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NFI4
forest area
avalanches SilvaProtect · main type of harvest
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/askidder92.93112.9351.9635.274.022296.92
forwarder59.1585.549.61410.6143.026167.83
mobile tower yarder5.2195.31918.51025.292.32956.66
cable crane1.0451.0459.61422.392.92636.87
helicopter0.6580.65814.71148.5618.11082.65
others1.7330.5580.8500.8501.6355.519
total160.62205.81105.13142.5332.07646.01
inside perimeterskidder2.4290.0.2.6289.9140.65715.511
forwarder0.9500.0.0.21000.6580.0.1.635
mobile tower yarder1.0450.0.3.72316.9111.73523.39
cable crane0.0.0.0.3.02514.6112.92620.510
helicopter0.21000.0.3.22522.898.11534.37
others0.21000.0.0.0.0.21000.21000.658
total4.7200.0.12.71264.9513.41195.84
outside perimeterskidder18.71012.91243.0632.089.314115.94
forwarder6.5174.9205.3195.7183.72326.19
mobile tower yarder4.3211.24125.4845.6612.71289.24
cable crane0.8500.210015.91135.5713.51265.85
helicopter0.6580.6587.31643.8662.95115.24
others1.0450.21000.21000.8502.4294.621
total31.8719.91097.24163.43104.53416.82
totalskidder114.03125.8397.6477.0513.911428.32
forwarder66.4590.4415.11116.9116.717195.53
mobile tower yarder10.6136.51747.6687.7416.710169.13
cable crane1.8331.24128.5872.4519.39123.14
helicopter1.4381.24125.28115.1489.13232.02
others2.9260.8501.0451.8334.22210.714
total197.11225.71215.11370.81150.021158.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #862946/329277
NFI3
forest area
avalanches SilvaProtect · main type of harvest
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/askidder123.83145.8262.9545.966.817385.32
forwarder32.6755.655.3196.1182.230101.84
mobile tower yarder1.8332.23011.91318.3101.04535.17
cable crane0.6581.24112.41226.883.72344.77
helicopter1.2410.47111.81344.0618.11075.65
others0.6580.6580.8501.4380.21003.524
total160.62205.81105.13142.5332.07646.01
inside perimeterskidder3.1250.0.3.22510.4141.53518.310
forwarder0.6580.0.0.4710.21000.21001.438
mobile tower yarder0.4710.0.2.72716.2111.04520.210
cable crane0.21000.0.4.02219.3104.12127.58
helicopter0.4710.0.2.32918.2106.61727.68
others0.0.0.0.0.21000.6580.0.0.850
total4.7200.0.12.71264.9513.41195.84
outside perimeterskidder22.8916.01152.6539.3712.812143.53
forwarder4.1222.7273.7243.6243.02617.111
mobile tower yarder2.4290.85017.81033.976.61761.45
cable crane1.4380.210015.51144.6623.0984.75
helicopter0.21000.21006.91739.3758.05104.54
others1.0450.0.0.8502.8271.0455.619
total31.8719.91097.24163.43104.53416.82
totalskidder149.72161.82118.7395.7421.29547.11
forwarder37.3758.359.3149.9145.419120.34
mobile tower yarder4.5212.92632.3768.358.615116.74
cable crane2.2301.43831.8790.6430.87156.83
helicopter1.8330.65821.09101.5482.74207.73
