.61.9
others..1.00.40.80.3
total100.0.100.0.100.0.
Southeastern Alpsskidder19.03.727.41.726.31.5
forwarder..4.40.83.80.7
mobile tower yarder19.83.815.11.315.71.3
cable crane41.44.732.61.833.81.7
helicopter18.93.719.71.519.61.4
others0.90.90.90.30.90.3
total100.0.100.0.100.0.
Southern Alpsskidder11.13.514.51.314.21.2
forwarder1.21.23.80.73.60.6
mobile tower yarder6.22.75.20.85.20.8
cable crane29.75.119.51.420.51.4
helicopter51.85.656.11.855.71.7
others..0.90.30.80.3
total100.0.100.0.100.0.
Switzerlandskidder18.31.650.20.647.50.6
forwarder1.30.511.10.410.30.4
mobile tower yarder21.71.79.00.410.00.4
cable crane28.61.911.90.413.30.4
helicopter29.41.917.00.418.00.4
others0.70.40.80.10.80.1
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158709/145088

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · main type of harvest · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionmain type of harvest1000 ha± %1000 ha± %1000 ha± %
Western Juraskidder2.726120.72123.42
forwarder0.55820.6921.19
mobile tower yarder0.7503.8224.520
cable crane0.21001.6331.831
helicopter0.4711.3381.633
others..1.6331.633
total4.520149.51154.01
Eastern Juraskidder..29.0629.06
forwarder..16.9916.99
mobile tower yarder..0.9450.945
cable crane..0.4710.471
helicopter......
others......
total..47.2247.22
Western Plateauskidder..34.9534.95
forwarder..14.21014.210
mobile tower yarder......
cable crane......
helicopter..0.4710.471
others......
total..49.4349.43
Central Plateauskidder..51.6351.63
forwarder..16.2916.29
mobile tower yarder0.21001.2381.335
cable crane..0.21000.2100
helicopter..0.3710.371
others......
total0.210069.5269.62
Eastern Plateauskidder..79.9379.93
forwarder..27.6727.67
mobile tower yarder..1.8311.831
cable crane..1.1411.141
helicopter......
others..0.5580.558
total..110.91110.91
Western Pre-Alpsskidder1.14118.4819.58
forwarder0.21003.5223.722
mobile tower yarder2.0309.91211.911
cable crane0.6585.3185.917
helicopter0.7503.5224.220
others0.21000.21000.471
total4.81940.7345.53
Central Pre-Alpsskidder1.33854.1455.44
forwarder0.21001.6331.831
mobile tower yarder0.94513.31114.211
cable crane2.22912.81114.910
helicopter1.43510.81212.212
others..0.7500.750
total5.91793.3299.22
Eastern Pre-Alpsskidder0.94542.7543.65
forwarder..3.9213.921
mobile tower yarder0.21007.0157.215
cable crane1.23812.01113.211
helicopter0.5584.9185.517
others..0.5580.558
total2.82571.1273.92
Northwestern Alpsskidder2.52616.01018.59
forwarder..1.8311.831
mobile tower yarder2.72510.31213.011
cable crane3.42210.31213.710
helicopter2.32711.01213.311
others0.21000.5580.750
total11.21249.8461.03
Central Alpsskidder0.4716.2166.516
forwarder......
