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NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
AGto 19 m2/ha..18.91218.912
20-39 m2/ha..19.71119.711
40-59 m2/ha..8.5208.520
from 60 m2/ha..1.6491.649
total..48.7248.72
AIto 19 m2/ha..0.31000.3100
20-39 m2/ha..1.0541.054
40-59 m2/ha0.6691.9342.627
from 60 m2/ha0.31000.6691.054
total1.0543.9174.811
ARto 19 m2/ha..1.0551.055
20-39 m2/ha..1.3471.347
40-59 m2/ha..3.8223.822
from 60 m2/ha0.31001.6411.936
total0.31007.768.05
BEto 19 m2/ha4.12937.0941.18
20-39 m2/ha5.12557.9763.06
40-59 m2/ha4.12940.7844.88
from 60 m2/ha0.77112.61613.315
total14.115148.22162.32
BL/BSto 19 m2/ha..4.1294.129
20-39 m2/ha..11.81311.813
40-59 m2/ha..2.0432.043
from 60 m2/ha..1.1581.158
total..19.1619.16
FRto 19 m2/ha0.410010.81611.216
20-39 m2/ha0.77011.21611.915
40-59 m2/ha..15.01315.013
from 60 m2/ha..3.0343.034
total1.15740.0441.13
GEto 19 m2/ha..0.51000.5100
20-39 m2/ha..1.4481.448
40-59 m2/ha..0.41000.4100
from 60 m2/ha......
total..2.2342.234
GLto 19 m2/ha0.8703.9294.626
20-39 m2/ha1.2573.5314.626
40-59 m2/ha1.2572.3393.531
from 60 m2/ha0.8702.3393.133
total3.92911.91215.88
GRto 19 m2/ha3.53132.01035.59
20-39 m2/ha10.51854.1764.66
40-59 m2/ha4.52728.31032.89
from 60 m2/ha1.0588.4209.419
total19.613122.83142.33
JUto 19 m2/ha..7.0217.021
20-39 m2/ha0.87012.91413.613
40-59 m2/ha..10.91610.916
from 60 m2/ha..2.3402.340
total0.87033.1333.93
LUto 19 m2/ha..9.7169.716
20-39 m2/ha..14.71214.712
40-59 m2/ha0.31009.5169.816
from 60 m2/ha0.31004.8255.124
total0.67038.7339.33
NEto 19 m2/ha..7.5197.519
20-39 m2/ha0.67012.81213.511
40-59 m2/ha0.31005.8216.121
from 60 m2/ha..0.31000.3100
total1.05726.4527.44
NWto 19 m2/ha..0.8690.869
20-39 m2/ha1.2551.2552.336
40-59 m2/ha..2.7322.732
from 60 m2/ha..0.8690.869
total1.2555.4176.513
OWto 19 m2/ha..5.9225.922
20-39 m2/ha..5.2235.223
40-59 m2/ha1.5494.1275.622
from 60 m2/ha0.41001.9432.239
total1.94317.2619.04
SGto 19 m2/ha0.41007.6217.920
20-39 m2/ha1.84418.11219.911
40-59 m2/ha0.77011.21611.916
from 60 m2/ha0.7709.0199.818
total3.63145.9549.54
SHto 19 m2/ha..2.8322.832
20-39 m2/ha..5.3205.320
40-59 m2/ha..4.6234.623
from 60 m2/ha......
total..12.8312.83
SOto 19 m2/ha..7.2207.220
20-39 m2/ha..15.51115.511
40-59 m2/ha..6.8216.821
from 60 m2/ha..1.9441.944
total..31.4431.44
SZto 19 m2/ha0.41004.3274.726
20-39 m2/ha0.410010.51510.915
40-59 m2/ha1.1577.2208.318
from 60 m2/ha0.41001.4491.844
total2.24023.5625.75
TGto 19 m2/ha..5.7205.720
20-39 m2/ha..9.3149.314
40-59 m2/ha..4.6244.624
from 60 m2/ha..1.5431.543
total..21.0421.04
TIto 19 m2/ha1.45034.7936.29
20-39 m2/ha4.32836.1940.48
40-59 m2/ha1.45012.91614.315
from 60 m2/ha1.1583.9305.026
total8.32087.6495.94
URto 19 m2/ha0.31002.7353.132
20-39 m2/ha0.7705.3236.021
40-59 m2/ha1.3492.0393.330
from 60 m2/ha0.7701.3492.039
total3.03111.41414.311
VDto 19 m2/ha0.87125.71126.511
20-39 m2/ha0.87137.9838.68
40-59 m2/ha1.15819.41320.512
from 60 m2/ha1.1586.5247.622
total3.83189.4393.23
VSto 19 m2/ha5.52528.11033.79
20-39 m2/ha8.61924.31132.99
40-59 m2/ha7.52113.71521.312
from 60 m2/ha2.7353.1335.924
total24.41169.3593.73
ZGto 19 m2/ha..2.6322.632
20-39 m2/ha..1.7441.744
40-59 m2/ha..1.3531.353
from 60 m2/ha......
total..5.695.69
ZHto 19 m2/ha..13.41413.414
20-39 m2/ha..23.3923.39
40-59 m2/ha..12.01512.015
from 60 m2/ha..1.8441.844
total..50.4250.42
Switzerlandto 19 m2/ha17.514274.33291.83
20-39 m2/ha36.510396.02432.52
40-59 m2/ha25.811231.44257.33
from 60 m2/ha10.51871.9782.46
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #160097/146476

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %±
inside perimeterto 19 m2/ha....20.06.822.33.111.55.419.32.5
20-39 m2/ha53.913.8..31.47.937.73.757.18.440.43.1
40-59 m2/ha46.113.8..28.67.629.13.420.06.828.72.8
from 60 m2/ha....20.06.810.92.411.45.411.62.0
total100.0...100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha23.71.928.31.823.31.830.91.737.42.828.10.9
20-39 m2/ha48.82.240.71.933.42.040.01.840.72.840.70.9
40-59 m2/ha23.71.923.91.730.22.022.01.516.92.223.90.8
from 60 m2/ha3.80.87.11.013.11.57.10.95.01.37.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha23.11.828.31.823.11.829.21.534.72.627.30.8
20-39 m2/ha48.92.240.71.933.32.039.61.642.42.740.60.9
40-59 m2/ha24.31.923.91.730.11.923.41.417.22.124.30.8
from 60 m2/ha3.70.87.11.013.61.47.80.95.61.37.80.5
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 #160098/146477

