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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago30.712.8..30.04.417.64.619.06.19.84.722.32.5
11-20 years ago23.211.7..17.33.619.14.826.26.87.34.117.92.3
21-30 years ago15.410.0..17.33.613.24.111.95.09.74.614.22.1
31-40 years ago23.011.7..9.12.75.92.97.14.07.34.18.41.7
41-50 years ago....10.93.06.02.99.54.57.34.18.41.7
over 50 years ago7.77.4..15.53.538.25.926.26.858.57.728.82.7
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago52.62.276.11.636.41.623.02.923.42.510.31.643.40.8
11-20 years ago24.21.914.31.323.31.412.92.317.82.37.41.318.00.7
21-30 years ago9.01.25.00.811.71.16.91.716.32.29.41.59.40.5
31-40 years ago5.71.01.90.57.90.96.41.711.91.98.11.46.40.4
41-50 years ago3.60.81.10.46.20.89.72.05.21.36.51.34.70.4
over 50 years ago5.00.91.70.514.51.241.03.325.42.658.32.518.10.6
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 #164711/151093

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.450..11.7174.1282.8351.45021.513
11-20 years ago1.158..6.7234.4273.9301.15817.214
21-30 years ago0.771..6.7233.1331.8441.45013.716
31-40 years ago1.158..3.5311.4501.1581.1588.121
41-50 years ago....4.3291.4501.4501.1588.121
over 50 years ago0.4100..6.0248.9193.9308.62027.711
total4.727..39.0923.31114.81514.61596.46
outside perimeterless than 10 years ago99.44195.62111.5517.11323.71113.915461.22
11-20 years ago45.8836.8971.469.61818.01310.018191.54
21-30 years ago16.91412.71635.7105.12516.51412.81699.86
31-40 years ago10.8185.02724.2124.82612.01610.91767.67
41-50 years ago6.9232.83518.9137.2215.3258.82049.98
over 50 years ago9.4194.22944.2930.5925.61178.95192.94
total189.22257.11305.9274.34101.13135.431062.91
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 #164712/151094

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years) %± %± %±
AGless than 10 years ago..82.83.382.83.3
11-20 years ago..11.52.911.52.9
21-30 years ago..1.61.21.61.2
31-40 years ago......
41-50 years ago..2.51.42.51.4
over 50 years ago..1.61.21.61.2
total..100.0.100.0.
AIless than 10 years ago..22.711.918.59.9
11-20 years ago33.328.045.414.143.212.6
21-30 years ago..7.67.56.26.1
31-40 years ago..7.67.56.26.1
41-50 years ago66.727.9..12.38.4
over 50 years ago..16.810.813.78.9
total100.0.100.0.100.0.
ARless than 10 years ago..33.39.832.09.5
11-20 years ago..37.510.136.09.8
21-30 years ago100.0.16.77.720.08.1
31-40 years ago..8.35.78.05.5
41-50 years ago......
over 50 years ago..4.24.24.04.0
total100.0.100.0.100.0.
BEless than 10 years ago38.07.553.62.352.32.2
11-20 years ago19.36.118.41.818.41.7
21-30 years ago21.46.310.01.410.91.4
31-40 years ago4.73.35.51.15.41.0
41-50 years ago7.14.04.00.94.20.9
over 50 years ago9.54.58.61.38.71.3
total100.0.100.0.100.0.
BL/BSless than 10 years ago..51.27.051.27.0
11-20 years ago..31.56.531.56.5
21-30 years ago..7.93.87.93.8
31-40 years ago..3.92.83.92.8
41-50 years ago..1.61.61.61.6
over 50 years ago..3.92.83.92.8
total..100.0.100.0.
FRless than 10 years ago66.727.355.94.756.24.7
11-20 years ago..19.83.819.33.7
21-30 years ago..4.52.04.31.9
31-40 years ago33.327.37.22.57.92.5
41-50 years ago..4.52.04.41.9
over 50 years ago..8.12.67.92.5
total100.0.100.0.100.0.
GEless than 10 years ago..59.119.559.119.5
11-20 years ago......
21-30 years ago..40.919.640.919.6
31-40 years ago......
41-50 years ago......
over 50 years ago......
total..100.0.100.0.
GLless than 10 years ago27.513.629.47.928.96.8
11-20 years ago27.513.620.67.022.36.3
21-30 years ago9.28.823.57.320.06.0
31-40 years ago9.28.85.94.16.73.8
41-50 years ago9.28.85.94.16.73.8
over 50 years ago17.511.314.76.115.45.4
total100.0.100.0.100.0.
GRless than 10 years ago14.64.521.62.020.71.8
11-20 years ago21.05.217.11.817.61.7
21-30 years ago14.54.515.41.815.31.6
31-40 years ago11.34.011.11.511.11.4
41-50 years ago9.73.85.61.16.21.1
over 50 years ago29.05.829.12.229.12.1
total100.0.100.0.100.0.
JUless than 10 years ago..57.75.456.45.3
11-20 years ago50.035.521.24.521.94.4
21-30 years ago..8.23.08.12.9
31-40 years ago50.035.55.92.66.92.7
41-50 years ago..3.41.93.31.9
over 50 years ago..3.52.03.52.0
total100.0.100.0.100.0.
LUless than 10 years ago..59.14.458.14.4
11-20 years ago50.035.525.63.926.03.9
21-30 years ago..6.52.26.42.2
31-40 years ago50.035.55.62.16.32.2
41-50 years ago..2.41.42.41.3
over 50 years ago..0.80.80.80.8
total100.0.100.0.100.0.
NEless than 10 years ago66.727.375.34.675.14.6
11-20 years ago..13.03.712.53.5
21-30 years ago33.327.42.92.03.92.2
31-40 years ago..5.02.44.82.4
41-50 years ago..1.51.41.41.4
over 50 years ago..2.41.72.31.6
total100.0.100.0.100.0.
NWless than 10 years ago..29.411.325.09.9
11-20 years ago66.727.735.311.840.011.2
21-30 years ago..11.88.010.06.9
31-40 years ago......
41-50 years ago......
over 50 years ago33.327.823.510.525.09.9
total100.0.100.0.100.0.
OWless than 10 years ago20.018.143.67.341.27.0
11-20 years ago20.018.117.45.617.75.4
21-30 years ago..6.33.65.73.2
31-40 years ago..2.22.22.02.0
41-50 years ago..10.94.69.84.2
over 50 years ago60.022.119.65.923.66.0
total100.0.100.0.100.0.
SGless than 10 years ago50.015.840.74.241.34.0
11-20 years ago10.09.524.33.623.33.5
21-30 years ago10.09.510.02.510.02.5
31-40 years ago..8.62.48.02.2
41-50 years ago10.09.52.11.22.71.3
over 50 years ago20.012.714.33.014.72.9
total100.0.100.0.100.0.
SHless than 10 years ago..52.88.452.88.4
11-20 years ago..33.37.933.37.9
21-30 years ago..11.15.311.15.3
31-40 years ago......
41-50 years ago......
over 50 years ago..2.82.82.82.8
total..100.0.100.0.
SOless than 10 years ago..54.85.554.85.5
11-20 years ago..26.24.826.24.8
21-30 years ago..2.41.72.41.7
31-40 years ago..6.02.66.02.6
41-50 years ago..2.41.72.41.7
over 50 years ago..8.33.08.33.0
total..100.0.100.0.
SZless than 10 years ago16.715.343.05.941.05.6
11-20 years ago16.715.320.84.820.54.6
21-30 years ago33.319.34.22.46.42.8
31-40 years ago..6.93.06.42.8
41-50 years ago16.715.36.93.07.73.0
over 50 years ago16.715.318.14.618.04.4
total100.0.100.0.100.0.
TGless than 10 years ago..73.05.273.05.2
11-20 years ago..12.64.012.64.0
21-30 years ago..12.64.012.64.0
31-40 years ago..1.81.81.81.8
41-50 years ago......
over 50 years ago......
total..100.0.100.0.
TIless than 10 years ago7.45.010.01.79.71.6
11-20 years ago7.45.07.61.57.61.5
21-30 years ago7.45.08.61.68.51.5
31-40 years ago7.45.07.91.67.91.5
41-50 years ago3.73.67.21.57.01.4
over 50 years ago66.79.158.72.859.32.7
total100.0.100.0.100.0.
URless than 10 years ago30.014.634.07.233.26.5
11-20 years ago20.012.79.04.311.04.3
21-30 years ago..16.05.613.14.6
31-40 years ago20.012.711.24.812.84.6
41-50 years ago10.09.57.03.97.63.7
over 50 years ago20.012.722.86.422.35.7
total100.0.100.0.100.0.
VDless than 10 years ago27.313.444.83.244.13.1
11-20 years ago..23.62.722.62.6
21-30 years ago36.414.511.62.012.72.1
31-40 years ago9.18.75.61.55.81.4
41-50 years ago18.211.66.41.56.91.6
over 50 years ago9.18.78.01.78.01.7
total100.0.100.0.100.0.
VSless than 10 years ago19.24.623.32.722.32.3
11-20 years ago17.84.513.52.214.52.0
21-30 years ago12.33.87.71.78.81.6
31-40 years ago6.83.06.51.66.61.4
41-50 years ago6.93.010.21.99.51.6
over 50 years ago37.05.738.83.138.32.7
total100.0.100.0.100.0.
ZGless than 10 years ago..92.97.192.97.1
11-20 years ago......
21-30 years ago..7.17.17.17.1
31-40 years ago......
41-50 years ago......
over 50 years ago......
total..100.0.100.0.
ZHless than 10 years ago..73.83.773.83.7
11-20 years ago..16.53.116.53.1
21-30 years ago..5.51.95.51.9
31-40 years ago..3.41.53.41.5
41-50 years ago......
over 50 years ago..0.70.70.70.7
total..100.0.100.0.
Switzerlandless than 10 years ago22.22.543.50.841.70.8
11-20 years ago17.92.318.00.718.00.7
21-30 years ago14.22.19.40.59.80.5
31-40 years ago8.41.76.30.46.50.4
41-50 years ago8.41.74.70.45.00.4
over 50 years ago28.92.718.10.619.00.6
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164713/151095

