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NFI3

forest area: avalanches SilvaProtect, modelled and assigned · regeneration cover · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedregeneration cover %± %± %± %± %± %± %±
inside perimeter< 1%11.56.31.71.27.22.82.21.35.42.21.21.23.80.8
1-9%30.79.031.44.235.05.241.64.238.84.637.05.436.62.0
10-25%19.27.734.74.322.94.630.63.928.84.335.85.330.31.9
26-50%23.18.318.23.520.54.421.23.519.83.816.24.119.51.7
51-75%11.56.35.82.112.03.63.61.66.32.38.63.17.01.1
76-100%3.83.88.32.52.41.70.70.70.90.91.21.22.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter< 1%4.30.43.00.53.90.82.70.73.10.72.40.63.50.2
1-9%17.90.824.31.328.91.832.82.135.21.835.71.725.70.6
10-25%25.50.935.01.527.11.734.42.131.41.735.01.729.90.6
26-50%21.90.922.61.321.81.620.21.819.31.516.41.320.90.5
51-75%15.40.79.40.910.61.28.01.27.21.07.50.911.30.4
76-100%15.00.75.70.77.61.01.90.63.80.73.00.68.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total< 1%4.40.42.90.54.30.72.60.63.40.62.30.53.60.2
1-9%18.10.825.01.329.61.734.71.935.71.735.81.626.60.5
10-25%25.40.934.91.426.71.633.61.931.01.635.11.629.90.6
26-50%21.90.822.11.221.71.520.41.619.31.416.41.320.70.5
51-75%15.40.79.00.810.71.17.11.07.10.97.60.910.90.4
76-100%14.80.76.00.77.10.91.70.53.40.62.80.68.20.3
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 #158669/145048

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · regeneration cover · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedregeneration cover1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter< 1%0.5580.4711.0410.5581.1410.21003.722
1-9%1.4356.9165.0189.7137.5155.31835.97
10-25%0.9457.6153.3237.2155.6175.11829.78
26-50%1.1414.0212.9244.9183.9212.32819.19
51-75%0.5581.3381.7310.9451.2381.2386.816
76-100%0.21001.8320.3710.21000.21000.21002.925
total4.72021.9914.41023.4819.4914.31198.04
outside perimeter< 1%18.4105.6184.5192.4273.9213.42338.17
1-9%76.4444.6633.3728.8743.4649.05275.62
10-25%108.8464.3531.3730.2738.7648.05321.32
26-50%93.4441.5625.2817.7923.8822.58224.13
51-75%65.8517.31012.2127.0158.91410.313121.54
76-100%63.8510.5138.8141.7314.7194.12193.64
total426.61183.82115.3287.93123.32137.221074.21
total< 1%18.9106.0175.5172.9244.9193.52241.86
1-9%77.8451.5538.4638.6650.9554.35311.52
10-25%109.7471.9434.6637.4644.3553.25351.02
26-50%94.4445.5628.1722.7827.6724.88243.22
51-75%66.3518.61013.9117.91410.11311.512128.34
76-100%64.0512.3129.2131.9304.9194.22096.44
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158670/145049

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · regeneration cover · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionregeneration cover %± %± %±
Western Jura< 1%12.06.56.20.86.40.8
1-9%32.09.318.61.318.91.3
10-25%20.08.029.51.629.21.6
26-50%20.08.021.01.420.91.4
51-75%12.06.513.81.213.71.2
76-100%4.03.911.01.110.81.1
total100.0.100.0.100.0.
Eastern Jura< 1%..4.11.34.11.3
1-9%..15.62.315.62.3
10-25%..22.62.722.62.7
26-50%..18.12.518.12.5
51-75%..11.12.011.12.0
76-100%..28.42.928.42.9
total..100.0.100.0.
Western Plateau< 1%..3.81.23.81.2
1-9%..17.82.317.82.3
10-25%..26.42.726.42.7
26-50%..25.72.725.72.7
51-75%..17.02.317.02.3
76-100%..9.41.89.41.8
total..100.0.100.0.
Central Plateau< 1%..2.20.72.20.7
1-9%..17.01.916.91.8
10-25%..26.02.225.92.2
26-50%100.0.25.22.125.42.1
51-75%..16.01.816.01.8
76-100%..13.61.713.51.7
total100.0.100.0.100.0.
Eastern Plateau< 1%..3.40.73.40.7
1-9%..18.61.618.61.6
10-25%..20.61.620.61.6
26-50%..20.71.620.71.6
51-75%..18.31.618.31.6
76-100%..18.31.618.31.6
total..100.0.100.0.
Western Pre-Alps< 1%..3.61.23.21.1
1-9%34.79.325.32.926.22.8
10-25%26.88.727.53.027.42.8
26-50%27.08.728.83.028.62.9
51-75%7.75.210.82.110.51.9
76-100%3.93.84.11.34.01.3
total100.0.100.0.100.0.
Central Pre-Alps< 1%6.14.22.70.72.90.7
1-9%30.38.021.81.822.31.8
10-25%33.38.237.62.137.32.1
26-50%12.15.723.31.922.71.8
51-75%6.14.29.31.39.11.2
76-100%12.15.75.41.05.81.0
total100.0.100.0.100.0.
Eastern Pre-Alps< 1%6.36.13.20.93.30.9
1-9%43.812.428.52.229.12.2
10-25%12.58.328.72.328.12.2
26-50%25.010.822.32.122.42.0
51-75%12.58.310.41.510.51.5
76-100%..6.91.36.71.2
total100.0.100.0.100.0.
Northwestern Alps< 1%..3.31.12.70.9
1-9%30.65.928.22.728.62.5
10-25%38.76.236.12.936.62.6
26-50%17.74.916.22.216.52.0
51-75%4.82.78.71.78.01.5
76-100%8.13.57.61.67.71.4
total100.0.100.0.100.0.
Central Alps< 1%3.23.24.31.94.11.6
1-9%51.59.028.34.233.23.9
10-25%19.47.129.44.227.33.7
26-50%12.96.020.83.819.13.3
51-75%12.96.012.13.012.32.7
76-100%..5.12.04.11.6
total100.0.100.0.100.0.
Northeastern Alps< 1%11.15.25.61.96.71.9
1-9%16.96.330.83.928.03.4
10-25%30.57.721.13.423.03.2
26-50%24.97.221.63.422.33.1
51-75%11.15.29.12.49.52.2
76-100%5.53.811.82.710.62.3
total100.0.100.0.100.0.
Southwestern Alps< 1%2.21.32.70.72.60.6
1-9%41.64.232.82.134.71.9
10-25%30.63.934.42.133.61.9
26-50%21.23.520.21.820.41.6
51-75%3.61.68.01.27.11.0
76-100%0.70.71.90.61.70.5
total100.0.100.0.100.0.
Southeastern Alps< 1%5.42.23.10.73.40.6
1-9%38.84.635.21.835.71.7
10-25%28.84.331.41.731.01.6
26-50%19.83.819.31.519.31.4
51-75%6.32.37.21.07.10.9
76-100%0.90.93.80.73.40.6
total100.0.100.0.100.0.
Southern Alps< 1%1.21.22.40.62.30.5
1-9%37.05.435.71.735.81.6
10-25%35.85.335.01.735.11.6
26-50%16.24.116.41.316.41.3
51-75%8.63.17.50.97.60.9
76-100%1.21.23.00.62.80.6
total100.0.100.0.100.0.
Switzerland< 1%3.70.83.60.23.60.2
1-9%36.72.025.70.626.60.5
10-25%30.21.929.90.629.90.6
26-50%19.51.720.80.520.70.5
51-75%7.01.111.30.410.90.4
76-100%2.90.78.70.48.30.3
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158671/145050