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterto 19 m2/ha....2.53813.5161.45017.414
20-39 m2/ha2.638..4.03022.8127.12236.410
40-59 m2/ha2.241..3.63117.6142.53825.911
from 60 m2/ha....2.5386.6231.45010.518
total4.727..12.61660.5712.41690.36
outside perimeterto 19 m2/ha45.3864.0644.7878.4640.08272.43
20-39 m2/ha93.1592.1564.26101.7543.58394.52
40-59 m2/ha45.3854.1758.0756.0718.113231.54
from 60 m2/ha7.32216.21425.21118.0145.32572.07
total190.92226.31192.12254.22106.94970.41
totalto 19 m2/ha45.3864.0647.2891.9641.48289.83
20-39 m2/ha95.6592.1568.16124.5450.67430.92
40-59 m2/ha47.5854.1761.6773.6620.512257.43
from 60 m2/ha7.32216.21427.81124.6126.72282.56
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160099/146478

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %± %±
inside perimeterto 19 m2/ha..26.85.912.85.422.65.022.76.311.55.419.42.5
20-39 m2/ha53.813.833.96.328.27.235.25.750.07.557.18.440.43.1
40-59 m2/ha46.213.826.85.935.97.731.05.522.76.320.06.828.62.8
from 60 m2/ha..12.54.423.16.811.33.84.53.111.45.411.62.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha26.21.327.82.120.82.440.63.525.72.537.42.828.10.9
20-39 m2/ha44.31.533.72.236.42.835.13.445.22.940.72.840.60.9
40-59 m2/ha23.81.228.42.127.82.619.82.822.42.416.92.223.80.8
from 60 m2/ha5.70.710.21.415.02.14.51.56.81.55.01.37.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha25.91.327.71.919.82.235.92.925.32.434.72.627.40.8
20-39 m2/ha44.41.433.72.135.52.635.12.945.82.742.42.740.60.9
40-59 m2/ha24.11.228.22.028.72.522.72.522.42.317.22.124.20.8
from 60 m2/ha5.60.710.41.316.02.06.31.56.51.35.61.37.80.5
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 #160100/146479

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterto 19 m2/ha..5.4261.7455.5253.5311.45017.614
20-39 m2/ha2.5386.9233.8308.6197.7217.12236.510
40-59 m2/ha2.2415.4264.8267.5213.5312.53825.911
from 60 m2/ha..2.5383.1332.7350.7711.45010.518
total4.72820.21313.41524.41115.51412.41690.56
outside perimeterto 19 m2/ha109.5547.2821.41228.11026.61140.08272.93
20-39 m2/ha184.9357.3737.6824.31146.8743.58394.52
40-59 m2/ha99.4548.3828.71013.71523.21118.113231.44
from 60 m2/ha23.61217.31415.5143.1337.0225.32571.97
total417.41170.22103.2369.35103.63106.94970.61
totalto 19 m2/ha109.5552.7723.11233.7930.11041.48290.53
20-39 m2/ha187.4364.2641.4832.9954.5750.67431.02
40-59 m2/ha101.6553.7733.5921.31226.71020.512257.33
from 60 m2/ha23.61219.81318.6135.9247.7216.72282.46
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160101/146480

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees) %± %± %±
Western Jurato 19 m2/ha..23.52.122.82.1
20-39 m2/ha53.713.848.32.548.42.4
40-59 m2/ha46.313.824.02.124.72.1
from 60 m2/ha..4.21.04.11.0
total100.0.100.0.100.0.
Eastern Jurato 19 m2/ha..24.43.924.43.9
20-39 m2/ha..50.54.650.54.6
40-59 m2/ha..22.73.822.73.8
from 60 m2/ha..2.41.42.41.4
total..100.0.100.0.
Western Plateauto 19 m2/ha..27.04.227.04.2
20-39 m2/ha..33.84.433.84.4
40-59 m2/ha..28.74.228.74.2
from 60 m2/ha..10.52.910.52.9
total..100.0.100.0.
Central Plateauto 19 m2/ha..27.23.027.23.0
20-39 m2/ha..40.33.340.33.3
40-59 m2/ha..24.42.924.42.9
from 60 m2/ha..8.21.98.21.9
total..100.0.100.0.
Eastern Plateauto 19 m2/ha..29.52.629.52.6
20-39 m2/ha..43.52.843.52.8
40-59 m2/ha..21.82.421.82.4
from 60 m2/ha..5.21.35.21.3
total..100.0.100.0.
Western Pre-Alpsto 19 m2/ha37.117.126.24.327.04.2
20-39 m2/ha25.115.430.04.529.74.4
40-59 m2/ha..35.04.732.54.4
from 60 m2/ha37.717.28.82.810.83.0
total100.0.100.0.100.0.
Central Pre-Alpsto 19 m2/ha21.19.427.32.926.92.7
20-39 m2/ha31.610.733.53.033.32.9
40-59 m2/ha36.811.126.92.827.72.8
from 60 m2/ha10.57.112.22.112.12.0
total100.0.100.0.100.0.
Eastern Pre-Alpsto 19 m2/ha..16.22.715.52.6
20-39 m2/ha37.517.135.13.535.23.4
40-59 m2/ha37.517.131.93.432.13.4
from 60 m2/ha25.015.316.82.817.12.7
total100.0.100.0.100.0.
Northwestern Alpsto 19 m2/ha27.68.329.94.129.43.7
20-39 m2/ha37.99.037.14.337.33.9
40-59 m2/ha27.68.325.83.926.13.6
from 60 m2/ha6.94.77.22.37.22.1
total100.0.100.0.100.0.
Central Alpsto 19 m2/ha14.39.420.25.718.94.9
20-39 m2/ha21.411.045.97.140.66.2
40-59 m2/ha42.913.321.95.926.55.5
from 60 m2/ha21.411.011.94.614.04.3
total100.0.100.0.100.0.
Northeastern Alpsto 19 m2/ha17.69.333.46.030.05.1
20-39 m2/ha29.411.133.35.932.55.3
40-59 m2/ha29.411.120.65.122.54.7
from 60 m2/ha23.510.312.74.215.04.0
total100.0.100.0.100.0.
Southwestern Alpsto 19 m2/ha22.65.040.63.535.92.9
20-39 m2/ha35.25.735.13.435.12.9
40-59 m2/ha31.05.519.82.822.72.5
from 60 m2/ha11.33.84.51.56.31.5
total100.0.100.0.100.0.
Southeastern Alpsto 19 m2/ha22.76.325.72.525.32.4
20-39 m2/ha50.07.545.22.945.82.7
40-59 m2/ha22.76.322.42.422.42.3
from 60 m2/ha4.53.16.81.56.51.3
total100.0.100.0.100.0.
Southern Alpsto 19 m2/ha11.55.437.42.834.72.6
20-39 m2/ha57.18.440.72.842.42.7
40-59 m2/ha20.06.816.92.217.22.1
from 60 m2/ha11.45.45.01.35.61.3
total100.0.100.0.100.0.
Switzerlandto 19 m2/ha19.42.528.10.927.30.8
20-39 m2/ha40.33.140.60.940.60.9
40-59 m2/ha28.62.823.90.824.30.8
from 60 m2/ha11.72.07.40.57.80.5
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160102/146481