mobile tower yarder0.4714.3204.719
cable crane3.2231.9315.118
helicopter1.9318.61310.512
others..0.8500.850
total5.81721.8727.65
Northeastern Alpsskidder1.0408.0139.013
forwarder0.21000.7500.844
mobile tower yarder1.0402.0283.123
cable crane1.5337.8139.312
helicopter2.2275.3177.514
others0.21000.5570.750
total6.11624.3630.44
Southwestern Alpsskidder2.92424.6827.57
forwarder..2.4272.427
mobile tower yarder8.51416.21024.78
cable crane3.6228.21411.812
helicopter8.41435.7644.05
others..0.9450.945
total23.4887.93111.32
Southeastern Alpsskidder3.72233.8637.56
forwarder..5.4185.418
mobile tower yarder3.92118.6922.48
cable crane8.11440.2648.35
helicopter3.72224.2827.97
others0.21001.1411.238
total19.49123.32142.82
Southern Alpsskidder1.63320.0921.69
forwarder0.21005.2185.418
mobile tower yarder0.9457.1168.015
cable crane4.32026.8831.07
helicopter7.41577.0484.43
others..1.2381.238
total14.311137.22151.62
Switzerlandskidder18.010539.81557.81
forwarder1.238119.94121.23
mobile tower yarder21.3996.54117.84
cable crane28.28128.43156.63
helicopter29.08182.93211.82
others0.7508.5149.314
total98.441076.011174.41

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158710/145089

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago27.08.7..34.73.222.83.729.84.74.62.326.21.9
11-20 years ago30.79.0..20.02.714.23.122.34.38.02.917.71.6
21-30 years ago23.18.3..11.62.111.02.810.63.216.13.912.51.4
31-40 years ago3.93.8..12.92.29.52.69.63.011.53.410.91.3
41-50 years ago3.93.8..7.11.79.42.63.21.810.33.37.31.1
over 50 years ago11.66.3..13.82.333.14.224.54.449.45.425.31.8
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago55.41.574.61.142.01.217.91.826.91.812.71.245.20.6
11-20 years ago18.51.214.10.918.50.911.31.519.81.78.01.015.70.5
21-30 years ago14.41.17.00.711.70.811.31.515.71.510.51.111.20.4
31-40 years ago4.60.62.00.48.10.79.31.47.21.17.10.95.90.3
41-50 years ago2.40.51.00.35.00.511.11.54.80.97.20.94.30.3
over 50 years ago4.80.71.30.314.70.939.12.325.51.854.51.817.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago54.71.574.61.141.21.119.01.627.31.711.91.143.60.6
11-20 years ago18.81.214.10.918.60.911.91.320.21.58.00.915.90.4
21-30 years ago14.61.17.00.711.70.711.21.315.01.411.11.111.40.4
31-40 years ago4.50.62.00.48.60.69.31.27.61.07.50.96.30.3
41-50 years ago2.40.51.00.35.20.510.71.34.60.87.50.94.50.3
over 50 years ago4.90.71.30.314.60.837.82.025.41.754.01.718.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158711/145090

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.338..13.9114.9184.9190.75025.78
11-20 years ago1.435..8.0153.1233.7221.23817.510
21-30 years ago1.141..4.6202.4261.8312.52712.312
31-40 years ago0.2100..5.2182.1291.6331.83110.713
41-50 years ago0.2100..2.9252.0290.5581.6337.216
over 50 years ago0.558..5.5187.1154.0217.61524.98
total4.719..40.1621.6816.51015.41098.34
outside perimeterless than 10 years ago105.43191.52130.0313.81127.4717.89485.91
11-20 years ago35.3736.1757.158.71420.1911.212168.63
21-30 years ago27.3817.91036.278.71415.91014.811120.94
31-40 years ago8.7145.21825.087.1157.31510.01363.35
41-50 years ago4.5202.72615.3118.5144.91910.11346.16
over 50 years ago9.0143.22345.6630.1725.9876.34190.23
total190.31256.61309.3177.03101.62140.121075.01
totalless than 10 years ago106.73191.52143.9318.8932.3618.59511.61
11-20 years ago36.7636.1765.1511.81223.8812.412186.03
21-30 years ago28.4717.91040.9611.11217.7917.210133.23
31-40 years ago8.9145.21830.279.2138.91411.71274.15
41-50 years ago4.7192.72618.21010.6125.41811.71253.36
over 50 years ago9.6133.22351.1637.3629.9783.93215.12
total195.01256.61349.4198.72118.12155.521173.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158712/145091

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years) %± %± %±
AGless than 10 years ago..79.52.379.52.3
11-20 years ago..10.21.910.21.9
21-30 years ago..4.51.34.51.3
31-40 years ago..3.01.13.01.1
41-50 years ago..1.50.81.50.8
over 50 years ago..1.10.71.10.7
total..100.0.100.0.
AIless than 10 years ago..44.88.939.78.3
11-20 years ago25.021.916.06.617.06.4
21-30 years ago25.021.919.27.119.96.8
31-40 years ago50.025.29.65.314.25.9
41-50 years ago......
over 50 years ago..10.45.79.25.1
total100.0.100.0.100.0.
ARless than 10 years ago..45.67.143.87.0
11-20 years ago50.035.622.86.123.96.0
21-30 years ago50.035.619.25.820.55.8
31-40 years ago..4.12.94.02.8
41-50 years ago..4.12.94.02.8
over 50 years ago..4.12.94.02.8
total100.0.100.0.100.0.