others1.6350.6581.8334.7201.2419.914
total197.11225.71215.11370.81150.021158.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #862947/329278
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.42.617.07.030.37.332.51.645.55.245.13.562.518.214.04.211.61.238.33.747.63.563.64.29.75.723.64.624.52.860.46.154.63.923.03.867.24.24.00.916.04.442.22.36.51.137.79.271.32.931.80.6
11-20 years ago10.32.04.14.117.66.07.70.915.33.98.82.025.016.25.92.96.50.99.52.314.12.512.12.825.78.25.02.27.01.724.85.519.63.16.52.211.43.11.50.65.02.815.31.72.70.77.65.415.52.38.90.4
21-30 years ago3.81.216.47.313.95.55.20.810.83.23.51.30.0.6.62.85.10.812.62.610.32.29.12.63.63.55.62.33.01.18.43.610.92.65.42.09.22.91.40.50.0.7.01.22.50.74.34.36.41.65.50.3
31-40 years ago3.01.14.14.10.0.2.60.52.21.61.10.80.0.4.42.52.50.63.51.45.31.60.0.0.0.4.72.31.20.70.0.2.11.24.81.90.0.0.80.44.22.45.41.11.20.50.0.2.51.02.40.2
41-50 years ago1.30.70.0.0.0.0.50.23.92.22.11.10.0.2.92.11.30.41.20.81.00.70.0.0.0.2.41.70.80.61.91.91.91.14.01.80.0.1.40.52.82.02.20.72.30.70.0.0.90.61.40.2
over 50 years ago1.30.74.03.93.23.23.30.62.61.94.61.512.512.41.61.610.51.10.0.2.81.21.01.09.75.78.83.04.71.41.51.51.30.99.12.50.0.7.31.29.23.64.71.09.61.34.34.30.0.5.30.3
total100.0.45.59.965.07.051.81.880.34.265.33.2100.0.35.55.837.51.865.13.781.12.885.82.948.79.150.15.441.23.296.92.190.32.452.84.587.83.116.31.637.25.976.92.024.81.954.08.996.61.255.30.6
inside perimeterless than 10 years ago0.0.0.0.0.0.3.10.60.0.1.70.80.0.10.83.73.30.70.60.60.50.52.51.49.95.65.12.33.11.20.0.0.0.2.21.30.0.0.60.48.93.51.40.65.71.03.33.30.0.2.40.2
11-20 years ago0.0.4.14.11.91.92.10.50.0.0.0.0.0.1.31.33.20.60.50.50.0.1.30.92.42.40.0.1.60.80.0.0.0.0.90.90.0.0.60.35.62.81.80.62.90.70.0.0.0.1.50.2
21-30 years ago0.0.0.0.0.0.0.90.30.0.0.50.50.0.2.92.11.90.51.00.70.60.60.0.0.0.0.0.0.90.60.0.0.0.0.70.70.0.0.40.30.0.1.10.52.20.60.0.0.0.0.90.1
31-40 years ago0.0.7.05.00.0.0.60.30.0.0.40.40.0.4.32.51.70.50.60.60.50.50.0.0.0.0.80.81.90.90.0.0.0.0.90.90.0.1.00.54.52.60.20.22.20.70.0.0.0.1.00.1
41-50 years ago0.0.0.0.0.0.0.60.30.0.0.0.0.0.2.92.10.50.30.0.0.0.0.0.0.0.1.21.20.50.50.0.0.0.0.0.0.0.1.20.53.02.10.40.32.50.70.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.0.60.30.0.0.0.0.0.5.62.83.80.70.0.0.0.0.0.3.63.52.11.51.00.70.0.0.60.60.80.80.0.4.20.94.92.80.70.47.71.20.0.0.0.2.10.2
total0.0.11.16.31.91.97.90.90.0.2.61.00.0.27.85.414.31.32.81.21.60.93.81.715.96.99.23.08.91.90.0.0.60.65.42.00.0.8.01.226.95.55.71.123.11.83.33.30.0.8.50.4
outside perimeterless than 10 years ago0.0.23.48.419.46.220.31.410.23.314.52.50.0.13.44.212.31.216.82.98.32.07.02.117.36.721.94.422.52.73.12.15.01.820.43.66.42.28.21.215.74.67.91.310.01.336.19.22.61.012.10.4