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
Western Jurato 19 m2/ha..33.9933.99
20-39 m2/ha2.53869.6572.15
40-59 m2/ha2.24134.6936.89
from 60 m2/ha..6.1246.124
total4.627144.22148.92
Eastern Jurato 19 m2/ha..11.51611.516
20-39 m2/ha..23.7923.79
40-59 m2/ha..10.71710.717
from 60 m2/ha..1.1581.158
total..47.0347.03
Western Plateauto 19 m2/ha..12.71612.716
20-39 m2/ha..16.01416.014
40-59 m2/ha..13.51513.515
from 60 m2/ha..4.9284.928
total..47.2447.24
Central Plateauto 19 m2/ha..18.71118.711
20-39 m2/ha..27.7827.78
40-59 m2/ha..16.71216.712
from 60 m2/ha..5.6235.623
total..68.7268.72
Eastern Plateauto 19 m2/ha..32.5932.59
20-39 m2/ha..47.9747.97
40-59 m2/ha..24.01124.011
from 60 m2/ha..5.7245.724
total..110.12110.12
Western Pre-Alpsto 19 m2/ha1.15810.01711.116
20-39 m2/ha0.77011.51612.215
40-59 m2/ha..13.31413.314
from 60 m2/ha1.1573.3324.428
total2.93538.1541.14
Central Pre-Alpsto 19 m2/ha1.45024.01125.510
20-39 m2/ha2.24029.41031.69
40-59 m2/ha2.53723.71126.210
from 60 m2/ha0.77110.81711.517
total6.82287.8394.72
Eastern Pre-Alpsto 19 m2/ha..10.71710.717
20-39 m2/ha1.15723.21124.310
40-59 m2/ha1.15721.11122.111
from 60 m2/ha0.77111.11711.816
total2.93566.1368.93
Northwestern Alpsto 19 m2/ha2.93513.21516.113
20-39 m2/ha3.92916.41320.411
40-59 m2/ha2.93511.41614.314
from 60 m2/ha0.7713.2333.929
total10.41744.3654.74
Central Alpsto 19 m2/ha0.7703.5314.228
20-39 m2/ha1.0577.9199.017
40-59 m2/ha2.1403.8295.822
from 60 m2/ha1.0572.1403.132
total4.82517.31122.18
Northeastern Alpsto 19 m2/ha1.1577.5208.619
20-39 m2/ha1.8447.5209.317
40-59 m2/ha1.8444.7266.422
from 60 m2/ha1.4492.9344.327
total6.12222.6928.76
Southwestern Alpsto 19 m2/ha5.52528.11033.79
20-39 m2/ha8.61924.31132.99
40-59 m2/ha7.52113.71521.312
from 60 m2/ha2.7353.1335.924
total24.41169.3593.73
Southeastern Alpsto 19 m2/ha3.53126.61130.110
20-39 m2/ha7.72146.8754.57
40-59 m2/ha3.53123.21126.710
from 60 m2/ha0.7717.0227.721
total15.514103.63119.03
Southern Alpsto 19 m2/ha1.45040.0841.48
20-39 m2/ha7.12243.5850.67
40-59 m2/ha2.53818.11320.512
from 60 m2/ha1.4505.3256.722
total12.416106.94119.33
Switzerlandto 19 m2/ha17.614273.03290.63
20-39 m2/ha36.610395.42432.02
40-59 m2/ha26.011232.44258.43
from 60 m2/ha10.61872.3782.96
total90.86973.211063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160103/146482

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical....5.82.36.12.95.43.78.14.55.81.5
less stable15.410.0..48.14.943.26.129.77.532.57.740.33.1
stable84.610.0..46.24.950.76.164.97.959.48.153.93.1
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimetercritical6.11.17.81.06.40.95.51.73.81.22.60.96.00.5
less stable28.32.038.61.837.31.725.03.226.62.935.72.734.00.9
stable65.62.153.61.956.31.869.53.469.63.061.72.860.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical5.91.07.81.06.40.85.71.54.01.23.21.06.00.4
less stable28.02.038.61.838.61.629.92.927.02.735.42.634.60.9
stable66.12.153.61.955.11.764.43.169.02.861.42.659.40.9
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 #160104/146483

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....2.1411.4500.7711.1585.326
less stable0.771..17.7149.9183.9304.32936.510
stable4.030..17.01411.6168.5207.82148.98
total4.727..36.9922.91113.11613.21690.86
outside perimetercritical11.21719.81317.9143.4313.2332.83558.38
less stable52.2797.95103.6515.41422.21239.08330.43
stable121.04136.24156.3442.8758.2667.46581.92
total184.52253.91277.7261.6583.64109.24970.61
totalcritical11.21719.81320.0134.8263.9303.93063.67
less stable53.0797.95121.3425.31026.11043.38366.93
stable125.03136.24173.3354.5666.7575.25630.82
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160105/146484

