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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical....13.67.38.35.6..10.35.77.32.5
less stable59.915.547.112.136.410.345.710.250.020.458.59.249.14.8
stable40.115.552.912.150.010.746.010.250.020.431.18.643.54.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.40.47.41.26.01.312.02.15.41.25.51.35.20.4
less stable34.81.449.52.245.92.841.33.138.42.751.62.941.40.9
stable62.81.443.12.248.12.846.63.256.22.742.92.853.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.40.47.21.16.51.311.71.95.31.25.91.35.20.4
less stable35.01.449.42.245.32.741.73.038.62.652.22.741.70.9
stable62.61.443.42.248.22.746.63.056.12.741.92.753.10.9
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 #163513/149893

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....1.0580.771..1.1582.835
less stable2.1412.9352.8353.8301.1586.02418.614
stable1.4503.2333.8303.8301.1583.23316.514
total3.6326.1247.6218.2202.14110.31837.99
outside perimetercritical10.01913.7166.62210.3186.3236.02452.88
less stable145.6491.2550.0735.3844.9856.37423.42
stable262.9279.3652.5739.8865.7646.77547.02
total418.51184.32109.1385.44116.93109.041023.21
totalcritical10.01913.7167.62111.0176.3237.02255.68
less stable147.7494.1552.8739.1846.0762.36442.02
stable264.3282.6556.3643.6766.8650.07563.52
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163514/149894

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability %± %± %±
Western Juracritical..2.40.82.40.7
less stable49.817.730.32.330.72.3
stable50.217.767.22.366.92.3
total100.0.100.0.100.0.
Eastern Juracritical..1.71.21.71.2
less stable100.0.35.64.436.24.4
stable..62.74.562.14.5
total100.0.100.0.100.0.
Western Plateaucritical..2.61.52.61.5
less stable..35.04.535.04.5
stable..62.44.562.44.5
total..100.0.100.0.
Central Plateaucritical..2.71.12.71.1
less stable100.0.38.63.338.93.3
stable..58.73.358.43.3
total100.0.100.0.100.0.
Eastern Plateaucritical..2.30.92.30.9
less stable..37.72.837.72.8
stable..60.12.860.12.8
total..100.0.100.0.
Western Pre-Alpscritical..6.42.36.32.3
less stable..50.94.850.44.8
stable100.0.42.84.743.34.7
total100.0.100.0.100.0.
Central Pre-Alpscritical..8.81.88.71.7
less stable50.025.046.93.147.03.1
stable50.025.044.23.144.33.1
total100.0.100.0.100.0.
Eastern Pre-Alpscritical..4.71.54.71.5
less stable33.327.343.23.643.03.6
stable66.727.352.13.652.33.6
total100.0.100.0.100.0.
Northwestern Alpscritical..5.72.05.21.8
less stable50.014.553.24.252.94.0
stable50.014.541.24.241.94.0
total100.0.100.0.100.0.
Central Alpscritical20.012.77.53.69.53.7
less stable40.015.642.76.842.36.2
stable40.015.649.86.848.26.3
total100.0.100.0.100.0.
Northeastern Alpscritical11.110.58.43.38.73.2
less stable33.315.854.95.952.55.6
stable55.616.636.65.738.75.5
total100.0.100.0.100.0.
Southwestern Alpscritical8.35.612.02.111.71.9
less stable45.710.241.33.141.73.0
stable46.010.246.63.246.63.0
total100.0.100.0.100.0.
Southeastern Alpscritical..5.41.25.31.2
less stable50.020.438.42.738.62.6
stable50.020.456.22.756.12.7
total100.0.100.0.100.0.
Southern Alpscritical10.35.75.51.35.91.3
less stable58.59.251.62.952.22.7
stable31.18.642.92.841.92.7
total100.0.100.0.100.0.
Switzerlandcritical7.32.55.20.45.20.4
less stable49.04.841.40.941.60.9
stable43.64.853.50.953.10.9
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163515/149895

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability1000 ha± %1000 ha± %1000 ha± %
Western Juracritical..3.6313.631
less stable1.45044.3845.78
stable1.45098.2499.64
total2.935146.02148.92
Eastern Juracritical..0.8700.870
less stable0.410016.61317.012
stable..29.2829.28
total0.410046.6347.03
Western Plateaucritical..1.2571.257
less stable..16.51316.513
stable..29.4829.48
total..47.2447.24
Central Plateaucritical..1.9401.940
less stable0.310026.4926.79
stable..40.1640.16
total0.310068.4268.72
Eastern Plateaucritical..2.5372.537
less stable..41.5841.58
stable..66.1566.15
total..110.12110.12
Western Pre-Alpscritical..2.6372.637
less stable..20.71020.710
stable0.410017.41217.812
total0.410040.7441.14
Central Pre-Alpscritical..8.2208.220
less stable0.77143.7744.57
stable0.77141.2742.07
total1.45093.2394.72
Eastern Pre-Alpscritical..3.2333.233
less stable0.410029.3929.69
stable0.77135.4836.17
total1.15767.9368.93
Northwestern Alpscritical..2.9352.935
less stable2.14026.8928.99
stable2.14020.81122.911
total4.32850.4554.74
Central Alpscritical0.7701.4502.140
less stable1.4498.0199.317
stable1.4499.31710.715
total3.43018.61022.18
Northeastern Alpscritical0.41002.1402.537
less stable1.15714.01315.013
stable1.8449.31711.116
total3.23225.4828.76
Southwestern Alpscritical0.77110.31811.017
less stable3.83035.3839.18
stable3.83039.8843.67
total8.22085.4493.73
Southeastern Alpscritical..6.3236.323
less stable1.15844.9846.07
stable1.15865.7666.86
total2.141116.93119.03
Southern Alpscritical1.1586.0247.022
less stable6.02456.3762.36
stable3.23346.7750.07
total10.318109.04119.33
Switzerlandcritical2.83553.0855.88
less stable18.614424.22442.92
stable16.614548.72565.32
total38.091025.911063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163516/149896

