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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes) %± %± %±
Western Jura0-20%..1.20.51.20.5
21-40%12.912.01.70.61.90.7
41-60%..7.91.37.71.3
61-80%12.411.726.22.126.02.1
over 80%74.615.563.02.463.22.3
total100.0.100.0.100.0.
Eastern Jura0-20%..2.51.42.51.4
21-40%..0.80.80.80.8
41-60%..4.11.84.11.8
61-80%100.0.13.23.114.03.2
over 80%..79.33.778.73.7
total100.0.100.0.100.0.
Western Plateau0-20%..2.61.52.61.5
21-40%..1.71.21.71.2
41-60%..10.22.810.22.8
61-80%..25.44.025.44.0
over 80%..60.14.560.14.5
total..100.0.100.0.
Central Plateau0-20%..1.40.81.40.8
21-40%..0.90.60.90.6
41-60%..5.91.65.91.6
61-80%..23.22.923.12.8
over 80%100.0.68.63.168.83.1
total100.0.100.0.100.0.
Eastern Plateau0-20%..0.60.50.60.5
21-40%..2.90.92.90.9
41-60%..3.81.13.81.1
61-80%..19.22.219.22.2
over 80%..73.52.573.52.5
total..100.0.100.0.
Western Pre-Alps0-20%..0.80.80.80.8
21-40%..8.32.58.22.5
41-60%..21.73.821.53.7
61-80%100.0.28.44.129.04.1
over 80%..40.94.540.54.5
total100.0.100.0.100.0.
Central Pre-Alps0-20%..1.10.61.10.6
21-40%..2.20.92.20.9
41-60%..14.22.114.02.1
61-80%75.021.739.23.039.73.0
over 80%25.021.743.33.043.03.0
total100.0.100.0.100.0.
Eastern Pre-Alps0-20%..1.00.71.00.7
21-40%..3.41.33.41.3
41-60%..11.82.311.62.2
61-80%33.327.325.13.125.23.0
over 80%66.727.358.63.558.73.4
total100.0.100.0.100.0.
Northwestern Alps0-20%..3.11.42.91.3
21-40%..6.92.06.41.9
41-60%7.77.416.32.915.72.8
61-80%23.111.734.63.833.73.6
over 80%69.212.839.03.941.33.8
total100.0.100.0.100.0.
Central Alps0-20%9.18.7..1.31.3
21-40%9.18.77.73.37.93.1
41-60%..25.45.321.94.7
61-80%27.313.525.35.325.65.0
over 80%54.515.141.66.043.45.6
total100.0.100.0.100.0.
Northeastern Alps0-20%..1.21.21.11.1
21-40%..10.03.49.03.0
41-60%11.110.517.54.316.94.0
61-80%..27.55.024.74.6
over 80%88.910.443.75.648.35.3
total100.0.100.0.100.0.
Southwestern Alps0-20%..1.00.60.90.5
21-40%8.65.87.81.67.91.5
41-60%29.19.328.92.628.92.5
61-80%41.610.133.72.834.32.7
over 80%20.88.328.52.628.02.5
total100.0.100.0.100.0.
Southeastern Alps0-20%..1.30.61.20.5
21-40%..10.71.610.51.5
41-60%44.416.634.22.434.42.4
61-80%22.213.935.52.435.22.4
over 80%33.315.718.32.018.71.9
total100.0.100.0.100.0.
Southern Alps0-20%3.13.11.10.51.20.5
21-40%3.13.15.31.15.11.1
41-60%9.55.215.01.814.61.7
61-80%18.76.928.42.327.62.2
over 80%65.58.450.32.651.52.5
total100.0.100.0.100.0.
Switzerland0-20%1.71.21.30.21.30.2
21-40%4.31.94.80.44.80.4
41-60%13.73.215.60.615.60.6
61-80%26.74.128.40.828.30.8
over 80%53.54.649.90.850.00.8
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164879/151261

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %
Western Jura0-20%..1.8451.845
21-40%0.41002.5382.935
41-60%..11.81711.817
61-80%0.410039.3839.78
over 80%2.14194.5496.74
total2.935150.02152.82
Eastern Jura0-20%..1.2571.257
21-40%..0.41000.4100
41-60%..2.0442.044
61-80%0.41006.3236.723
over 80%..37.9537.95
total0.410047.8248.22
Western Plateau0-20%..1.2571.257
21-40%..0.8700.870
41-60%..4.9284.928
61-80%..12.31612.316
over 80%..29.1829.18
total..48.4348.43
Central Plateau0-20%..0.9570.957
21-40%..0.6710.671
41-60%..4.0274.027
61-80%..15.91315.913
over 80%0.310046.9547.25
total0.310068.4268.72
Eastern Plateau0-20%..0.7710.771
21-40%..3.2333.233
41-60%..4.3284.328
61-80%..21.41221.412
over 80%..82.2482.24
total..111.92111.92
Western Pre-Alps0-20%..0.41000.4100
21-40%..3.7313.731
41-60%..9.6189.618
61-80%0.410012.61513.015
over 80%..18.11218.112
total0.410044.4444.84
Central Pre-Alps0-20%..1.1581.158
21-40%..2.2412.241
41-60%..13.61513.615
61-80%1.15837.6838.78
over 80%0.410041.6741.97
total1.45096.1297.52
Eastern Pre-Alps0-20%..0.7710.771
21-40%..2.5372.537
41-60%..8.6208.620
61-80%0.410018.21218.612
over 80%0.77142.5643.26
total1.15772.5373.63
Northwestern Alps0-20%..1.8441.844
21-40%..3.9293.929
41-60%0.41009.3189.618
61-80%1.15719.71220.711
over 80%3.23322.21125.410
total4.62756.8461.54
Central Alps0-20%0.3100..0.3100
21-40%0.31001.8442.140
41-60%..5.9235.923
61-80%1.0575.9236.920
over 80%2.1409.71611.714
total3.82923.2827.07
Northeastern Alps0-20%..0.41000.4100
21-40%..2.9352.935
41-60%0.41005.0265.425
61-80%..7.9197.919
over 80%2.93412.51415.412
total3.23228.7731.96
Southwestern Alps0-20%..1.0581.058
21-40%0.7717.9208.619
41-60%2.43829.21031.69
61-80%3.43134.0937.48
over 80%1.74428.81030.59
total8.220100.93109.13
Southeastern Alps0-20%..1.7451.745
21-40%..14.71514.715
41-60%1.45047.0748.47
61-80%0.77148.9749.67
over 80%1.15825.21126.311
total3.233137.52140.62
Southern Alps0-20%0.41001.4501.845
21-40%0.41007.1227.421
41-60%1.15820.21321.312
61-80%2.14138.2940.38
over 80%7.42167.6675.05
total11.417134.43145.72
Switzerland0-20%0.77114.31615.015
21-40%1.84554.2855.98
41-60%5.625175.44181.04
61-80%10.918318.13329.03
over 80%21.912558.82580.72
total40.991120.811161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164880/151262

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %± %±
inside perimeterroad and skidding track22.213.9100.0.7.54.220.88.312.511.76.14.212.93.1
road and skidding road33.315.7..7.54.28.35.6..3.03.07.82.5
road and cable line....52.57.920.88.312.511.721.37.129.34.2
road and flight path22.413.9..25.06.850.110.275.015.360.58.543.14.6
no access intended22.213.9..7.54.2....9.15.07.02.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track51.22.269.01.719.11.318.02.422.82.33.91.034.40.8
road and skidding road37.62.119.01.510.71.05.71.45.61.38.51.416.00.6
road and cable line5.91.03.90.742.71.633.72.947.42.828.82.325.60.7
road and flight path0.20.20.10.19.10.938.73.023.82.444.82.513.80.6
no access intended5.11.08.01.018.31.33.81.20.30.314.11.810.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track50.72.269.11.718.71.318.22.322.62.34.01.033.70.7
road and skidding road37.52.119.01.510.61.06.01.45.51.38.01.315.70.6
road and cable line5.81.03.90.743.11.632.62.846.62.828.22.225.70.7
road and flight path0.60.30.10.19.81.039.62.925.12.446.02.414.80.6
no access intended5.41.08.01.017.91.23.51.10.30.313.71.710.10.5
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 #164881/151263