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability %± %± %±
AGcritical..5.02.05.02.0
less stable..41.34.541.34.5
stable..53.74.553.74.5
total..100.0.100.0.
AIcritical......
less stable......
stable100.0.100.0.100.0.
total100.0.100.0.100.0.
ARcritical..4.24.24.04.0
less stable..33.39.832.09.5
stable100.0.62.59.964.09.6
total100.0.100.0.100.0.
BEcritical4.93.43.90.94.00.9
less stable46.27.840.22.440.72.3
stable49.07.855.92.455.32.3
total100.0.100.0.100.0.
BL/BScritical..8.54.18.54.1
less stable..38.47.138.47.1
stable..53.07.353.07.3
total..100.0.100.0.
FRcritical..7.52.67.32.5
less stable66.727.341.24.841.94.7
stable33.327.351.44.950.94.8
total100.0.100.0.100.0.
GEcritical......
less stable......
stable..100.0.100.0.
total..100.0.100.0.
GLcritical10.09.616.16.714.65.6
less stable30.014.654.89.048.87.9
stable60.015.629.08.236.67.6
total100.0.100.0.100.0.
GRcritical5.43.03.71.03.91.0
less stable33.96.330.72.531.12.3
stable60.76.565.62.564.92.4
total100.0.100.0.100.0.
JUcritical..10.63.410.43.3
less stable50.035.527.14.827.64.8
stable50.035.562.35.362.05.2
total100.0.100.0.100.0.
LUcritical..13.03.012.83.0
less stable..42.14.441.54.4
stable100.0.44.94.545.84.5
total100.0.100.0.100.0.
NEcritical..2.41.72.31.6
less stable..20.64.519.94.3
stable100.0.77.04.777.84.5
total100.0.100.0.100.0.
NWcritical33.327.828.612.329.411.3
less stable33.327.857.113.452.912.3
stable33.327.814.39.617.69.4
total100.0.100.0.100.0.
OWcritical20.018.113.15.013.74.9
less stable80.018.026.16.531.46.5
stable..60.87.354.87.0
total100.0.100.0.100.0.
SGcritical..11.02.810.22.6
less stable20.012.718.13.418.23.3
stable80.012.670.94.071.63.9
total100.0.100.0.100.0.
SHcritical..5.63.95.63.9
less stable..47.28.447.28.4
stable..47.28.447.28.4
total..100.0.100.0.
SOcritical..9.63.39.63.3
less stable..31.35.131.35.1
stable..59.05.459.05.4
total..100.0.100.0.
SZcritical..3.12.22.82.0
less stable33.319.347.76.246.55.9
stable66.719.349.26.250.76.0
total100.0.100.0.100.0.
TGcritical..5.72.85.72.8
less stable..34.25.734.25.7
stable..60.25.960.25.9
total..100.0.100.0.
TIcritical8.75.91.60.82.20.9
less stable30.59.635.43.035.02.9
stable60.810.263.03.162.83.0
total100.0.100.0.100.0.
URcritical..2.92.92.32.3
less stable77.813.941.98.549.37.7
stable22.213.955.28.648.47.7
total100.0.100.0.100.0.
VDcritical10.09.54.31.34.51.3
less stable70.014.529.73.031.43.0
stable20.012.766.03.164.13.1
total100.0.100.0.100.0.
VScritical5.72.85.91.75.91.4
less stable42.25.927.23.131.12.8
stable52.15.966.93.363.02.9
total100.0.100.0.100.0.
ZGcritical......
less stable..7.77.77.77.7
stable..92.37.292.37.2
total..100.0.100.0.
ZHcritical..11.22.611.22.6
less stable..37.14.037.14.0
stable..51.74.251.74.2
total..100.0.100.0.
Switzerlandcritical5.91.56.00.56.00.4
less stable40.43.134.00.934.60.9
stable53.73.159.90.959.40.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #160106/146485

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability1000 ha± %1000 ha± %1000 ha± %
AGcritical..2.4402.440
less stable..20.11120.111
stable..26.2926.29
total..48.7248.72
AIcritical......
less stable......
stable1.0543.9174.811
total1.0543.9174.811
ARcritical..0.31000.3100
less stable..2.6302.630
stable0.31004.8175.116
total0.31007.768.05
BEcritical0.7715.8246.523
less stable6.52359.6666.16
stable6.92282.8589.75
total14.115148.22162.32
BL/BScritical..1.6491.649
less stable..7.3197.319
stable..10.11510.115
total..19.1619.16
FRcritical..3.0343.034
less stable0.77016.51217.212
stable0.410020.51020.910
total1.15740.0441.13
GEcritical......
less stable......
stable..2.2342.234
total..2.2342.234
GLcritical0.41001.9432.339
less stable1.2576.5207.718
stable2.3393.5315.822
total3.92911.91215.88
GRcritical1.0584.5275.625
less stable6.62337.7944.38
stable11.91780.6592.44
total19.613122.83142.33
JUcritical..3.5323.532
less stable0.41009.0189.418
stable0.410020.6921.09
total0.87033.1333.93
LUcritical..5.0245.024
less stable..16.31116.311
stable0.67017.41118.010
total0.67038.7339.33
NEcritical..0.6700.670
less stable..5.4225.422
stable1.05720.3821.37
total1.05726.4527.44
NWcritical0.41001.5461.940
less stable0.41003.1293.526
stable0.41000.8691.255
total1.2555.4176.513
OWcritical0.41002.2392.636
less stable1.5494.5266.021
stable..10.41410.414
total1.94317.2619.04
SGcritical..5.1265.126
less stable0.7708.3209.019
stable2.93532.5735.47
total3.63145.9549.54
SHcritical..0.7700.770
less stable..6.1186.118
stable..6.1186.118
total..12.8312.83
SOcritical..3.0343.034
less stable..9.8179.817
stable..18.5918.59
total..31.4431.44
SZcritical..0.7700.770
less stable0.77011.21411.914
stable1.44911.61413.013
total2.24023.5625.75
TGcritical..1.2491.249
less stable..7.2177.217
stable..12.61112.611
total..21.0421.04
TIcritical0.7711.4502.141
less stable2.53831.0933.59
stable5.02655.2660.26
total8.32087.6495.94
URcritical..0.31000.3100
less stable2.3364.8257.120
stable0.7706.3206.919
total3.03111.41414.311
VDcritical0.41003.8314.230
less stable2.73726.61029.210
stable0.87159.0659.86
total3.83189.4393.23
VScritical1.4504.1285.525
less stable10.31818.91229.110
stable12.71646.4759.06
total24.41169.3593.73
ZGcritical......
less stable..0.41000.4100
stable..5.1125.112
total..5.695.69
ZHcritical..5.6245.624
less stable..18.71118.711
stable..26.1826.18
total..50.4250.42
Switzerlandcritical5.42658.6864.07
less stable36.510331.53368.03
stable48.68583.52632.12
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #160107/146486