11-20 years ago0.0.8.94.56.33.57.20.92.21.64.21.40.0.8.23.210.51.14.21.63.51.32.11.39.75.75.72.511.12.00.0.0.0.7.72.44.72.14.61.09.43.63.70.97.21.23.33.30.0.5.70.3
21-30 years ago0.0.4.03.95.63.14.90.85.12.24.41.40.0.7.33.26.00.95.31.73.01.20.0.3.63.50.0.6.11.50.0.1.30.95.82.21.11.15.01.00.0.1.30.54.10.93.33.30.50.53.80.3
31-40 years ago0.0.3.03.00.0.2.70.61.31.34.11.30.0.0.0.3.50.72.41.21.00.70.0.0.0.2.11.53.31.10.0.0.50.52.11.20.0.4.91.04.52.61.30.54.10.90.0.0.0.2.50.2
41-50 years ago0.0.0.0.1.91.92.10.51.01.02.61.00.0.3.92.22.50.60.60.60.60.60.0.0.0.1.41.41.80.90.0.1.61.12.91.40.0.6.61.10.0.0.40.36.91.10.0.0.30.32.40.2
over 50 years ago0.0.4.14.10.0.3.10.60.0.2.31.20.0.3.92.213.41.32.91.31.00.71.20.94.83.39.73.25.01.40.0.0.80.83.01.50.0.46.32.36.23.12.70.820.01.80.0.0.0.9.70.4
total0.0.43.39.933.17.040.31.719.74.232.13.20.0.36.75.848.21.832.13.617.32.710.42.535.48.640.75.349.83.23.12.19.12.441.84.412.23.175.71.935.96.017.41.852.12.242.79.13.41.236.20.6
totalless than 10 years ago80.42.640.49.849.87.955.91.755.75.261.33.562.518.238.25.927.21.655.73.756.43.573.13.936.98.850.65.450.13.263.56.159.63.945.54.573.64.012.81.540.76.251.62.422.11.977.18.273.92.846.30.6
11-20 years ago10.32.017.17.225.76.816.91.317.54.113.02.425.016.215.34.320.11.514.22.717.62.715.53.137.89.110.73.219.82.624.85.519.63.115.03.216.23.56.71.120.05.120.81.912.81.510.96.115.52.316.10.5
21-30 years ago3.81.220.48.019.56.111.01.115.83.78.42.00.0.16.84.413.01.218.93.013.92.59.12.67.14.85.62.39.91.98.43.612.22.711.92.910.33.06.81.20.0.9.41.48.71.37.65.46.91.710.20.4
31-40 years ago3.01.114.16.80.0.5.90.83.52.05.61.60.0.8.73.57.71.06.51.96.71.80.0.0.0.7.62.86.31.60.0.2.61.37.82.40.0.6.71.113.24.16.91.27.51.20.0.2.51.05.90.3
41-50 years ago1.30.70.0.1.91.93.20.64.82.44.81.50.0.9.83.64.40.81.81.01.60.90.0.0.0.4.92.43.11.21.91.93.41.56.92.20.0.9.21.35.92.93.10.811.61.40.0.1.30.74.50.3
over 50 years ago1.30.78.15.53.23.27.10.92.61.96.91.912.512.411.13.827.61.72.91.33.81.42.31.318.17.120.64.310.82.01.51.52.61.312.93.00.0.57.82.220.25.18.11.337.32.24.34.30.0.17.00.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862948/329279
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.72.516.36.830.37.331.61.645.85.043.83.463.216.112.63.811.11.138.83.747.03.462.54.18.55.024.54.524.02.660.46.154.33.921.23.568.04.13.30.716.54.040.92.27.41.135.28.971.32.930.10.5
11-20 years ago10.12.03.93.917.66.07.80.915.63.810.02.126.314.57.63.06.90.99.32.213.82.413.12.922.57.54.72.16.41.524.85.519.23.19.32.511.23.02.60.75.32.616.11.72.90.711.26.215.72.39.00.4
21-30 years ago3.81.215.77.113.95.55.10.810.33.13.91.40.0.6.02.56.20.812.32.510.02.18.92.56.44.55.42.23.91.28.43.611.22.64.81.88.92.83.10.72.81.97.71.24.50.96.64.86.31.66.00.3