BEless than 10 years ago37.55.454.81.753.31.6
11-20 years ago27.55.016.11.217.11.2
21-30 years ago12.53.710.71.010.81.0
31-40 years ago8.83.26.10.86.40.8
41-50 years ago6.32.73.30.63.50.6
over 50 years ago7.52.99.01.08.90.9
total100.0.100.0.100.0.
BL/BSless than 10 years ago..56.14.856.14.8
11-20 years ago..19.53.919.53.9
21-30 years ago..15.73.615.73.6
31-40 years ago..2.81.62.81.6
41-50 years ago..3.91.93.91.9
over 50 years ago..2.01.42.01.4
total..100.0.100.0.
FRless than 10 years ago57.118.758.53.358.43.2
11-20 years ago14.313.215.12.415.12.4
21-30 years ago14.313.28.91.99.11.9
31-40 years ago14.313.25.41.55.61.5
41-50 years ago..4.51.44.31.3
over 50 years ago..7.61.87.41.7
total100.0.100.0.100.0.
GEless than 10 years ago..56.615.556.615.5
11-20 years ago..24.513.224.513.2
21-30 years ago......
31-40 years ago......
41-50 years ago..9.49.49.49.4
over 50 years ago..9.49.49.49.4
total..100.0.100.0.
GLless than 10 years ago39.010.235.95.836.65.0
11-20 years ago8.75.921.44.918.24.0
21-30 years ago8.75.914.34.212.93.5
31-40 years ago13.07.04.32.46.42.5
41-50 years ago8.75.97.13.17.52.7
over 50 years ago22.08.717.14.518.34.0
total100.0.100.0.100.0.
GRless than 10 years ago22.43.625.01.524.71.4
11-20 years ago18.63.418.21.318.21.2
21-30 years ago14.93.114.61.214.71.1
31-40 years ago9.72.67.50.97.80.9
41-50 years ago3.01.54.90.74.60.7
over 50 years ago31.44.029.81.630.01.5
total100.0.100.0.100.0.
JUless than 10 years ago20.017.955.23.754.33.6
11-20 years ago20.017.915.32.715.42.6
21-30 years ago40.021.916.92.817.62.8
31-40 years ago20.017.95.51.75.91.7
41-50 years ago..1.60.91.60.9
over 50 years ago..5.51.75.31.6
total100.0.100.0.100.0.
LUless than 10 years ago33.327.356.13.255.83.2
11-20 years ago..16.92.416.72.4
21-30 years ago33.327.315.22.315.42.3
31-40 years ago33.327.35.91.56.21.6
41-50 years ago..1.30.71.20.7
over 50 years ago..4.71.44.61.4
total100.0.100.0.100.0.
NEless than 10 years ago50.020.473.23.472.43.3
11-20 years ago33.319.315.92.916.62.9
21-30 years ago..8.32.28.02.1
31-40 years ago..0.60.60.60.6
41-50 years ago......
over 50 years ago16.715.31.91.12.51.2
total100.0.100.0.100.0.
NWless than 10 years ago37.517.239.58.539.17.6
11-20 years ago12.511.830.18.026.67.0
21-30 years ago12.511.89.15.19.84.7
31-40 years ago......
41-50 years ago12.511.8..2.42.4
over 50 years ago25.015.421.37.222.06.5
total100.0.100.0.100.0.
OWless than 10 years ago55.616.650.55.050.94.8
11-20 years ago..11.13.210.22.9
21-30 years ago..7.12.66.52.4
31-40 years ago11.110.56.12.46.52.4
41-50 years ago11.110.54.02.04.62.0
over 50 years ago22.213.921.24.121.34.0
total100.0.100.0.100.0.
SGless than 10 years ago33.310.348.32.947.32.8
11-20 years ago19.08.619.12.319.12.2
21-30 years ago14.37.611.11.911.31.8
31-40 years ago19.08.64.91.35.81.3
41-50 years ago4.84.72.81.02.91.0
over 50 years ago9.56.413.92.013.61.9
total100.0.100.0.100.0.
SHless than 10 years ago..60.96.060.96.0
11-20 years ago..25.05.425.05.4
21-30 years ago..7.83.47.83.4
31-40 years ago......
41-50 years ago..4.72.74.72.7
over 50 years ago..1.61.61.61.6
total..100.0.100.0.