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · regeneration cover · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionregeneration cover1000 ha± %1000 ha± %1000 ha± %
Western Jura< 1%0.5589.3149.813
1-9%1.43527.8729.27
10-25%0.94544.1644.95
26-50%0.94531.3732.27
51-75%0.55820.6921.19
76-100%0.210016.51016.710
total4.520149.51154.01
Eastern Jura< 1%..1.9311.931
1-9%..7.4157.415
10-25%..10.71210.712
26-50%..8.6148.614
51-75%..5.3185.318
76-100%..13.41013.410
total..47.2247.22
Western Plateau< 1%..1.9311.931
1-9%..8.8138.813
10-25%..13.11113.111
26-50%..12.71112.711
51-75%..8.4148.414
76-100%..4.6194.619
total..49.4349.43
Central Plateau< 1%..1.5331.533
1-9%..11.81111.811
10-25%..18.1918.19
26-50%0.210017.5917.79
51-75%..11.11111.111
76-100%..9.4139.413
total0.210069.5269.62
Eastern Plateau< 1%..3.8213.821
1-9%..20.7920.79
10-25%..22.8822.88
26-50%..23.0823.08
51-75%..20.3920.39
76-100%..20.3920.39
total..110.91110.91
Western Pre-Alps< 1%..1.5351.535
1-9%1.73310.31211.911
10-25%1.33711.21112.511
26-50%1.33711.71113.010
51-75%0.4714.4204.819
76-100%0.21001.7331.831
total4.81940.7345.53
Central Pre-Alps< 1%0.4712.5262.925
1-9%1.83120.3922.18
10-25%2.03035.0637.06
26-50%0.75021.8822.58
51-75%0.4718.6149.014
76-100%0.7505.0185.817
total5.91793.3299.22
Eastern Pre-Alps< 1%0.21002.3272.526
1-9%1.23820.2821.58
10-25%0.47120.4820.88
26-50%0.75015.81016.59
51-75%0.4717.4157.714
76-100%..4.9184.918
total2.82571.1273.92
Northwestern Alps< 1%..1.6331.633
1-9%3.42214.01017.59
10-25%4.32018.0922.38
26-50%2.0308.11410.113
51-75%0.5584.3204.919
76-100%0.9443.8214.719
total11.21249.8461.03
Central Alps< 1%0.21000.9441.140
1-9%3.0246.2169.213
10-25%1.1406.4167.514
26-50%0.8504.5195.318
51-75%0.8502.6263.423
76-100%..1.1401.140
total5.81721.8727.65
Northeastern Alps< 1%0.7501.4352.028
1-9%1.0417.5148.513
10-25%1.9305.1177.015
26-50%1.5335.3176.815
51-75%0.7502.2272.923
76-100%0.3712.9233.222
total6.11624.3630.44
Southwestern Alps< 1%0.5582.4272.924
1-9%9.71328.8738.66
10-25%7.21530.2737.46
26-50%4.91817.7922.78
51-75%0.9457.0157.914
76-100%0.21001.7311.930
total23.4887.93111.32
Southeastern Alps< 1%1.1413.9214.919
1-9%7.51543.4650.95
10-25%5.61738.7644.35
26-50%3.92123.8827.67
51-75%1.2388.91410.113
76-100%0.21004.7194.919
total19.49123.32142.82
Southern Alps< 1%0.21003.4233.522
1-9%5.31849.0554.35
10-25%5.11848.0553.25
26-50%2.32822.5824.88
51-75%1.23810.31311.512
76-100%0.21004.1214.220
total14.311137.22151.62
Switzerland< 1%3.72238.3741.96
1-9%36.17276.12312.32
10-25%29.78321.82351.52
26-50%19.19224.33243.52
51-75%6.916121.44128.34
76-100%2.82594.1497.04
total98.441076.011174.41

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158672/145051

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes) %± %± %± %± %± %± %±
inside perimeter< 1%11.66.3..4.01.32.41.35.32.31.11.13.80.8
1-4%11.66.3..12.92.214.23.121.34.217.24.115.21.5
5-9%19.17.7..18.22.628.44.019.24.122.94.521.41.7
10-25%19.37.7..29.83.030.74.130.84.833.35.130.21.9
26-50%23.18.3..20.92.719.73.518.14.016.24.019.51.7
51-75%11.66.3..8.91.93.91.74.32.18.02.97.01.1
76-100%3.93.8..5.31.50.80.81.11.11.11.12.90.7
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter< 1%6.00.72.90.43.40.42.90.83.10.72.40.53.50.2
1-4%6.60.87.30.711.40.812.81.615.91.514.41.210.50.4
5-9%11.81.010.10.815.60.922.82.018.81.621.41.515.20.5
10-25%28.31.423.81.132.61.132.32.231.41.934.91.729.90.6
26-50%19.71.224.71.121.21.019.71.919.11.616.61.320.90.5
51-75%13.91.116.11.09.50.77.71.37.51.17.50.911.30.4
76-100%13.71.115.10.96.20.61.80.64.10.82.90.68.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total< 1%6.10.72.90.43.50.42.80.73.40.72.30.53.60.2
1-4%6.70.87.30.711.50.713.11.416.61.414.71.210.90.4
5-9%12.01.010.10.815.90.824.01.818.91.521.51.415.70.4
10-25%28.11.423.81.132.31.132.01.931.31.834.71.629.90.6
26-50%19.81.224.71.121.20.919.71.719.01.516.51.220.80.5
51-75%13.81.116.11.09.50.76.91.17.11.07.50.910.90.4
76-100%13.51.015.10.96.10.51.60.53.70.72.70.58.20.3
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 #158673/145052

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter< 1%0.558..1.6330.5580.9450.21003.722
1-4%0.558..5.2183.1233.5222.72614.911
5-9%0.945..7.3156.1163.2233.52221.09
10-25%0.945..11.9126.6165.1185.11829.78
26-50%1.141..8.4144.3203.0242.52719.29
51-75%0.558..3.6220.9450.7501.2386.916
76-100%0.2100..2.1290.21000.21000.21002.825
total4.719..40.1621.6816.51015.41098.34
outside perimeter< 1%11.4127.51510.5132.2283.2233.42338.27
1-4%12.51218.8935.179.91316.11020.29112.64
5-9%22.4925.9848.3617.6919.1930.07163.33
10-25%54.0561.05101.0424.9731.9748.85321.62
26-50%37.5663.3565.7515.21019.4923.28224.33
51-75%26.4841.3629.586.0177.71510.413121.34
76-100%26.1838.8619.291.4354.2204.12193.74
total190.31256.61309.3177.03101.62140.121075.01
total< 1%11.9127.51512.1122.7254.0213.52241.96
1-4%13.01118.8940.3612.91119.6922.98127.64
5-9%23.3825.9855.7523.7822.3833.57184.43
10-25%54.9561.05112.9331.5637.0654.05351.32
26-50%38.6663.3574.1419.4922.4825.78243.52
51-75%27.0841.3633.176.8158.41411.712128.24
76-100%26.3838.8621.391.5334.4204.22096.54
total195.01256.61349.4198.72118.12155.521173.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158674/145053