31-40 years ago3.01.13.93.90.0.2.70.52.11.51.10.80.0.4.02.33.30.63.51.45.61.70.70.70.0.4.52.21.50.70.0.2.71.34.31.70.0.1.60.53.41.95.81.12.30.60.0.2.51.02.80.2
41-50 years ago1.30.70.0.0.0.0.70.33.72.12.11.00.0.2.71.91.60.41.20.81.00.70.0.0.0.3.31.90.70.51.91.91.81.13.61.60.0.1.50.52.31.62.50.72.90.70.0.0.90.61.60.2
over 50 years ago1.20.77.75.03.23.25.00.72.51.84.41.510.510.56.42.711.71.10.60.63.71.41.01.014.26.29.43.05.51.41.51.51.30.910.32.50.0.9.01.112.83.75.21.010.21.34.14.00.0.6.40.3
total100.0.47.69.765.07.052.91.779.94.165.23.1100.0.39.35.640.71.765.73.681.12.886.22.851.78.551.85.242.03.096.92.190.52.453.54.288.13.021.11.643.15.578.21.930.11.957.18.496.71.256.00.6
inside perimeterless than 10 years ago0.0.0.0.0.0.3.00.60.0.1.60.80.0.9.83.32.70.60.60.60.50.52.41.48.75.04.92.22.81.10.0.0.0.2.01.10.0.0.50.37.22.91.30.55.00.93.13.10.0.2.20.2
11-20 years ago0.0.3.93.91.91.92.10.50.0.0.0.0.0.1.21.22.90.60.50.50.0.1.30.92.12.10.0.1.50.70.0.0.0.0.80.80.0.0.60.34.62.31.80.62.70.70.0.0.0.1.50.2
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.50.50.0.2.71.91.80.51.00.70.60.60.0.0.0.0.0.0.80.60.0.0.0.0.60.60.0.0.60.30.0.1.00.42.40.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.60.30.0.0.40.40.0.3.92.21.50.40.60.60.50.50.0.0.0.0.70.71.70.90.0.0.0.0.80.80.0.1.20.44.92.40.20.21.90.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.60.30.0.0.0.0.0.2.71.90.40.20.0.0.0.0.0.0.0.1.11.10.50.50.0.0.0.0.80.80.0.1.10.42.51.70.40.32.20.60.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.6.22.83.90.70.0.0.0.0.0.3.13.12.01.50.90.60.0.0.60.60.70.70.0.3.80.84.02.30.60.46.71.00.0.0.0.2.00.2
total0.0.10.76.11.91.97.80.90.0.2.51.00.0.26.45.013.31.12.71.21.50.93.71.614.06.18.72.98.21.70.0.0.60.65.51.90.0.7.91.123.24.75.41.020.81.63.13.10.0.8.20.3
outside perimeterless than 10 years ago0.0.22.58.119.46.219.71.411.03.314.02.40.0.12.13.811.51.116.52.98.12.06.82.018.46.621.54.321.02.53.12.14.91.720.33.46.22.28.01.113.93.97.31.29.01.233.78.72.51.011.60.4
11-20 years ago0.0.8.54.46.33.57.20.92.11.54.01.30.0.8.63.19.31.04.11.53.41.32.11.28.55.05.52.410.91.90.0.0.0.6.92.14.62.15.10.97.73.03.60.96.61.03.13.10.0.5.60.3
21-30 years ago0.0.3.93.75.63.14.70.74.92.14.71.50.0.6.62.96.30.85.21.72.91.20.0.3.13.10.0.6.11.40.0.1.30.95.21.91.11.16.01.00.0.1.40.54.60.93.13.10.50.54.00.3
31-40 years ago0.0.2.82.80.0.2.60.51.21.23.91.30.0.0.0.3.00.62.31.20.90.70.0.0.0.2.01.53.41.10.0.0.50.51.91.10.0.4.80.95.82.61.20.54.10.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.20.50.90.92.51.00.0.3.52.02.40.50.60.60.60.60.0.0.0.1.31.31.60.80.0.1.51.13.31.40.0.5.91.01.21.20.40.36.21.00.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.10.60.0.3.21.30.0.3.52.013.61.22.81.31.40.81.20.94.32.99.23.06.71.60.0.0.80.83.41.50.0.41.12.05.02.52.50.718.61.60.0.0.0.9.80.4