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track0.7710.7711.1581.7440.41000.7715.326
road and skidding road1.158..1.1580.771..0.41003.233
road and cable line....7.4221.7440.41002.53812.017
road and flight path0.771..3.5314.1282.1417.12217.614
no access intended0.771..1.158....1.1582.935
total3.2330.77114.2168.2202.83511.81741.09
outside perimeterroad and skidding track97.75176.8363.3716.11425.8115.425385.02
road and skidding road71.7648.8835.5105.1256.42311.717179.24
road and cable line11.2179.919141.1430.1953.6639.88285.83
road and flight path0.41000.410030.21034.6827.01061.96154.34
no access intended9.71920.51360.673.4310.410019.413114.15
total190.61256.41330.7189.43113.13138.231118.41
totalroad and skidding track98.44177.5364.4717.81326.1116.124390.32
road and skidding road72.8648.8836.695.8246.42312.017182.44
road and cable line11.2179.919148.6431.8954.0642.38297.83
road and flight path1.1580.410033.71038.7829.11069.06171.94
no access intended10.41820.51361.773.4310.410020.512116.95
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164882/151264

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonconcept of transportation system %± %± %±
AGroad and skidding track..61.54.461.54.4
road and skidding road..32.04.232.04.2
road and cable line......
road and flight path......
no access intended..6.62.26.62.2
total..100.0.100.0.
AIroad and skidding track..55.512.655.512.6
road and skidding road..19.810.319.810.3
road and cable line..18.59.918.59.9
road and flight path..6.26.16.26.1
no access intended......
total..100.0.100.0.
ARroad and skidding track..64.09.664.09.6
road and skidding road..16.07.516.07.5
road and cable line..20.08.220.08.2
road and flight path......
no access intended......
total..100.0.100.0.
BEroad and skidding track17.69.237.52.236.82.2
road and skidding road11.77.821.31.921.01.8
road and cable line41.011.930.12.130.52.1
road and flight path23.810.41.30.52.00.6
no access intended5.95.79.81.49.71.3
total100.0.100.0.100.0.
BL/BSroad and skidding track100.0.56.27.057.16.9
road and skidding road..35.86.835.16.7
road and cable line..6.03.45.93.3
road and flight path......
no access intended..2.02.02.02.0
total100.0.100.0.100.0.
FRroad and skidding track..43.04.643.04.6
road and skidding road..12.33.112.33.1
road and cable line..27.24.227.24.2
road and flight path......
no access intended..17.53.617.53.6
total..100.0.100.0.
GEroad and skidding track..100.0.100.0.
road and skidding road......
road and cable line......
road and flight path......
no access intended......
total..100.0.100.0.
GLroad and skidding track......
road and skidding road......
road and cable line71.417.263.37.964.67.2
road and flight path14.313.310.65.011.14.7
no access intended14.313.326.17.224.36.4
total100.0.100.0.100.0.
GRroad and skidding track5.35.122.71.922.01.9
road and skidding road..4.71.04.61.0
road and cable line26.510.248.22.347.32.3
road and flight path57.811.322.51.923.91.9
no access intended10.57.01.90.62.30.7
total100.0.100.0.100.0.
JUroad and skidding track..45.35.543.75.3
road and skidding road66.727.348.75.549.45.4
road and cable line..1.21.21.21.2
road and flight path......
no access intended33.327.44.82.35.82.5
total100.0.100.0.100.0.
LUroad and skidding track..24.33.824.33.8
road and skidding road..10.22.710.22.7
road and cable line..9.42.69.42.6
road and flight path......
no access intended..56.14.456.14.4
total..100.0.100.0.
NEroad and skidding track..51.75.451.75.4
road and skidding road..42.65.342.65.3
road and cable line......
road and flight path......
no access intended..5.72.55.72.5
total..100.0.100.0.
NWroad and skidding track..5.35.25.05.0
road and skidding road..10.57.210.06.9
road and cable line100.0.31.610.935.010.9
road and flight path..15.88.515.08.2
no access intended..36.811.335.010.9
total100.0.100.0.100.0.
OWroad and skidding track..2.02.02.02.0
road and skidding road50.035.78.24.09.84.2
road and cable line..53.07.250.97.1
road and flight path50.035.718.45.619.65.6
no access intended..18.45.617.75.4
total100.0.100.0.100.0.
SGroad and skidding track50.025.138.34.038.74.0
road and skidding road..18.53.218.03.1
road and cable line..26.73.726.03.6
road and flight path50.025.115.13.016.03.0
no access intended..1.41.01.30.9
total100.0.100.0.100.0.
SHroad and skidding track..83.36.083.36.0
road and skidding road..13.95.813.95.8
road and cable line..2.82.82.82.8
road and flight path......
no access intended......
total..100.0.100.0.
SOroad and skidding track..57.35.556.05.4
road and skidding road50.035.530.55.131.05.1
road and cable line..9.83.39.53.2
road and flight path......
no access intended50.035.52.41.73.62.0
total100.0.100.0.100.0.
SZroad and skidding track..4.02.33.82.2
road and skidding road..14.74.114.14.0
road and cable line100.0.33.35.535.95.5
road and flight path..4.02.33.82.2
no access intended..44.05.842.35.6
total100.0.100.0.100.0.
TGroad and skidding track..84.64.384.64.3
road and skidding road..14.04.114.04.1
road and cable line..1.41.41.41.4
road and flight path......
no access intended......
total..100.0.100.0.
TIroad and skidding track9.16.12.30.92.70.9
road and skidding road4.54.49.71.79.41.6
road and cable line13.67.322.52.421.92.3
road and flight path68.29.950.32.951.52.8
no access intended4.54.415.32.114.51.9
total100.0.100.0.100.0.
URroad and skidding track11.110.511.34.811.34.4
road and skidding road..9.44.57.83.8
road and cable line44.416.739.87.340.66.7
road and flight path33.315.824.16.425.76.0
no access intended11.110.515.45.414.74.8
total100.0.100.0.100.0.
VDroad and skidding track..47.03.146.73.1
road and skidding road..20.12.520.02.5
road and cable line50.035.415.92.316.12.3
road and flight path50.035.46.11.56.51.5
no access intended..10.81.910.81.9
total100.0.100.0.100.0.
VSroad and skidding track20.88.318.72.318.92.2
road and skidding road8.35.66.81.56.91.4
road and cable line20.88.335.42.834.32.7
road and flight path50.110.235.72.836.82.7
no access intended..3.41.13.11.0
total100.0.100.0.100.0.
ZGroad and skidding track..50.013.850.013.8
road and skidding road..14.39.714.39.7
road and cable line..35.713.235.713.2
road and flight path......
no access intended......
total..100.0.100.0.
ZHroad and skidding track..74.53.674.53.6
road and skidding road..12.42.712.42.7
road and cable line..12.42.712.42.7
road and flight path......
no access intended..0.70.70.70.7
total..100.0.100.0.
Switzerlandroad and skidding track12.83.134.50.833.80.8
road and skidding road7.92.516.20.615.90.6
road and cable line29.34.225.50.725.60.7
road and flight path42.94.613.80.614.80.6
no access intended7.02.410.10.59.90.5
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164883/151265