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....2.62.6....3.43.41.91.3
21-40%11.310.6..2.62.68.65.8....3.71.8
41-60%....5.33.629.19.316.715.27.04.811.03.0
61-80%22.213.950.035.421.16.641.610.133.319.320.77.526.74.2
over 80%66.615.750.035.468.47.520.88.350.020.468.98.656.74.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.60.51.10.41.40.40.90.60.40.40.60.41.10.2
21-40%1.20.51.80.54.60.76.31.610.81.91.90.83.70.3
41-60%8.11.24.90.816.41.329.63.133.22.911.51.814.10.6
61-80%25.21.920.71.532.31.636.33.238.93.028.92.628.70.8
over 80%63.92.171.51.745.21.726.93.016.72.357.12.852.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.50.51.10.41.50.40.80.60.40.40.90.51.20.2
21-40%1.30.51.80.54.50.76.51.610.61.91.70.73.70.3
41-60%8.01.24.90.815.91.229.62.932.82.811.11.713.90.6
61-80%25.11.920.81.531.81.636.83.138.72.928.22.428.60.8
over 80%64.02.171.41.746.21.726.32.817.52.358.12.752.60.9
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 #163517/149897

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%....0.4100....0.41000.771
21-40%0.4100..0.41000.771....1.450
41-60%....0.7712.4370.41000.7714.229
61-80%0.7710.41002.8353.4310.7712.14110.218
over 80%2.2410.41009.2191.7441.1587.12221.613
total3.2330.77113.5168.2202.14110.31838.19
outside perimeter0-20%2.9352.8354.3290.7710.41000.77111.717
21-40%2.2414.62813.9164.82610.2182.14137.910
41-60%15.11512.41749.4822.61131.4912.916143.85
61-80%46.8852.3797.4527.71036.8832.410293.43
over 80%118.94181.13136.2420.51215.81464.06536.42
total185.92253.21301.1276.4494.63112.131023.21
total0-20%2.9352.8354.6280.7710.41001.15812.417
21-40%2.5384.62814.3165.52510.2182.14139.39
41-60%15.11512.41750.1825.01031.8913.616148.05
61-80%47.6852.77100.2531.1937.5834.59303.63
over 80%121.04181.43145.4422.21116.91471.15558.12
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163518/149898

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes) %± %± %±
AG0-20%..1.71.21.71.2
21-40%..4.11.84.11.8
41-60%..5.02.05.02.0
61-80%..14.03.214.03.2
over 80%..75.23.975.23.9
total..100.0.100.0.
AI0-20%......
21-40%......
41-60%..6.76.66.76.6
61-80%..26.711.826.711.8
over 80%..66.712.566.712.5
total..100.0.100.0.
AR0-20%......
21-40%......
41-60%..4.04.04.04.0
61-80%..32.09.532.09.5
over 80%..64.09.864.09.8
total..100.0.100.0.
BE0-20%..2.00.61.90.6
21-40%6.76.43.50.93.60.9
41-60%6.26.010.91.510.81.4
61-80%24.910.831.02.230.82.1
over 80%62.212.152.62.352.92.3
total100.0.100.0.100.0.
BL/BS0-20%..2.22.22.12.1
21-40%......
41-60%..4.43.04.33.0
61-80%100.0.6.53.78.54.1
over 80%..86.95.085.05.3
total100.0.100.0.100.0.
FR0-20%......
21-40%..3.61.83.61.8
41-60%..14.63.414.63.4
61-80%..29.14.429.14.4
over 80%..52.74.852.74.8
total..100.0.100.0.
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..100.0.100.0.
total..100.0.100.0.
GL0-20%..2.92.92.42.4
21-40%..8.84.97.34.1
41-60%14.313.35.94.17.34.1
61-80%..20.67.017.15.9
over 80%85.713.261.88.465.97.5
total100.0.100.0.100.0.
GR0-20%..0.50.40.50.3
21-40%..7.61.37.41.3
41-60%20.210.431.12.330.72.3
61-80%26.611.439.02.538.52.4
over 80%53.212.921.82.123.02.1
total100.0.100.0.100.0.
JU0-20%..1.21.21.21.2
21-40%......
41-60%..8.33.08.12.9
61-80%33.327.416.74.117.34.1
over 80%66.727.373.84.873.54.8
total100.0.100.0.100.0.
LU0-20%..2.41.42.41.4
21-40%..0.80.80.80.8
41-60%..15.23.215.23.2
61-80%..35.24.335.24.3
over 80%..46.44.546.44.5
total..100.0.100.0.
NE0-20%..1.41.41.41.4
21-40%......
41-60%..9.43.29.43.2
61-80%..34.25.234.25.2
over 80%..55.05.455.05.4
total..100.0.100.0.
NW0-20%......
21-40%......
41-60%..6.36.25.95.8
61-80%..25.011.123.510.5
over 80%100.0.68.811.870.611.3
total100.0.100.0.100.0.
OW0-20%..1.91.81.81.8
21-40%..2.02.02.02.0
41-60%..16.45.315.75.1
61-80%100.0.38.87.041.27.0
over 80%..40.97.139.36.9
total100.0.100.0.100.0.
SG0-20%..0.70.70.70.7
21-40%..5.21.95.11.9
41-60%..11.32.710.92.7
61-80%25.021.723.33.723.43.6
over 80%75.021.759.44.359.94.2
total100.0.100.0.100.0.
SH0-20%......
21-40%......
41-60%..2.82.82.82.8
61-80%..25.07.325.07.3
over 80%..72.27.672.27.6
total..100.0.100.0.
SO0-20%..1.21.21.21.2
21-40%..1.21.21.21.2
41-60%..2.51.72.41.7
61-80%..16.04.115.74.0
over 80%100.0.79.04.579.54.5
total100.0.100.0.100.0.
SZ0-20%......
21-40%..5.92.95.62.8
41-60%..19.14.818.34.6
61-80%..25.05.324.05.1
over 80%100.0.50.06.152.16.0
total100.0.100.0.100.0.
TG0-20%..2.82.02.82.0
21-40%..1.41.41.41.4
41-60%..2.82.02.82.0
61-80%..21.34.921.34.9
over 80%..71.55.471.55.4
total..100.0.100.0.
TI0-20%5.04.90.40.40.70.5
21-40%..2.41.02.20.9
41-60%..8.11.77.51.6
61-80%20.09.025.82.825.42.7
over 80%75.09.763.33.164.22.9
total100.0.100.0.100.0.
UR0-20%12.511.8..2.32.3
21-40%12.511.82.82.84.63.2
41-60%..23.47.219.16.1
61-80%25.015.428.27.627.66.8
over 80%50.017.845.68.546.47.7
total100.0.100.0.100.0.
VD0-20%..1.60.81.60.8
21-40%..3.21.13.21.1
41-60%..11.52.011.42.0
61-80%..28.72.928.42.9
over 80%100.0.55.03.255.33.2
total100.0.100.0.100.0.
VS0-20%..0.80.60.70.5
21-40%8.65.86.01.56.31.5
41-60%29.19.327.32.827.52.7
61-80%41.610.135.73.036.22.9
over 80%20.88.330.12.929.32.8
total100.0.100.0.100.0.
ZG0-20%..7.77.77.77.7
21-40%......
41-60%..15.410.415.410.4
61-80%..15.410.415.410.4
over 80%..61.514.061.514.0
total..100.0.100.0.
ZH0-20%......
21-40%..2.81.42.81.4
41-60%..3.51.53.51.5
61-80%..22.43.522.43.5
over 80%..71.33.871.33.8
total..100.0.100.0.
Switzerland0-20%1.81.31.10.21.20.2
21-40%3.71.83.70.43.70.3
41-60%10.93.014.00.613.90.6
61-80%26.64.228.40.828.30.8
over 80%56.94.752.80.952.90.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #163519/149899