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %±
inside perimetercritical....5.73.96.31.85.73.95.81.5
less stable15.410.0..40.08.344.03.831.57.940.23.1
stable84.610.0..54.38.449.73.862.88.254.03.1
total100.0...100.0.100.0.100.0.100.0.
outside perimetercritical6.31.17.61.07.11.14.90.82.70.96.00.5
less stable29.82.038.01.935.62.131.71.735.62.734.00.9
stable63.92.154.42.057.22.163.31.861.72.860.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical6.21.07.61.07.01.15.20.73.00.96.00.4
less stable29.52.038.01.935.92.034.11.635.22.634.60.9
stable64.42.154.42.057.02.160.71.661.82.659.40.9
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 #160108/146487

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....0.7713.8300.7715.226
less stable0.771..5.02626.6113.93036.310
stable4.030..6.82330.1107.82148.78
total4.727..12.61660.5712.41690.36
outside perimetercritical12.01717.21413.71612.5162.83558.38
less stable56.9786.1568.5680.7638.19330.33
stable121.94123.04109.94161.0465.96581.82
total190.92226.31192.12254.22106.94970.41
totalcritical12.01717.21414.41516.3143.53163.57
less stable57.7786.1573.56107.3542.08366.63
stable125.94123.04116.84191.0373.75630.52
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160109/146488

NFI3

forest area: avalanches 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 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical..8.93.82.62.55.72.86.83.85.73.95.91.5
less stable15.410.057.16.635.97.742.25.934.17.231.57.940.43.1
stable84.610.033.96.361.57.852.15.959.17.462.88.253.83.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical7.00.77.01.26.91.55.91.73.11.02.70.96.00.5
less stable34.41.439.42.331.82.727.23.129.52.735.62.734.10.9
stable58.61.453.62.361.32.866.93.367.42.761.72.859.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical6.90.77.21.16.41.35.91.43.51.03.00.96.00.4
less stable34.21.441.32.132.32.531.12.830.12.535.22.634.60.9
stable58.91.451.52.261.32.763.02.966.42.661.82.659.40.9
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 #160110/146489

NFI3

forest area: avalanches 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 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical..1.8450.31001.4501.1580.7715.326
less stable0.77111.5174.82610.3185.3253.93036.510
stable3.9306.9238.32012.7169.1197.82148.78
total4.72820.21313.41524.41115.51412.41690.56
outside perimetercritical29.31111.9177.1224.1283.2332.83558.48
less stable143.4467.1632.8918.91230.61038.19330.83
stable244.7391.2563.3646.4769.9565.96581.42
total417.41170.22103.2369.35103.63106.94970.61
totalcritical29.31113.7167.4225.5254.2283.53163.77
less stable144.1478.6637.7829.11035.8942.08367.43
stable248.6398.1571.6559.0679.0573.75630.02
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160111/146490

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability %± %± %±
Western Juracritical..6.91.36.71.2
less stable15.310.026.52.226.22.2
stable84.710.066.62.367.12.3
total100.0.100.0.100.0.
Eastern Juracritical..4.21.84.21.8
less stable..41.24.541.24.5
stable..54.64.654.64.6
total..100.0.100.0.
Western Plateaucritical..4.41.94.41.9
less stable..38.54.638.54.6
stable..57.24.657.24.6
total..100.0.100.0.
Central Plateaucritical..7.21.77.21.7
less stable..40.73.340.73.3
stable..52.13.452.13.4
total..100.0.100.0.
Eastern Plateaucritical..9.11.69.11.6
less stable..36.02.736.02.7
stable..54.92.854.92.8
total..100.0.100.0.
Western Pre-Alpscritical..7.82.67.22.5
less stable50.317.731.14.632.54.5
stable49.717.761.14.860.34.7
total100.0.100.0.100.0.
Central Pre-Alpscritical10.57.17.81.78.01.7
less stable52.611.542.03.242.83.1
stable36.811.150.23.249.23.1
total100.0.100.0.100.0.
Eastern Pre-Alpscritical..5.91.75.71.7
less stable..29.73.428.53.3
stable100.0.64.33.565.83.4
total100.0.100.0.100.0.
Northwestern Alpscritical10.35.74.81.95.91.9
less stable62.19.041.14.445.14.0
stable27.68.354.14.549.14.1
total100.0.100.0.100.0.
Central Alpscritical..2.02.01.61.6
less stable64.312.836.36.842.46.2
stable35.712.961.76.956.06.2
total100.0.100.0.100.0.
Northeastern Alpscritical5.95.712.74.211.33.5
less stable29.411.134.96.033.75.3
stable64.711.652.36.355.05.6
total100.0.100.0.100.0.
Southwestern Alpscritical5.72.85.91.75.91.4
less stable42.25.927.23.131.12.8
stable52.15.966.93.363.02.9
total100.0.100.0.100.0.
Southeastern Alpscritical6.83.83.11.03.51.0
less stable34.17.229.52.730.12.5
stable59.17.467.42.766.42.6
total100.0.100.0.100.0.
Southern Alpscritical5.73.92.70.93.00.9
less stable31.57.935.62.735.22.6
stable62.88.261.72.861.82.6
total100.0.100.0.100.0.
Switzerlandcritical5.81.56.00.56.00.4
less stable40.33.034.10.934.60.9
stable53.93.159.90.959.40.9
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160112/146491