total0.0.41.79.633.17.039.41.720.14.132.33.10.0.34.45.446.11.731.53.517.42.710.12.434.48.039.55.149.83.13.12.18.92.340.94.211.93.071.01.833.75.416.41.749.02.139.98.63.31.235.80.6
totalless than 10 years ago80.72.538.89.649.87.954.31.756.75.159.43.463.216.134.55.525.41.555.93.755.63.571.83.935.78.350.95.247.83.163.56.159.23.943.54.274.23.911.81.337.65.549.42.321.41.772.08.573.82.843.90.6
11-20 years ago10.12.016.46.925.76.817.11.317.74.014.02.426.314.517.44.219.01.314.02.717.22.716.53.233.28.410.23.118.92.424.85.519.23.116.93.215.83.48.31.117.64.421.51.912.21.414.26.815.72.316.10.5
21-30 years ago3.81.219.67.819.56.110.61.115.13.69.02.00.0.15.24.014.31.218.53.013.52.48.92.59.55.35.42.210.71.98.43.612.52.710.62.610.02.99.71.22.81.910.11.411.51.39.75.76.81.610.90.4
31-40 years ago3.01.113.66.60.0.5.80.83.31.95.41.50.0.7.93.17.70.96.41.97.01.80.70.70.0.7.22.76.61.60.0.3.21.47.02.20.0.7.61.114.23.87.21.28.31.20.0.2.51.06.20.3
41-50 years ago1.30.70.0.1.91.93.40.64.62.34.61.40.0.8.93.24.40.71.81.01.50.90.0.0.0.5.72.52.81.11.91.93.41.57.62.20.0.8.51.16.02.63.30.811.21.30.0.1.20.74.60.3
over 50 years ago1.20.711.66.23.23.28.81.02.51.87.61.910.510.516.14.229.11.53.51.45.11.62.21.321.67.120.64.213.12.11.51.52.61.314.42.90.0.54.02.021.84.78.31.335.42.04.14.00.0.18.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862949/329280
NFI3
forest area
avalanches SilvaProtect · main type of harvest
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/askidder125.53148.2261.6548.166.616390.12
forwarder32.5754.755.1186.3172.229100.74
mobile tower yarder2.2292.12911.61218.991.14135.97
cable crane0.5581.14112.81127.083.92145.46
helicopter1.1410.55811.71247.0618.9979.25
others0.7500.5580.7501.2380.21003.423
total162.52207.11103.53148.7332.87654.71
inside perimeterskidder2.8250.0.3.22310.6131.63318.110
forwarder0.6580.0.0.3710.21000.21001.238
mobile tower yarder0.7500.21002.92416.7100.94521.59
cable crane0.21000.0.3.82119.894.22027.98
helicopter0.4710.0.2.62618.7107.31529.08
others0.0.0.0.0.21000.5580.0.0.750
total4.6200.210013.11166.5514.11198.54
outside perimeterskidder23.0816.51054.9541.2613.511149.33
forwarder3.7222.6263.8224.1213.22317.510
mobile tower yarder2.5270.94518.31032.976.11760.65
cable crane1.4350.210016.81042.1623.3883.84
helicopter0.21000.21007.21539.1658.85105.44
others0.9450.0.0.7502.5271.1415.119
total31.8720.49101.63161.93106.03421.62
totalskidder151.42164.72119.73100.0421.79557.51
forwarder36.8657.359.21410.6135.618119.44
mobile tower yarder5.4183.22332.8768.658.015118.04
cable crane2.1291.33833.5788.8431.37157.13