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover of regeneration (7 classes) %± %± %±
AG< 1%..5.31.45.31.4
1-4%..7.61.67.61.6
5-9%..10.61.910.61.9
10-25%..21.22.521.22.5
26-50%..20.52.520.52.5
51-75%..14.82.214.82.2
76-100%..20.12.520.12.5
total..100.0.100.0.
AI< 1%25.021.93.23.25.73.9
1-4%25.021.93.23.25.73.9
5-9%50.025.223.27.726.27.6
10-25%..41.68.936.98.2
26-50%..19.27.117.06.4
51-75%..6.44.45.73.9
76-100%..3.23.22.82.8
total100.0.100.0.100.0.
AR< 1%..2.12.12.02.0
1-4%..12.44.811.94.6
5-9%50.035.616.65.417.95.4
10-25%..35.57.034.16.8
26-50%50.035.618.65.619.95.7
51-75%..12.74.912.24.7
76-100%..2.12.12.02.0
total100.0.100.0.100.0.
BE< 1%2.51.73.60.63.50.6
1-4%12.53.79.51.09.81.0
5-9%23.74.814.01.214.81.1
10-25%33.85.331.61.631.81.5
26-50%16.34.122.31.421.81.3
51-75%3.72.19.91.09.40.9
76-100%7.52.99.11.09.00.9
total100.0.100.0.100.0.
BL/BS< 1%..1.01.01.01.0
1-4%..3.01.73.01.7
5-9%..2.81.62.81.6
10-25%..33.34.733.34.7
26-50%..19.73.919.73.9
51-75%..16.73.716.73.7
76-100%..23.64.223.64.2
total..100.0.100.0.
FR< 1%..3.11.23.01.1
1-4%14.313.28.91.99.11.9
5-9%14.313.211.22.111.32.1
10-25%14.313.229.53.129.03.0
26-50%57.118.726.32.927.32.9
51-75%..14.32.313.92.3
76-100%..6.71.76.51.6
total100.0.100.0.100.0.
GE< 1%......
1-4%......
5-9%......
10-25%..18.912.518.912.5
26-50%..52.815.852.815.8
51-75%..28.314.428.314.4
76-100%......
total..100.0.100.0.
GL< 1%17.37.911.43.812.93.5
1-4%8.75.912.84.011.83.3
5-9%4.74.614.34.211.93.4
10-25%17.37.915.84.416.23.8
26-50%39.010.214.44.220.54.2
51-75%8.75.914.34.212.93.5
76-100%4.34.317.14.513.93.6
total100.0.100.0.100.0.
GR< 1%5.21.92.80.63.20.6
1-4%19.43.415.71.216.21.2
5-9%17.93.320.11.419.81.3
10-25%30.64.032.91.632.61.5
26-50%18.73.418.11.318.21.2
51-75%7.52.36.50.86.70.8
76-100%0.70.73.90.73.40.6
total100.0.100.0.100.0.
JU< 1%..4.91.64.81.6
1-4%..7.11.96.91.9
5-9%20.017.911.52.411.72.3
10-25%20.017.929.53.429.33.3
26-50%40.021.919.12.919.72.9
51-75%20.017.911.52.411.72.4
76-100%..16.42.716.02.7
total100.0.100.0.100.0.
LU< 1%33.327.32.51.02.91.1
1-4%33.327.36.81.67.11.7
5-9%..12.62.212.52.1
10-25%33.327.333.43.133.43.1
26-50%..24.42.824.12.8
51-75%..14.32.314.12.2
76-100%..5.91.55.81.5
total100.0.100.0.100.0.
NE< 1%..3.21.43.11.4
1-4%..4.51.74.31.6
5-9%16.715.35.71.96.11.9
10-25%..31.23.730.13.6
26-50%33.319.329.33.629.43.6
51-75%33.319.320.43.220.93.2
76-100%16.715.35.71.96.11.9
total100.0.100.0.100.0.
NW< 1%......
1-4%..15.26.312.25.2
5-9%25.015.427.07.826.67.0
10-25%25.015.433.48.331.87.3
26-50%12.511.812.25.812.25.2
51-75%..6.14.24.93.4
76-100%37.517.26.14.212.25.2
total100.0.100.0.100.0.
OW< 1%11.110.57.12.67.42.5
1-4%11.110.56.12.46.52.4
5-9%22.213.910.13.011.13.0
10-25%44.416.645.45.045.44.8
26-50%..14.13.513.03.2
51-75%11.110.57.12.67.42.5
76-100%..10.13.09.32.8
total100.0.100.0.100.0.
SG< 1%..2.81.02.60.9
1-4%4.84.715.62.114.92.0
5-9%23.89.314.92.115.52.1
10-25%38.110.623.62.524.62.5
26-50%9.56.421.92.421.02.3
51-75%19.08.610.41.811.01.8
76-100%4.84.710.81.810.31.7
total100.0.100.0.100.0.
SH< 1%......
1-4%..4.72.74.72.7
5-9%..9.43.79.43.7
10-25%..23.45.323.45.3
26-50%..25.05.425.05.4
51-75%..7.83.47.83.4
76-100%..29.75.729.75.7
total..100.0.100.0.
SO< 1%..8.12.08.02.0
1-4%..7.01.96.91.9
5-9%..10.22.210.22.2
10-25%100.0.22.63.123.03.1
26-50%..19.92.919.82.9
51-75%..15.62.715.52.7
76-100%..16.72.716.62.7
total100.0.100.0.100.0.
SZ< 1%..3.91.63.71.5
1-4%24.715.212.32.712.92.6
5-9%12.611.820.13.219.73.1
10-25%25.115.427.33.627.23.5
26-50%12.611.820.83.320.43.2
51-75%25.115.411.02.511.72.5
76-100%..4.61.74.31.6
total100.0.100.0.100.0.
TG< 1%..3.91.73.91.7
1-4%..5.52.05.52.0
5-9%..10.32.710.32.7
10-25%..23.73.823.73.8
26-50%..17.33.417.33.4
51-75%..26.73.926.73.9
76-100%..12.63.012.63.0
total..100.0.100.0.
TI< 1%..2.70.62.50.6
1-4%15.54.814.31.414.41.3
5-9%24.15.620.81.621.01.6
10-25%34.46.233.81.933.91.8
26-50%17.35.017.31.517.31.4
51-75%6.93.38.41.18.31.0
76-100%1.71.72.70.62.60.6
total100.0.100.0.100.0.
UR< 1%4.34.34.32.44.32.1
1-4%34.810.05.72.812.93.5
5-9%17.47.911.53.812.93.5
10-25%21.78.632.95.630.14.8
26-50%13.07.028.65.424.74.5
51-75%8.75.912.84.011.83.4
76-100%..4.22.43.21.8
total100.0.100.0.100.0.
VD< 1%3.43.44.60.94.50.9
1-4%17.27.08.31.28.71.2
5-9%10.35.714.21.514.01.5
10-25%34.58.828.82.029.11.9
26-50%20.77.522.71.822.61.8
51-75%10.35.713.11.512.91.4
76-100%3.43.48.41.28.21.2
total100.0.100.0.100.0.
VS< 1%2.21.32.70.72.60.6
1-4%13.12.911.81.412.11.3
5-9%28.53.921.01.822.51.6
10-25%30.63.934.42.133.61.9
26-50%21.23.520.21.820.41.6
51-75%3.61.68.01.27.11.0
76-100%0.70.71.90.61.70.5
total100.0.100.0.100.0.
ZG< 1%......
1-4%..9.15.18.84.9
5-9%..6.14.25.94.1
10-25%..33.38.332.38.1
26-50%100.0.30.38.132.48.1
51-75%..9.15.18.84.9
76-100%..12.15.711.85.6
total100.0.100.0.100.0.
ZH< 1%..2.61.02.61.0
1-4%..9.01.89.01.8
5-9%..12.42.012.42.0
10-25%..16.62.316.62.3
26-50%..21.82.521.82.5
51-75%..16.22.316.22.3
76-100%..21.42.521.42.5
total..100.0.100.0.
Switzerland< 1%3.70.83.50.23.50.2
1-4%15.21.510.50.410.90.4
5-9%21.41.715.20.515.70.4
10-25%30.21.929.90.629.90.6
26-50%19.51.720.90.520.80.5
51-75%7.01.111.30.410.90.4
76-100%2.90.78.80.48.30.3
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158675/145054