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %
AG0-20%..0.8700.870
21-40%..2.0442.044
41-60%..2.4402.440
61-80%..6.8236.823
over 80%..36.6636.66
total..48.7248.72
AI0-20%......
21-40%......
41-60%..0.31000.3100
61-80%..1.3451.345
over 80%..3.2223.222
total..4.8114.811
AR0-20%......
21-40%......
41-60%..0.31000.3100
61-80%..2.6302.630
over 80%..5.1165.116
total..8.058.05
BE0-20%..3.1333.133
21-40%0.41005.5255.924
41-60%0.310017.21417.513
61-80%1.45048.6749.97
over 80%3.43182.5585.95
total5.525156.82162.32
BL/BS0-20%..0.41000.4100
21-40%......
41-60%..0.8700.870
61-80%0.41001.2571.649
over 80%..16.2916.29
total0.410018.7719.16
FR0-20%......
21-40%..1.5501.550
41-60%..6.0236.023
61-80%..12.01512.015
over 80%..21.71021.710
total..41.1341.13
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..2.2342.234
total..2.2342.234
GL0-20%..0.41000.4100
21-40%..1.2571.257
41-60%0.41000.8701.257
61-80%..2.7362.736
over 80%2.3398.11710.414
total2.73613.11115.88
GR0-20%..0.7710.771
21-40%..10.51810.518
41-60%1.15842.6843.68
61-80%1.45053.4754.87
over 80%2.83529.91032.79
total5.226137.13142.33
JU0-20%..0.41000.4100
21-40%......
41-60%..2.7372.737
61-80%0.41005.5255.824
over 80%0.87024.1724.97
total1.25732.7333.93
LU0-20%..0.9570.957
21-40%..0.31000.3100
41-60%..6.0216.021
61-80%..13.91313.913
over 80%..18.31018.310
total..39.3339.33
NE0-20%..0.41000.4100
21-40%......
41-60%..2.6342.634
61-80%..9.4169.416
over 80%..15.11015.110
total..27.4427.44
NW0-20%......
21-40%......
41-60%..0.41000.4100
61-80%..1.5461.546
over 80%0.41004.2224.620
total0.41006.1146.513
OW0-20%..0.31000.3100
21-40%..0.41000.4100
41-60%..3.0333.033
61-80%0.7707.1197.817
over 80%..7.5187.518
total0.77018.3519.04
SG0-20%..0.41000.4100
21-40%..2.5372.537
41-60%..5.4255.425
61-80%0.410011.21611.616
over 80%1.15728.6829.78
total1.45048.1549.54
SH0-20%......
21-40%......
41-60%..0.41000.4100
61-80%..3.2293.229
over 80%..9.3119.311
total..12.8312.83
SO0-20%..0.41000.4100
21-40%..0.41000.4100
41-60%..0.8700.870
61-80%..4.9264.926
over 80%0.87024.2725.06
total0.87030.7431.44
SZ0-20%......
21-40%..1.4491.449
41-60%..4.7264.726
61-80%..6.2226.222
over 80%1.15712.31313.412
total1.15724.6625.75
TG0-20%..0.6700.670
21-40%..0.31000.3100
41-60%..0.6700.670
61-80%..4.5234.523
over 80%..15.0915.09
total..21.0421.04
TI0-20%0.41000.41000.771
21-40%..2.1412.141
41-60%..7.2227.222
61-80%1.45022.91124.311
over 80%5.42556.1661.56
total7.22288.7495.94
UR0-20%0.3100..0.3100
21-40%0.31000.31000.770
41-60%..2.7352.735
61-80%0.7703.3304.027
over 80%1.3495.3236.620
total2.63411.71314.311
VD0-20%..1.5501.550
21-40%..3.0353.035
41-60%..10.61810.618
61-80%..26.51126.511
over 80%0.87150.8651.66
total0.87192.5393.23
VS0-20%..0.7710.771
21-40%0.7715.2255.924
41-60%2.43823.41125.810
61-80%3.43130.5934.09
over 80%1.74425.71027.410
total8.22085.4493.73
ZG0-20%..0.41000.4100
21-40%......
41-60%..0.9680.968
61-80%..0.9680.968
over 80%..3.4253.425
total..5.695.69
ZH0-20%......
21-40%..1.4491.449
41-60%..1.8441.844
61-80%..11.31611.316
over 80%..36.0636.06
total..50.4250.42
Switzerland0-20%0.77111.81712.517
21-40%1.45038.01039.49
41-60%4.229143.35147.55
61-80%10.218291.23301.43
over 80%21.813541.52563.22
total38.291025.711064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #163520/149900

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %±
inside perimeter0-20%......1.61.63.43.41.81.3
21-40%11.010.4....5.02.8..3.71.8
41-60%......16.44.77.04.811.03.0
61-80%22.213.9..62.517.126.25.620.77.526.94.3
over 80%66.715.7100.0.37.517.150.86.468.98.656.54.8
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.50.51.20.41.10.41.10.40.60.51.10.2
21-40%1.10.52.00.63.60.87.30.91.90.83.70.3
41-60%6.81.15.60.913.91.526.51.510.41.714.00.6
61-80%23.51.821.61.632.32.034.61.629.22.628.60.8
over 80%67.02.069.51.849.12.130.41.657.72.852.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.50.51.20.41.10.41.10.30.90.51.20.2
21-40%1.30.52.00.63.50.87.20.91.80.73.70.3
41-60%6.71.15.60.913.71.425.91.510.11.613.90.6
61-80%23.51.821.61.632.72.034.11.628.52.528.60.8
over 80%67.02.069.61.848.92.131.81.558.72.752.70.9
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 #163521/149901