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %
AGless than 10 years ago..40.7540.75
11-20 years ago..5.6255.625
21-30 years ago..0.8700.870
31-40 years ago......
41-50 years ago..1.2571.257
over 50 years ago..0.8700.870
total..49.1249.12
AIless than 10 years ago..1.0541.054
11-20 years ago0.31001.9342.330
21-30 years ago..0.31000.3100
31-40 years ago..0.31000.3100
41-50 years ago0.669..0.669
over 50 years ago..0.7710.771
total1.0544.3185.212
ARless than 10 years ago..2.6302.630
11-20 years ago..2.9282.928
21-30 years ago0.31001.3471.641
31-40 years ago..0.6690.669
41-50 years ago......
over 50 years ago..0.31000.3100
total0.31007.768.05
BEless than 10 years ago5.52583.1588.65
11-20 years ago2.83528.51031.310
21-30 years ago3.13315.51418.513
31-40 years ago0.7718.5209.219
41-50 years ago1.0586.2237.221
over 50 years ago1.45013.31514.715
total14.415155.12169.52
BL/BSless than 10 years ago..10.61410.614
11-20 years ago..6.5216.521
21-30 years ago..1.6491.649
31-40 years ago..0.8700.870
41-50 years ago..0.31000.3100
over 50 years ago..0.8700.870
total..20.7520.75
FRless than 10 years ago0.77023.2923.99
11-20 years ago..8.2208.220
21-30 years ago..1.9441.944
31-40 years ago0.41003.0343.432
41-50 years ago..1.9441.944
over 50 years ago..3.4323.432
total1.15741.5342.63
GEless than 10 years ago..1.8361.836
11-20 years ago......
21-30 years ago..1.3541.354
31-40 years ago......
41-50 years ago......
over 50 years ago......
total..3.1203.120
GLless than 10 years ago1.2573.9295.024
11-20 years ago1.2572.7363.929
21-30 years ago0.41003.1333.531
31-40 years ago0.41000.8701.257
41-50 years ago0.41000.8701.257
over 50 years ago0.7711.9432.736
total4.22813.11117.37
GRless than 10 years ago3.23331.81035.09
11-20 years ago4.52725.11129.710
21-30 years ago3.13322.61225.711
31-40 years ago2.43816.31418.813
41-50 years ago2.1418.32010.418
over 50 years ago6.32342.8849.17
total21.612147.03168.62
JUless than 10 years ago..19.11019.110
11-20 years ago0.41007.0217.420
21-30 years ago..2.7362.736
31-40 years ago0.41001.9442.340
41-50 years ago..1.1581.158
over 50 years ago..1.2571.257
total0.87033.1333.93
LUless than 10 years ago..23.3823.38
11-20 years ago0.310010.11610.415
21-30 years ago..2.6352.635
31-40 years ago0.31002.2372.534
41-50 years ago..0.9570.957
over 50 years ago..0.31000.3100
total0.67039.4340.03
NEless than 10 years ago0.67020.5721.17
11-20 years ago..3.5283.528
21-30 years ago0.31000.8701.158
31-40 years ago..1.4501.450
41-50 years ago..0.41000.4100
over 50 years ago..0.6700.670
total1.05727.2528.24
NWless than 10 years ago..1.9401.940
11-20 years ago0.8692.3363.129
21-30 years ago..0.8690.869
31-40 years ago......
41-50 years ago......
over 50 years ago0.41001.5461.940
total1.2556.5137.78
OWless than 10 years ago0.41007.5187.817
11-20 years ago0.41003.0333.431
21-30 years ago..1.1571.157
31-40 years ago..0.41000.4100
41-50 years ago..1.9431.943
over 50 years ago1.1573.4314.526
total1.94317.2619.04
SGless than 10 years ago1.84420.61122.411
11-20 years ago0.410012.31612.615
21-30 years ago0.41005.1265.425
31-40 years ago..4.3284.328
41-50 years ago0.41001.1571.450
over 50 years ago0.7707.2218.020
total3.63150.6554.24
SHless than 10 years ago..6.8166.816
11-20 years ago..4.3244.324
21-30 years ago..1.4481.448
31-40 years ago......
41-50 years ago......
over 50 years ago..0.41000.4100
total..12.8312.83
SOless than 10 years ago..17.41117.411
11-20 years ago..8.3198.319
21-30 years ago..0.8700.870
31-40 years ago..1.9441.944
41-50 years ago..0.8700.870
over 50 years ago..2.6362.636
total..31.8331.83
SZless than 10 years ago0.410011.21511.614
11-20 years ago0.41005.4245.823
21-30 years ago0.7701.1571.844
31-40 years ago..1.8441.844
41-50 years ago0.41001.8442.240
over 50 years ago0.41004.7265.125
total2.24026.1628.35
TGless than 10 years ago..15.5815.58
11-20 years ago..2.7312.731
21-30 years ago..2.7312.731
31-40 years ago..0.41000.4100
41-50 years ago......
over 50 years ago......
total..21.3321.33
TIless than 10 years ago0.77110.71811.517
11-20 years ago0.7718.2209.019
21-30 years ago0.7719.31910.018
31-40 years ago0.7718.5209.319
41-50 years ago0.41007.8218.220
over 50 years ago6.52363.3669.85
total9.719108.03117.72
URless than 10 years ago1.0575.0246.021
11-20 years ago0.7701.3492.039
21-30 years ago..2.4372.437
31-40 years ago0.7701.7442.336
41-50 years ago0.31001.0581.450
over 50 years ago0.7703.3304.027
total3.33014.71118.09
VDless than 10 years ago1.15842.4743.67
11-20 years ago..22.31222.312
21-30 years ago1.55011.01812.516
31-40 years ago0.41005.3265.725
41-50 years ago0.8716.1246.823
over 50 years ago0.41007.5227.921
total4.23094.7398.92
VSless than 10 years ago4.82619.61224.411
11-20 years ago4.52711.31715.814
21-30 years ago3.1336.5229.618
31-40 years ago1.7445.5257.221
41-50 years ago1.7458.61910.318
over 50 years ago9.31932.6941.88
total25.01184.14109.13
ZGless than 10 years ago..5.695.69
11-20 years ago......
21-30 years ago..0.41000.4100
31-40 years ago......
41-50 years ago......
over 50 years ago......
total..6.066.06
ZHless than 10 years ago..37.7637.76
11-20 years ago..8.5198.519
21-30 years ago..2.8352.835
31-40 years ago..1.8441.844
41-50 years ago......
over 50 years ago..0.41000.4100
total..51.1251.12
Switzerlandless than 10 years ago21.413463.42484.82
11-20 years ago17.214192.14209.34
21-30 years ago13.61699.76113.45
31-40 years ago8.12167.5775.57
41-50 years ago8.12150.1858.28
over 50 years ago27.711193.24221.03
total96.161066.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164714/151096

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %±
inside perimeterless than 10 years ago30.812.8..22.26.924.23.110.34.922.22.5
11-20 years ago23.011.7..25.07.218.32.87.74.317.92.3
21-30 years ago15.410.0..13.95.815.02.610.24.914.22.1
31-40 years ago23.111.7..5.63.88.12.07.74.38.41.7
41-50 years ago....19.46.67.61.95.13.58.41.7
over 50 years ago7.77.4..13.95.826.93.359.07.928.82.7
total100.0...100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago54.62.275.31.745.32.125.51.59.91.643.50.8
11-20 years ago24.41.914.01.424.71.817.31.37.31.318.00.7
21-30 years ago7.81.25.70.98.51.213.81.29.11.59.40.5
31-40 years ago4.80.92.30.67.81.18.71.08.01.46.40.4
41-50 years ago3.90.80.90.44.40.97.30.96.71.34.70.4
over 50 years ago4.50.91.80.59.21.227.31.559.02.518.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago54.02.175.31.743.92.025.31.310.01.541.70.8
11-20 years ago24.41.814.01.424.71.817.41.27.31.318.00.7
21-30 years ago8.01.25.70.98.81.214.01.19.21.49.80.5
31-40 years ago5.31.02.30.67.71.18.60.98.01.36.50.4
41-50 years ago3.80.80.90.45.30.97.40.86.51.25.00.4
over 50 years ago4.50.91.80.59.51.227.31.459.02.419.00.6
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 #164715/151097