SOless than 10 years ago..59.63.659.33.6
11-20 years ago..19.92.919.82.9
21-30 years ago..12.92.512.92.5
31-40 years ago..2.71.22.71.2
41-50 years ago..2.71.22.71.2
over 50 years ago100.0.2.11.12.71.2
total100.0.100.0.100.0.
SZless than 10 years ago37.717.245.44.045.13.9
11-20 years ago12.611.816.93.016.62.9
21-30 years ago12.611.811.12.511.12.5
31-40 years ago12.611.86.52.06.82.0
41-50 years ago12.111.46.52.06.82.0
over 50 years ago12.611.813.62.813.62.7
total100.0.100.0.100.0.
TGless than 10 years ago..73.93.973.93.9
11-20 years ago..16.53.316.53.3
21-30 years ago..8.72.58.72.5
31-40 years ago......
41-50 years ago......
over 50 years ago..0.90.80.90.8
total..100.0.100.0.
TIless than 10 years ago5.22.913.61.412.91.3
11-20 years ago6.93.37.61.17.51.0
21-30 years ago12.14.39.61.29.81.1
31-40 years ago13.84.57.11.07.61.0
41-50 years ago13.84.57.71.18.21.0
over 50 years ago48.36.654.42.053.91.9
total100.0.100.0.100.0.
URless than 10 years ago34.810.040.15.938.75.1
11-20 years ago17.47.915.74.416.13.8
21-30 years ago..2.92.02.21.5
31-40 years ago21.78.614.24.216.13.8
41-50 years ago8.75.94.32.45.42.4
over 50 years ago17.47.922.85.021.54.3
total100.0.100.0.100.0.
VDless than 10 years ago24.17.949.32.248.02.1
11-20 years ago37.99.019.41.720.41.7
21-30 years ago17.27.012.11.412.41.4
31-40 years ago3.43.47.11.16.91.1
41-50 years ago6.94.73.50.83.60.8
over 50 years ago10.35.78.61.28.71.2
total100.0.100.0.100.0.
VSless than 10 years ago22.63.620.41.820.91.6
11-20 years ago13.93.011.91.412.31.3
21-30 years ago10.92.711.51.411.41.2
31-40 years ago9.52.59.71.39.71.2
41-50 years ago10.22.610.91.410.71.2
over 50 years ago32.84.035.72.135.11.9
total100.0.100.0.100.0.
ZGless than 10 years ago100.0.66.68.167.67.9
11-20 years ago..12.15.711.85.6
21-30 years ago..18.26.817.76.6
31-40 years ago......
41-50 years ago......
over 50 years ago..3.03.02.92.9
total100.0.100.0.100.0.
ZHless than 10 years ago..74.12.774.12.7
11-20 years ago..15.42.215.42.2
21-30 years ago..6.81.56.81.5
31-40 years ago..2.61.02.61.0
41-50 years ago..1.10.61.10.6
over 50 years ago......
total..100.0.100.0.
Switzerlandless than 10 years ago26.21.945.30.643.70.6
11-20 years ago17.71.615.70.515.80.4
21-30 years ago12.51.411.20.411.30.4
31-40 years ago10.91.35.90.36.30.3
41-50 years ago7.31.14.30.34.60.3
over 50 years ago25.31.817.70.518.30.4
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158713/145092

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %
AGless than 10 years ago..39.0439.04
11-20 years ago..5.0185.018
21-30 years ago..2.2282.228
31-40 years ago..1.5351.535
41-50 years ago..0.7500.750
over 50 years ago..0.6580.658
total..49.0249.02
AIless than 10 years ago..2.1222.122
11-20 years ago0.21000.8420.938
21-30 years ago0.21000.9381.135
31-40 years ago0.3700.5560.842
41-50 years ago......
over 50 years ago..0.5580.558
total0.6484.8105.47
ARless than 10 years ago..3.6163.616
11-20 years ago0.21001.8272.026
21-30 years ago0.21001.5321.730
31-40 years ago..0.3700.370
41-50 years ago..0.3700.370
over 50 years ago..0.3700.370
total0.3707.968.26
BEless than 10 years ago5.31885.7491.03
11-20 years ago3.92125.2829.17
21-30 years ago1.83116.71018.59
31-40 years ago1.2389.61310.812
41-50 years ago0.9455.2186.017
over 50 years ago1.14114.01115.110
total14.211156.42170.61
BL/BSless than 10 years ago..11.5911.59
11-20 years ago..4.0214.021
21-30 years ago..3.2233.223
31-40 years ago..0.6580.658
41-50 years ago..0.8490.849
over 50 years ago..0.4700.470
total..20.5420.54
FRless than 10 years ago0.75024.0624.76
11-20 years ago0.21006.2166.416
21-30 years ago0.21003.7223.821
31-40 years ago0.21002.2282.427
41-50 years ago..1.8311.831
over 50 years ago..3.1233.123
total1.33741.0342.23
GEless than 10 years ago..1.8301.830
11-20 years ago..0.8570.857
21-30 years ago......