NFI3

forest area: avalanches 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 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability1000 ha± %1000 ha± %1000 ha± %
Western Juracritical..10.01810.018
less stable0.77138.2938.98
stable3.93096.04100.04
total4.627144.22148.92
Eastern Juracritical..2.0442.044
less stable..19.41119.411
stable..25.6925.69
total..47.0347.03
Western Plateaucritical..2.1442.144
less stable..18.11218.112
stable..27.0927.09
total..47.2447.24
Central Plateaucritical..5.0245.024
less stable..28.0828.08
stable..35.8735.87
total..68.7268.72
Eastern Plateaucritical..10.01810.018
less stable..39.7839.78
stable..60.4560.45
total..110.12110.12
Western Pre-Alpscritical..3.0343.034
less stable1.54911.91513.314
stable1.55023.3924.89
total2.93538.1541.14
Central Pre-Alpscritical0.7716.8227.521
less stable3.63136.9840.58
stable2.53744.1746.67
total6.82287.8394.72
Eastern Pre-Alpscritical..3.9293.929
less stable..19.61219.612
stable2.93542.5645.46
total2.93566.1368.93
Northwestern Alpscritical1.1572.1403.233
less stable6.42318.21224.610
stable2.93524.01026.89
total10.41744.3654.74
Central Alpscritical..0.31000.3100
less stable3.1326.3229.417
stable1.74410.71512.414
total4.82517.31122.18
Northeastern Alpscritical0.41002.9353.233
less stable1.8447.9199.717
stable3.92911.81515.712
total6.12222.6928.76
Southwestern Alpscritical1.4504.1285.525
less stable10.31818.91229.110
stable12.71646.4759.06
total24.41169.3593.73
Southeastern Alpscritical1.1583.2334.228
less stable5.32530.61035.89
stable9.11969.9579.05
total15.514103.63119.03
Southern Alpscritical0.7712.8353.531
less stable3.93038.1942.08
stable7.82165.9673.75
total12.416106.94119.33
Switzerlandcritical5.32658.2863.57
less stable36.610331.73368.23
stable48.98583.32632.22
total90.86973.211063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160113/146492

NFI3

forest area: avalanches 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 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....1.01.01.61.6..2.82.81.20.7
21-40%....5.82.34.52.55.43.7..4.31.3
41-60%7.87.5..11.53.120.95.013.55.610.95.113.92.1
61-80%15.410.0..14.43.426.85.445.98.235.17.825.12.7
over 80%76.811.7..67.34.646.26.135.17.951.28.255.53.1
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.80.40.70.32.40.62.21.13.01.10.70.51.50.2
21-40%1.60.61.40.43.50.75.51.78.91.91.00.62.90.3
41-60%5.31.02.10.512.01.218.92.920.22.67.51.58.80.5
61-80%11.31.47.01.020.31.427.83.329.53.022.12.416.60.7
over 80%81.01.788.81.261.71.745.53.738.43.268.82.670.30.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%0.80.40.70.32.30.52.00.92.61.00.90.51.50.2
21-40%1.50.51.40.43.70.65.31.48.41.70.90.53.00.3
41-60%5.31.02.10.512.01.119.52.519.32.47.91.59.20.5
61-80%11.41.47.01.019.61.327.52.831.82.823.52.317.30.7
over 80%80.91.788.81.262.41.645.73.238.02.966.92.569.00.8
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 #160114/146493

NFI3

forest area: avalanches 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 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches 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%....0.41000.4100..0.41001.158
21-40%....2.1411.0580.771..3.930
41-60%0.4100..4.3294.8261.8441.45012.617
61-80%0.771..5.3266.2236.0244.62722.812
over 80%3.631..24.81210.6174.6276.82350.48
total4.727..36.9922.91113.11613.21690.86
outside perimeter0-20%1.4501.8456.8231.4502.5380.77114.616
21-40%2.9353.5319.6193.4317.4211.15828.011
41-60%9.7195.32633.41011.71616.9148.22085.16
61-80%20.91217.71456.5717.11324.71124.111161.04
over 80%149.53225.62171.5328.01032.2975.15681.81
total184.52253.91277.7261.6583.64109.24970.61
total0-20%1.4501.8457.1221.7452.5381.15815.715
21-40%2.9353.53111.8174.4278.1201.15831.910
41-60%10.1195.32637.6916.51418.6139.61997.76
61-80%21.61217.71461.8723.31130.7928.710183.84
over 80%153.13225.62196.3338.6836.7881.85732.21
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160115/146494