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.550..2.93515.5151.45021.313
11-20 years ago1.158..3.23311.7171.15817.114
21-30 years ago0.771..1.8459.7191.45013.616
31-40 years ago1.158..0.7715.2261.1588.121
41-50 years ago....2.5384.9270.7718.121
over 50 years ago0.4100..1.84517.3148.22027.611
total4.727..13.01664.3713.81595.96
outside perimeterless than 10 years ago107.04172.5391.9577.3613.116461.82
11-20 years ago47.8832.01050.1852.289.619191.74
21-30 years ago15.31513.01617.31441.7912.01799.36
31-40 years ago9.5195.32615.91526.41110.61867.67
41-50 years ago7.7222.1419.02022.2128.82049.88
over 50 years ago8.8204.22918.71382.7677.85192.24
total196.01229.11202.92302.42131.931062.41
totalless than 10 years ago108.44172.5394.8592.8514.515483.12
11-20 years ago48.9832.01053.3764.0710.618208.94
21-30 years ago16.11513.01619.11351.4813.416113.05
31-40 years ago10.6185.32616.61431.51011.61775.67
41-50 years ago7.7222.14111.51727.1119.51957.98
over 50 years ago9.1204.22920.513100.0586.05219.83
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164716/151098

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · 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
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago30.712.834.56.229.27.119.24.614.04.910.34.922.32.5
11-20 years ago23.211.717.25.019.56.217.84.524.06.07.74.317.92.3
21-30 years ago15.410.020.75.312.25.112.33.814.04.910.24.914.32.1
31-40 years ago23.111.75.22.97.34.16.83.012.04.67.74.38.41.7
41-50 years ago..8.63.714.65.56.93.010.04.25.13.58.41.7
over 50 years ago7.77.413.84.517.25.937.05.726.06.259.07.928.82.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago65.91.441.22.238.32.723.32.724.02.39.91.643.50.8
11-20 years ago18.71.122.51.922.62.313.52.219.42.17.31.318.00.7
21-30 years ago6.60.710.91.411.31.87.71.716.22.09.11.59.40.5
31-40 years ago3.40.57.11.18.21.56.51.611.71.78.01.46.40.4
41-50 years ago2.30.45.91.03.91.110.21.95.91.36.71.34.70.4
over 50 years ago3.00.512.41.515.72.038.83.122.82.259.02.518.10.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago65.51.440.52.137.32.522.32.322.82.110.01.541.70.8
11-20 years ago18.71.121.91.722.22.214.52.020.02.07.31.318.00.7
21-30 years ago6.70.711.91.411.41.78.81.615.91.89.21.49.80.5
31-40 years ago3.70.56.91.18.11.46.61.411.71.68.01.36.50.4
41-50 years ago2.30.46.21.05.11.19.51.66.41.26.51.25.00.4
over 50 years ago3.10.512.61.415.91.938.32.723.22.159.02.419.00.6
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 #164717/151099

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · 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
avalanches SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.4507.2224.1284.8262.5381.45021.513
11-20 years ago1.1583.6312.8354.5274.2281.15817.214
21-30 years ago0.7714.3291.7443.1332.5381.45013.716
31-40 years ago1.1581.1581.0581.7442.1411.1588.121
41-50 years ago..1.8452.1411.7451.8450.7718.121
over 50 years ago0.41002.9352.4389.3194.6278.22027.711
total4.72820.91314.21525.01117.61313.81596.26
outside perimeterless than 10 years ago280.4275.4644.3819.61229.61013.116462.32
11-20 years ago79.4641.1926.11111.31723.9119.619191.44
21-30 years ago28.31119.81313.1166.52220.01312.01799.76
31-40 years ago14.71513.0169.5195.52514.41510.61867.57
41-50 years ago9.71910.8184.5278.6197.3218.82049.78
over 50 years ago12.91622.71218.11332.6928.01077.85192.14
total425.31182.82115.5384.14123.13131.931062.71
totalless than 10 years ago281.8282.6548.4724.41132.0914.515483.72
11-20 years ago80.5644.7828.81015.81428.11010.618208.64
21-30 years ago29.01124.21214.8159.61822.41213.416113.45
31-40 years ago15.71514.11610.5187.22116.51411.61775.67
41-50 years ago9.71912.6166.62210.3189.1199.51957.88
over 50 years ago13.21625.61120.61241.8832.6986.05219.83
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164718/151100

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years) %± %± %±
Western Juraless than 10 years ago30.712.854.42.453.72.4
11-20 years ago23.311.822.72.122.72.0
21-30 years ago15.310.08.71.48.91.4
31-40 years ago23.011.75.31.15.81.1
41-50 years ago..4.41.04.21.0
over 50 years ago7.77.44.61.04.71.0
total100.0.100.0.100.0.
Eastern Juraless than 10 years ago..55.04.555.04.5
11-20 years ago..30.44.230.44.2
21-30 years ago..4.92.04.92.0
31-40 years ago..3.31.63.31.6
41-50 years ago..2.31.32.31.3
over 50 years ago..4.11.84.11.8
total..100.0.100.0.
Western Plateauless than 10 years ago..64.54.464.54.4
11-20 years ago..15.23.315.23.3
21-30 years ago..8.42.68.42.6
31-40 years ago..3.41.73.41.7
41-50 years ago..4.31.94.31.9
over 50 years ago..4.31.94.31.9
total..100.0.100.0.
Central Plateauless than 10 years ago..77.72.877.72.8
11-20 years ago..15.12.415.12.4
21-30 years ago..3.21.23.21.2
31-40 years ago..2.31.02.31.0
41-50 years ago......
over 50 years ago..1.80.91.80.9
total..100.0.100.0.
Eastern Plateauless than 10 years ago..77.62.477.62.4
11-20 years ago..12.81.912.81.9
21-30 years ago..6.41.46.41.4
31-40 years ago..1.90.81.90.8
41-50 years ago..0.30.30.30.3
over 50 years ago..1.00.61.00.6
total..100.0.100.0.
Western Pre-Alpsless than 10 years ago44.716.638.44.638.94.4
11-20 years ago10.610.122.34.021.53.7
21-30 years ago11.210.611.53.011.52.9
31-40 years ago11.210.610.72.910.82.8
41-50 years ago22.314.06.32.37.52.4
over 50 years ago..10.72.99.92.7
total100.0.100.0.100.0.
Central Pre-Alpsless than 10 years ago10.57.149.43.146.73.0
11-20 years ago36.811.124.92.725.72.7
21-30 years ago15.88.47.51.78.11.7
31-40 years ago5.35.15.91.55.91.4
41-50 years ago5.35.14.71.34.81.3
over 50 years ago26.310.17.51.78.81.7
total100.0.100.0.100.0.
Eastern Pre-Alpsless than 10 years ago25.015.343.93.543.23.5
11-20 years ago12.511.725.83.125.23.0
21-30 years ago12.511.78.11.98.31.9
31-40 years ago..8.62.08.31.9
41-50 years ago50.017.73.01.24.91.5
over 50 years ago..10.62.210.22.1
total100.0.100.0.100.0.
Northwestern Alpsless than 10 years ago46.79.128.93.832.03.6
11-20 years ago6.74.618.33.316.32.8
21-30 years ago26.78.116.23.118.02.9
31-40 years ago3.33.36.32.05.81.8
41-50 years ago6.74.67.72.27.52.0
over 50 years ago10.05.522.53.520.43.1
total100.0.100.0.100.0.
Central Alpsless than 10 years ago26.711.533.26.032.05.3
11-20 years ago20.010.411.03.912.73.8
21-30 years ago13.38.812.94.313.03.8
31-40 years ago13.38.89.43.710.23.4
41-50 years ago6.76.56.43.16.52.8
over 50 years ago20.010.427.05.625.75.0
total100.0.100.0.100.0.
Northeastern Alpsless than 10 years ago33.311.128.25.429.24.8
11-20 years ago22.29.823.95.123.64.5
21-30 years ago11.17.418.34.616.94.0
31-40 years ago5.65.45.62.75.62.4
41-50 years ago5.65.44.22.44.52.2
over 50 years ago22.39.819.74.720.24.3
total100.0.100.0.100.0.
Southwestern Alpsless than 10 years ago19.24.623.32.722.32.3
11-20 years ago17.84.513.52.214.52.0
21-30 years ago12.33.87.71.78.81.6
31-40 years ago6.83.06.51.66.61.4
41-50 years ago6.93.010.21.99.51.6
over 50 years ago37.05.738.83.138.32.7
total100.0.100.0.100.0.
Southeastern Alpsless than 10 years ago14.04.924.02.322.82.1
11-20 years ago24.06.019.42.120.02.0
21-30 years ago14.04.916.22.015.91.8
31-40 years ago12.04.611.71.711.71.6
41-50 years ago10.04.25.91.36.41.2
over 50 years ago26.06.222.82.223.22.1
total100.0.100.0.100.0.
Southern Alpsless than 10 years ago10.34.99.91.610.01.5
11-20 years ago7.74.37.31.37.31.3
21-30 years ago10.24.99.11.59.21.4
31-40 years ago7.74.38.01.48.01.3
41-50 years ago5.13.56.71.36.51.2
over 50 years ago59.07.959.02.559.02.4
total100.0.100.0.100.0.
Switzerlandless than 10 years ago22.42.543.30.841.60.8
11-20 years ago17.92.318.10.718.10.7
21-30 years ago14.22.19.40.59.80.5
31-40 years ago8.41.76.40.46.50.4
41-50 years ago8.41.74.70.45.00.4
over 50 years ago28.72.718.10.619.00.6
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164719/151101