31-40 years ago......
41-50 years ago..0.31000.3100
over 50 years ago..0.31000.3100
total..3.1133.113
GLless than 10 years ago1.5324.3185.915
11-20 years ago0.3702.6242.923
21-30 years ago0.3701.7302.128
31-40 years ago0.5570.5571.040
41-50 years ago0.3700.9441.237
over 50 years ago0.9442.1282.923
total4.01912.0916.06
GRless than 10 years ago5.31837.3642.66
11-20 years ago4.42027.1831.57
21-30 years ago3.52221.8925.38
31-40 years ago2.32811.11213.411
41-50 years ago0.7507.3158.014
over 50 years ago7.41544.3651.75
total23.58149.02172.41
JUless than 10 years ago0.210017.9718.17
11-20 years ago0.21005.0185.217
21-30 years ago0.4715.5175.916
31-40 years ago0.21001.8312.030
41-50 years ago..0.5570.557
over 50 years ago..1.8311.831
total0.94432.5333.43
LUless than 10 years ago0.210022.6622.86
11-20 years ago..6.8156.815
21-30 years ago0.21006.1166.315
31-40 years ago0.21002.4262.525
41-50 years ago..0.5580.558
over 50 years ago..1.9301.930
total0.55840.4340.93
NEless than 10 years ago0.55720.6521.25
11-20 years ago0.4704.5194.818
21-30 years ago..2.3272.327
31-40 years ago..0.21000.2100
41-50 years ago......
over 50 years ago0.21000.5570.750
total1.14028.2329.23
NWless than 10 years ago0.6562.6243.120
11-20 years ago0.21001.9292.127
21-30 years ago0.21000.6560.848
31-40 years ago......
41-50 years ago0.2100..0.2100
over 50 years ago0.4701.4351.830
total1.6326.5108.06
OWless than 10 years ago0.9449.0119.910
11-20 years ago..2.0292.029
21-30 years ago..1.3371.337
31-40 years ago0.21001.1401.337
41-50 years ago0.21000.7490.944
over 50 years ago0.4703.8204.119
total1.63217.8519.44
SGless than 10 years ago1.23724.4725.67
11-20 years ago0.7509.61310.312
21-30 years ago0.5585.6176.116
31-40 years ago0.7502.5263.223
41-50 years ago0.21001.4351.633
over 50 years ago0.4717.0157.415
total3.72150.4354.13
SHless than 10 years ago..7.6117.611
11-20 years ago..3.1223.122
21-30 years ago..1.0431.043
31-40 years ago......
41-50 years ago..0.6570.657
over 50 years ago..0.21000.2100
total..12.4412.44
SOless than 10 years ago..19.4719.47
11-20 years ago..6.5156.515
21-30 years ago..4.2194.219
31-40 years ago..0.9440.944
41-50 years ago..0.9440.944
over 50 years ago0.21000.7500.944
total0.210032.6332.83
SZless than 10 years ago0.55712.81013.39
11-20 years ago0.21004.7184.918
21-30 years ago0.21003.1233.322
31-40 years ago0.21001.8312.029
41-50 years ago0.21001.8312.029
over 50 years ago0.21003.8214.020
total1.53528.1429.64
TGless than 10 years ago..15.7615.76
11-20 years ago..3.5203.520
21-30 years ago..1.9291.929
31-40 years ago......