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonconcept of transportation system1000 ha± %1000 ha± %1000 ha± %
AGroad and skidding track..30.2730.27
road and skidding road..15.71315.713
road and cable line......
road and flight path......
no access intended..3.2343.234
total..49.1249.12
AIroad and skidding track..2.9242.924
road and skidding road..1.0571.057
road and cable line..1.0541.054
road and flight path..0.31000.3100
no access intended......
total..5.2125.212
ARroad and skidding track..5.1165.116
road and skidding road..1.3471.347
road and cable line..1.6411.641
road and flight path......
no access intended......
total..8.058.05
BEroad and skidding track1.05861.3662.36
road and skidding road0.77134.9935.69
road and cable line2.43849.3751.77
road and flight path1.4502.1413.431
no access intended0.310016.11416.514
total5.824163.72169.52
BL/BSroad and skidding track0.410011.41311.813
road and skidding road..7.3207.320
road and cable line..1.2571.257
road and flight path......
no access intended..0.41000.4100
total0.410020.3520.75
FRroad and skidding track..18.31118.311
road and skidding road..5.2255.225
road and cable line..11.61611.616
road and flight path......
no access intended..7.5217.521
total..42.6342.63
GEroad and skidding track..3.1203.120
road and skidding road......
road and cable line......
road and flight path......
no access intended......
total..3.1203.120
GLroad and skidding track......
road and skidding road......
road and cable line1.9439.21611.213
road and flight path0.41001.5491.943
no access intended0.41003.8294.228
total2.73614.61017.37
GRroad and skidding track0.310036.7937.19
road and skidding road..7.7217.721
road and cable line1.84578.1579.85
road and flight path3.83036.4940.38
no access intended0.7713.1333.830
total6.623162.02168.62
JUroad and skidding track..14.81214.812
road and skidding road0.87015.91216.711
road and cable line..0.41000.4100
road and flight path......
no access intended0.41001.6491.944
total1.25732.7333.93
LUroad and skidding track..9.7169.716
road and skidding road..4.1264.126
road and cable line..3.8283.828
road and flight path......
no access intended..22.5922.59
total..40.0340.03
NEroad and skidding track..14.61114.611
road and skidding road..12.01312.013
road and cable line......
road and flight path......
no access intended..1.6441.644
total..28.2428.24
NWroad and skidding track..0.41000.4100
road and skidding road..0.8690.869
road and cable line0.41002.3362.732
road and flight path..1.2551.255
no access intended..2.7322.732
total0.41007.3107.78
OWroad and skidding track..0.41000.4100
road and skidding road0.41001.5491.943
road and cable line..9.7159.715
road and flight path0.41003.4313.729
no access intended..3.4313.431
total0.77018.3519.04
SGroad and skidding track0.77020.21121.011
road and skidding road..9.8189.818
road and cable line..14.11414.114
road and flight path0.7708.0208.719
no access intended..0.7700.770
total1.45052.8454.24
SHroad and skidding track..10.7810.78
road and skidding road..1.8421.842
road and cable line..0.41000.4100
road and flight path......
no access intended......
total..12.8312.83
SOroad and skidding track..17.81017.810
road and skidding road0.41009.5179.817
road and cable line..3.0343.034
road and flight path......
no access intended0.41000.8701.157
total0.87031.0431.83
SZroad and skidding track..1.1571.157
road and skidding road..4.0294.029
road and cable line1.1579.01710.116
road and flight path..1.1571.157
no access intended..12.01412.014
total1.15727.2528.35
TGroad and skidding track..18.0618.06
road and skidding road..3.0303.030
road and cable line..0.31000.3100
road and flight path......
no access intended......
total..21.3321.33
TIroad and skidding track0.7712.5373.233
road and skidding road0.410010.71811.117
road and cable line1.15824.71125.711
road and flight path5.42555.2660.56
no access intended0.410016.81417.114
total7.921109.83117.72
URroad and skidding track0.31001.7442.040
road and skidding road..1.4501.450
road and cable line1.3496.0217.318
road and flight path1.0573.6284.624
no access intended0.31002.3362.634
total3.03115.01118.09
VDroad and skidding track..46.1746.17
road and skidding road..19.71319.713
road and cable line0.410015.61416.014
road and flight path0.41006.0246.424
no access intended..10.61810.618
total0.87198.1298.92
VSroad and skidding track1.74418.91320.612
road and skidding road0.7716.9227.521
road and cable line1.74435.7837.48
road and flight path4.12936.0840.18
no access intended..3.4313.431
total8.220100.93109.13
ZGroad and skidding track..3.0283.028
road and skidding road..0.9680.968
road and cable line..2.1372.137
road and flight path......
no access intended......
total..6.066.06
ZHroad and skidding track..38.1538.15
road and skidding road..6.4226.422
road and cable line..6.3226.322
road and flight path......
no access intended..0.41000.4100
total..51.1251.12
Switzerlandroad and skidding track5.326387.12392.32
road and skidding road3.333181.24184.54
road and cable line12.017285.43297.43
road and flight path17.614154.74172.34
no access intended2.935112.75115.65
total41.091121.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164884/151266

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %±
inside perimeterroad and skidding track22.213.9100.0.25.015.312.14.06.24.313.03.1
road and skidding road33.415.7..25.015.34.52.63.13.17.92.5
road and cable line....25.015.339.46.018.96.929.14.2
road and flight path22.113.8..25.015.339.46.062.48.643.14.6
no access intended22.213.9....4.52.69.45.27.02.4
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track51.82.271.01.824.91.818.61.22.90.934.50.8
road and skidding road36.82.118.11.515.71.56.20.88.41.416.10.6
road and cable line5.21.03.70.732.81.945.51.629.02.325.40.7
road and flight path0.20.20.20.26.41.022.91.345.42.613.80.6
no access intended6.11.07.11.020.11.76.90.814.41.810.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track51.32.171.01.824.91.818.21.23.20.933.70.7
road and skidding road36.72.118.11.515.91.56.10.78.01.315.80.6
road and cable line5.10.93.70.732.71.945.11.528.22.225.50.7
road and flight path0.50.30.20.26.71.023.91.346.72.514.80.6
no access intended6.41.07.11.019.91.66.70.814.01.710.10.5
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 #164885/151267

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track0.7710.41000.7712.8350.7715.326
road and skidding road1.158..0.7711.0580.41003.233
road and cable line....0.7719.0192.14111.817
road and flight path0.771..0.7719.0197.12217.514
no access intended0.771....1.0581.1582.835
total3.3330.41002.93522.81211.41740.79
outside perimeterroad and skidding track102.24162.4353.0763.873.930385.32
road and skidding road72.6641.5833.51021.21311.317180.04
road and cable line10.2188.42069.96156.5438.98284.03
road and flight path0.41000.410013.71678.8660.96154.24
no access intended12.01716.21442.9823.71219.313114.15
total197.51228.81213.02343.92134.431117.61
totalroad and skidding track102.94162.7353.7766.674.627390.52
road and skidding road73.7641.5834.21022.21211.617183.34
road and cable line10.2188.42070.66165.5441.18295.83
road and flight path1.1580.410014.41587.8668.06171.74
no access intended12.81616.21442.9824.71220.412117.05
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164886/151268

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %± %±
inside perimeterroad and skidding track30.014.55.65.413.07.020.88.311.110.56.24.312.93.1
road and skidding road30.014.516.78.8..8.35.6..3.13.17.82.5
road and cable line..50.011.852.210.420.88.322.213.918.96.929.34.2
road and flight path20.112.722.29.826.19.250.110.266.715.762.48.643.14.6
no access intended20.012.65.65.48.75.9....9.45.26.92.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track62.31.416.11.625.02.318.72.325.92.22.90.934.50.8
road and skidding road26.61.312.61.412.81.86.81.55.11.18.41.416.00.6
road and cable line4.40.642.62.135.92.635.42.846.72.529.02.325.50.7
road and flight path0.20.16.01.011.51.735.72.822.12.145.42.613.80.6
no access intended6.60.722.71.814.91.93.41.10.30.314.41.810.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track62.01.415.81.524.22.218.92.225.52.23.20.933.70.7
road and skidding road26.61.312.71.412.01.76.91.45.01.18.01.315.70.6
road and cable line4.30.642.82.136.92.534.32.746.12.528.22.225.60.7
road and flight path0.30.26.51.012.41.736.82.723.12.146.72.514.80.6
no access intended6.70.722.11.714.51.83.11.00.20.214.01.710.10.5
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 #164887/151269