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %
AG< 1%..2.6262.626
1-4%..3.7223.722
5-9%..5.2185.218
10-25%..10.41210.412
26-50%..10.01210.012
51-75%..7.2157.215
76-100%..9.8129.812
total..49.0249.02
AI< 1%0.21000.21000.370
1-4%0.21000.21000.370
5-9%0.3701.1361.431
10-25%..2.0232.023
26-50%..0.9380.938
51-75%..0.3700.370
76-100%..0.21000.2100
total0.6484.8105.47
AR< 1%..0.21000.2100
1-4%..1.0391.039
5-9%0.21001.3331.531
10-25%..2.8212.821
26-50%0.21001.5311.629
51-75%..1.0401.040
76-100%..0.21000.2100
total0.3707.968.26
BE< 1%0.4715.7176.017
1-4%1.83114.91116.710
5-9%3.42321.9925.28
10-25%4.81949.4554.25
26-50%2.32834.8737.26
51-75%0.55815.51016.010
76-100%1.14114.21115.310
total14.211156.42170.61
BL/BS< 1%..0.21000.2100
1-4%..0.6570.657
5-9%..0.6580.658
10-25%..6.8156.815
26-50%..4.0204.020
51-75%..3.4223.422
76-100%..4.8184.818
total..20.5420.54
FR< 1%..1.3371.337
1-4%0.21003.7223.821
5-9%0.21004.6194.819
10-25%0.210012.11112.311
26-50%0.75010.81211.511
51-75%..5.8175.817
76-100%..2.7252.725
total1.33741.0342.23
GE< 1%......
1-4%......
5-9%......
10-25%..0.6670.667
26-50%..1.6331.633
51-75%..0.9520.952
76-100%......
total..3.1133.113
GL< 1%0.7491.4342.128
1-4%0.3701.5321.929
5-9%0.21001.7301.929
10-25%0.7491.9292.625
26-50%1.5321.7313.321
51-75%0.3701.7312.128
76-100%0.21002.1282.226
total4.01912.0916.06
GR< 1%1.2384.2205.418
1-4%4.61923.4828.07
5-9%4.22029.9734.17
10-25%7.21549.0556.15
26-50%4.42027.0831.47
51-75%1.7319.71311.512
76-100%0.21005.7175.917
total23.58149.02172.41
JU< 1%..1.6331.633
1-4%..2.3272.327
5-9%0.21003.7213.920
10-25%0.21009.6129.812
26-50%0.4716.2156.615
51-75%0.21003.7213.920
76-100%..5.3175.317
total0.94432.5333.43
LU< 1%0.21001.0411.238
1-4%0.21002.7242.924
5-9%..5.1175.117
10-25%0.210013.51013.710
26-50%..9.9129.912
51-75%..5.8165.816
76-100%..2.4262.426
total0.55840.4340.93
NE< 1%..0.9450.945
1-4%..1.3371.337
5-9%0.21001.6331.831
10-25%..8.8128.812
26-50%0.4708.2138.613
51-75%0.4705.7166.115
76-100%0.21001.6331.831
total1.14028.2329.23
NW< 1%......
1-4%..1.0431.043
5-9%0.4701.7312.127
10-25%0.4702.2272.624
26-50%0.21000.8481.043
51-75%..0.4700.470
76-100%0.6560.4701.043
total1.6326.5108.06
OW< 1%0.21001.3371.434
1-4%0.21001.1401.337
5-9%0.4701.8312.228
10-25%0.7498.1128.811
26-50%..2.5252.525
51-75%0.21001.3371.434
76-100%..1.8301.830
total1.63217.8519.44
SG< 1%..1.4351.435
1-4%0.21007.9148.114
5-9%0.9447.5148.414
10-25%1.43511.91113.310
26-50%0.47111.01211.411
51-75%0.7505.3186.016
76-100%0.21005.4175.617
total3.72150.4354.13
SH< 1%......
1-4%..0.6570.657
5-9%..1.2391.239
10-25%..2.9232.923
26-50%..3.1223.122
51-75%..1.0431.043
76-100%..3.7203.720
total..12.4412.44
SO< 1%..2.6252.625
1-4%..2.3272.327
5-9%..3.3223.322
10-25%0.21007.4147.514
26-50%..6.5156.515
51-75%..5.1175.117
76-100%..5.4175.417
total0.210032.6332.83
SZ< 1%..1.1401.140
1-4%0.4713.5223.821
5-9%0.21005.6175.816
10-25%0.4707.7148.113
26-50%0.21005.9166.016
51-75%0.4703.1233.522
76-100%..1.3371.337
total1.53528.1429.64
TG< 1%..0.8440.844
1-4%..1.2371.237
5-9%..2.2272.227
10-25%..5.0175.017
26-50%..3.7203.720
51-75%..5.7155.715
76-100%..2.7242.724
total..21.3421.34
TI< 1%..3.0243.024
1-4%1.63315.91017.59
5-9%2.52723.2825.78
10-25%3.52237.8641.36
26-50%1.83219.3921.19
51-75%0.7509.41310.113
76-100%0.21003.0243.223
total10.313111.72121.92
UR< 1%0.21000.6570.749
1-4%1.5340.7492.228
5-9%0.7491.5342.228
10-25%0.9444.3195.217
26-50%0.6573.7214.319
51-75%0.4701.7332.029
76-100%..0.5580.558
total4.31913.1917.46
VD< 1%0.21004.3204.520
1-4%0.9457.8158.714
5-9%0.55813.41114.011
10-25%1.83127.2729.07
26-50%1.14121.4822.58
51-75%0.55812.31112.911
76-100%0.21008.0158.114
total5.31894.4299.72
VS< 1%0.5582.4272.924
1-4%3.12310.41213.511
5-9%6.71618.4925.18
10-25%7.21530.2737.46
26-50%4.91817.7922.78
51-75%0.9457.0157.914
76-100%0.21001.7311.930
total23.4887.93111.32
ZG< 1%......
1-4%..0.5560.556
5-9%..0.4700.470
10-25%..1.9261.926
26-50%0.21001.8281.927
51-75%..0.5560.556
76-100%..0.7480.748
total0.21005.876.07
ZH< 1%..1.3371.337
1-4%..4.5204.520
5-9%..6.1176.117
10-25%..8.2148.214
26-50%..10.81210.812
51-75%..8.0148.014
76-100%..10.61210.612
total..49.6249.62
Switzerland< 1%3.72238.0741.76
1-4%15.011112.64127.64
5-9%21.09163.13184.13
10-25%29.78321.62351.32
26-50%19.19225.03244.12
51-75%6.916121.64128.54
76-100%2.92594.4497.34
total98.241076.311174.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158676/145055

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes) %± %± %± %± %± %±
inside perimeter< 1%12.06.5..4.02.33.71.01.21.23.80.8
1-4%12.06.5..14.74.115.61.914.84.015.21.5
5-9%19.98.0..20.04.621.82.122.24.621.51.7
10-25%20.08.0..26.75.130.52.435.85.330.21.9
26-50%20.08.0100.0.20.04.619.92.116.24.119.51.7
51-75%12.06.5..8.03.16.11.28.63.17.01.1
76-100%4.03.9..6.72.92.40.81.21.22.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter< 1%5.70.73.10.53.10.53.30.42.40.63.50.2
1-4%6.90.87.20.710.70.913.40.814.21.310.50.4
5-9%11.01.010.70.914.11.019.20.921.51.515.20.5
10-25%27.91.423.51.232.51.432.01.135.01.729.90.6
26-50%20.31.223.21.224.01.319.40.916.41.320.90.5
51-75%13.21.017.31.110.00.98.20.77.50.911.30.4
76-100%14.91.115.01.05.70.74.60.53.00.68.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.
total< 1%5.90.73.10.53.10.53.40.42.30.53.60.2
1-4%7.00.87.20.711.00.913.80.714.31.210.90.4
5-9%11.21.010.70.914.41.019.60.921.51.415.70.4
10-25%27.71.323.51.232.11.331.71.035.11.629.90.6
26-50%20.31.223.31.223.81.219.50.916.41.320.80.5
51-75%13.21.017.31.19.80.97.80.67.60.910.90.4
76-100%14.71.115.01.05.70.74.20.42.80.68.20.3
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 #158677/145056

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter< 1%0.558..0.5582.4270.21003.722
1-4%0.558..2.03010.2132.12914.911
5-9%0.945..2.72614.2113.22321.09
10-25%0.945..3.62219.995.11829.68
26-50%0.9450.21002.72613.0112.32819.19
51-75%0.558..1.1414.0211.2386.916
76-100%0.2100..0.9451.6330.21002.825
total4.6200.210013.41165.4514.31198.04
outside perimeter< 1%11.3127.1166.31710.1133.42338.17
1-4%13.51116.61022.0940.8619.59112.54
5-9%21.7924.6828.8758.6529.57163.23
10-25%54.9554.0566.6597.7448.05321.32
26-50%40.0653.3549.3559.1522.58224.23
51-75%25.9839.8620.4925.0810.313121.34
76-100%29.4734.4711.71214.1114.12193.74
total196.61229.81205.21305.41137.221074.31
total< 1%11.8127.1166.81612.5123.52241.86
1-4%14.01116.61024.0851.1621.79127.44
5-9%22.6924.6831.5772.8432.67184.23
10-25%55.8554.0570.24117.6353.25350.82
26-50%40.9653.5552.0572.2524.88243.32
51-75%26.5839.8621.5929.0811.512128.24
76-100%29.6734.4712.51215.7104.22096.54
total201.21230.01218.61370.81151.621172.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158678/145057

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes) %± %± %± %± %± %± %±
inside perimeter< 1%11.56.31.71.27.22.82.21.35.42.21.21.23.80.8
1-4%11.56.312.43.016.94.113.12.920.73.814.84.015.21.5
5-9%19.27.719.03.618.14.228.53.918.13.722.24.621.41.7
10-25%19.27.734.74.322.94.630.63.928.84.335.85.330.31.9
26-50%23.18.318.23.520.54.421.23.519.83.816.24.119.51.7
51-75%11.56.35.82.112.03.63.61.66.32.38.63.17.01.1
76-100%3.83.88.32.52.41.70.70.70.90.91.21.22.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter< 1%4.30.43.00.53.90.82.70.73.10.72.40.63.50.2
1-4%7.10.59.90.912.51.311.81.416.01.414.21.310.50.4
5-9%10.90.614.31.116.41.421.01.819.21.521.51.515.20.5
10-25%25.50.935.01.527.11.734.42.131.41.735.01.729.90.6
26-50%21.90.922.61.321.81.620.21.819.31.516.41.320.90.5
51-75%15.40.79.40.910.61.28.01.27.21.07.50.911.30.4
76-100%15.00.75.70.77.61.01.90.63.80.73.00.68.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total< 1%4.40.42.90.54.30.72.60.63.40.62.30.53.60.2
1-4%7.10.510.20.913.01.212.11.316.71.314.31.210.90.4
5-9%10.90.614.81.116.61.422.51.619.01.421.51.415.70.4
10-25%25.40.934.91.426.71.633.61.931.01.635.11.629.90.6
26-50%21.90.822.11.221.71.520.41.619.31.416.41.320.70.5
51-75%15.40.79.00.810.71.17.11.07.10.97.60.910.90.4
76-100%14.80.76.00.77.10.91.70.53.40.62.80.68.20.3
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 #158679/145058