41-50 years ago......
over 50 years ago..0.21000.2100
total..21.3421.34
TIless than 10 years ago0.55815.21015.710
11-20 years ago0.7508.4149.113
21-30 years ago1.23810.71212.012
31-40 years ago1.4357.9159.313
41-50 years ago1.4358.61410.013
over 50 years ago5.01960.8465.74
total10.313111.72121.92
URless than 10 years ago1.5345.2176.715
11-20 years ago0.7492.0292.825
21-30 years ago..0.4700.470
31-40 years ago0.9441.9312.825
41-50 years ago0.4700.6570.944
over 50 years ago0.7493.0243.721
total4.31913.1917.46
VDless than 10 years ago1.33846.6547.85
11-20 years ago2.03018.3920.39
21-30 years ago0.94511.41212.311
31-40 years ago0.21006.7166.916
41-50 years ago0.4713.3233.622
over 50 years ago0.5588.1148.714
total5.31894.4299.72
VSless than 10 years ago5.31817.9923.28
11-20 years ago3.22310.41213.711
21-30 years ago2.62610.11312.611
31-40 years ago2.2288.51410.712
41-50 years ago2.4279.61311.911
over 50 years ago7.71431.4739.16
total23.4887.93111.32
ZGless than 10 years ago0.21003.9144.113
11-20 years ago..0.7480.748
21-30 years ago..1.1391.139
31-40 years ago......
41-50 years ago......
over 50 years ago..0.21000.2100
total0.21005.876.07
ZHless than 10 years ago..36.7436.74
11-20 years ago..7.6157.615
21-30 years ago..3.4233.423
31-40 years ago..1.3371.337
41-50 years ago..0.6580.658
over 50 years ago......
total..49.6249.62
Switzerlandless than 10 years ago25.88487.41513.11
11-20 years ago17.410168.73186.13
21-30 years ago12.312120.44132.73
31-40 years ago10.71363.2573.95
41-50 years ago7.21646.3653.56
over 50 years ago24.98190.33215.22
total98.241076.311174.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158714/145093

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %±
inside perimeterless than 10 years ago28.09.0..42.75.727.32.35.02.426.11.9
11-20 years ago31.99.3..21.34.718.02.08.63.117.71.6
21-30 years ago20.08.0100.0.10.73.611.71.714.84.012.51.4
31-40 years ago4.03.9..12.03.811.11.611.13.510.91.3
41-50 years ago4.03.9..4.02.37.41.411.13.57.31.1
over 50 years ago12.06.5..9.33.424.42.249.45.625.41.8
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago56.61.574.01.250.71.527.31.112.51.245.20.6
11-20 years ago18.11.214.51.017.31.117.50.97.71.015.70.5
21-30 years ago14.01.16.80.711.81.012.80.810.41.111.20.4
31-40 years ago4.50.62.00.46.60.78.60.77.30.95.90.3
41-50 years ago2.40.51.10.33.50.57.00.67.50.94.30.3
over 50 years ago4.40.61.60.310.20.926.81.154.71.817.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago56.01.574.01.250.21.427.31.011.71.143.60.6
11-20 years ago18.41.214.51.017.51.117.60.87.80.915.80.4
21-30 years ago14.11.06.90.711.70.912.60.710.81.111.40.4
31-40 years ago4.50.62.00.46.90.79.00.67.60.96.30.3
41-50 years ago2.40.51.10.33.50.57.10.67.80.94.50.3
over 50 years ago4.50.61.60.310.20.926.41.054.21.718.30.4
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158715/145094

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.338..5.71717.9100.75025.68
11-20 years ago1.535..2.92511.8121.23817.410
21-30 years ago0.9450.21001.4357.6152.12912.312
31-40 years ago0.2100..1.6337.3151.63310.713
41-50 years ago0.2100..0.5584.9191.6337.216
over 50 years ago0.558..1.33816.0107.11624.98
total4.6200.210013.41165.4514.31198.04
outside perimeterless than 10 years ago111.33170.12103.9383.2417.110485.71
11-20 years ago35.6733.3735.5753.4510.513168.33
21-30 years ago27.5815.71024.2839.1614.211120.84
31-40 years ago8.9144.61913.41126.2810.01363.25
41-50 years ago4.7192.5277.21621.4910.31346.16
over 50 years ago8.6143.62221.0982.0475.14190.23
total196.61229.81205.21305.41137.221074.31
totalless than 10 years ago112.63170.12109.73101.1417.89511.31
11-20 years ago37.0633.3738.3665.2511.812185.73
21-30 years ago28.5715.91025.6846.8616.410133.13
31-40 years ago9.1144.61915.11133.5711.51273.95
41-50 years ago4.9192.5277.71526.2811.91253.26
over 50 years ago9.1143.62222.2998.0482.23215.12
total201.21230.01218.61370.81151.621172.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158716/145095
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