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track1.1580.41001.0581.7440.41000.7715.226
road and skidding road1.1581.158..0.771..0.41003.233
road and cable line..3.2334.1281.7440.7712.14111.917
road and flight path0.7711.4502.1414.1292.1417.12217.614
no access intended0.7710.41000.771....1.1582.835
total3.6326.5237.9208.2203.23311.41740.89
outside perimeterroad and skidding track265.4231.71030.41018.91335.693.930385.92
road and skidding road113.4524.91115.6146.9227.02211.317179.14
road and cable line18.61484.0543.7835.7864.2638.98285.13
road and flight path0.77111.91714.01536.0830.31060.96153.94
no access intended28.31144.7818.1133.4310.410019.313114.25
total426.41197.32121.73100.93137.52134.431118.11
totalroad and skidding track266.5232.11031.41020.61235.994.627391.12
road and skidding road114.5526.01115.6147.5217.02211.617182.34
road and cable line18.61487.3547.8737.4864.9641.18297.03
road and flight path1.45013.31616.01440.1832.4968.06171.44
no access intended29.01145.1818.8133.4310.410020.412117.15
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164888/151270

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionconcept of transportation system %± %± %±
Western Juraroad and skidding track12.411.749.32.448.62.4
road and skidding road37.317.137.62.437.62.3
road and cable line..5.71.15.61.1
road and flight path25.415.50.20.20.70.4
no access intended24.915.37.11.37.51.3
total100.0.100.0.100.0.
Eastern Juraroad and skidding track100.0.60.44.460.74.4
road and skidding road..33.84.333.54.3
road and cable line..3.31.63.31.6
road and flight path......
no access intended..2.51.42.51.4
total100.0.100.0.100.0.
Western Plateauroad and skidding track..72.74.172.74.1
road and skidding road..17.93.517.93.5
road and cable line..0.90.90.90.9
road and flight path......
no access intended..8.52.68.52.6
total..100.0.100.0.
Central Plateauroad and skidding track100.0.63.63.363.83.2
road and skidding road..19.52.719.42.7
road and cable line..3.61.33.61.3
road and flight path......
no access intended..13.22.313.22.3
total100.0.100.0.100.0.
Eastern Plateauroad and skidding track..75.42.475.42.4
road and skidding road..17.32.117.32.1
road and cable line..4.81.24.81.2
road and flight path..0.30.30.30.3
no access intended..2.20.82.20.8
total..100.0.100.0.
Western Pre-Alpsroad and skidding track..29.24.229.04.1
road and skidding road..7.52.47.42.4
road and cable line..43.34.543.04.5
road and flight path100.0.4.21.85.02.0
no access intended..15.83.315.73.3
total100.0.100.0.100.0.
Central Pre-Alpsroad and skidding track..13.82.113.62.1
road and skidding road50.025.018.72.419.12.4
road and cable line25.021.732.82.932.72.8
road and flight path25.021.75.21.45.51.4
no access intended..29.52.829.02.8
total100.0.100.0.100.0.
Eastern Pre-Alpsroad and skidding track66.727.336.93.437.43.4
road and skidding road..16.72.616.52.6
road and cable line33.327.326.63.126.73.1
road and flight path..9.42.09.22.0
no access intended..10.32.110.22.1
total100.0.100.0.100.0.
Northwestern Alpsroad and skidding track7.77.410.12.49.92.3
road and skidding road7.77.46.31.96.41.9
road and cable line61.513.558.43.958.73.8
road and flight path15.410.08.82.39.32.2
no access intended7.77.416.42.915.72.8
total100.0.100.0.100.0.
Central Alpsroad and skidding track9.18.77.53.37.73.1
road and skidding road..7.73.36.62.8
road and cable line54.515.138.66.040.95.6
road and flight path27.313.517.84.719.14.5
no access intended9.18.728.45.525.75.0
total100.0.100.0.100.0.
Northeastern Alpsroad and skidding track..8.83.27.92.9
road and skidding road..7.53.06.72.7
road and cable line55.616.657.55.657.35.3
road and flight path33.315.811.23.513.53.6
no access intended11.110.515.04.014.63.8
total100.0.100.0.100.0.
Southwestern Alpsroad and skidding track20.88.318.72.318.92.2
road and skidding road8.35.66.81.56.91.4
road and cable line20.88.335.42.834.32.7
road and flight path50.110.235.72.836.82.7
no access intended..3.41.13.11.0
total100.0.100.0.100.0.
Southeastern Alpsroad and skidding track11.110.525.92.225.52.2
road and skidding road..5.11.15.01.1
road and cable line22.213.946.72.546.12.5
road and flight path66.715.722.12.123.12.1
no access intended..0.30.30.20.2
total100.0.100.0.100.0.
Southern Alpsroad and skidding track6.24.32.90.93.20.9
road and skidding road3.13.18.41.48.01.3
road and cable line18.96.929.02.328.22.2
road and flight path62.48.645.42.646.72.5
no access intended9.45.214.41.814.01.7
total100.0.100.0.100.0.
Switzerlandroad and skidding track12.93.134.50.833.80.7
road and skidding road7.82.516.10.615.80.6
road and cable line29.34.225.50.725.60.7
road and flight path43.14.613.70.614.80.6
no access intended6.92.410.10.510.00.5
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164889/151271

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionconcept of transportation system1000 ha± %1000 ha± %1000 ha± %
Western Juraroad and skidding track0.410073.9574.35
road and skidding road1.15856.4757.56
road and cable line..8.6208.620
road and flight path0.7710.41001.158
no access intended0.77110.71811.417
total2.935150.02152.82
Eastern Juraroad and skidding track0.410028.9829.37
road and skidding road..16.21316.213
road and cable line..1.6491.649
road and flight path......
no access intended..1.2571.257
total0.410047.8248.22
Western Plateauroad and skidding track..35.2735.27
road and skidding road..8.7208.720
road and cable line..0.41000.4100
road and flight path......
no access intended..4.1304.130
total..48.4348.43
Central Plateauroad and skidding track0.310043.5643.86
road and skidding road..13.31413.314
road and cable line..2.5352.535
road and flight path......
no access intended..9.1189.118
total0.310068.4268.72
Eastern Plateauroad and skidding track..84.4484.44
road and skidding road..19.31319.313
road and cable line..5.4255.425
road and flight path..0.41000.4100
no access intended..2.5372.537
total..111.92111.92
Western Pre-Alpsroad and skidding track..13.01513.015
road and skidding road..3.3333.333
road and cable line..19.21119.211
road and flight path0.41001.9442.240
no access intended..7.0217.021
total0.410044.4444.84
Central Pre-Alpsroad and skidding track..13.31513.315
road and skidding road0.77117.91318.613
road and cable line0.410031.6931.99
road and flight path0.41005.0265.425
no access intended..28.31028.310
total1.45096.1297.52
Eastern Pre-Alpsroad and skidding track0.77126.81027.59
road and skidding road..12.11612.116
road and cable line0.410019.31219.612
road and flight path..6.8226.822
no access intended..7.5217.521
total1.15772.5373.63
Northwestern Alpsroad and skidding track0.41005.7246.123
road and skidding road0.41003.6313.930
road and cable line2.93533.2836.17
road and flight path0.7715.0265.724
no access intended0.41009.3199.718
total4.62756.8461.54
Central Alpsroad and skidding track0.31001.7442.140
road and skidding road..1.8441.844
road and cable line2.1409.01711.015
road and flight path1.0574.1275.224
no access intended0.31006.6216.921
total3.82923.2827.07
Northeastern Alpsroad and skidding track..2.5372.537
road and skidding road..2.1402.140
road and cable line1.84416.51218.311
road and flight path1.1573.2324.327
no access intended0.41004.3284.726
total3.23228.7731.96
Southwestern Alpsroad and skidding track1.74418.91320.612
road and skidding road0.7716.9227.521
road and cable line1.74435.7837.48
road and flight path4.12936.0840.18
no access intended..3.4313.431
total8.220100.93109.13
Southeastern Alpsroad and skidding track0.410035.6935.99
road and skidding road..7.0227.022
road and cable line0.77164.2664.96
road and flight path2.14130.31032.49
no access intended..0.41000.4100
total3.233137.52140.62
Southern Alpsroad and skidding track0.7713.9304.627
road and skidding road0.410011.31711.617
road and cable line2.14138.9841.18
road and flight path7.12260.9668.06
no access intended1.15819.31320.412
total11.417134.43145.72
Switzerlandroad and skidding track5.326387.22392.52
road and skidding road3.233179.94183.14
road and cable line12.017285.93297.93
road and flight path17.614154.04171.64
no access intended2.835113.75116.65
total40.991120.811161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164890/151272