helicopter1.6330.75021.49104.8485.03213.62
others1.6330.5581.6334.2201.2389.214
total198.91227.71218.21377.01152.921174.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #862950/329281
NFI4
forest area
avalanches SilvaProtect · main type of harvest
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectmain type of harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/askidder94.53114.0354.3538.474.421305.52
forwarder60.3586.1410.21411.2133.225171.03
mobile tower yarder5.2195.51919.11026.682.32958.86
cable crane1.0451.04510.61324.192.92639.67
helicopter0.6580.65816.31157.8622.3997.64
others1.7330.5580.8501.0452.4296.517
total163.42207.71111.33159.0337.57679.01
inside perimeterskidder2.4290.0.2.62810.3140.65715.911
forwarder0.9500.0.0.21000.6580.0.1.635
mobile tower yarder1.0450.0.3.72316.9111.73523.39
cable crane0.0.0.0.3.22414.8112.92620.910
helicopter0.21000.0.3.22523.498.11534.97
others0.21000.0.0.0.0.21000.21000.658
total4.7200.0.12.91266.1513.41197.24
outside perimeterskidder18.91013.11243.3632.689.514117.34
forwarder6.5174.9205.3195.7183.92326.49
mobile tower yarder4.3211.24125.6847.0612.71290.84
cable crane0.8500.210016.11135.9713.71166.65
helicopter0.6580.6587.51646.4665.14120.14
others1.0450.21000.21001.0452.4294.820
total32.0720.1998.13168.53107.33426.02
totalskidder115.83127.13100.2381.2514.511438.82
forwarder67.6591.0415.71117.5107.116199.03
mobile tower yarder10.6136.71748.4690.5416.710172.93
cable crane1.8331.24129.9874.8519.59127.14
helicopter1.4381.24127.08127.5395.53252.62
others2.9260.8501.0452.2305.02011.913
total200.11227.91222.31393.71158.321202.21
© WSL, Swiss National Forest Inventory, 18.06.2020 #862951/329282
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.82.516.36.830.37.331.31.645.85.043.43.463.216.112.43.810.91.039.13.747.63.461.94.18.55.024.54.524.02.660.46.154.23.921.63.566.94.13.40.718.74.240.12.27.41.134.18.671.32.930.00.5
11-20 years ago10.01.93.93.917.66.07.90.915.63.89.92.126.314.59.03.36.80.89.32.214.02.412.92.822.57.54.72.16.21.524.85.519.03.19.12.411.63.02.70.75.22.516.61.72.90.710.86.015.72.39.10.4
21-30 years ago3.71.215.77.113.95.55.00.710.33.13.81.30.0.5.92.56.20.812.32.59.82.19.32.56.44.55.42.23.81.28.43.611.12.64.81.88.82.73.00.72.71.97.91.24.40.96.44.66.31.66.00.3
31-40 years ago2.91.13.93.90.0.2.70.52.11.51.10.80.0.4.02.33.40.63.51.45.51.60.60.60.0.4.52.21.40.70.0.2.61.34.21.70.0.1.60.53.31.95.61.02.60.70.0.2.51.02.80.2
41-50 years ago1.30.70.0.0.0.0.70.33.72.12.01.00.0.2.61.91.70.41.20.80.90.70.0.0.0.3.31.90.70.51.91.91.81.13.51.60.0.1.50.52.31.62.40.73.00.70.0.0.90.61.60.2
over 50 years ago1.20.77.75.03.23.25.20.82.51.84.81.510.510.56.32.712.21.10.60.63.71.31.01.014.26.29.43.05.41.41.51.51.20.910.92.61.01.09.01.112.43.75.71.010.41.33.93.90.0.6.70.3