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago1.45080.7582.15
11-20 years ago1.15833.6934.79
21-30 years ago0.77112.91613.616
31-40 years ago1.1587.9218.920
41-50 years ago..6.5236.523
over 50 years ago0.41006.8227.122
total4.627148.22152.82
Eastern Juraless than 10 years ago..26.5826.58
11-20 years ago..14.61414.614
21-30 years ago..2.4402.440
31-40 years ago..1.6491.649
41-50 years ago..1.1581.158
over 50 years ago..2.0442.044
total..48.2248.22
Western Plateauless than 10 years ago..31.2831.28
11-20 years ago..7.4227.422
21-30 years ago..4.1314.131
31-40 years ago..1.6491.649
41-50 years ago..2.1442.144
over 50 years ago..2.1442.144
total..48.4348.43
Central Plateauless than 10 years ago..53.4453.44
11-20 years ago..10.41610.416
21-30 years ago..2.2372.237
31-40 years ago..1.5441.544
41-50 years ago......
over 50 years ago..1.2501.250
total..68.7268.72
Eastern Plateauless than 10 years ago..86.9386.93
11-20 years ago..14.31514.315
21-30 years ago..7.1227.122
31-40 years ago..2.1412.141
41-50 years ago..0.41000.4100
over 50 years ago..1.1581.158
total..111.92111.92
Western Pre-Alpsless than 10 years ago1.54915.91317.412
11-20 years ago0.41009.3189.618
21-30 years ago0.41004.8275.126
31-40 years ago0.41004.4284.826
41-50 years ago0.7702.6373.332
over 50 years ago..4.4284.428
total3.33341.4444.84
Central Pre-Alpsless than 10 years ago0.77144.8745.57
11-20 years ago2.53722.61125.111
21-30 years ago1.1586.8227.921
31-40 years ago0.41005.4255.724
41-50 years ago0.41004.3284.727
over 50 years ago1.8446.8228.620
total6.82290.7397.52
Eastern Pre-Alpsless than 10 years ago0.77131.1931.88
11-20 years ago0.410018.21318.612
21-30 years ago0.41005.7246.123
31-40 years ago..6.1236.123
41-50 years ago1.4502.1403.631
over 50 years ago..7.5217.521
total2.93570.7373.63
Northwestern Alpsless than 10 years ago5.02614.71419.712
11-20 years ago0.7719.31810.018
21-30 years ago2.9358.22011.117
31-40 years ago0.41003.2333.631
41-50 years ago0.7713.9294.627
over 50 years ago1.15711.41612.516
total10.71750.8561.54
Central Alpsless than 10 years ago1.4497.2208.618
11-20 years ago1.0572.4373.430
21-30 years ago0.7702.8353.531
31-40 years ago0.7702.1402.734
41-50 years ago0.31001.4501.744
over 50 years ago1.0575.9236.921
total5.22421.8927.07
Northeastern Alpsless than 10 years ago2.1407.2219.318
11-20 years ago1.4496.1227.520
21-30 years ago0.7704.7265.424
31-40 years ago0.41001.4491.844
41-50 years ago0.41001.1571.449
over 50 years ago1.4505.0256.422
total6.42225.4831.96
Southwestern Alpsless than 10 years ago4.82619.61224.411
11-20 years ago4.52711.31715.814
21-30 years ago3.1336.5229.618
31-40 years ago1.7445.5257.221
41-50 years ago1.7458.61910.318
over 50 years ago9.31932.6941.88
total25.01184.14109.13
Southeastern Alpsless than 10 years ago2.53829.61032.09
11-20 years ago4.22823.91128.110
21-30 years ago2.53820.01322.412
31-40 years ago2.14114.41516.514
41-50 years ago1.8457.3219.119
over 50 years ago4.62728.01032.69
total17.613123.13140.62
Southern Alpsless than 10 years ago1.45013.11614.515
11-20 years ago1.1589.61910.618
21-30 years ago1.45012.01713.416
31-40 years ago1.15810.61811.617
41-50 years ago0.7718.8209.519
over 50 years ago8.22077.8586.05
total13.815131.93145.72
Switzerlandless than 10 years ago21.613461.72483.32
11-20 years ago17.214192.94210.14
21-30 years ago13.716100.16113.85
31-40 years ago8.12167.8775.97
41-50 years ago8.12150.2858.38
over 50 years ago27.711192.74220.33
total96.461065.311161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164720/151102

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · degree of mixture · 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
avalanches SilvaProtect, modelled and assigneddegree of mixture %± %± %± %± %± %± %±
inside perimetern/a....3.61.83.02.14.83.3..2.91.0
pure conifer forest15.410.0..46.44.889.63.785.75.483.05.966.92.8
mixed conifer forest77.011.7..27.34.24.42.52.42.4..16.22.2
mixed broadleaf forest7.77.4..10.93.0..4.83.34.93.46.31.5
pure broadleaf forest....11.83.12.92.02.42.412.25.17.71.6
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.60.30.80.31.90.52.81.12.81.01.60.61.50.2
pure conifer forest27.01.923.21.647.91.768.73.282.62.230.52.440.80.8
mixed conifer forest24.41.925.41.620.11.46.51.74.51.27.21.318.10.7
mixed broadleaf forest22.11.817.51.412.11.17.41.83.91.17.11.313.40.6
pure broadleaf forest25.91.933.01.717.91.314.72.46.21.453.62.626.20.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.60.30.80.32.10.52.81.03.01.01.40.61.60.2
pure conifer forest26.81.923.21.647.81.673.72.683.02.135.62.343.00.8
mixed conifer forest25.61.925.41.620.91.36.01.44.21.16.51.217.90.7
mixed broadleaf forest21.81.817.51.412.01.05.61.44.01.16.91.212.80.6
pure broadleaf forest25.31.933.01.717.21.211.91.95.71.349.52.424.70.7
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 #164721/151103

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · degree of mixture · 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
avalanches SilvaProtect, modelled and assigneddegree of mixture1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....1.4500.7710.771..2.835
pure conifer forest0.771..18.11420.91212.71612.11764.57
mixed conifer forest3.631..10.6181.0580.4100..15.615
mixed broadleaf forest0.4100..4.329..0.7710.7716.024
pure broadleaf forest....4.6280.7710.41001.8457.422
total4.727..39.0923.31114.81514.61596.46
outside perimetern/a1.1582.1415.8252.1412.8352.14116.015
pure conifer forest51.2759.87146.7451.0683.5441.38433.42
mixed conifer forest46.1865.4661.674.8264.5279.818192.24
mixed broadleaf forest41.8844.9837.195.5243.9309.619142.85
pure broadleaf forest49.0884.9554.8810.9176.32372.55278.43
total189.22257.11305.9274.34101.13135.431062.91
totaln/a1.1582.1417.2222.8353.5312.14118.814
pure conifer forest51.9759.87164.7471.9496.2353.47498.02
mixed conifer forest49.7765.4672.265.8244.9269.818207.94
mixed broadleaf forest42.2844.9841.395.5244.62710.318148.95
pure broadleaf forest49.0884.9559.4711.6166.72374.35285.93
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164722/151104