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %± %±
inside perimeterskidder44.416.6100.0.20.06.329.19.312.511.712.15.722.43.9
forwarder......4.24.1....0.80.8
mobile tower yarder11.110.5..27.57.112.56.712.511.76.14.215.53.4
cable crane11.110.5..20.06.34.24.1..12.25.712.23.0
helicopter22.413.9..32.57.450.110.275.015.366.68.247.44.6
others11.110.5........3.03.01.71.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder61.62.158.81.836.01.623.82.619.42.210.51.639.80.8
forwarder29.92.036.01.84.00.63.41.17.51.52.60.815.90.6
mobile tower yarder5.51.03.70.721.31.322.22.622.52.312.11.713.60.6
cable crane0.90.40.60.321.21.37.31.625.62.415.51.811.60.5
helicopter0.40.30.30.217.21.242.53.124.72.456.32.518.10.6
others1.70.60.70.30.40.20.80.50.30.33.10.91.00.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder61.32.158.91.835.31.524.22.519.22.210.71.539.20.8
forwarder29.42.035.91.83.80.63.51.17.31.42.40.715.30.6
mobile tower yarder5.61.03.70.721.51.321.42.422.32.311.61.613.70.6
cable crane1.10.50.60.321.11.37.01.524.92.415.21.811.60.5
helicopter0.70.40.30.217.81.243.22.926.02.457.12.419.10.6
others1.90.60.70.30.40.20.70.50.30.33.10.81.10.2
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 #164891/151273

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder1.4500.7712.8352.4370.41001.4509.220
forwarder......0.3100....0.3100
mobile tower yarder0.4100..3.9301.0580.41000.7716.423
cable crane0.4100..2.8350.3100..1.4505.027
helicopter0.771..4.6284.1282.1417.82119.413
others0.4100........0.41000.771
total3.2330.77114.2168.2202.83511.81741.09
outside perimeterskidder117.54150.73119.0521.21221.91214.615444.82
forwarder56.9792.3513.2163.1338.5203.631177.54
mobile tower yarder10.4189.51970.3619.91225.41116.714152.34
cable crane1.8451.45070.066.52228.91021.412130.05
helicopter0.7710.77156.8738.0828.01077.85202.04
others3.2331.8451.4500.7710.41004.22911.717
total190.61256.41330.7189.43113.13138.231118.41
totalskidder118.94151.43121.9523.61122.31216.014454.02
forwarder56.9792.3513.2163.4318.5203.631177.94
mobile tower yarder10.8189.51974.2620.91225.81017.414158.64
cable crane2.2411.45072.866.82228.91022.812135.05
helicopter1.4500.77161.4742.1730.11085.75221.43
others3.6311.8451.4500.7710.41004.62812.417
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164892/151274

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonmain type of harvest %± %± %±
AGskidder..58.24.458.24.4
forwarder..37.74.437.74.4
mobile tower yarder..1.61.21.61.2
cable crane......
helicopter..0.80.80.80.8
others..1.61.21.61.2
total..100.0.100.0.
AIskidder..69.211.869.211.8
forwarder..6.26.16.26.1
mobile tower yarder..6.26.16.26.1
cable crane..6.26.16.26.1
helicopter..12.38.412.38.4
others......
total..100.0.100.0.
ARskidder..56.010.056.010.0
forwarder..24.08.724.08.7
mobile tower yarder..12.06.612.06.6
cable crane..8.05.58.05.5
helicopter......
others......
total..100.0.100.0.
BEskidder35.111.650.52.349.92.2
forwarder..14.61.614.11.6
mobile tower yarder29.311.015.91.716.41.7
cable crane5.95.712.51.512.31.5
helicopter29.711.16.31.17.11.2
others..0.20.20.20.2
total100.0.100.0.100.0.
BL/BSskidder100.0.53.87.154.77.0
forwarder..38.16.937.46.8
mobile tower yarder..6.03.45.93.3
cable crane..2.02.02.02.0
helicopter......
others......
total100.0.100.0.100.0.
FRskidder..51.84.751.84.7
forwarder..12.33.112.33.1
mobile tower yarder..20.23.820.23.8
cable crane..8.82.78.82.7
helicopter..6.12.36.12.3
others..0.80.80.80.8
total..100.0.100.0.
GEskidder......
forwarder..100.0.100.0.
mobile tower yarder......
cable crane......
helicopter......
others......
total..100.0.100.0.
GLskidder14.313.326.47.224.56.5
forwarder......
mobile tower yarder14.313.313.25.513.45.1
cable crane42.918.939.68.040.17.3
helicopter28.617.220.96.622.16.2
others......
total100.0.100.0.100.0.
GRskidder5.35.120.31.919.71.8
forwarder..6.21.16.01.1
mobile tower yarder15.88.422.21.921.91.9
cable crane10.77.225.82.025.22.0
helicopter68.310.725.52.027.12.0
others......
total100.0.100.0.100.0.
JUskidder33.327.479.94.478.24.4
forwarder..14.23.813.73.7
mobile tower yarder33.327.43.62.04.62.3
cable crane......
helicopter......
others33.327.42.41.73.52.0
total100.0.100.0.100.0.
LUskidder..56.04.456.04.4
forwarder..15.03.215.03.2
mobile tower yarder..14.13.114.13.1
cable crane..12.52.912.52.9
helicopter..2.41.32.41.3
others......
total..100.0.100.0.
NEskidder..92.02.992.02.9
forwarder..5.72.55.72.5
mobile tower yarder......
cable crane......
helicopter......
others..2.31.62.31.6
total..100.0.100.0.
NWskidder..36.811.335.010.9
forwarder......
mobile tower yarder..21.19.520.09.1
cable crane100.0.15.88.520.09.1
helicopter..26.310.325.09.9
others......
total100.0.100.0.100.0.
OWskidder50.035.720.45.821.65.8
forwarder..4.12.93.92.7
mobile tower yarder..24.56.223.66.0
cable crane..24.46.223.46.0
helicopter50.035.726.66.427.56.3
others......
total100.0.100.0.100.0.
SGskidder50.025.153.44.153.34.1
forwarder..4.11.64.01.6
mobile tower yarder..5.51.95.31.8
cable crane..18.53.218.03.1
helicopter50.025.117.83.218.73.2
others..0.70.70.70.7
total100.0.100.0.100.0.
SHskidder..13.95.813.95.8
forwarder..80.66.480.66.4
mobile tower yarder..2.82.82.82.8
cable crane......
helicopter......
others..2.82.82.82.8
total..100.0.100.0.
SOskidder50.035.541.55.541.75.4
forwarder..47.65.546.45.5
mobile tower yarder..8.53.18.33.0
cable crane50.035.5..1.21.2
helicopter......
others..2.41.72.41.7
total100.0.100.0.100.0.
SZskidder..26.75.125.75.0
forwarder..5.32.65.12.5
mobile tower yarder66.727.326.65.128.25.1
cable crane33.327.410.73.611.53.6
helicopter..28.05.226.95.1
others..2.71.92.61.8
total100.0.100.0.100.0.
TGskidder..51.95.951.95.9
forwarder..41.15.941.15.9
mobile tower yarder..1.41.41.41.4
cable crane......
helicopter......
others..5.62.75.62.7
total..100.0.100.0.
TIskidder18.28.210.11.710.61.7
forwarder..2.91.02.70.9
mobile tower yarder..7.81.57.31.4
cable crane9.16.114.02.013.71.9
helicopter68.29.961.32.861.82.7
others4.54.43.91.13.91.1
total100.0.100.0.100.0.
URskidder11.110.518.25.817.05.2
forwarder..2.22.21.81.8
mobile tower yarder33.315.813.25.016.55.1
cable crane11.110.526.66.624.15.9
helicopter44.416.737.37.238.56.6
others..2.52.52.12.1
total100.0.100.0.100.0.
VDskidder..42.13.141.83.1
forwarder..36.63.036.43.0
mobile tower yarder..10.81.910.81.9
cable crane50.035.43.51.13.81.2
helicopter50.035.46.91.67.21.6
others......
total100.0.100.0.100.0.
VSskidder29.19.325.82.626.12.5
forwarder4.24.14.11.24.11.1
mobile tower yarder12.56.721.82.421.12.3
cable crane4.24.18.51.68.21.5
helicopter50.110.239.12.839.92.8
others..0.70.50.60.4
total100.0.100.0.100.0.
ZGskidder..57.113.757.113.7
forwarder..7.17.17.17.1
mobile tower yarder..28.612.528.612.5
cable crane..7.17.17.17.1
helicopter......
others......
total..100.0.100.0.
ZHskidder..57.94.157.94.1
forwarder..30.33.830.33.8
mobile tower yarder..10.32.510.32.5
cable crane..1.41.01.41.0
helicopter......
others......
total..100.0.100.0.
Switzerlandskidder22.53.939.70.839.10.8
forwarder0.80.816.10.615.60.6
mobile tower yarder15.33.313.60.613.60.6
cable crane12.43.111.50.511.50.5
helicopter47.14.618.00.619.10.6
others1.81.31.00.21.10.2
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164893/151275