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%......0.31000.41000.771
21-40%0.4100....1.158..1.450
41-60%......3.5320.7714.229
61-80%0.771..1.8455.5252.14110.218
over 80%2.2410.41001.15810.7187.12221.413
total3.3330.41002.93521.11210.31837.99
outside perimeter0-20%2.9352.8352.2413.1330.77111.717
21-40%2.2414.6277.22221.5122.14137.610
41-60%13.11612.61628.11177.9611.417143.25
61-80%45.3848.8865.26101.7531.810292.93
over 80%128.93157.1399.1589.3662.96537.32
total192.42225.91201.82293.52109.041022.71
total0-20%2.9352.8352.2413.5321.15812.417
21-40%2.5384.6277.22222.6122.14139.09
41-60%13.11612.61628.11181.4612.117147.45
61-80%46.0848.8867.06107.2534.09303.13
over 80%131.13157.43100.25100.0570.05558.72
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163522/149902

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....4.54.4....3.43.41.81.3
21-40%10.19.6..4.54.48.65.8....3.71.8
41-60%..5.95.74.54.429.19.316.715.27.04.811.03.0
61-80%20.012.635.311.613.67.341.610.133.319.320.77.526.84.3
over 80%69.914.558.811.972.79.520.88.350.020.468.98.656.64.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.40.31.80.61.00.60.80.60.30.30.60.51.20.2
21-40%1.60.44.30.94.91.26.01.59.01.61.90.83.70.4
41-60%6.20.716.41.613.11.927.32.833.02.610.41.714.00.6
61-80%22.51.235.02.125.32.535.73.038.22.729.22.628.70.8
over 80%68.41.442.52.255.72.830.12.919.52.257.72.852.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.40.31.70.61.20.60.70.50.30.30.90.51.20.2
21-40%1.70.44.20.94.91.26.31.58.81.51.80.73.70.3
41-60%6.10.716.11.612.61.827.52.732.72.610.11.613.90.6
61-80%22.51.235.02.124.62.336.22.938.12.628.52.528.60.8
over 80%68.41.443.02.256.82.729.32.820.02.258.72.752.60.9
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 #163523/149903

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%....0.3100....0.41000.771
21-40%0.4100..0.31000.771....1.450
41-60%..0.41000.31002.4380.41000.7714.229
61-80%0.7712.2411.0583.4310.7712.14110.218
over 80%2.5383.6315.5251.7441.1587.12221.513
total3.6326.1247.6218.2202.14110.31837.99
outside perimeter0-20%5.7253.2331.1580.7710.41000.77111.817
21-40%6.8237.9215.4265.22510.5182.14137.910
41-60%25.81130.31014.31523.31138.6811.417143.75
61-80%94.1664.5627.61030.5944.6831.810293.33
over 80%286.1278.3660.7625.71022.81262.96536.52
total418.51184.32109.1385.44116.93109.041023.21
total0-20%5.7253.2331.4500.7710.41001.15812.517
21-40%7.2227.9215.7255.92410.5182.14139.39
41-60%25.81130.71014.71525.71039.0812.117147.95
61-80%94.8666.7628.71034.0945.4734.09303.43
over 80%288.6281.9566.2527.41023.81170.05558.02
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163524/149904

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 NFI1/NFI2/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%12.912.01.20.61.50.6
41-60%..7.61.37.41.3
61-80%12.411.726.42.226.22.2
over 80%74.615.563.52.463.72.4
total100.0.100.0.100.0.
Eastern Jura0-20%..2.51.52.51.4
21-40%..0.80.80.80.8
41-60%..4.21.94.21.8
61-80%100.0.13.63.214.33.2
over 80%..78.83.878.13.8
total100.0.100.0.100.0.
Western Plateau0-20%..2.61.52.61.5
21-40%..1.71.21.71.2
41-60%..9.62.89.62.8
61-80%..25.24.125.24.1
over 80%..60.84.660.84.6
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%..2.91.02.91.0
41-60%..3.91.13.91.1
61-80%..19.22.219.22.2
over 80%..73.42.573.42.5
total..100.0.100.0.
Western Pre-Alps0-20%..0.90.90.90.9
21-40%..7.22.57.22.5
41-60%..20.93.920.73.9
61-80%100.0.29.14.429.84.4
over 80%..41.84.741.44.7
total100.0.100.0.100.0.
Central Pre-Alps0-20%..1.20.71.10.7
21-40%..2.30.92.30.9
41-60%..13.82.113.62.1
61-80%75.021.738.83.039.43.0
over 80%25.021.743.83.143.63.1
total100.0.100.0.100.0.
Eastern Pre-Alps0-20%..1.00.71.00.7
21-40%..3.21.33.11.3
41-60%..10.02.29.82.1
61-80%33.327.325.33.225.43.1
over 80%66.727.360.53.660.63.5
total100.0.100.0.100.0.
Northwestern Alps0-20%..3.51.63.31.4
21-40%..5.72.05.21.8
41-60%8.38.017.73.217.03.0
61-80%16.710.832.64.031.43.8
over 80%75.012.540.54.143.24.0
total100.0.100.0.100.0.
Central Alps0-20%10.09.5..1.61.6
21-40%10.09.53.72.64.72.6
41-60%..24.35.920.55.1
61-80%20.012.724.05.823.35.3
over 80%60.015.548.16.849.96.3
total100.0.100.0.100.0.
Northeastern Alps0-20%..1.41.41.21.2
21-40%..9.93.68.83.2
41-60%11.110.512.74.012.53.7
61-80%..26.85.323.84.8
over 80%88.910.449.36.053.75.6
total100.0.100.0.100.0.
Southwestern Alps0-20%..0.80.60.70.5
21-40%8.65.86.01.56.31.5
41-60%29.19.327.32.827.52.7
61-80%41.610.135.73.036.22.9
over 80%20.88.330.12.929.32.8
total100.0.100.0.100.0.
Southeastern Alps0-20%..0.30.30.30.3
21-40%..9.01.68.81.5
41-60%16.715.233.02.632.72.6
61-80%33.319.338.22.738.12.6
over 80%50.020.419.52.220.02.2
total100.0.100.0.100.0.
Southern Alps0-20%3.43.40.60.50.90.5
21-40%..1.90.81.80.7
41-60%7.04.810.41.710.11.6
61-80%20.77.529.22.628.52.5
over 80%68.98.657.72.858.72.7
total100.0.100.0.100.0.
Switzerland0-20%1.81.31.20.21.20.2
21-40%3.71.83.70.33.70.3
41-60%11.03.014.10.613.90.6
61-80%26.94.328.60.828.60.8
over 80%56.64.752.50.952.60.9
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163525/149905