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · degree of mixture · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of mixture %± %± %±
AGn/a..0.80.80.80.8
pure conifer forest..16.43.416.43.4
mixed conifer forest..18.03.518.03.5
mixed broadleaf forest..18.93.518.93.5
pure broadleaf forest..45.94.545.94.5
total..100.0.100.0.
AIn/a..7.67.56.26.1
pure conifer forest66.727.969.713.069.211.8
mixed conifer forest33.328.022.711.924.711.0
mixed broadleaf forest......
pure broadleaf forest......
total100.0.100.0.100.0.
ARn/a......
pure conifer forest100.0.37.510.040.09.9
mixed conifer forest..25.09.024.08.7
mixed broadleaf forest..29.29.428.09.1
pure broadleaf forest..8.35.88.05.5
total100.0.100.0.100.0.
BEn/a7.14.01.50.62.00.6
pure conifer forest45.17.741.12.341.42.2
mixed conifer forest28.67.024.92.025.22.0
mixed broadleaf forest7.14.013.71.613.11.5
pure broadleaf forest12.05.018.81.818.21.7
total100.0.100.0.100.0.
BL/BSn/a......
pure conifer forest..5.93.35.93.3
mixed conifer forest..15.75.115.75.1
mixed broadleaf forest..21.65.821.65.8
pure broadleaf forest..56.77.056.77.0
total..100.0.100.0.
FRn/a33.327.31.81.32.61.5
pure conifer forest33.327.339.64.739.54.6
mixed conifer forest33.327.315.33.415.83.4
mixed broadleaf forest..18.03.717.53.6
pure broadleaf forest..25.34.124.64.0
total100.0.100.0.100.0.
GEn/a..14.814.614.814.6
pure conifer forest......
mixed conifer forest..14.814.614.814.6
mixed broadleaf forest......
pure broadleaf forest..70.518.770.518.7
total..100.0.100.0.
GLn/a......
pure conifer forest45.015.126.57.631.06.9
mixed conifer forest27.513.626.57.626.76.6
mixed broadleaf forest9.28.85.94.16.73.8
pure broadleaf forest18.311.841.28.535.67.2
total100.0.100.0.100.0.
GRn/a3.22.23.10.83.10.8
pure conifer forest80.75.074.72.175.42.0
mixed conifer forest3.22.27.31.36.81.1
mixed broadleaf forest4.82.74.51.04.50.9
pure broadleaf forest8.13.510.51.510.21.4
total100.0.100.0.100.0.
JUn/a......
pure conifer forest..23.64.623.04.5
mixed conifer forest100.0.18.84.320.74.4
mixed broadleaf forest..22.34.521.84.4
pure broadleaf forest..35.35.234.55.1
total100.0.100.0.100.0.
LUn/a..0.80.80.80.8
pure conifer forest..46.34.545.64.4
mixed conifer forest100.0.24.83.926.03.9
mixed broadleaf forest..11.92.911.82.9
pure broadleaf forest..16.13.315.83.3
total100.0.100.0.100.0.
NEn/a......
pure conifer forest33.327.441.55.441.25.3
mixed conifer forest33.327.433.05.133.05.0
mixed broadleaf forest33.327.415.94.016.54.0
pure broadleaf forest..9.73.39.43.2
total100.0.100.0.100.0.
NWn/a......
pure conifer forest66.727.747.112.350.011.4
mixed conifer forest33.327.823.510.525.09.9
mixed broadleaf forest......
pure broadleaf forest..29.411.325.09.9
total100.0.100.0.100.0.
OWn/a..4.22.93.82.6
pure conifer forest40.022.154.57.453.07.1
mixed conifer forest20.018.115.25.315.75.1
mixed broadleaf forest40.022.18.74.211.84.6
pure broadleaf forest..17.45.615.75.1
total100.0.100.0.100.0.
SGn/a..1.41.01.30.9
pure conifer forest40.015.525.73.726.73.6
mixed conifer forest20.012.733.64.032.73.8
mixed broadleaf forest30.014.515.03.016.03.0
pure broadleaf forest10.09.524.33.623.33.5
total100.0.100.0.100.0.
SHn/a......
pure conifer forest..19.46.719.46.7
mixed conifer forest..30.67.830.67.8
mixed broadleaf forest..16.76.316.76.3
pure broadleaf forest..33.37.933.37.9
total..100.0.100.0.
SOn/a......
pure conifer forest..9.53.29.53.2
mixed conifer forest..19.04.319.04.3
mixed broadleaf forest..36.95.336.95.3
pure broadleaf forest..34.55.234.55.2
total..100.0.100.0.
SZn/a..4.22.43.82.2
pure conifer forest16.715.354.25.951.35.7
mixed conifer forest50.020.516.74.419.24.5
mixed broadleaf forest..13.94.112.83.8
pure broadleaf forest33.319.311.13.712.83.8
total100.0.100.0.100.0.
TGn/a......
pure conifer forest..18.24.618.24.6
mixed conifer forest..26.75.326.75.3
mixed broadleaf forest..25.65.225.65.2
pure broadleaf forest..29.55.429.55.4
total..100.0.100.0.
TIn/a..0.70.50.60.4
pure conifer forest81.57.524.62.529.32.5
mixed conifer forest..6.51.46.01.3
mixed broadleaf forest7.45.08.01.67.91.5
pure broadleaf forest11.16.060.32.856.22.7
total100.0.100.0.100.0.
URn/a......
pure conifer forest70.014.651.97.655.26.8
mixed conifer forest20.012.79.04.311.04.3
mixed broadleaf forest..13.85.311.34.4
pure broadleaf forest10.09.625.36.622.55.7
total100.0.100.0.100.0.
VDn/a..1.20.71.20.7
pure conifer forest27.313.438.43.137.93.0
mixed conifer forest63.614.523.22.724.92.7
mixed broadleaf forest9.18.715.22.314.92.2
pure broadleaf forest..22.02.621.12.5
total100.0.100.0.100.0.
VSn/a2.82.02.41.02.50.9
pure conifer forest87.63.865.73.070.72.6
mixed conifer forest5.52.76.51.66.31.4
mixed broadleaf forest1.41.47.31.76.01.3
pure broadleaf forest2.71.917.92.514.52.0
total100.0.100.0.100.0.
ZGn/a..7.17.17.17.1
pure conifer forest..28.612.528.612.5
mixed conifer forest..21.411.321.411.3
mixed broadleaf forest..14.39.714.39.7
pure broadleaf forest..28.612.528.612.5
total..100.0.100.0.
ZHn/a......
pure conifer forest..16.53.116.53.1
mixed conifer forest..26.93.726.93.7
mixed broadleaf forest..22.13.422.13.4
pure broadleaf forest..34.54.034.54.0
total..100.0.100.0.
Switzerlandn/a2.91.01.50.21.60.2
pure conifer forest66.72.840.40.842.60.8
mixed conifer forest16.32.218.00.717.80.7
mixed broadleaf forest6.31.513.50.612.90.6
pure broadleaf forest7.71.626.60.825.10.7
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164723/151105

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · degree of mixture · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of mixture1000 ha± %1000 ha± %1000 ha± %
AGn/a..0.41000.4100
pure conifer forest..8.0218.021
mixed conifer forest..8.9198.919
mixed broadleaf forest..9.3199.319
pure broadleaf forest..22.51022.510
total..49.1249.12
AIn/a..0.31000.3100
pure conifer forest0.6693.0273.622
mixed conifer forest0.31001.0541.345
mixed broadleaf forest......
pure broadleaf forest......
total1.0544.3185.212
ARn/a......
pure conifer forest0.31002.9273.225
mixed conifer forest..1.9361.936
mixed broadleaf forest..2.2332.233
pure broadleaf forest..0.6690.669
total0.31007.768.05
BEn/a1.0582.4383.431
pure conifer forest6.52363.7670.26
mixed conifer forest4.12938.7842.88
mixed broadleaf forest1.05821.21222.312
pure broadleaf forest1.74529.11030.810
total14.415155.12169.52
BL/BSn/a......
pure conifer forest..1.2571.257
mixed conifer forest..3.3333.333
mixed broadleaf forest..4.5274.527
pure broadleaf forest..11.71311.713
total..20.7520.75
FRn/a0.41000.7701.157
pure conifer forest0.410016.41216.812
mixed conifer forest0.41006.3236.722
mixed broadleaf forest..7.5217.521
pure broadleaf forest..10.51710.517
total1.15741.5342.63
GEn/a..0.51000.5100
pure conifer forest......
mixed conifer forest..0.51000.5100
mixed broadleaf forest......
pure broadleaf forest..2.2342.234
total..3.1203.120
GLn/a......
pure conifer forest1.9443.5315.424
mixed conifer forest1.2573.5314.626
mixed broadleaf forest0.41000.8701.257
pure broadleaf forest0.8705.4236.221
total4.22813.11117.37
GRn/a0.7714.5275.225
pure conifer forest17.513109.84127.23
mixed conifer forest0.77110.71811.417
mixed broadleaf forest1.0586.6237.721
pure broadleaf forest1.74515.41517.114
total21.612147.03168.62
JUn/a......
pure conifer forest..7.8207.820
mixed conifer forest0.8706.2237.021
mixed broadleaf forest..7.4217.421
pure broadleaf forest..11.71511.715
total0.87033.1333.93
LUn/a..0.31000.3100
pure conifer forest..18.31018.310
mixed conifer forest0.6709.81610.415
mixed broadleaf forest..4.7244.724
pure broadleaf forest..6.3216.321
total0.67039.4340.03
NEn/a......
pure conifer forest0.310011.31411.613
mixed conifer forest0.31009.0169.315
mixed broadleaf forest0.31004.3274.625
pure broadleaf forest..2.6342.634
total1.05727.2528.24
NWn/a......
pure conifer forest0.8693.1293.824
mixed conifer forest0.41001.5461.940
mixed broadleaf forest......
pure broadleaf forest..1.9401.940
total1.2556.5137.78
OWn/a..0.7710.771
pure conifer forest0.7709.31510.114
mixed conifer forest0.41002.6363.033
mixed broadleaf forest0.7701.5492.239
pure broadleaf forest..3.0333.033
total1.94317.2619.04
SGn/a..0.7710.771
pure conifer forest1.45013.01514.514
mixed conifer forest0.77017.01317.712
mixed broadleaf forest1.1577.6218.719
pure broadleaf forest0.410012.31612.715
total3.63150.6554.24
SHn/a......
pure conifer forest..2.5342.534
mixed conifer forest..3.9263.926
mixed broadleaf forest..2.1382.138
pure broadleaf forest..4.3244.324
total..12.8312.83
SOn/a......
pure conifer forest..3.0343.034
mixed conifer forest..6.1236.123
mixed broadleaf forest..11.71511.715
pure broadleaf forest..11.01511.015
total..31.8331.83
SZn/a..1.1571.157
pure conifer forest0.410014.11214.512
mixed conifer forest1.1574.3275.424
mixed broadleaf forest..3.6303.630
pure broadleaf forest0.7702.9343.630
total2.24026.1628.35
TGn/a......
pure conifer forest..3.9253.925
mixed conifer forest..5.7205.720
mixed broadleaf forest..5.5215.521
pure broadleaf forest..6.3196.319
total..21.3321.33
TIn/a..0.7710.771
pure conifer forest7.92126.51134.49
mixed conifer forest..7.1227.122
mixed broadleaf forest0.7718.6209.319
pure broadleaf forest1.15865.1666.15
total9.719108.03117.72
URn/a......
pure conifer forest2.3367.6189.915
mixed conifer forest0.7701.3492.039
mixed broadleaf forest..2.0402.040
pure broadleaf forest0.31003.7294.127
total3.33014.71118.09
VDn/a..1.1581.158
pure conifer forest1.15836.4837.58
mixed conifer forest2.73722.01224.611
mixed broadleaf forest0.410014.41514.715
pure broadleaf forest..20.91220.912
total4.23094.7398.92
VSn/a0.7712.1412.835
pure conifer forest21.91155.2677.24
mixed conifer forest1.4505.5256.922
mixed broadleaf forest0.31006.2236.522
pure broadleaf forest0.77115.11415.814
total25.01184.14109.13
ZGn/a..0.41000.4100
pure conifer forest..1.7441.744
mixed conifer forest..1.3531.353
mixed broadleaf forest..0.9680.968
pure broadleaf forest..1.7441.744
total..6.066.06
ZHn/a......
pure conifer forest..8.5198.519
mixed conifer forest..13.81413.814
mixed broadleaf forest..11.31611.316
pure broadleaf forest..17.61217.612
total..51.1251.12
Switzerlandn/a2.83516.01518.814
pure conifer forest64.17430.72494.92
mixed conifer forest15.715191.74207.34
mixed broadleaf forest6.024143.85149.85
pure broadleaf forest7.422283.93291.33
total96.161066.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164724/151106