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonmain type of harvest1000 ha± %1000 ha± %1000 ha± %
AGskidder..28.6828.68
forwarder..18.51218.512
mobile tower yarder..0.8700.870
cable crane......
helicopter..0.41000.4100
others..0.8700.870
total..49.1249.12
AIskidder..3.6223.622
forwarder..0.31000.3100
mobile tower yarder..0.31000.3100
cable crane..0.31000.3100
helicopter..0.6690.669
others......
total..5.2125.212
ARskidder..4.5184.518
forwarder..1.9361.936
mobile tower yarder..1.0551.055
cable crane..0.6690.669
helicopter......
others......
total..8.058.05
BEskidder2.14182.6584.65
forwarder..23.91123.911
mobile tower yarder1.74526.01127.710
cable crane0.310020.51220.912
helicopter1.74510.31812.016
others..0.31000.3100
total5.824163.72169.52
BL/BSskidder0.410010.91411.314
forwarder..7.7197.719
mobile tower yarder..1.2571.257
cable crane..0.41000.4100
helicopter......
others......
total0.410020.3520.75
FRskidder..22.0922.09
forwarder..5.2255.225
mobile tower yarder..8.6198.619
cable crane..3.7303.730
helicopter..2.6372.637
others..0.41000.4100
total..42.6342.63
GEskidder......
forwarder..3.1203.120
mobile tower yarder......
cable crane......
helicopter......
others......
total..3.1203.120
GLskidder0.41003.9294.227
forwarder......
mobile tower yarder0.41001.9432.339
cable crane1.2575.8226.919
helicopter0.8703.0343.829
others......
total2.73614.61017.37
GRskidder0.310032.9933.29
forwarder..10.11810.118
mobile tower yarder1.05835.9937.09
cable crane0.77141.8842.58
helicopter4.52741.2845.88
others......
total6.623162.02168.62
JUskidder0.410026.1626.56
forwarder..4.6274.627
mobile tower yarder0.41001.2571.649
cable crane......
helicopter......
others0.41000.8701.257
total1.25732.7333.93
LUskidder..22.4922.49
forwarder..6.0226.022
mobile tower yarder..5.6225.622
cable crane..5.0245.024
helicopter..0.9570.957
others......
total..40.0340.03
NEskidder..25.9625.96
forwarder..1.6441.644
mobile tower yarder......
cable crane......
helicopter......
others..0.6700.670
total..28.2428.24
NWskidder..2.7322.732
forwarder......
mobile tower yarder..1.5461.546
cable crane0.41001.2551.546
helicopter..1.9401.940
others......
total0.41007.3107.78
OWskidder0.41003.7294.127
forwarder..0.7700.770
mobile tower yarder..4.5264.526
cable crane..4.5264.526
helicopter0.41004.9245.223
others......
total0.77018.3519.04
SGskidder0.77028.2928.99
forwarder..2.2402.240
mobile tower yarder..2.9352.935
cable crane..9.8189.818
helicopter0.7709.41810.118
others..0.41000.4100
total1.45052.8454.24
SHskidder..1.8421.842
forwarder..10.3910.39
mobile tower yarder..0.41000.4100
cable crane......
helicopter......
others..0.41000.4100
total..12.8312.83
SOskidder0.410012.91413.213
forwarder..14.81214.812
mobile tower yarder..2.6362.636
cable crane0.4100..0.4100
helicopter......
others..0.8700.870
total0.87031.0431.83
SZskidder..7.3207.320
forwarder..1.4491.449
mobile tower yarder0.7707.2208.018
cable crane0.41002.9343.332
helicopter..7.6207.620
others..0.7700.770
total1.15727.2528.35
TGskidder..11.01211.012
forwarder..8.7158.715
mobile tower yarder..0.31000.3100
cable crane......
helicopter......
others..1.2491.249
total..21.3321.33
TIskidder1.45011.11712.516
forwarder..3.2333.233
mobile tower yarder..8.5208.520
cable crane0.77115.41416.114
helicopter5.42567.3572.75
others0.41004.3294.627
total7.921109.83117.72
URskidder0.31002.7353.132
forwarder..0.31000.3100
mobile tower yarder1.0572.0393.031
cable crane0.31004.0274.326
helicopter1.3495.6216.919
others..0.41000.4100
total3.03115.01118.09
VDskidder..41.3841.38
forwarder..36.0936.09
mobile tower yarder..10.61810.618
cable crane0.41003.4333.831
helicopter0.41006.8237.222
others......
total0.87198.1298.92
VSskidder2.43726.11028.510
forwarder0.31004.1284.527
mobile tower yarder1.05822.01223.011
cable crane0.31008.6198.919
helicopter4.12939.4843.67
others..0.7710.771
total8.220100.93109.13
ZGskidder..3.4253.425
forwarder..0.41000.4100
mobile tower yarder..1.7441.744
cable crane..0.41000.4100
helicopter......
others......
total..6.066.06
ZHskidder..29.6829.68
forwarder..15.51315.513
mobile tower yarder..5.3255.325
cable crane..0.7700.770
helicopter......
others......
total..51.1251.12
Switzerlandskidder9.220445.22454.42
forwarder0.3100180.94181.34
mobile tower yarder6.323152.24158.54
cable crane5.127129.15134.25
helicopter19.313202.14221.43
others0.77111.61712.417
total41.091121.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164894/151276