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 NFI1/NFI2/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%0.41001.8452.241
41-60%..11.11711.117
61-80%0.410038.6938.98
over 80%2.14192.7494.94
total2.935146.02148.92
Eastern Jura0-20%..1.2571.257
21-40%..0.41000.4100
41-60%..2.0442.044
61-80%0.41006.3236.723
over 80%..36.7636.76
total0.410046.6347.03
Western Plateau0-20%..1.2571.257
21-40%..0.8700.870
41-60%..4.5294.529
61-80%..11.91711.917
over 80%..28.7828.78
total..47.2447.24
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%..21.11221.112
over 80%..80.8480.84
total..110.12110.12
Western Pre-Alps0-20%..0.41000.4100
21-40%..2.9352.935
41-60%..8.5198.519
61-80%0.410011.91512.215
over 80%..17.01217.012
total0.410040.7441.14
Central Pre-Alps0-20%..1.1581.158
21-40%..2.2412.241
41-60%..12.91612.916
61-80%1.15836.2837.38
over 80%0.410040.9741.27
total1.45093.2394.72
Eastern Pre-Alps0-20%..0.7710.771
21-40%..2.1412.141
41-60%..6.8226.822
61-80%0.410017.11317.513
over 80%0.77141.1741.86
total1.15767.9368.93
Northwestern Alps0-20%..1.8441.844
21-40%..2.9352.935
41-60%0.41008.9199.318
61-80%0.77116.41317.113
over 80%3.23320.41223.610
total4.32850.4554.74
Central Alps0-20%0.3100..0.3100
21-40%0.31000.7701.057
41-60%..4.5274.527
61-80%0.7704.5265.224
over 80%2.1409.01711.015
total3.43018.61022.18
Northeastern Alps0-20%..0.41000.4100
21-40%..2.5372.537
41-60%0.41003.2323.631
61-80%..6.8216.821
over 80%2.93412.51415.412
total3.23225.4828.76
Southwestern Alps0-20%..0.7710.771
21-40%0.7715.2255.924
41-60%2.43823.31125.710
61-80%3.43130.5934.09
over 80%1.74425.71027.410
total8.22085.4493.73
Southeastern Alps0-20%..0.41000.4100
21-40%..10.51810.518
41-60%0.410038.6839.08
61-80%0.77144.6845.47
over 80%1.15822.81223.811
total2.141116.93119.03
Southern Alps0-20%0.41000.7711.158
21-40%..2.1412.141
41-60%0.77111.41712.117
61-80%2.14131.81034.09
over 80%7.12262.9670.05
total10.318109.04119.33
Switzerland0-20%0.77111.91712.617
21-40%1.45038.01039.49
41-60%4.229144.25148.35
61-80%10.218293.73303.93
over 80%21.513538.12559.62
total38.091025.911063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163526/149906

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/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 track22.213.9100.0.7.94.420.88.316.715.26.94.713.83.3
road and skidding road33.315.7..7.94.48.35.6..3.43.48.42.7
road and cable line....52.68.120.88.316.715.220.87.629.74.4
road and flight path22.413.9..23.76.950.110.266.719.362.09.041.64.7
no access intended22.213.9..7.94.4....6.94.76.52.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track51.22.269.01.719.71.417.52.522.42.63.81.136.00.8
road and skidding road37.62.119.01.510.71.15.41.55.61.49.21.616.60.7
road and cable line6.01.03.90.744.11.737.73.349.73.132.72.626.00.8
road and flight path0.20.20.10.18.51.035.93.221.92.541.92.811.90.6
no access intended5.01.08.01.017.01.33.61.20.40.412.41.99.50.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track50.72.269.11.719.21.317.82.422.32.54.11.135.20.8
road and skidding road37.52.118.91.510.61.05.71.55.51.48.71.516.30.7
road and cable line5.91.03.90.744.51.736.03.149.03.031.72.526.20.7
road and flight path0.60.30.10.19.11.037.33.122.92.543.62.712.90.6
no access intended5.31.07.91.016.61.23.21.10.40.411.91.89.40.5
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 #163527/149907

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 NFI1/NFI2/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....7.1221.7440.41002.24111.318
road and flight path0.771..3.2334.1281.4506.42315.915
no access intended0.771..1.158....0.7712.538
total3.2330.77113.5168.2202.14110.31838.19
outside perimeterroad and skidding track95.15174.7359.4713.41521.2124.329368.12
road and skidding road69.9648.1832.3104.1285.32510.318169.94
road and cable line11.2179.919132.8428.81047.0736.69266.33
road and flight path0.41000.410025.51127.41020.71247.08121.35
no access intended9.41920.21351.182.7350.410013.91597.66
total185.92253.21301.1276.4494.63112.131023.21
totalroad and skidding track95.85175.4360.4715.11421.6125.026373.32
road and skidding road71.0648.1833.4104.8265.32510.618173.14
road and cable line11.2179.919139.9430.5947.4738.88277.63
road and flight path1.1580.410028.71131.5922.11253.47137.25
no access intended10.11820.21352.182.7350.410014.615100.16
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163528/149908