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · 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
landslide/mudflow SilvaProtect, modelled and assignedstand structure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....1.1580.31000.41000.7712.538
single-layered6.8231.84512.1179.9186.02412.51649.18
multi-layered11.5173.93018.4147.5216.42310.71858.48
stratified1.4501.1583.2335.8241.8442.14115.415
clustered structure0.4100......0.4100..0.771
total20.2136.72334.81023.61114.81526.011126.15
outside perimetern/a1.1582.1416.1242.4383.2331.45016.315
single-layered52.6782.75113.7530.5936.4842.88358.73
multi-layered99.14151.03137.7422.91131.7963.56505.92
stratified20.21314.51548.1817.81325.21114.815140.75
clustered structure0.771..4.6280.31004.5271.45011.717
total173.72250.41310.1274.04101.13124.031033.31
totaln/a1.1582.1417.2222.8353.5312.14118.814
single-layered59.5784.55125.7440.4842.4855.37407.82
multi-layered110.64154.93156.1430.5938.1874.15564.32
stratified21.61215.61551.3823.61127.01017.014156.14
clustered structure1.158..4.6280.31004.9261.45012.417
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164725/151107

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand structure %± %± %±
AGn/a..0.80.80.80.8
single-layered..31.94.331.14.2
multi-layered100.0.61.34.462.34.4
stratified..5.92.25.72.1
clustered structure......
total100.0.100.0.100.0.
AIn/a..6.66.56.26.1
single-layered100.0.59.112.961.712.3
multi-layered..27.711.926.011.3
stratified..6.66.56.26.1
clustered structure......
total100.0.100.0.100.0.
ARn/a......
single-layered83.315.463.211.268.09.3
multi-layered16.715.531.610.928.09.2
stratified..5.35.24.04.0
clustered structure......
total100.0.100.0.100.0.
BEn/a3.82.71.80.62.00.6
single-layered36.66.736.42.336.42.2
multi-layered48.06.945.82.446.02.2
stratified11.54.414.91.714.61.6
clustered structure..1.10.51.00.5
total100.0.100.0.100.0.
BL/BSn/a......
single-layered50.020.620.16.023.66.0
multi-layered50.020.677.76.374.46.2
stratified..2.22.22.02.0
clustered structure......
total100.0.100.0.100.0.
FRn/a..2.71.62.61.5
single-layered50.025.131.84.532.44.4
multi-layered50.025.160.04.759.74.6
stratified..4.62.04.41.9
clustered structure..0.90.90.90.9
total100.0.100.0.100.0.
GEn/a..14.814.614.814.6
single-layered..14.814.614.814.6
multi-layered..70.518.770.518.7
stratified......
clustered structure......
total..100.0.100.0.
GLn/a......
single-layered12.511.840.68.135.67.2
multi-layered87.511.635.27.944.57.5
stratified..21.46.817.65.7
clustered structure..2.72.72.22.2
total100.0.100.0.100.0.
GRn/a3.32.33.10.83.10.8
single-layered45.06.435.42.336.62.2
multi-layered41.66.435.42.336.22.2
stratified8.33.621.82.020.21.8
clustered structure1.71.74.21.03.90.9
total100.0.100.0.100.0.
JUn/a......
single-layered20.018.030.55.129.94.9
multi-layered60.022.059.75.459.75.3
stratified20.018.09.83.310.43.3
clustered structure......
total100.0.100.0.100.0.
LUn/a..0.80.80.80.8
single-layered..42.04.441.74.4
multi-layered100.0.46.84.547.24.4
stratified..9.62.79.62.6
clustered structure..0.80.80.80.8
total100.0.100.0.100.0.
NEn/a......
single-layered..20.14.617.94.2
multi-layered70.014.547.85.750.35.4
stratified20.012.732.15.330.74.9
clustered structure10.09.5..1.11.1
total100.0.100.0.100.0.
NWn/a......
single-layered..31.610.930.010.5
multi-layered100.0.47.411.750.011.4
stratified..15.88.515.08.2
clustered structure..5.35.25.05.0
total100.0.100.0.100.0.
OWn/a..4.12.83.82.6
single-layered..42.67.339.36.9
multi-layered50.025.232.06.933.46.7
stratified50.025.219.25.821.65.8
clustered structure..2.12.12.02.0
total100.0.100.0.100.0.
SGn/a5.85.60.70.71.30.9
single-layered23.610.334.64.133.33.9
multi-layered64.811.654.94.356.04.1
stratified5.95.79.82.69.32.4
clustered structure......
total100.0.100.0.100.0.
SHn/a......
single-layered50.035.844.18.644.48.3
multi-layered50.035.855.98.555.68.3
stratified......
clustered structure......
total100.0.100.0.100.0.
SOn/a......
single-layered33.327.421.04.521.44.5
multi-layered66.727.474.14.973.84.8
stratified..4.92.44.82.3
clustered structure......
total100.0.100.0.100.0.
SZn/a..4.12.33.82.2
single-layered20.018.039.75.838.45.5
multi-layered80.017.945.25.947.45.7
stratified..11.03.710.33.5
clustered structure......
total100.0.100.0.100.0.
TGn/a......
single-layered..26.05.325.35.2
multi-layered50.035.669.75.669.15.5
stratified50.035.64.32.55.62.7
clustered structure......
total100.0.100.0.100.0.
TIn/a1.71.70.40.40.60.4
single-layered44.16.534.72.936.42.7
multi-layered44.16.553.13.051.52.8
stratified10.23.911.11.910.91.7
clustered structure..0.80.50.60.4
total100.0.100.0.100.0.
URn/a......
single-layered41.714.326.26.829.66.3
multi-layered50.014.550.07.850.06.9
stratified8.38.023.86.620.45.5
clustered structure......
total100.0.100.0.100.0.
VDn/a..1.20.71.20.7
single-layered35.311.637.33.137.13.0
multi-layered52.912.150.93.251.03.1
stratified11.87.89.81.99.91.9
clustered structure..0.80.60.80.5
total100.0.100.0.100.0.
VSn/a1.31.32.91.12.50.9
single-layered46.85.741.93.243.12.8
multi-layered29.95.232.33.031.72.6
stratified22.14.722.42.722.32.3
clustered structure..0.40.40.30.3
total100.0.100.0.100.0.
ZGn/a..7.77.77.17.1
single-layered..30.813.328.612.5
multi-layered100.0.46.214.350.013.8
stratified..15.410.414.39.7
clustered structure......
total100.0.100.0.100.0.
ZHn/a......
single-layered..26.43.726.23.7
multi-layered100.0.66.04.066.23.9
stratified..7.62.27.62.2
clustered structure......
total100.0.100.0.100.0.
Switzerlandn/a1.90.71.60.21.60.2
single-layered38.82.634.70.935.10.8
multi-layered46.62.649.20.948.90.9
stratified12.21.713.50.613.30.6
clustered structure0.50.41.10.21.10.2
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164726/151108