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter< 1%0.5580.4711.0410.5581.1410.21003.722
1-4%0.5582.7262.4273.1234.0212.12914.911
5-9%0.9454.2212.6266.7163.5223.22321.09
10-25%0.9457.6153.3237.2155.6175.11829.78
26-50%1.1414.0212.9244.9183.9212.32819.19
51-75%0.5581.3381.7310.9451.2381.2386.816
76-100%0.21001.8320.3710.21000.21000.21002.925
total4.72021.9914.41023.4819.4914.31198.04
outside perimeter< 1%18.4105.6184.5192.4273.9213.42338.17
1-4%30.1818.21014.41110.41219.8919.59112.54
5-9%46.3626.4819.0918.4923.6829.57163.13
10-25%108.8464.3531.3730.2738.7648.05321.32
26-50%93.4441.5625.2817.7923.8822.58224.13
51-75%65.8517.31012.2127.0158.91410.313121.54
76-100%63.8510.5138.8141.7314.7194.12193.64
total426.61183.82115.3287.93123.32137.221074.21
total< 1%18.9106.0175.5172.9244.9193.52241.86
1-4%30.6721.0916.81013.51123.8821.79127.44
5-9%47.2630.5721.5825.1827.1732.67184.13
10-25%109.7471.9434.6637.4644.3553.25351.02
26-50%94.4445.5628.1722.7827.6724.88243.22
51-75%66.3518.61013.9117.91410.11311.512128.34
76-100%64.0512.3129.2131.9304.9194.22096.44
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158680/145059

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover of regeneration (7 classes) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiondegree of cover of regeneration (7 classes) %± %± %±
Western Jura< 1%12.06.56.20.86.40.8
1-4%12.06.56.70.96.90.9
5-9%20.08.011.91.112.11.1
10-25%20.08.029.51.629.21.6
26-50%20.08.021.01.420.91.4
51-75%12.06.513.81.213.71.2
76-100%4.03.911.01.110.81.1
total100.0.100.0.100.0.
Eastern Jura< 1%..4.11.34.11.3
1-4%..7.41.77.41.7
5-9%..8.21.88.21.8
10-25%..22.62.722.62.7
26-50%..18.12.518.12.5
51-75%..11.12.011.12.0
76-100%..28.42.928.42.9
total..100.0.100.0.
Western Plateau< 1%..3.81.23.81.2
1-4%..7.21.67.21.6
5-9%..10.61.910.61.9
10-25%..26.42.726.42.7
26-50%..25.72.725.72.7
51-75%..17.02.317.02.3
76-100%..9.41.89.41.8
total..100.0.100.0.
Central Plateau< 1%..2.20.72.20.7
1-4%..6.51.26.51.2
5-9%..10.41.510.41.5
10-25%..26.02.225.92.2
26-50%100.0.25.22.125.42.1
51-75%..16.01.816.01.8
76-100%..13.61.713.51.7
total100.0.100.0.100.0.
Eastern Plateau< 1%..3.40.73.40.7
1-4%..7.71.17.71.1
5-9%..10.91.310.91.3
10-25%..20.61.620.61.6
26-50%..20.71.620.71.6
51-75%..18.31.618.31.6
76-100%..18.31.618.31.6
total..100.0.100.0.
Western Pre-Alps< 1%..3.61.23.21.1
1-4%19.37.811.32.112.12.1
5-9%15.47.114.02.314.12.2
10-25%26.88.727.53.027.42.8
26-50%27.08.728.83.028.62.9
51-75%7.75.210.82.110.51.9
76-100%3.93.84.11.34.01.3
total100.0.100.0.100.0.
Central Pre-Alps< 1%6.14.22.70.72.90.7
1-4%12.15.78.31.28.51.2
5-9%18.26.713.51.513.81.5
10-25%33.38.237.62.137.32.1
26-50%12.15.723.31.922.71.8
51-75%6.14.29.31.39.11.2
76-100%12.15.75.41.05.81.0
total100.0.100.0.100.0.
Eastern Pre-Alps< 1%6.36.13.20.93.30.9
1-4%12.58.313.61.713.61.7
5-9%31.311.614.91.815.51.8
10-25%12.58.328.72.328.12.2
26-50%25.010.822.32.122.42.0
51-75%12.58.310.41.510.51.5
76-100%..6.91.36.71.2
total100.0.100.0.100.0.
Northwestern Alps< 1%..3.31.12.70.9
1-4%9.73.811.91.911.51.7
5-9%21.05.216.32.217.12.0
10-25%38.76.236.12.936.62.6
26-50%17.74.916.22.216.52.0
51-75%4.82.78.71.78.01.5
76-100%8.13.57.61.67.71.4
total100.0.100.0.100.0.
Central Alps< 1%3.23.24.31.94.11.6
1-4%32.18.48.52.613.52.8
5-9%19.47.119.83.719.73.3
10-25%19.47.129.44.227.33.7
26-50%12.96.020.83.819.13.3
51-75%12.96.012.13.012.32.7
76-100%..5.12.04.11.6
total100.0.100.0.100.0.
Northeastern Alps< 1%11.15.25.61.96.71.9
1-4%5.53.812.62.811.22.4
5-9%11.35.318.23.216.82.8
10-25%30.57.721.13.423.03.2
26-50%24.97.221.63.422.33.1
51-75%11.15.29.12.49.52.2
76-100%5.53.811.82.710.62.3
total100.0.100.0.100.0.
Southwestern Alps< 1%2.21.32.70.72.60.6
1-4%13.12.911.81.412.11.3
5-9%28.53.921.01.822.51.6
10-25%30.63.934.42.133.61.9
26-50%21.23.520.21.820.41.6
51-75%3.61.68.01.27.11.0
76-100%0.70.71.90.61.70.5
total100.0.100.0.100.0.
Southeastern Alps< 1%5.42.23.10.73.40.6
1-4%20.73.816.01.416.71.3
5-9%18.13.719.21.519.01.4
10-25%28.84.331.41.731.01.6
26-50%19.83.819.31.519.31.4
51-75%6.32.37.21.07.10.9
76-100%0.90.93.80.73.40.6
total100.0.100.0.100.0.
Southern Alps< 1%1.21.22.40.62.30.5
1-4%14.84.014.21.314.31.2
5-9%22.24.621.51.521.51.4
10-25%35.85.335.01.735.11.6
26-50%16.24.116.41.316.41.3
51-75%8.63.17.50.97.60.9
76-100%1.21.23.00.62.80.6
total100.0.100.0.100.0.
Switzerland< 1%3.70.83.60.23.60.2
1-4%15.31.510.50.410.90.4
5-9%21.41.715.20.515.70.4
10-25%30.21.929.90.629.90.6
26-50%19.51.720.80.520.70.5
51-75%7.01.111.30.410.90.4
76-100%2.90.78.70.48.30.3
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158681/145060

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
grid: terrestrial grid NFI3
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%....1.1410.21000.21000.4711.832
21-40%....1.6331.4351.1410.9454.919
41-60%0.2100..3.4233.7213.0241.63311.912
61-80%0.750..8.4145.3187.2154.22025.88
over 80%3.822..25.7811.1125.1188.31453.96
total4.719..40.1621.6816.51015.41098.34
outside perimeter0-20%1.6332.5279.8131.5333.5222.82521.99
21-40%3.6223.22319.799.71311.4128.71456.35
41-60%10.7135.91737.5713.51124.5815.810107.84
61-80%23.5819.1969.1520.6827.5727.37187.23
over 80%150.92225.81173.2231.7634.7685.53701.81
total190.31256.61309.3177.03101.62140.121075.01
total0-20%1.6332.52710.9131.7323.7223.22423.69
21-40%3.6223.22321.3911.11212.4119.61361.25
41-60%10.8135.91740.9617.2927.5717.410119.74
61-80%24.3819.1977.4425.9734.7631.67213.03
over 80%154.72225.81198.9242.7539.8693.83755.71
total195.01256.61349.4198.72118.12155.521173.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158682/145061