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonconcept of transportation system %± %± %±
AGroad and skidding track..61.24.461.24.4
road and skidding road..32.24.332.24.3
road and cable line......
road and flight path......
no access intended..6.62.36.62.3
total..100.0.100.0.
AIroad and skidding track..60.012.960.012.9
road and skidding road..13.39.013.39.0
road and cable line..20.010.620.010.6
road and flight path..6.76.66.76.6
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 track18.79.738.72.338.02.2
road and skidding road12.48.221.61.921.31.9
road and cable line37.312.130.32.230.62.1
road and flight path25.310.91.30.52.10.7
no access intended6.26.08.11.38.01.2
total100.0.100.0.100.0.
BL/BSroad and skidding track100.0.56.87.357.77.2
road and skidding road..34.57.133.87.0
road and cable line..6.53.76.43.6
road and flight path......
no access intended..2.22.22.12.1
total100.0.100.0.100.0.
FRroad and skidding track..44.64.744.64.7
road and skidding road..12.73.212.73.2
road and cable line..26.34.226.34.2
road and flight path......
no access intended..16.43.516.43.5
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 line71.417.267.68.168.37.3
road and flight path14.313.311.85.612.25.2
no access intended14.313.320.67.019.56.2
total100.0.100.0.100.0.
GRroad and skidding track6.66.423.22.122.62.1
road and skidding road..4.81.14.71.0
road and cable line26.911.550.42.549.62.5
road and flight path53.212.919.82.021.02.0
no access intended13.38.81.80.72.20.7
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..24.73.924.73.9
road and skidding road..10.42.710.42.7
road and cable line..9.62.69.62.6
road and flight path......
no access intended..55.34.555.34.5
total..100.0.100.0.
NEroad and skidding track..51.85.551.85.5
road and skidding road..42.45.442.45.4
road and cable line......
road and flight path......
no access intended..5.92.65.92.6
total..100.0.100.0.
NWroad and skidding track..6.36.25.95.8
road and skidding road..6.36.25.95.8
road and cable line100.0.37.512.341.212.2
road and flight path..12.58.411.88.0
no access intended..37.512.335.311.8
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 track50.025.139.84.340.14.2
road and skidding road..19.63.419.03.4
road and cable line..27.83.927.03.8
road and flight path50.025.112.02.813.12.9
no access intended..0.80.80.70.7
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..56.85.555.45.5
road and skidding road50.035.530.95.231.35.1
road and cable line..9.93.39.63.3
road and flight path......
no access intended50.035.52.51.73.62.1
total100.0.100.0.100.0.
SZroad and skidding track..4.42.54.22.4
road and skidding road..14.74.314.14.2
road and cable line100.0.35.35.838.05.8
road and flight path..4.42.54.22.4
no access intended..41.26.039.45.8
total100.0.100.0.100.0.
TGroad and skidding track..85.84.285.84.2
road and skidding road..12.84.012.84.0
road and cable line..1.41.41.41.4
road and flight path......
no access intended......
total..100.0.100.0.
TIroad and skidding track10.06.72.00.92.61.0
road and skidding road5.04.910.41.910.01.8
road and cable line15.08.025.82.825.02.6
road and flight path70.010.248.43.250.03.1
no access intended..13.32.212.32.0
total100.0.100.0.100.0.
URroad and skidding track12.511.85.63.96.93.9
road and skidding road..9.35.07.64.2
road and cable line50.017.848.48.548.77.7
road and flight path25.015.422.67.123.06.4
no access intended12.511.814.15.913.85.3
total100.0.100.0.100.0.
VDroad and skidding track..47.13.246.73.2
road and skidding road..20.92.620.82.6
road and cable line50.035.414.82.315.12.3
road and flight path50.035.46.51.66.91.6
no access intended..10.72.010.62.0
total100.0.100.0.100.0.
VSroad and skidding track20.88.318.92.519.02.4
road and skidding road8.35.66.01.56.21.5
road and cable line20.88.339.03.137.42.9
road and flight path50.110.232.93.034.42.9
no access intended..3.21.12.91.0
total100.0.100.0.100.0.
ZGroad and skidding track..46.214.346.214.3
road and skidding road..15.410.415.410.4
road and cable line..38.513.938.513.9
road and flight path......
no access intended......
total..100.0.100.0.
ZHroad and skidding track..74.83.674.83.6
road and skidding road..11.92.711.92.7
road and cable line..12.62.812.62.8
road and flight path......
no access intended..0.70.70.70.7
total..100.0.100.0.
Switzerlandroad and skidding track13.83.336.00.835.20.8
road and skidding road8.52.716.80.716.50.7
road and cable line29.74.425.90.826.10.8
road and flight path41.54.711.90.612.90.6
no access intended6.62.49.40.59.30.5
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #163529/149909

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/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..29.8829.88
road and skidding road..15.71315.713
road and cable line......
road and flight path......
no access intended..3.2343.234
total..48.7248.72
AIroad and skidding track..2.9242.924
road and skidding road..0.6690.669
road and cable line..1.0541.054
road and flight path..0.31000.3100
no access intended......
total..4.8114.811
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 track1.05860.6661.76
road and skidding road0.77133.9934.59
road and cable line2.14147.6749.67
road and flight path1.4502.1413.431
no access intended0.310012.61613.016
total5.525156.82162.32
BL/BSroad and skidding track0.410010.61411.014
road and skidding road..6.4226.422
road and cable line..1.2571.257
road and flight path......
no access intended..0.41000.4100
total0.410018.7719.16
FRroad and skidding track..18.31118.311
road and skidding road..5.2255.225
road and cable line..10.81610.816
road and flight path......
no access intended..6.7226.722
total..41.1341.13
GEroad and skidding track..2.2342.234
road and skidding road......
road and cable line......
road and flight path......
no access intended......
total..2.2342.234
GLroad and skidding track......
road and skidding road......
road and cable line1.9438.91610.813
road and flight path0.41001.5491.943
no access intended0.41002.7363.133
total2.73613.11115.88
GRroad and skidding track0.310031.81032.110
road and skidding road..6.6236.623
road and cable line1.45069.1670.56
road and flight path2.83527.11129.910
no access intended0.7712.4383.133
total5.226137.13142.33
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..21.8921.89
total..39.3339.33
NEroad and skidding track..14.21114.211
road and skidding road..11.61311.613
road and cable line......
road and flight path......
no access intended..1.6441.644
total..27.4427.44
NWroad and skidding track..0.41000.4100
road and skidding road..0.41000.4100
road and cable line0.41002.3362.732
road and flight path..0.8690.869
no access intended..2.3362.336
total0.41006.1146.513
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 track0.77019.21219.911
road and skidding road..9.4189.418
road and cable line..13.41513.415
road and flight path0.7705.8246.522
no access intended..0.41000.4100
total1.45048.1549.54
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..17.41017.410
road and skidding road0.41009.5179.817
road and cable line..3.0343.034
road and flight path......
no access intended0.41000.8701.157
total0.87030.7431.44
SZroad and skidding track..1.1571.157
road and skidding road..3.6303.630
road and cable line1.1578.7179.816
road and flight path..1.1571.157
no access intended..10.11610.116
total1.15724.6625.75
TGroad and skidding track..18.0618.06
road and skidding road..2.7312.731
road and cable line..0.31000.3100
road and flight path......
no access intended......
total..21.0421.04
TIroad and skidding track0.7711.8442.537
road and skidding road0.41009.3199.619
road and cable line1.15822.91124.011
road and flight path5.02643.0848.07
no access intended..11.81711.817
total7.22288.7495.94
URroad and skidding track0.31000.7701.057
road and skidding road..1.1581.158
road and cable line1.3495.7227.019
road and flight path0.7702.6343.330
no access intended0.31001.7442.039
total2.63411.71314.311
VDroad and skidding track..43.5743.57
road and skidding road..19.41319.413
road and cable line0.410013.71614.115
road and flight path0.41006.0246.424
no access intended..9.9199.919
total0.87192.5393.23
VSroad and skidding track1.74416.11417.813
road and skidding road0.7715.1255.824
road and cable line1.74433.3935.09
road and flight path4.12928.11032.39
no access intended..2.7352.735
total8.22085.4493.73
ZGroad and skidding track..2.6322.632
road and skidding road..0.9680.968
road and cable line..2.1372.137
road and flight path......
no access intended......
total..5.695.69
ZHroad and skidding track..37.7537.75
road and skidding road..6.0236.023
road and cable line..6.3226.322
road and flight path......
no access intended..0.41000.4100
total..50.4250.42
Switzerlandroad and skidding track5.326369.52374.82
road and skidding road3.333171.94175.24
road and cable line11.317266.03277.43
road and flight path15.915121.85137.64
no access intended2.53896.5599.05
total38.291025.711064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #163530/149910