NFI3

forest area: avalanches 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 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes) %± %± %±
AG0-20%......
21-40%..2.51.42.51.4
41-60%..4.11.84.11.8
61-80%..4.11.84.11.8
over 80%..89.32.889.32.8
total..100.0.100.0.
AI0-20%......
21-40%......
41-60%66.727.98.38.220.010.6
61-80%..8.38.26.76.6
over 80%33.328.083.311.173.311.8
total100.0.100.0.100.0.
AR0-20%......
21-40%......
41-60%..4.24.24.04.0
61-80%..8.35.88.05.5
over 80%100.0.87.56.988.06.6
total100.0.100.0.100.0.
BE0-20%2.42.41.90.71.90.6
21-40%9.74.62.60.83.20.8
41-60%9.94.78.31.38.51.3
61-80%17.05.914.51.714.71.6
over 80%60.97.672.72.171.72.1
total100.0.100.0.100.0.
BL/BS0-20%......
21-40%......
41-60%......
61-80%..4.33.04.33.0
over 80%..95.73.095.73.0
total..100.0.100.0.
FR0-20%..1.91.31.81.3
21-40%..1.91.31.81.3
41-60%33.327.311.23.111.83.1
61-80%..12.23.211.83.1
over 80%66.727.372.94.372.74.3
total100.0.100.0.100.0.
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..100.0.100.0.
total..100.0.100.0.
GL0-20%......
21-40%10.09.6..2.42.4
41-60%10.09.619.47.217.15.9
61-80%40.015.616.16.722.06.5
over 80%40.015.664.58.758.57.8
total100.0.100.0.100.0.
GR0-20%..2.30.82.00.7
21-40%3.62.57.41.46.91.3
41-60%14.44.716.72.016.41.8
61-80%41.06.629.82.431.42.3
over 80%41.06.643.82.643.42.5
total100.0.100.0.100.0.
JU0-20%......
21-40%......
41-60%..2.41.72.31.6
61-80%100.0.16.54.018.44.2
over 80%..81.24.379.34.4
total100.0.100.0.100.0.
LU0-20%......
21-40%..2.41.42.41.4
41-60%..2.41.42.41.4
61-80%..15.63.315.33.2
over 80%100.0.79.63.779.93.6
total100.0.100.0.100.0.
NE0-20%..1.51.51.41.4
21-40%..1.21.21.21.2
41-60%..6.12.65.92.6
61-80%..13.33.812.93.6
over 80%100.0.77.94.678.74.5
total100.0.100.0.100.0.
NW0-20%......
21-40%......
41-60%......
61-80%..14.39.611.88.0
over 80%100.0.85.79.688.28.0
total100.0.100.0.100.0.
OW0-20%..2.01.91.81.8
21-40%..6.53.75.93.3
41-60%..19.65.917.75.4
61-80%20.018.130.56.929.56.4
over 80%80.018.141.47.345.27.0
total100.0.100.0.100.0.
SG0-20%..2.41.32.21.2
21-40%10.09.51.61.12.21.2
41-60%..7.12.36.52.1
61-80%10.09.515.73.215.33.1
over 80%80.012.673.33.973.83.8
total100.0.100.0.100.0.
SH0-20%......
21-40%......
41-60%......
61-80%......
over 80%..100.0.100.0.
total..100.0.100.0.
SO0-20%..1.21.21.21.2
21-40%..1.21.21.21.2
41-60%..3.62.13.62.1
61-80%..6.02.66.02.6
over 80%..88.03.688.03.6
total..100.0.100.0.
SZ0-20%..3.12.22.82.0
21-40%..9.23.68.43.3
41-60%16.715.39.33.69.93.6
61-80%..23.15.321.14.9
over 80%83.315.255.46.257.75.9
total100.0.100.0.100.0.
TG0-20%..1.81.81.81.8
21-40%......
41-60%..1.41.41.41.4
61-80%..4.32.44.32.4
over 80%..92.53.392.53.3
total..100.0.100.0.
TI0-20%4.54.40.80.61.20.7
21-40%..0.40.40.40.4
41-60%8.75.97.81.77.81.6
61-80%30.49.620.32.621.22.5
over 80%56.410.370.72.969.42.8
total100.0.100.0.100.0.
UR0-20%..3.33.22.62.6
21-40%......
41-60%11.110.514.56.113.85.3
61-80%11.110.523.67.421.06.3
over 80%77.813.958.58.562.57.4
total100.0.100.0.100.0.
VD0-20%..2.10.92.00.9
21-40%..2.10.92.00.9
41-60%10.09.58.51.88.51.8
61-80%10.09.515.22.315.02.3
over 80%80.012.672.12.972.52.8
total100.0.100.0.100.0.
VS0-20%1.51.52.01.01.90.8
21-40%4.22.45.41.65.11.3
41-60%21.14.818.42.719.12.4
61-80%25.35.226.33.126.02.7
over 80%47.85.948.03.547.93.0
total100.0.100.0.100.0.
ZG0-20%..7.77.77.77.7
21-40%......
41-60%..15.410.415.410.4
61-80%..7.77.77.77.7
over 80%..69.213.369.213.3
total..100.0.100.0.
ZH0-20%..0.70.70.70.7
21-40%..2.81.42.81.4
41-60%......
61-80%..5.61.95.61.9
over 80%..90.92.490.92.4
total..100.0.100.0.
Switzerland0-20%1.20.71.50.21.50.2
21-40%4.21.32.90.33.00.3
41-60%13.92.18.80.59.20.5
61-80%25.32.716.50.717.30.7
over 80%55.43.170.30.869.10.8
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #160116/146495