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
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes) %± %± %±
AG0-20%..0.80.50.80.5
21-40%..1.90.81.90.8
41-60%..3.41.13.41.1
61-80%..5.71.45.71.4
over 80%..88.32.088.32.0
total..100.0.100.0.
AI0-20%......
21-40%..3.23.22.82.8
41-60%50.025.23.23.28.54.8
61-80%25.021.923.27.723.47.3
over 80%25.021.970.48.365.38.2
total100.0.100.0.100.0.
AR0-20%......
21-40%......
41-60%..4.43.14.33.0
61-80%..8.34.08.03.9
over 80%100.0.87.34.987.84.7
total100.0.100.0.100.0.
BE0-20%6.32.72.20.52.50.5
21-40%5.02.43.70.63.90.6
41-60%6.22.78.00.97.80.9
61-80%22.54.716.21.216.81.2
over 80%60.05.569.91.569.11.5
total100.0.100.0.100.0.
BL/BS0-20%......
21-40%......
41-60%......
61-80%..4.92.24.92.2
over 80%..95.12.295.12.2
total..100.0.100.0.
FR0-20%..4.51.44.31.3
21-40%..1.80.91.70.9
41-60%42.918.711.62.112.52.2
61-80%14.313.217.42.517.32.5
over 80%42.918.764.73.264.13.2
total100.0.100.0.100.0.
GE0-20%..9.49.49.49.4
21-40%......
41-60%..9.49.49.49.4
61-80%......
over 80%..81.112.581.112.5
total..100.0.100.0.
GL0-20%..1.41.41.11.1
21-40%4.34.38.83.47.72.8
41-60%13.47.215.74.415.13.7
61-80%21.78.621.44.921.44.3
over 80%60.710.252.76.054.75.2
total100.0.100.0.100.0.
GR0-20%0.70.73.10.62.70.5
21-40%5.21.910.61.19.90.9
41-60%15.73.120.31.419.61.3
61-80%41.04.327.31.529.21.4
over 80%37.34.238.71.738.51.5
total100.0.100.0.100.0.
JU0-20%......
21-40%..0.50.50.50.5
41-60%..2.71.22.71.2
61-80%40.021.916.42.717.02.7
over 80%60.021.980.32.979.82.9
total100.0.100.0.100.0.
LU0-20%..0.40.40.40.4
21-40%..2.51.02.51.0
41-60%..4.31.34.21.3
61-80%..17.32.517.12.4
over 80%100.0.75.52.875.82.8
total100.0.100.0.100.0.
NE0-20%..1.30.91.20.9
21-40%..1.30.91.20.9
41-60%..7.02.06.82.0
61-80%16.715.313.42.713.52.7
over 80%83.315.277.13.477.33.3
total100.0.100.0.100.0.
NW0-20%..2.72.62.22.1
21-40%12.511.89.15.19.84.7
41-60%..6.14.24.93.4
61-80%..15.26.312.25.2
over 80%87.511.466.98.370.97.1
total100.0.100.0.100.0.
OW0-20%..3.01.72.81.6
21-40%..9.12.98.32.7
41-60%22.213.917.23.817.63.7
61-80%11.110.527.34.525.94.2
over 80%66.715.843.55.045.44.8
total100.0.100.0.100.0.
SG0-20%..2.10.81.90.8
21-40%4.84.75.61.45.51.3
41-60%..7.31.56.81.4
61-80%14.37.616.02.215.92.1
over 80%81.08.569.12.769.92.6
total100.0.100.0.100.0.
SH0-20%......
21-40%......
41-60%......
61-80%..1.61.61.61.6
over 80%..98.41.698.41.6
total..100.0.100.0.
SO0-20%..0.50.50.50.5
21-40%..0.50.50.50.5
41-60%..3.21.33.21.3
61-80%..7.01.97.01.9
over 80%100.0.88.72.388.82.3
total100.0.100.0.100.0.
SZ0-20%12.111.45.11.85.51.8
21-40%..7.82.27.42.1
41-60%12.611.812.32.712.32.6
61-80%12.611.824.73.524.13.4
over 80%62.817.150.04.050.73.9
total100.0.100.0.100.0.
TG0-20%..1.71.21.71.2
21-40%..0.80.80.80.8
41-60%..2.41.32.41.3
61-80%..5.62.15.62.1
over 80%..89.52.789.52.7
total..100.0.100.0.
TI0-20%3.52.41.90.62.10.5
21-40%6.93.35.50.95.60.9
41-60%10.44.011.31.311.31.2
61-80%24.15.618.01.518.51.5
over 80%55.16.563.31.962.61.8
total100.0.100.0.100.0.
UR0-20%..2.81.92.11.5
21-40%4.34.35.72.85.42.4
41-60%4.34.318.64.715.13.7
61-80%39.110.218.54.723.74.4
over 80%52.210.454.36.053.85.2
total100.0.100.0.100.0.
VD0-20%..2.10.62.00.6
21-40%3.43.43.40.83.40.8
41-60%3.43.49.01.38.71.2
61-80%17.27.016.91.616.91.6
over 80%75.97.968.62.069.02.0
total100.0.100.0.100.0.
VS0-20%0.80.82.20.61.90.5
21-40%5.82.012.81.511.41.2
41-60%16.83.216.91.716.91.5
61-80%22.63.625.41.924.91.7
over 80%54.04.342.72.245.01.9
total100.0.100.0.100.0.
ZG0-20%..3.03.02.92.9
21-40%..3.03.02.92.9
41-60%..6.14.25.94.1
61-80%..12.15.711.85.6
over 80%100.0.75.87.676.57.4
total100.0.100.0.100.0.
ZH0-20%..1.10.61.10.6
21-40%..1.90.81.90.8
41-60%..1.10.61.10.6
61-80%..6.71.56.71.5
over 80%..89.11.989.11.9
total..100.0.100.0.
Switzerland0-20%1.80.62.00.22.00.2
21-40%5.00.95.20.35.20.3
41-60%12.11.410.00.410.20.4
61-80%26.31.917.40.518.10.5
over 80%54.82.165.40.664.50.6
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158683/145062