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %±
inside perimeterroad and skidding track22.213.9100.0.25.015.313.14.36.94.713.93.3
road and skidding road33.415.7..25.015.34.92.83.43.48.52.7
road and cable line....25.015.339.36.320.87.629.44.4
road and flight path22.113.8..25.015.337.86.262.09.041.74.7
no access intended22.213.9....4.92.86.94.76.52.4
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track51.82.270.91.825.51.818.31.32.91.036.00.8
road and skidding road36.82.118.01.515.91.55.90.89.01.616.70.7
road and cable line5.31.03.70.732.92.049.01.732.82.725.90.8
road and flight path0.20.20.20.25.91.021.11.442.62.811.80.6
no access intended5.91.07.21.019.81.75.60.812.71.99.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track51.32.271.01.825.51.817.91.33.31.035.20.8
road and skidding road36.82.118.01.516.01.55.80.88.61.516.40.7
road and cable line5.21.03.70.732.72.048.41.731.72.526.00.7
road and flight path0.60.30.20.26.21.022.21.444.22.712.90.6
no access intended6.21.07.11.019.51.75.60.812.21.89.50.5
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 #163531/149911

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 NFI1/NFI2/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....0.7718.3202.14111.218
road and flight path0.771..0.7718.0216.42315.815
no access intended0.771....1.0580.7712.538
total3.3330.41002.93521.11210.31837.99
outside perimeterroad and skidding track99.75160.3351.5753.783.233368.32
road and skidding road70.8640.7832.11017.3149.918170.84
road and cable line10.2188.42066.36143.9435.79264.63
road and flight path0.41000.410011.91762.0746.48121.05
no access intended11.31716.21440.0916.61413.81597.96
total192.42225.91201.82293.52109.041022.71
totalroad and skidding track100.44160.6352.3756.473.930373.62
road and skidding road71.9640.7832.81018.41310.218174.04
road and cable line10.2188.42067.06152.2437.99275.83
road and flight path1.1580.410012.61670.0652.87136.85
no access intended12.01716.21440.0917.61414.515100.46
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163532/149912

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/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 track30.014.55.95.713.67.320.88.316.715.26.94.713.83.3
road and skidding road30.014.517.69.3..8.35.6..3.43.48.42.7
road and cable line..47.112.154.510.620.88.316.715.220.87.629.64.4
road and flight path20.112.723.510.322.78.950.110.266.719.362.09.041.74.7
no access intended20.012.65.95.79.16.1....6.94.76.52.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track62.31.416.21.625.82.518.92.526.22.42.91.036.00.8
road and skidding road26.51.312.91.513.01.96.01.55.11.29.01.616.60.7
road and cable line4.40.643.22.238.42.739.03.148.42.732.82.726.00.8
road and flight path0.20.16.31.19.81.732.93.020.02.242.62.811.80.6
no access intended6.60.721.31.813.01.93.21.10.30.312.71.99.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track62.01.415.91.625.02.419.02.426.02.43.31.035.20.8
road and skidding road26.51.313.11.512.21.86.21.55.01.28.61.516.30.7
road and cable line4.40.643.42.239.52.737.42.947.82.731.72.526.10.7
road and flight path0.30.26.81.110.61.734.42.920.92.244.22.712.90.6
no access intended6.70.720.81.812.71.82.91.00.30.312.21.89.50.5
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 #163533/149913

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 NFI1/NFI2/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..2.9354.1281.7440.41002.14111.218
road and flight path0.7711.4501.7444.1291.4506.42315.815
no access intended0.7710.41000.771....0.7712.538
total3.6326.1247.6218.2202.14110.31837.99
outside perimeterroad and skidding track260.8229.91028.11016.11430.6103.233368.72
road and skidding road110.9523.81214.2155.1256.0249.918169.84
road and cable line18.61479.7541.9833.3956.6635.79265.83
road and flight path0.77111.51710.71728.11023.41146.48120.95
no access intended27.51139.3914.1152.7350.410013.81597.96
total418.51184.32109.1385.44116.93109.041023.21
totalroad and skidding track261.8230.31029.21017.81330.9103.930374.02
road and skidding road112.0524.91114.2155.8246.02410.218173.04
road and cable line18.61482.6546.1735.0956.9637.99277.13
road and flight path1.45013.01612.41632.3924.81152.87136.75
no access intended28.31139.7914.8142.7350.410014.515100.46
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163534/149914