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %±
inside perimeterskidder44.516.6100.0.50.017.719.74.912.55.822.53.9
forwarder......1.51.5..0.80.8
mobile tower yarder11.110.5....24.25.33.13.115.43.3
cable crane11.110.5..25.015.310.63.812.65.912.13.0
helicopter22.113.8..25.015.344.06.168.78.247.44.6
others11.110.5......3.13.11.81.2
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder59.72.158.41.946.02.124.31.49.41.539.90.8
forwarder31.62.037.01.95.81.04.30.62.60.815.90.6
mobile tower yarder5.41.02.90.720.81.721.41.312.31.713.60.6
cable crane1.10.50.80.314.41.421.41.315.31.811.50.5
helicopter0.40.30.30.212.41.428.21.457.12.518.00.6
others1.80.60.60.30.70.30.30.23.10.91.10.2
total100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder59.52.158.41.946.12.024.01.39.71.539.30.8
forwarder31.12.037.01.95.70.94.10.62.40.815.40.6
mobile tower yarder5.51.02.90.720.51.721.61.311.61.613.70.6
cable crane1.30.50.80.314.51.420.81.215.11.811.60.5
helicopter0.70.40.30.212.51.429.21.458.02.419.10.6
others2.00.60.60.30.70.30.30.23.10.91.10.2
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 #164895/151277

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder1.5500.41001.4504.5281.4509.220
forwarder......0.3100..0.3100
mobile tower yarder0.4100....5.5250.41006.223
cable crane0.4100..0.7712.4381.4504.927
helicopter0.771..0.77110.0187.82119.313
others0.4100......0.41000.771
total3.3330.41002.93522.81211.41740.79
outside perimeterskidder117.94133.5498.0583.6612.716445.82
forwarder62.4784.7512.31714.9153.531177.84
mobile tower yarder10.6186.72344.3873.7616.614151.94
cable crane2.2411.84530.61073.7620.512128.95
helicopter0.7710.77126.31197.0576.85201.54
others3.7311.4501.4501.1584.22911.817
total197.51228.81213.02343.92134.431117.61
totalskidder119.44133.9499.5588.1614.115454.92
forwarder62.4784.7512.31715.2153.531178.14
mobile tower yarder11.0186.72344.3879.2616.914158.14
cable crane2.6381.84531.41076.2622.012133.85
helicopter1.5500.77127.011107.0584.65220.83
others4.0301.4501.4501.1584.62812.517
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164896/151278

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest %± %± %± %± %± %± %±
inside perimeterskidder49.915.827.810.617.47.929.19.311.110.512.55.822.43.9
forwarder......4.24.1....0.80.8
mobile tower yarder10.09.527.810.626.19.212.56.722.213.93.13.115.53.4
cable crane10.09.516.78.821.78.64.24.1..12.65.912.13.0
helicopter20.112.727.810.634.89.950.110.266.715.768.78.247.44.6
others10.09.5........3.13.11.71.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterskidder59.01.438.62.139.32.625.82.622.82.19.41.539.80.8
forwarder34.61.43.70.84.81.14.11.27.21.32.60.815.90.6
mobile tower yarder4.00.625.81.914.41.921.82.420.42.012.31.713.60.6
cable crane0.90.318.31.719.32.18.51.626.82.215.31.811.60.5
helicopter0.30.213.51.521.02.239.12.822.82.157.12.518.00.6
others1.20.30.20.21.20.60.70.5..3.10.91.00.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalskidder58.91.438.22.038.02.526.12.522.52.19.71.539.20.8
forwarder34.31.43.50.84.51.14.11.17.01.32.40.815.40.6
mobile tower yarder4.10.625.81.815.21.921.12.320.52.011.61.613.70.6
cable crane1.00.318.21.619.52.08.21.526.22.215.11.811.60.5
helicopter0.50.214.01.521.82.139.92.823.82.158.02.419.00.6
others1.20.30.20.21.10.50.60.4..3.10.91.10.2
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 #164897/151279

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterskidder1.8451.8451.4502.4370.41001.4509.120
forwarder......0.3100....0.3100
mobile tower yarder0.41001.8452.1411.0580.7710.41006.323
cable crane0.41001.1581.7440.3100..1.4504.927
helicopter0.7711.8452.8354.1292.1417.82119.313
others0.4100........0.41000.771
total3.6326.5237.9208.2203.23311.41740.89
outside perimeterskidder251.5376.1647.8726.11031.31012.716445.52
forwarder147.447.2225.9244.1289.8183.531178.04
mobile tower yarder17.21450.8717.61322.01228.11016.614152.34
cable crane3.93036.1923.5118.61936.9920.512129.55
helicopter1.45026.71125.51139.4831.41076.85201.24
others5.0270.41001.4500.771..4.22911.717
total426.41197.32121.73100.93137.52134.431118.11
totalskidder253.3377.9649.2728.51031.71014.115454.62
forwarder147.447.2225.9244.5279.8183.531178.34
mobile tower yarder17.51452.7719.71223.01128.81016.914158.64
cable crane4.32937.1925.2118.91936.9922.012134.45
helicopter2.24128.51128.31043.6733.5984.65220.63
others5.4260.41001.4500.771..4.62812.417
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164898/151280

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionmain type of harvest %± %± %±
Western Juraskidder37.317.165.92.365.42.3
forwarder..25.02.124.62.1
mobile tower yarder12.411.75.51.15.61.1
cable crane12.411.71.40.61.60.6
helicopter25.415.50.50.30.90.5
others12.411.71.70.61.90.7
total100.0.100.0.100.0.
Eastern Juraskidder100.0.37.94.438.44.4
forwarder..54.64.554.24.5
mobile tower yarder..5.02.04.92.0
cable crane......
helicopter......
others..2.51.42.51.4
total100.0.100.0.100.0.
Western Plateauskidder..50.94.650.94.6
forwarder..48.34.648.34.6
mobile tower yarder..0.90.90.90.9
cable crane......
helicopter......
others......
total..100.0.100.0.
Central Plateauskidder100.0.61.43.361.63.3
forwarder..35.03.234.83.2
mobile tower yarder..1.80.91.80.9
cable crane..1.80.91.80.9
helicopter......
others......
total100.0.100.0.100.0.
Eastern Plateauskidder..59.12.859.12.8
forwarder..34.22.734.22.7
mobile tower yarder..4.51.24.51.2
cable crane..0.30.30.30.3
helicopter..0.60.50.60.5
others..1.30.61.30.6
total..100.0.100.0.
Western Pre-Alpsskidder..39.14.538.84.4
forwarder..5.02.05.02.0
mobile tower yarder..30.84.230.64.2
cable crane..14.23.214.13.2
helicopter100.0.10.02.810.82.8
others..0.80.80.80.8
total100.0.100.0.100.0.
Central Pre-Alpsskidder50.025.046.33.146.33.0
forwarder..4.51.34.41.2
mobile tower yarder..20.92.520.62.5
cable crane25.021.717.92.318.02.3
helicopter25.021.710.41.910.71.9
others......
total100.0.100.0.100.0.
Eastern Pre-Alpsskidder66.727.349.73.550.03.5
forwarder..7.91.97.81.9
mobile tower yarder..14.82.514.62.5
cable crane33.327.39.92.110.22.1
helicopter..16.32.616.02.6
others..1.50.81.50.8
total100.0.100.0.100.0.
Northwestern Alpsskidder23.111.725.23.525.03.3
forwarder..1.30.91.20.8
mobile tower yarder38.513.530.23.630.83.5
cable crane15.410.022.03.321.53.1
helicopter23.111.721.43.321.53.1
others......
total100.0.100.0.100.0.
Central Alpsskidder9.18.718.04.716.84.3
forwarder..1.51.51.31.3
mobile tower yarder45.515.119.34.822.94.8
cable crane9.18.722.35.120.54.6
helicopter36.414.637.35.937.25.5
others..1.61.61.41.4
total100.0.100.0.100.0.
Northeastern Alpsskidder11.110.530.05.128.14.8
forwarder......
mobile tower yarder11.110.510.03.410.13.2
cable crane33.315.841.35.540.55.2
helicopter44.416.618.84.421.44.4
others......
total100.0.100.0.100.0.
Southwestern Alpsskidder29.19.325.82.626.12.5
forwarder4.24.14.11.24.11.1
mobile tower yarder12.56.721.82.421.12.3
cable crane4.24.18.51.68.21.5
helicopter50.110.239.12.839.92.8
others..0.70.50.60.4
total100.0.100.0.100.0.
Southeastern Alpsskidder11.110.522.82.122.52.1
forwarder..7.21.37.01.3
mobile tower yarder22.213.920.42.020.52.0
cable crane..26.82.226.22.2
helicopter66.715.722.82.123.82.1
others......
total100.0.100.0.100.0.
Southern Alpsskidder12.55.89.41.59.71.5
forwarder..2.60.82.40.8
mobile tower yarder3.13.112.31.711.61.6
cable crane12.65.915.31.815.11.8
helicopter68.78.257.12.558.02.4
others3.13.13.10.93.10.9
total100.0.100.0.100.0.
Switzerlandskidder22.43.939.70.839.10.8
forwarder0.80.816.10.615.50.6
mobile tower yarder15.43.313.60.613.70.6
cable crane12.23.111.60.511.60.5
helicopter47.44.618.00.619.00.6
others1.71.21.10.21.10.2
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164899/151281