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
grid: terrestrial grid NFI3
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%..0.4710.471
21-40%..0.9440.944
41-60%..1.7331.733
61-80%..2.8252.825
over 80%..43.2343.23
total..49.0249.02
AI0-20%......
21-40%..0.21000.2100
41-60%0.3700.21000.556
61-80%0.21001.1361.333
over 80%0.21003.4153.514
total0.6484.8105.47
AR0-20%......
21-40%......
41-60%..0.4710.471
61-80%..0.7490.749
over 80%0.3706.987.27
total0.3707.968.26
BE0-20%0.9453.4234.320
21-40%0.7505.9176.616
41-60%0.94512.41213.311
61-80%3.22325.4828.67
over 80%8.514109.33117.83
total14.211156.42170.61
BL/BS0-20%......
21-40%......
41-60%......
61-80%..1.0441.044
over 80%..19.5419.54
total..20.5420.54
FR0-20%..1.8311.831
21-40%..0.7500.750
41-60%0.5584.7195.318
61-80%0.21007.1157.315
over 80%0.55826.5627.16
total1.33741.0342.23
GE0-20%..0.31000.3100
21-40%......
41-60%..0.31000.3100
61-80%......
over 80%..2.5212.521
total..3.1133.113
GL0-20%..0.21000.2100
21-40%0.21001.1411.237
41-60%0.5581.9292.426
61-80%0.9442.6243.421
over 80%2.4256.3148.711
total4.01912.0916.06
GR0-20%0.21004.6204.719
21-40%1.23815.81017.010
41-60%3.72230.2733.97
61-80%9.61340.7650.35
over 80%8.81457.7566.54
total23.58149.02172.41
JU0-20%......
21-40%..0.21000.2100
41-60%..0.9440.944
61-80%0.4715.3175.716
over 80%0.55726.1526.74
total0.94432.5333.43
LU0-20%..0.21000.2100
21-40%..1.0411.041
41-60%..1.7311.731
61-80%..7.0157.015
over 80%0.55830.5531.05
total0.55840.4340.93
NE0-20%..0.4710.471
21-40%..0.4710.471
41-60%..2.0302.030
61-80%0.21003.8213.920
over 80%0.94421.7522.65
total1.14028.2329.23
NW0-20%..0.21000.2100
21-40%0.21000.6560.848
41-60%..0.4700.470
61-80%..1.0431.043
over 80%1.4354.3165.712
total1.6326.5108.06
OW0-20%..0.5580.558
21-40%..1.6321.632
41-60%0.4703.1233.421
61-80%0.21004.9175.017
over 80%1.1407.7128.811
total1.63217.8519.44
SG0-20%..1.1411.141
21-40%0.21002.8253.024
41-60%..3.7213.721
61-80%0.5588.1148.613
over 80%3.02434.8537.85
total3.72150.4354.13
SH0-20%......
21-40%......
41-60%......
61-80%..0.21000.2100
over 80%..12.2412.24
total..12.4412.44
SO0-20%..0.21000.2100
21-40%..0.21000.2100
41-60%..1.0401.040
61-80%..2.3272.327
over 80%0.210028.9429.14
total0.210032.6332.83
SZ0-20%0.21001.4351.633
21-40%..2.2282.228
41-60%0.21003.5223.721
61-80%0.21007.0147.114
over 80%0.94414.1915.08
total1.53528.1429.64
TG0-20%..0.4710.471
21-40%..0.21000.2100
41-60%..0.5570.557
61-80%..1.2371.237
over 80%..19.1419.14
total..21.3421.34
TI0-20%0.4712.2292.527
21-40%0.7506.1176.816
41-60%1.14112.71113.711
61-80%2.52720.1922.68
over 80%5.71770.6476.33
total10.313111.72121.92
UR0-20%..0.4710.471
21-40%0.21000.7490.944
41-60%0.21002.4272.625
61-80%1.7322.4274.120
over 80%2.2287.1149.312
total4.31913.1917.46
VD0-20%..2.0302.030
21-40%0.21003.3233.423
41-60%0.21008.5148.714
61-80%0.94515.91016.910
over 80%4.02164.7368.73
total5.31894.4299.72
VS0-20%0.21001.9302.129
21-40%1.43511.31212.611
41-60%3.92114.91018.89
61-80%5.31822.4827.77
over 80%12.61137.5650.15
total23.4887.93111.32
ZG0-20%..0.21000.2100
21-40%..0.21000.2100
41-60%..0.4700.470
61-80%..0.7480.748
over 80%0.21004.4134.612
total0.21005.876.07
ZH0-20%..0.6580.658
21-40%..0.9440.944
41-60%..0.6580.658
61-80%..3.3233.323
over 80%..44.2344.23
total..49.6249.62
Switzerland0-20%1.83222.0923.89
21-40%4.91956.1561.15
41-60%11.912107.84119.74
61-80%25.88186.93212.73
over 80%53.96703.41757.31
total98.241076.311174.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #158684/145063

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
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %±
inside perimeter0-20%....2.71.91.60.72.51.81.80.6
21-40%....4.02.35.31.26.22.75.00.9
41-60%3.93.8..13.33.913.01.710.03.412.21.4
61-80%16.07.3..17.34.428.12.329.65.126.21.9
over 80%80.18.0100.0.62.75.652.02.651.75.554.82.1
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.70.31.10.32.20.43.50.42.10.52.00.2
21-40%1.70.41.40.33.60.511.20.86.00.85.20.3
41-60%5.00.72.70.59.60.918.50.911.11.110.00.4
61-80%11.71.07.20.720.71.225.81.018.91.417.40.5
over 80%80.91.287.60.963.91.441.01.262.01.765.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%0.70.31.10.32.20.43.10.42.10.52.00.2
21-40%1.60.41.40.33.60.510.10.76.00.85.20.3
41-60%5.00.72.70.59.80.917.50.811.01.110.20.4
61-80%11.81.07.20.720.51.226.21.019.91.418.10.5
over 80%80.91.287.60.963.91.442.91.161.01.764.50.6
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 #158685/145064

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
grid: terrestrial grid NFI3
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%....0.4711.1410.4711.832
21-40%....0.5583.5220.9454.919
41-60%0.2100..1.8328.5141.43511.912
61-80%0.750..2.32818.4104.22025.78
over 80%3.7220.21008.41434.077.41553.76
total4.6200.210013.41165.4514.31198.04
outside perimeter0-20%1.4352.5274.52010.5132.82521.89
21-40%3.3233.2237.31534.278.21456.25
41-60%9.8136.21719.7956.6515.210107.64
61-80%23.0816.61042.5678.9425.98186.93
over 80%159.12201.31131.23125.2385.03701.91
total196.61229.81205.21305.41137.221074.31
total0-20%1.4352.5274.81911.6123.22423.69
21-40%3.3233.2237.91537.679.11461.15
41-60%10.0136.21721.5965.1516.710119.54
61-80%23.7816.61044.8697.3430.27212.63
over 80%162.82201.51139.62159.2392.53755.51
total201.21230.01218.61370.81151.621172.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158686/145065

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
grid: terrestrial grid NFI3
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%..4.11.81.21.20.80.80.90.92.51.81.80.6
21-40%..5.02.03.62.05.82.05.42.16.22.75.00.9
41-60%3.83.78.32.58.53.116.83.217.13.610.03.412.11.4
61-80%15.47.119.83.622.94.622.63.640.54.729.65.126.31.9
over 80%80.87.762.84.463.85.354.04.336.04.651.75.554.82.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%0.90.23.30.62.70.62.20.63.10.72.10.52.00.2
21-40%1.50.35.00.76.30.912.81.511.21.26.00.85.20.3
41-60%3.80.411.91.010.61.216.91.722.41.611.11.110.00.4
61-80%9.20.622.51.319.91.625.41.928.21.718.91.417.40.5
over 80%84.50.757.31.660.61.942.72.235.11.862.01.765.30.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%0.90.23.40.52.60.61.90.52.80.62.10.52.00.2
21-40%1.50.25.00.66.00.911.41.210.41.16.00.85.20.3
41-60%3.80.411.50.910.41.116.91.521.71.411.01.110.20.4
61-80%9.30.622.21.220.21.524.91.729.91.619.91.418.10.5
over 80%84.50.757.91.560.91.845.01.935.21.761.01.764.40.6
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 #158687/145066

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern 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%..0.9450.21000.21000.21000.4711.832
21-40%..1.1410.5581.4351.1410.9454.919
41-60%0.21001.8321.2383.9213.3231.43511.912
61-80%0.7504.3203.3235.3187.9154.22025.78
over 80%3.82213.7119.21312.6117.0157.41553.76
total4.72021.9914.41023.4819.4914.31198.04
outside perimeter0-20%3.9216.1173.1231.9303.9212.82521.89
21-40%6.5179.2147.21511.31213.8118.21456.25
41-60%16.01021.8912.21214.91027.6715.210107.84
61-80%39.5641.4622.9822.4834.8625.98186.93
over 80%360.71105.3369.8437.5643.2685.03701.61
total426.61183.82115.3287.93123.32137.221074.21
total0-20%3.9217.0163.3232.1294.1213.22423.69
21-40%6.51710.3137.71512.61114.8109.11461.15
41-60%16.21023.6813.41118.8931.0716.710119.74
61-80%40.2645.7626.2727.7742.7630.27212.63
over 80%364.41119.0379.0350.1550.2592.53755.31
total431.21205.71129.72111.32142.82151.621172.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158688/145067