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · concept of transportation system · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionconcept of transportation system %± %± %±
Western Juraroad and skidding track12.411.749.42.548.72.5
road and skidding road37.317.137.62.437.62.4
road and cable line..5.91.25.71.1
road and flight path25.415.50.20.20.70.4
no access intended24.915.36.81.27.21.3
total100.0.100.0.100.0.
Eastern Juraroad and skidding track100.0.60.24.560.64.4
road and skidding road..33.84.433.54.3
road and cable line..3.41.73.41.7
road and flight path......
no access intended..2.51.52.51.4
total100.0.100.0.100.0.
Western Plateauroad and skidding track..72.04.272.04.2
road and skidding road..18.43.618.43.6
road and cable line..0.90.90.90.9
road and flight path......
no access intended..8.72.68.72.6
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..75.72.475.72.4
road and skidding road..16.92.116.92.1
road and cable line..4.91.24.91.2
road and flight path..0.30.30.30.3
no access intended..2.30.92.30.9
total..100.0.100.0.
Western Pre-Alpsroad and skidding track..30.94.430.64.4
road and skidding road..8.22.68.12.6
road and cable line..40.94.740.54.7
road and flight path100.0.4.62.05.42.2
no access intended..15.53.515.33.4
total100.0.100.0.100.0.
Central Pre-Alpsroad and skidding track..13.82.113.62.1
road and skidding road50.025.018.82.419.32.4
road and cable line25.021.733.52.933.32.9
road and flight path25.021.75.01.45.31.4
no access intended..28.82.828.42.8
total100.0.100.0.100.0.
Eastern Pre-Alpsroad and skidding track66.727.338.43.538.93.5
road and skidding road..16.32.716.12.6
road and cable line33.327.327.43.227.53.2
road and flight path..7.92.07.81.9
no access intended..10.02.29.82.1
total100.0.100.0.100.0.
Northwestern Alpsroad and skidding track8.38.09.22.49.22.3
road and skidding road8.38.05.72.05.91.9
road and cable line58.314.363.14.162.73.9
road and flight path16.710.810.02.510.52.5
no access intended8.38.012.02.711.82.6
total100.0.100.0.100.0.
Central Alpsroad and skidding track10.09.53.72.64.72.6
road and skidding road..7.73.76.53.1
road and cable line60.015.546.26.848.46.3
road and flight path20.012.716.65.117.14.7
no access intended10.09.525.86.023.35.3
total100.0.100.0.100.0.
Northeastern Alpsroad and skidding track..8.53.37.53.0
road and skidding road..8.43.37.53.0
road and cable line55.616.662.05.861.35.5
road and flight path33.315.89.93.512.53.7
no access intended11.110.511.33.811.23.5
total100.0.100.0.100.0.
Southwestern Alpsroad and skidding track20.88.318.92.519.02.4
road and skidding road8.35.66.01.56.21.5
road and cable line20.88.339.03.137.42.9
road and flight path50.110.232.93.034.42.9
no access intended..3.21.12.91.0
total100.0.100.0.100.0.
Southeastern Alpsroad and skidding track16.715.226.22.426.02.4
road and skidding road..5.11.25.01.2
road and cable line16.715.248.42.747.82.7
road and flight path66.719.320.02.220.92.2
no access intended..0.30.30.30.3
total100.0.100.0.100.0.
Southern Alpsroad and skidding track6.94.72.91.03.31.0
road and skidding road3.43.49.01.68.61.5
road and cable line20.87.632.82.731.72.5
road and flight path62.09.042.62.844.22.7
no access intended6.94.712.71.912.21.8
total100.0.100.0.100.0.
Switzerlandroad and skidding track13.83.336.10.835.30.8
road and skidding road8.42.716.60.716.30.7
road and cable line29.64.426.00.726.10.7
road and flight path41.74.711.80.612.90.6
no access intended6.52.49.50.59.40.5
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163535/149915

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 NFI1/NFI2/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 track0.410072.1572.55
road and skidding road1.15855.0756.07
road and cable line..8.6208.620
road and flight path0.7710.41001.158
no access intended0.77110.01810.718
total2.935146.02148.92
Eastern Juraroad and skidding track0.410028.1828.58
road and skidding road..15.81315.813
road and cable line..1.6491.649
road and flight path......
no access intended..1.2571.257
total0.410046.6347.03
Western Plateauroad and skidding track..34.0734.07
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..47.2447.24
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..83.3483.34
road and skidding road..18.61318.613
road and cable line..5.4255.425
road and flight path..0.41000.4100
no access intended..2.5372.537
total..110.12110.12
Western Pre-Alpsroad and skidding track..12.61512.615
road and skidding road..3.3333.333
road and cable line..16.61216.612
road and flight path0.41001.9442.240
no access intended..6.3236.323
total0.410040.7441.14
Central Pre-Alpsroad and skidding track..12.91612.916
road and skidding road0.77117.61318.313
road and cable line0.410031.2931.69
road and flight path0.41004.7275.026
no access intended..26.91026.910
total1.45093.2394.72
Eastern Pre-Alpsroad and skidding track0.77126.11026.810
road and skidding road..11.11711.117
road and cable line0.410018.61218.912
road and flight path..5.4255.425
no access intended..6.8226.822
total1.15767.9368.93
Northwestern Alpsroad and skidding track0.41004.7275.026
road and skidding road0.41002.9353.233
road and cable line2.53731.8834.37
road and flight path0.7715.0265.724
no access intended0.41006.1236.423
total4.32850.4554.74
Central Alpsroad and skidding track0.31000.7701.057
road and skidding road..1.4501.450
road and cable line2.1408.61810.715
road and flight path0.7703.1323.829
no access intended0.31004.8255.224
total3.43018.61022.18
Northeastern Alpsroad and skidding track..2.2402.240
road and skidding road..2.1402.140
road and cable line1.84415.81217.511
road and flight path1.1572.5373.630
no access intended0.41002.9343.232
total3.23225.4828.76
Southwestern Alpsroad and skidding track1.74416.11417.813
road and skidding road0.7715.1255.824
road and cable line1.74433.3935.09
road and flight path4.12928.11032.39
no access intended..2.7352.735
total8.22085.4493.73
Southeastern Alpsroad and skidding track0.410030.61030.910
road and skidding road..6.0246.024
road and cable line0.410056.6656.96
road and flight path1.45023.41124.811
no access intended..0.41000.4100
total2.141116.93119.03
Southern Alpsroad and skidding track0.7713.2333.930
road and skidding road0.41009.91810.218
road and cable line2.14135.7937.99
road and flight path6.42346.4852.87
no access intended0.77113.81514.515
total10.318109.04119.33
Switzerlandroad and skidding track5.326370.02375.22
road and skidding road3.233170.74173.94
road and cable line11.317266.63277.93
road and flight path15.815121.15137.05
no access intended2.53897.56100.06
total38.091025.911063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #163536/149916
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