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand structure1000 ha± %1000 ha± %1000 ha± %
AGn/a..0.41000.4100
single-layered..15.31415.314
multi-layered1.25729.4830.67
stratified..2.8372.837
clustered structure......
total1.25747.9349.12
AIn/a..0.31000.3100
single-layered0.31002.9243.221
multi-layered..1.4481.448
stratified..0.31000.3100
clustered structure......
total0.31004.9145.212
ARn/a......
single-layered1.6413.8225.514
multi-layered0.31001.9372.233
stratified..0.31000.3100
clustered structure......
total1.9376.1128.05
BEn/a0.7712.7353.431
single-layered6.52355.2761.76
multi-layered8.52069.4678.05
stratified2.14122.61224.711
clustered structure..1.7451.745
total17.813151.72169.52
BL/BSn/a......
single-layered1.2573.7314.926
multi-layered1.25714.21115.410
stratified..0.41000.4100
clustered structure......
total2.43918.3720.75
FRn/a..1.1571.157
single-layered0.77013.11513.814
multi-layered0.77024.7825.48
stratified..1.9441.944
clustered structure..0.41000.4100
total1.54941.1442.63
GEn/a..0.51000.5100
single-layered..0.51000.5100
multi-layered..2.2342.234
stratified......
clustered structure......
total..3.1203.120
GLn/a......
single-layered0.41005.8226.221
multi-layered2.7365.0247.718
stratified..3.0343.034
clustered structure..0.41000.4100
total3.13314.21017.37
GRn/a0.7714.5275.225
single-layered9.41952.3761.86
multi-layered8.72052.3761.06
stratified1.74532.31034.09
clustered structure0.31006.2236.623
total21.012147.73168.62
JUn/a......
single-layered0.41009.71710.117
multi-layered1.25719.11020.29
stratified0.41003.1343.532
clustered structure......
total1.94431.9433.93
LUn/a..0.31000.3100
single-layered..16.71116.711
multi-layered0.310018.61018.910
stratified..3.8283.828
clustered structure..0.31000.3100
total0.310039.7340.03
NEn/a......
single-layered..5.0255.025
multi-layered2.23711.91314.211
stratified0.6708.0178.616
clustered structure0.3100..0.3100
total3.23025.0628.24
NWn/a......
single-layered..2.3362.336
multi-layered0.41003.5263.824
stratified..1.2551.255
clustered structure..0.41000.4100
total0.41007.3107.78
OWn/a..0.7710.771
single-layered..7.5187.518
multi-layered0.7705.6226.420
stratified0.7703.4314.127
clustered structure..0.41000.4100
total1.54917.5619.04
SGn/a0.41000.41000.771
single-layered1.45016.61318.112
multi-layered4.02926.4930.48
stratified0.41004.7275.126
clustered structure......
total6.12348.1554.24
SHn/a......
single-layered0.41005.3205.719
multi-layered0.41006.8167.115
stratified......
clustered structure......
total0.77012.1512.83
SOn/a......
single-layered0.41006.4226.821
multi-layered0.87022.7823.57
stratified..1.5491.549
clustered structure......
total1.15730.7431.83
SZn/a..1.1571.157
single-layered0.410010.51510.915
multi-layered1.44912.01413.413
stratified..2.9342.934
clustered structure......
total1.84426.4628.35
TGn/a......
single-layered..5.4215.421
multi-layered0.310014.4914.79
stratified0.31000.9571.249
clustered structure......
total0.67020.7421.33
TIn/a0.41000.41000.771
single-layered9.31933.5942.88
multi-layered9.31951.3760.66
stratified2.14110.71812.816
clustered structure..0.7710.771
total21.11296.54117.72
URn/a......
single-layered1.7433.7295.323
multi-layered2.0397.0199.016
stratified0.31003.3303.729
clustered structure......
total4.02714.01218.09
VDn/a..1.1581.158
single-layered2.34034.4936.78
multi-layered3.43347.0750.46
stratified0.8719.1209.819
clustered structure..0.8710.871
total6.52492.4398.92
VSn/a0.31002.4382.835
single-layered12.31634.7947.07
multi-layered7.92026.81034.69
stratified5.82418.51324.411
clustered structure..0.31000.3100
total26.41082.74109.13
ZGn/a..0.41000.4100
single-layered..1.7441.744
multi-layered0.41002.6323.028
stratified..0.9680.968
clustered structure......
total0.41005.696.06
ZHn/a......
single-layered..13.41413.414
multi-layered0.410033.5733.96
stratified..3.9293.929
clustered structure......
total0.410050.8251.12
Switzerlandn/a2.43816.41518.814
single-layered48.88359.43408.12
multi-layered58.58509.52568.12
stratified15.315139.55154.84
clustered structure0.77111.61712.317
total125.751036.411162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164727/151109

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assignedstand structure %± %± %± %± %± %±
inside perimetern/a......3.41.41.41.41.90.7
single-layered34.66.618.89.838.17.538.63.747.95.938.92.6
multi-layered57.76.862.512.152.47.741.53.742.25.946.32.6
stratified5.83.218.89.89.54.515.92.88.43.312.21.7
clustered structure1.91.9....0.60.6..0.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.60.30.90.42.30.62.30.51.20.61.60.2
single-layered29.92.133.51.937.02.037.21.634.22.634.70.9
multi-layered58.62.259.81.944.72.137.31.651.22.749.00.9
stratified10.61.45.70.914.91.520.91.412.21.813.60.6
clustered structure0.20.20.20.21.10.42.40.51.20.61.10.2
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.30.90.42.20.62.50.51.20.51.60.2
single-layered30.42.033.11.837.12.037.41.536.62.435.20.8
multi-layered58.62.159.81.945.22.038.01.549.62.548.70.9
stratified10.21.36.00.914.51.420.11.211.61.613.50.6
clustered structure0.40.30.20.21.00.42.10.41.00.51.10.2
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 #164728/151110

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · 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
landslide/mudflow SilvaProtect, modelled and assignedstand structure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a......2.1410.41002.438
single-layered6.6231.1585.82523.51212.11749.08
multi-layered11.0183.5317.92125.21110.61858.28
stratified1.1581.1581.4509.7192.14115.415
clustered structure0.4100....0.3100..0.771
total19.0135.62515.11560.8725.211125.85
outside perimetern/a1.1582.1414.7286.9221.45016.315
single-layered54.4774.8674.26113.7541.28358.33
multi-layered106.64133.6489.75114.1561.76505.72
stratified19.31312.71629.91063.9714.815140.65
clustered structure0.41000.41002.2417.3221.45011.617
total181.82223.51200.72305.92120.631032.51
totaln/a1.1582.1414.7289.0191.84518.714
single-layered60.9775.9680.06137.2453.37407.32
multi-layered117.64137.1397.75139.3472.35563.92
stratified20.41313.71631.41073.6616.914156.04
clustered structure0.7710.41002.2417.7211.45012.417
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164729/151111

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · 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
landslide/mudflow SilvaProtect, modelled and assignedstand structure %± %± %± %± %± %± %±
inside perimetern/a..4.53.12.12.11.31.34.22.91.41.42.00.7
single-layered30.95.627.36.734.76.846.85.739.67.147.95.938.92.6
multi-layered58.86.047.77.561.27.029.95.243.87.242.25.946.32.6
stratified8.83.420.56.12.02.022.14.710.44.48.43.312.31.7
clustered structure1.51.5......2.12.1..0.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.80.31.90.61.90.72.91.12.80.91.20.61.60.2
single-layered31.91.434.22.139.42.741.93.236.02.634.22.634.70.9
multi-layered59.31.545.12.244.92.832.33.033.72.551.22.749.00.9
stratified7.90.817.11.713.61.922.42.722.92.212.21.813.60.6
clustered structure0.20.11.70.60.30.30.40.44.51.11.20.61.10.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.70.22.10.61.90.72.50.93.00.91.20.51.60.2
single-layered31.91.333.62.038.72.543.12.836.52.436.62.435.20.8
multi-layered59.21.445.32.147.02.631.72.634.92.449.62.548.70.9
stratified7.90.817.31.612.11.722.32.321.42.011.61.613.50.6
clustered structure0.30.11.60.50.30.30.30.34.21.01.00.51.10.2
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 #164730/151112

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · 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
landslide/mudflow SilvaProtect, modelled and assignedstand structure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a..0.7710.41000.31000.7710.41002.538
single-layered7.5224.3295.92412.3166.72212.11748.88
multi-layered14.3167.62110.3187.9207.42110.61858.18
stratified2.1413.2330.31005.8241.8452.14115.415
clustered structure0.4100......0.4100..0.771
total24.31215.91516.91326.41016.91425.211125.55
outside perimetern/a3.2333.6312.1412.4383.5311.45016.315
single-layered129.5464.2644.4834.7944.6841.28358.63
multi-layered240.4384.7550.6726.81041.8861.76506.02
stratified31.81032.11015.31518.51328.31014.815140.95
clustered structure0.7713.2330.31000.31005.6251.45011.717
total405.71187.92112.7382.74123.83120.631033.31
totaln/a3.2334.3292.4382.8354.2281.84518.714
single-layered137.0468.5650.2747.0751.3753.37407.42
multi-layered254.7392.3560.9634.6949.2772.35564.12
stratified34.01035.3915.71524.41130.11016.914156.34
clustered structure1.1583.2330.31000.31005.9241.45012.417
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164731/151113