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes) %± %± %±
Western Jura0-20%..0.80.30.80.3
21-40%..1.90.51.90.5
41-60%4.03.96.10.86.00.8
61-80%16.07.314.11.214.21.2
over 80%80.08.077.01.577.11.4
total100.0.100.0.100.0.
Eastern Jura0-20%..0.40.40.40.4
21-40%..0.80.60.80.6
41-60%..1.20.71.20.7
61-80%..3.31.13.31.1
over 80%..94.21.594.21.5
total..100.0.100.0.
Western Plateau0-20%..1.90.81.90.8
21-40%..1.50.81.50.8
41-60%..5.71.45.71.4
61-80%..8.71.78.71.7
over 80%..82.32.382.32.3
total..100.0.100.0.
Central Plateau0-20%..0.70.40.70.4
21-40%..1.20.51.20.5
41-60%..1.90.71.90.7
61-80%..8.31.48.21.4
over 80%100.0.87.81.687.91.6
total100.0.100.0.100.0.
Eastern Plateau0-20%..1.00.41.00.4
21-40%..1.50.51.50.5
41-60%..2.00.62.00.6
61-80%..5.91.05.91.0
over 80%..89.71.289.71.2
total..100.0.100.0.
Western Pre-Alps0-20%7.75.24.51.44.81.4
21-40%3.93.82.71.12.81.1
41-60%15.47.116.22.516.12.3
61-80%19.37.822.52.822.22.6
over 80%53.89.854.13.354.13.2
total100.0.100.0.100.0.
Central Pre-Alps0-20%..1.30.51.30.5
21-40%6.14.24.00.94.20.9
41-60%12.15.78.11.28.31.2
61-80%18.26.721.21.821.01.7
over 80%63.68.465.32.165.22.0
total100.0.100.0.100.0.
Eastern Pre-Alps0-20%..2.00.71.90.7
21-40%..3.50.93.30.9
41-60%12.58.37.91.38.11.3
61-80%12.58.319.12.018.81.9
over 80%75.010.867.52.367.82.3
total100.0.100.0.100.0.
Northwestern Alps0-20%4.82.76.11.45.91.3
21-40%4.82.78.71.78.01.5
41-60%3.22.215.52.213.31.8
61-80%21.05.224.92.624.22.3
over 80%66.16.044.83.048.72.7
total100.0.100.0.100.0.
Central Alps0-20%3.02.94.11.83.91.6
21-40%3.23.211.22.99.52.4
41-60%6.54.413.03.111.62.7
61-80%32.38.420.63.823.13.5
over 80%55.09.051.04.751.84.1
total100.0.100.0.100.0.
Northeastern Alps0-20%..3.51.62.81.2
21-40%5.53.89.92.59.02.1
41-60%8.54.715.53.014.12.6
61-80%19.46.621.63.421.23.1
over 80%66.57.949.54.252.93.7
total100.0.100.0.100.0.
Southwestern Alps0-20%0.80.82.20.61.90.5
21-40%5.82.012.81.511.41.2
41-60%16.83.216.91.716.91.5
61-80%22.63.625.41.924.91.7
over 80%54.04.342.72.245.01.9
total100.0.100.0.100.0.
Southeastern Alps0-20%0.90.93.10.72.80.6
21-40%5.42.111.21.210.41.1
41-60%17.13.622.41.621.71.4
61-80%40.54.728.21.729.91.6
over 80%36.04.635.11.835.21.7
total100.0.100.0.100.0.
Southern Alps0-20%2.51.82.10.52.10.5
21-40%6.22.76.00.86.00.8
41-60%10.03.411.11.111.01.1
61-80%29.65.118.91.419.91.4
over 80%51.75.562.01.761.01.7
total100.0.100.0.100.0.
Switzerland0-20%1.80.62.00.22.00.2
21-40%5.00.95.20.35.20.3
41-60%12.11.410.00.410.20.4
61-80%26.31.917.40.518.10.5
over 80%54.82.165.30.664.40.6
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158689/145068

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %
Western Jura0-20%..1.3381.338
21-40%..2.9252.925
41-60%0.21009.1149.314
61-80%0.75021.1921.88
over 80%3.622115.22118.72
total4.520149.51154.01
Eastern Jura0-20%..0.21000.2100
21-40%..0.4710.471
41-60%..0.6580.658
61-80%..1.6351.635
over 80%..44.5344.53
total..47.2247.22
Western Plateau0-20%..0.9450.945
21-40%..0.7500.750
41-60%..2.8252.825
61-80%..4.3204.320
over 80%..40.7440.74
total..49.4349.43
Central Plateau0-20%..0.5580.558
21-40%..0.9450.945
41-60%..1.3351.335
61-80%..5.7175.717
over 80%0.210061.0361.23
total0.210069.5269.62
Eastern Plateau0-20%..1.1411.141
21-40%..1.6331.633
41-60%..2.2292.229
61-80%..6.5166.516
over 80%..99.5299.52
total..110.91110.91
Western Pre-Alps0-20%0.4711.8312.228
21-40%0.21001.1401.337
41-60%0.7506.6167.315
61-80%0.9449.21310.112
over 80%2.62622.0724.66
total4.81940.7345.53
Central Pre-Alps0-20%..1.3381.338
21-40%0.4713.8224.121
41-60%0.7507.5158.314
61-80%1.14119.8920.98
over 80%3.82160.9464.74
total5.91793.3299.22
Eastern Pre-Alps0-20%..1.4351.435
21-40%..2.5262.526
41-60%0.4715.6176.017
61-80%0.47113.51113.910
over 80%2.12948.0450.14
total2.82571.1273.92
Northwestern Alps0-20%0.5583.0243.622
21-40%0.5584.3204.919
41-60%0.4717.7158.114
61-80%2.32712.41114.810
over 80%7.41522.3829.76
total11.21249.8461.03
Central Alps0-20%0.21000.9451.141
21-40%0.21002.4272.626
41-60%0.4712.8253.223
61-80%1.9314.5196.416
over 80%3.22311.11114.39
total5.81721.8727.65
Northeastern Alps0-20%..0.9450.945
21-40%0.3712.4262.724
41-60%0.5583.8214.319
61-80%1.2375.3176.515
over 80%4.11912.01016.18
total6.11624.3630.44
Southwestern Alps0-20%0.21001.9302.129
21-40%1.43511.31212.611
41-60%3.92114.91018.89
61-80%5.31822.4827.77
over 80%12.61137.5650.15
total23.4887.93111.32
Southeastern Alps0-20%0.21003.9214.121
21-40%1.14113.81114.810
41-60%3.32327.6731.07
61-80%7.91534.8642.76
over 80%7.01543.2650.25
total19.49123.32142.82
Southern Alps0-20%0.4712.8253.224
21-40%0.9458.2149.114
41-60%1.43515.21016.710
61-80%4.22025.9830.27
over 80%7.41585.0392.53
total14.311137.22151.62
Switzerland0-20%1.83221.9923.79
21-40%4.91956.2561.15
41-60%11.912107.94119.84
61-80%25.98187.03212.93
over 80%53.96703.01756.91
total98.441076.011174.41

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158690/145069

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system %± %± %± %± %± %± %±
inside perimeterroad and skidding track50.19.8..11.62.110.22.79.63.05.72.511.91.4
road and skidding road7.75.2..5.81.61.61.15.42.35.72.54.90.9
road and cable line15.47.1..55.13.347.24.461.75.032.25.049.02.1
road and flight path3.93.8..12.02.225.23.910.63.214.93.814.71.5
no access intended23.08.2..15.62.415.83.212.83.441.45.319.51.7
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterroad and skidding track60.21.575.11.128.91.120.41.915.91.511.91.241.40.6
road and skidding road30.41.420.81.116.40.94.91.09.31.24.10.716.80.5
road and cable line3.10.52.20.434.41.126.32.142.12.120.41.419.50.5
road and flight path0.60.2..9.30.721.91.98.31.16.70.96.00.3
no access intended5.70.71.80.410.90.726.52.124.41.856.91.816.20.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalroad and skidding track60.01.575.11.126.91.018.21.615.01.411.31.139.00.5
road and skidding road29.81.420.81.115.20.84.10.88.81.14.30.715.80.4
road and cable line3.40.62.20.436.81.130.91.944.81.921.51.422.00.5
road and flight path0.60.2..9.70.722.61.78.61.17.50.96.70.3
no access intended6.10.71.80.411.40.724.21.822.81.655.31.716.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158691/145070

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · concept of transportation system · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedconcept of transportation system1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterroad and skidding track2.428..4.6202.2281.6330.94511.712
road and skidding road0.471..2.3280.3710.9450.9454.819
road and cable line0.750..22.1910.21210.2135.01948.26
road and flight path0.2100..4.8195.4171.8312.32814.511
no access intended1.141..6.2173.4222.1296.41619.29
total4.719..40.1621.6816.51015.41098.34
outside perimeterroad and skidding track114.63192.8289.5415.71016.11016.710445.51
road and skidding road57.8553.5550.863.7219.5135.817181.13
road and cable line6.0175.718106.4420.3842.8528.57209.73
road and flight path1.141..28.9816.998.4149.41364.65
no access intended10.9134.61933.7720.4824.8879.74174.13
total190.31256.61309.3177.03101.62140.121075.01
totalroad and skidding track117.03192.8294.2417.9917.7917.610457.21
road and skidding road58.1553.5553.154.12010.4136.716185.83
road and cable line6.7165.718128.5330.5753.0533.57257.92
road and flight path1.338..33.7722.3810.21311.61279.14
no access intended12.0124.61939.9623.9826.9786.13193.33
total195.01256.61349.4198.72118.12155.521173.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #158692/145071
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