NFI3

forest area: avalanches 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 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %
AG0-20%......
21-40%..1.2571.257
41-60%..2.0442.044
61-80%..2.0442.044
over 80%..43.5443.54
total..48.7248.72
AI0-20%......
21-40%......
41-60%0.6690.31001.054
61-80%..0.31000.3100
over 80%0.31003.2223.519
total1.0543.9174.811
AR0-20%......
21-40%......
41-60%..0.31000.3100
61-80%..0.6690.669
over 80%0.31006.7107.19
total0.31007.768.05
BE0-20%0.31002.8353.133
21-40%1.4503.8305.226
41-60%1.45012.31613.715
61-80%2.43821.51223.911
over 80%8.620107.74116.33
total14.115148.22162.32
BL/BS0-20%......
21-40%......
41-60%......
61-80%..0.8700.870
over 80%..18.3718.37
total..19.1619.16
FR0-20%..0.7700.770
21-40%..0.7700.770
41-60%0.41004.5284.827
61-80%..4.9264.926
over 80%0.77029.1729.97
total1.15740.0441.13
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..2.2342.234
total..2.2342.234
GL0-20%......
21-40%0.4100..0.4100
41-60%0.41002.3392.736
61-80%1.5491.9433.531
over 80%1.5497.7189.216
total3.92911.91215.88
GR0-20%..2.8352.835
21-40%0.7719.1199.819
41-60%2.83520.51223.312
61-80%8.02036.6944.68
over 80%8.02053.7761.86
total19.613122.83142.33
JU0-20%......
21-40%......
41-60%..0.8700.870
61-80%0.8705.5256.223
over 80%..26.9626.96
total0.87033.1333.93
LU0-20%......
21-40%..0.9570.957
41-60%..0.9570.957
61-80%..6.0226.022
over 80%0.67030.8631.45
total0.67038.7339.33
NE0-20%..0.41000.4100
21-40%..0.31000.3100
41-60%..1.6441.644
61-80%..3.5283.528
over 80%1.05720.6721.57
total1.05726.4527.44
NW0-20%......
21-40%......
41-60%......
61-80%..0.8690.869
over 80%1.2554.6205.816
total1.2555.4176.513
OW0-20%..0.31000.3100
21-40%..1.1571.157
41-60%..3.4313.431
61-80%0.41005.2235.622
over 80%1.5497.1198.616
total1.94317.2619.04
SG0-20%..1.1581.158
21-40%0.41000.7711.158
41-60%..3.2333.233
61-80%0.41007.2217.621
over 80%2.93533.6736.57
total3.63145.9549.54
SH0-20%......
21-40%......
41-60%......
61-80%......
over 80%..12.8312.83
total..12.8312.83
SO0-20%..0.41000.4100
21-40%..0.41000.4100
41-60%..1.1571.157
61-80%..1.9441.944
over 80%..27.6527.65
total..31.4431.44
SZ0-20%..0.7700.770
21-40%..2.2402.240
41-60%0.41002.2402.537
61-80%..5.4245.424
over 80%1.84413.01314.811
total2.24023.5625.75
TG0-20%..0.41000.4100
21-40%......
41-60%..0.31000.3100
61-80%..0.9570.957
over 80%..19.4519.45
total..21.0421.04
TI0-20%0.41000.7711.158
21-40%..0.41000.4100
41-60%0.7716.8227.521
61-80%2.53717.81320.312
over 80%4.72761.9666.65
total8.32087.6495.94
UR0-20%..0.41000.4100
21-40%......
41-60%0.31001.7442.039
61-80%0.31002.7343.032
over 80%2.3366.6209.016
total3.03111.41414.311
VD0-20%..1.8451.845
21-40%..1.8451.845
41-60%0.41007.6228.021
61-80%0.410013.61614.015
over 80%3.03564.5567.55
total3.83189.4393.23
VS0-20%0.41001.4501.745
21-40%1.0583.8304.826
41-60%5.12512.71617.913
61-80%6.22318.21324.411
over 80%11.71633.2944.97
total24.41169.3593.73
ZG0-20%..0.41000.4100
21-40%......
41-60%..0.9680.968
61-80%..0.41000.4100
over 80%..3.9213.921
total..5.695.69
ZH0-20%..0.41000.4100
21-40%..1.4501.450
41-60%......
61-80%..2.8352.835
over 80%..45.8345.83
total..50.4250.42
Switzerland0-20%1.15814.81615.915
21-40%3.83027.91131.710
41-60%12.51785.4697.96
61-80%22.912160.74183.64
over 80%50.18684.71734.81
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #160117/146496

NFI3

forest area: avalanches 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 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %±
inside perimeter0-20%......1.20.83.02.91.20.7
21-40%....5.73.95.11.7..4.21.3
41-60%7.67.3..14.35.915.42.78.74.813.92.2
61-80%15.410.0..14.35.925.73.337.18.225.12.7
over 80%77.011.7..65.78.052.63.851.38.455.53.1
total100.0...100.0.100.0.100.0.100.0.
outside perimeter0-20%0.60.30.90.41.30.53.20.70.70.51.50.2
21-40%1.10.51.70.52.60.76.10.91.00.62.90.3
41-60%4.80.92.20.69.61.317.61.47.31.58.80.5
61-80%10.11.37.11.017.61.726.71.621.82.416.50.7
over 80%83.41.688.01.368.92.046.41.869.22.770.30.8
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%0.60.30.90.41.20.52.80.60.90.51.50.2
21-40%1.10.51.70.52.80.75.90.80.90.53.00.3
41-60%4.80.92.20.69.91.317.21.37.41.49.20.5
61-80%10.31.37.11.017.41.626.51.523.42.317.30.7
over 80%83.21.688.01.368.71.947.61.767.42.669.10.8
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 #160118/146497

NFI3

forest area: avalanches 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 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches 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%......0.7710.41001.158
21-40%....0.7713.133..3.830
41-60%0.4100..1.8459.3191.15812.617
61-80%0.771..1.84515.5154.62722.712
over 80%3.731..8.32131.8106.42350.18
total4.727..12.61660.5712.41690.36
outside perimeter0-20%1.1582.1412.5388.1210.77114.616
21-40%2.2413.9305.02615.6151.15827.811
41-60%9.1204.92618.41444.787.82184.96
61-80%19.31316.21433.91067.8723.311160.54
over 80%159.22199.22132.34117.9574.05682.51
total190.92226.31192.12254.22106.94970.41
total0-20%1.1582.1412.5388.8201.15815.715
21-40%2.2413.9305.82518.7131.15831.610
41-60%9.5194.92620.21354.188.92097.56
61-80%20.11316.21435.7983.4627.910183.24
over 80%162.82199.22140.63149.7480.45732.61
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160119/146498

NFI3

forest area: avalanches 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 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%..1.81.8..1.51.5..3.02.91.20.7
21-40%..7.13.45.13.54.22.44.53.1..4.31.3
41-60%7.87.58.93.812.85.421.14.815.95.58.74.813.92.1
61-80%15.410.016.14.915.45.825.35.238.67.337.18.225.22.7
over 80%76.811.766.16.366.77.647.85.940.97.451.38.455.53.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.80.32.30.72.40.92.01.02.71.00.70.51.50.2
21-40%1.50.43.20.83.01.05.41.68.21.61.00.62.90.3
41-60%3.30.512.11.510.11.718.42.718.92.37.31.58.80.5
61-80%8.50.820.11.817.92.226.33.130.22.721.82.416.60.7
over 80%85.91.062.32.266.72.748.03.540.02.969.22.770.30.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%0.80.32.30.62.10.81.90.82.40.80.90.51.50.2
21-40%1.40.33.60.83.31.05.11.37.71.50.90.53.00.3
41-60%3.40.511.71.410.41.719.12.418.52.17.41.49.20.5
61-80%8.60.819.71.717.62.126.02.731.32.523.42.317.30.7
over 80%85.81.062.72.166.72.647.93.040.12.767.42.669.00.8
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 #160120/146499
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