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand structure %± %± %±
Western Juran/a..0.80.40.70.4
single-layered35.77.430.92.431.32.2
multi-layered54.87.755.12.555.12.4
stratified7.14.013.01.712.41.6
clustered structure2.42.40.30.30.50.3
total100.0.100.0.100.0.
Eastern Juran/a......
single-layered30.014.526.84.227.14.0
multi-layered70.014.570.54.370.54.1
stratified..2.71.52.51.4
clustered structure......
total100.0.100.0.100.0.
Western Plateaun/a..3.51.73.41.7
single-layered..33.84.433.24.4
multi-layered100.0.58.44.659.14.5
stratified..3.51.73.41.7
clustered structure..0.90.90.90.9
total100.0.100.0.100.0.
Central Plateaun/a..0.50.50.50.5
single-layered33.315.741.03.440.73.3
multi-layered55.616.652.33.452.43.4
stratified11.110.56.21.76.41.7
clustered structure......
total100.0.100.0.100.0.
Eastern Plateaun/a..0.30.30.30.3
single-layered..28.22.627.82.5
multi-layered60.021.965.32.765.22.7
stratified40.021.96.21.46.71.4
clustered structure......
total100.0.100.0.100.0.
Western Pre-Alpsn/a..3.61.83.31.6
single-layered40.015.536.04.636.34.4
multi-layered50.015.946.94.847.14.6
stratified10.09.511.73.111.62.9
clustered structure..1.81.31.71.2
total100.0.100.0.100.0.
Central Pre-Alpsn/a..1.50.81.50.7
single-layered10.09.533.22.932.42.8
multi-layered60.015.543.93.144.53.0
stratified30.014.519.82.520.22.4
clustered structure..1.50.81.50.7
total100.0.100.0.100.0.
Eastern Pre-Alpsn/a..2.71.22.41.1
single-layered50.010.742.93.743.73.5
multi-layered50.010.744.63.745.13.5
stratified..9.82.28.72.0
clustered structure......
total100.0.100.0.100.0.
Northwestern Alpsn/a8.35.71.31.02.31.2
single-layered29.29.334.53.933.83.6
multi-layered41.610.145.94.145.33.8
stratified20.88.316.23.016.92.9
clustered structure..2.01.21.71.0
total100.0.100.0.100.0.
Central Alpsn/a......
single-layered35.712.935.96.035.95.5
multi-layered57.113.345.26.247.35.7
stratified7.16.918.94.916.84.3
clustered structure......
total100.0.100.0.100.0.
Northeastern Alpsn/a7.87.41.31.32.31.6
single-layered7.77.434.25.530.34.9
multi-layered84.510.046.05.751.75.3
stratified..17.14.314.63.8
clustered structure..1.31.31.11.1
total100.0.100.0.100.0.
Southwestern Alpsn/a1.31.32.91.12.50.9
single-layered46.85.741.93.243.12.8
multi-layered29.95.232.33.031.72.6
stratified22.14.722.42.722.32.3
clustered structure..0.40.40.30.3
total100.0.100.0.100.0.
Southeastern Alpsn/a4.22.92.80.93.00.9
single-layered39.67.136.02.636.52.4
multi-layered43.87.233.72.534.92.4
stratified10.44.422.92.221.42.0
clustered structure2.12.14.51.14.21.0
total100.0.100.0.100.0.
Southern Alpsn/a1.41.41.20.61.20.5
single-layered47.95.934.22.636.62.4
multi-layered42.25.951.22.749.62.5
stratified8.43.312.21.811.61.6
clustered structure..1.20.61.00.5
total100.0.100.0.100.0.
Switzerlandn/a2.00.71.60.21.60.2
single-layered38.82.634.60.935.10.8
multi-layered46.42.649.10.948.80.9
stratified12.21.713.60.613.40.6
clustered structure0.60.41.10.21.10.2
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #164732/151114

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand structure · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand structure1000 ha± %1000 ha± %1000 ha± %
Western Juran/a..1.1581.158
single-layered5.32542.5847.97
multi-layered8.22076.0584.25
stratified1.15817.91318.913
clustered structure0.41000.41000.771
total15.015137.92152.82
Eastern Juran/a......
single-layered1.25711.91613.115
multi-layered2.83731.2734.06
stratified..1.2571.257
clustered structure......
total4.03044.2348.22
Western Plateaun/a..1.6491.649
single-layered..16.11316.113
multi-layered0.87027.8928.69
stratified..1.6491.649
clustered structure..0.41000.4100
total0.87047.6448.43
Central Plateaun/a..0.31000.3100
single-layered0.95727.0928.08
multi-layered1.54434.5736.07
stratified0.31004.1274.426
clustered structure......
total2.83365.9368.72
Eastern Plateaun/a..0.41000.4100
single-layered..31.1931.19
multi-layered1.15871.9572.94
stratified0.7716.8227.521
clustered structure......
total1.844110.12111.92
Western Pre-Alpsn/a..1.5491.549
single-layered1.54914.81416.213
multi-layered1.94419.21121.110
stratified0.41004.8265.225
clustered structure..0.7700.770
total3.73041.0544.84
Central Pre-Alpsn/a..1.4501.450
single-layered0.410031.2931.69
multi-layered2.24041.2743.47
stratified1.15818.61319.712
clustered structure..1.4501.450
total3.63193.9397.52
Eastern Pre-Alpsn/a..1.8441.844
single-layered3.92928.2932.18
multi-layered3.92929.3933.28
stratified..6.4236.423
clustered structure......
total7.92065.7473.63
Northwestern Alpsn/a0.7710.7711.450
single-layered2.53718.21220.811
multi-layered3.63124.31027.99
stratified1.8448.61910.417
clustered structure..1.1571.157
total8.61952.9561.54
Central Alpsn/a......
single-layered1.7448.0199.717
multi-layered2.73410.01612.814
stratified0.31004.2284.527
clustered structure......
total4.82522.2927.07
Northeastern Alpsn/a0.41000.41000.771
single-layered0.41009.3179.717
multi-layered3.92912.51416.511
stratified..4.7274.727
clustered structure..0.41000.4100
total4.72627.2731.96
Southwestern Alpsn/a0.31002.4382.835
single-layered12.31634.7947.07
multi-layered7.92026.81034.69
stratified5.82418.51324.411
clustered structure..0.31000.3100
total26.41082.74109.13
Southeastern Alpsn/a0.7713.5314.228
single-layered6.72244.6851.37
multi-layered7.42141.8849.27
stratified1.84528.31030.110
clustered structure0.41005.6255.924
total16.914123.83140.62
Southern Alpsn/a0.41001.4501.845
single-layered12.11741.2853.37
multi-layered10.61861.7672.35
stratified2.14114.81516.914
clustered structure..1.4501.450
total25.211120.63145.72
Switzerlandn/a2.53816.51519.014
single-layered48.98358.83407.72
multi-layered58.58508.12566.62
stratified15.415140.55155.94
clustered structure0.77111.71712.417
total126.051035.711161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164733/151115

NFI4b

forest area: landslide/mudflow SilvaProtect, modelled and assigned · regeneration cover · 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
landslide/mudflow SilvaProtect, modelled and assignedregeneration cover %± %± %± %± %± %± %±
inside perimeter< 1%1.81.85.35.18.22.81.41.47.14.08.23.25.61.2
1-9%23.25.626.310.129.64.646.46.038.17.550.75.936.92.5
10-25%23.25.615.88.434.74.824.65.235.77.430.15.429.12.4
26-50%21.45.526.310.110.23.123.25.17.14.011.03.715.11.9
51-75%10.74.115.88.49.22.92.92.011.95.0..7.01.4
76-100%19.65.310.57.08.22.81.41.4....6.21.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter< 1%2.90.83.40.75.30.87.41.88.41.66.31.35.00.4
1-9%20.81.814.81.330.61.642.23.438.82.945.12.728.50.8
10-25%23.91.923.51.632.11.631.53.230.92.726.12.427.70.8
26-50%19.11.821.71.618.61.313.42.315.42.115.11.918.30.7
51-75%16.41.718.11.48.50.94.21.45.11.35.11.211.10.6
76-100%17.01.718.51.54.90.71.40.81.40.72.30.89.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total< 1%2.80.73.40.75.60.76.01.48.21.56.61.25.10.4
1-9%21.01.815.11.330.51.543.22.938.72.746.12.429.40.8
10-25%23.81.823.31.632.31.529.82.731.62.626.82.227.90.8
26-50%19.31.721.91.517.71.215.82.214.31.914.41.718.00.7
51-75%15.81.618.01.48.60.93.91.16.01.34.21.010.70.5
76-100%17.31.618.31.45.30.71.40.71.20.61.90.79.00.5
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 #164734/151116
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