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionmain type of harvest1000 ha± %1000 ha± %1000 ha± %
Western Juraskidder1.15898.94100.04
forwarder..37.5937.59
mobile tower yarder0.41008.2208.620
cable crane0.41002.1412.538
helicopter0.7710.7711.450
others0.41002.5382.935
total2.935150.02152.82
Eastern Juraskidder0.410018.11218.512
forwarder..26.1826.18
mobile tower yarder..2.4402.440
cable crane......
helicopter......
others..1.2571.257
total0.410047.8248.22
Western Plateauskidder..24.61024.610
forwarder..23.41023.410
mobile tower yarder..0.41000.4100
cable crane......
helicopter......
others......
total..48.4348.43
Central Plateauskidder0.310042.0642.36
forwarder..23.9923.99
mobile tower yarder..1.2501.250
cable crane..1.2501.250
helicopter......
others......
total0.310068.4268.72
Eastern Plateauskidder..66.1566.15
forwarder..38.2838.28
mobile tower yarder..5.0265.026
cable crane..0.41000.4100
helicopter..0.7710.771
others..1.4501.450
total..111.92111.92
Western Pre-Alpsskidder..17.41217.412
forwarder..2.2402.240
mobile tower yarder..13.71413.714
cable crane..6.3236.323
helicopter0.41004.4284.826
others..0.41000.4100
total0.410044.4444.84
Central Pre-Alpsskidder0.77144.5745.27
forwarder..4.3284.328
mobile tower yarder..20.11220.112
cable crane0.410017.21317.613
helicopter0.410010.01810.418
others......
total1.45096.1297.52
Eastern Pre-Alpsskidder0.77136.1836.88
forwarder..5.7245.724
mobile tower yarder..10.71710.717
cable crane0.41007.1217.521
helicopter..11.81611.816
others..1.1581.158
total1.15772.5373.63
Northwestern Alpsskidder1.15714.31415.414
forwarder..0.7710.771
mobile tower yarder1.84417.11318.912
cable crane0.77112.51513.215
helicopter1.15712.21613.215
others......
total4.62756.8461.54
Central Alpsskidder0.31004.2284.527
forwarder..0.31000.3100
mobile tower yarder1.7444.5266.222
cable crane0.31005.2245.523
helicopter1.4498.61810.016
others..0.41000.4100
total3.82923.2827.07
Northeastern Alpsskidder0.41008.6189.018
forwarder......
mobile tower yarder0.41002.9343.232
cable crane1.15711.81512.914
helicopter1.4495.4246.821
others......
total3.23228.7731.96
Southwestern Alpsskidder2.43726.11028.510
forwarder0.31004.1284.527
mobile tower yarder1.05822.01223.011
cable crane0.31008.6198.919
helicopter4.12939.4843.67
others..0.7710.771
total8.220100.93109.13
Southeastern Alpsskidder0.410031.31031.710
forwarder..9.8189.818
mobile tower yarder0.77128.11028.810
cable crane..36.9936.99
helicopter2.14131.41033.59
others......
total3.233137.52140.62
Southern Alpsskidder1.45012.71614.115
forwarder..3.5313.531
mobile tower yarder0.410016.61416.914
cable crane1.45020.51222.012
helicopter7.82176.8584.65
others0.41004.2294.628
total11.417134.43145.72
Switzerlandskidder9.120444.82454.02
forwarder0.3100180.04180.34
mobile tower yarder6.323152.84159.24
cable crane5.027129.95134.85
helicopter19.413201.54220.83
others0.77111.81712.517
total40.991120.811161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164900/151282

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago44.416.6100.0.30.07.224.98.825.015.312.25.725.94.1
11-20 years ago22.413.9..15.05.612.56.712.511.79.15.012.93.1
21-30 years ago....20.06.3....6.14.28.72.6
31-40 years ago....10.04.74.24.112.511.76.14.26.92.4
41-50 years ago....2.52.512.76.912.511.76.14.26.02.2
over 50 years ago33.315.7..22.56.645.710.237.517.160.58.539.64.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago52.22.276.01.636.01.621.52.522.82.310.01.542.20.8
11-20 years ago24.21.914.41.323.01.414.62.219.12.27.21.318.20.7
21-30 years ago9.31.35.00.812.01.19.21.816.12.19.81.59.80.5
31-40 years ago6.21.11.90.58.00.96.51.511.21.88.21.46.50.4
41-50 years ago3.60.81.10.46.90.88.41.75.61.36.71.35.00.4
over 50 years ago4.50.91.70.514.21.139.83.025.22.458.12.518.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago52.02.276.11.635.71.521.82.422.92.310.21.541.60.8
11-20 years ago24.21.814.31.322.61.314.42.118.92.27.41.318.00.7
21-30 years ago9.11.25.00.812.31.18.41.615.72.09.51.49.80.5
31-40 years ago6.11.01.90.58.00.96.31.411.31.78.01.36.50.4
41-50 years ago3.50.81.10.46.70.88.81.75.81.36.61.25.00.4
over 50 years ago5.00.91.70.514.61.140.32.925.52.458.32.419.00.6
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 #164901/151283

NFI4b

forest area: rockfall 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 NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall 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 ago1.4500.7714.3292.1410.7711.45010.618
11-20 years ago0.771..2.1411.0580.41001.1585.326
21-30 years ago....2.835....0.7713.532
31-40 years ago....1.4500.31000.41000.7712.835
41-50 years ago....0.41001.0580.41000.7712.538
over 50 years ago1.158..3.2333.8301.1587.12216.215
total3.2330.77114.2168.2202.83511.81741.09
outside perimeterless than 10 years ago99.44194.82118.9519.21225.81113.915472.12
11-20 years ago46.1836.8976.0613.01521.61210.018203.54
21-30 years ago17.71412.71639.698.22018.21313.516110.05
31-40 years ago11.9175.02726.3115.82412.71611.31772.97
41-50 years ago6.9232.83522.8127.5216.3239.21955.68
over 50 years ago8.6204.22947.1835.6828.51080.45204.44
total190.61256.41330.7189.43113.13138.231118.41
totalless than 10 years ago100.94195.62123.2421.21226.51015.315482.72
11-20 years ago46.8836.8978.1614.01521.91211.117208.84
21-30 years ago17.71412.71642.498.22018.21314.215113.55
31-40 years ago11.9175.02727.7116.22313.01612.01775.87
41-50 years ago6.9232.83523.2128.6196.7229.91858.18
over 50 years ago9.7194.22950.3839.4829.51087.55220.63
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164902/151284
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