total100.0.47.69.765.07.052.91.779.94.165.13.1100.0.40.25.641.21.665.93.681.42.785.72.951.78.551.85.241.63.096.92.190.02.454.24.288.33.021.21.644.65.478.41.830.71.955.48.296.71.256.10.6
inside perimeterless than 10 years ago0.0.0.0.0.0.2.90.60.0.1.60.80.0.9.63.32.80.50.60.60.50.52.41.38.75.04.92.22.71.00.0.0.0.1.91.10.0.0.50.37.12.81.30.54.90.93.03.00.0.2.20.2
11-20 years ago0.0.3.93.91.91.92.10.50.0.0.0.0.0.1.21.12.80.60.50.50.0.1.30.92.12.10.0.1.40.70.0.0.0.0.80.80.0.0.60.34.52.21.80.62.70.70.0.0.0.1.50.2
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.50.50.0.2.61.91.90.51.00.70.60.60.0.0.0.0.0.0.80.60.0.0.0.0.60.60.0.0.80.30.0.1.00.42.40.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.70.30.0.0.40.40.0.3.82.21.40.40.60.60.50.50.0.0.0.0.70.71.70.80.0.0.0.0.80.80.0.1.10.44.82.40.20.21.90.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.60.20.0.0.0.0.0.2.61.90.40.20.0.0.0.0.0.0.0.1.11.10.40.40.0.0.0.0.70.70.0.1.10.42.41.70.40.32.20.60.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.6.12.73.90.60.0.0.0.0.0.3.13.12.01.50.90.60.0.0.60.60.70.70.0.3.70.73.92.20.60.46.61.00.0.0.0.2.00.2
total0.0.10.76.11.91.97.70.90.0.2.51.00.0.26.05.013.31.12.71.21.50.93.61.614.06.18.72.97.91.70.0.0.60.65.51.90.0.7.91.122.64.65.31.020.71.63.03.00.0.8.20.3
outside perimeterless than 10 years ago0.0.22.58.119.46.219.91.411.03.313.82.40.0.12.03.711.41.116.42.87.91.97.42.118.46.621.54.321.12.53.12.14.81.720.03.46.12.27.91.113.53.87.31.18.91.232.78.52.51.011.60.4
11-20 years ago0.0.8.54.46.33.57.00.92.11.54.01.30.0.8.43.19.11.04.11.53.41.32.01.28.55.05.52.411.41.90.0.0.60.66.82.14.52.05.00.97.52.93.50.86.51.03.03.00.0.5.50.3
21-30 years ago0.0.3.93.75.63.14.60.74.92.14.61.40.0.6.52.86.40.85.11.72.91.20.0.3.13.10.0.5.91.40.0.1.20.95.11.91.11.16.11.00.0.1.40.54.60.96.04.00.50.54.00.3
31-40 years ago0.0.2.82.80.0.2.50.51.21.24.31.30.0.0.0.2.90.62.31.20.90.70.0.0.0.2.01.53.31.10.0.0.50.51.91.10.0.4.70.95.72.51.20.54.10.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.20.50.90.92.51.00.0.3.52.02.30.50.60.60.60.60.0.0.0.1.31.31.60.80.0.1.51.13.21.40.0.5.80.91.21.20.60.36.11.00.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.10.60.0.3.21.30.0.3.52.013.61.12.81.31.40.81.20.84.32.99.23.07.21.60.0.0.80.83.41.50.0.41.42.04.92.42.40.718.41.60.0.0.0.9.80.4
total0.0.41.79.633.17.039.41.720.14.132.43.10.0.33.95.445.61.731.43.517.12.610.62.534.48.039.55.150.53.03.12.19.52.440.44.111.73.070.91.832.85.316.31.648.62.141.78.43.31.235.70.6
totalless than 10 years ago80.82.538.89.649.87.954.11.756.75.158.83.463.216.134.05.425.11.556.13.756.03.471.73.835.78.350.95.247.93.163.56.159.03.843.54.273.03.911.81.339.35.548.62.221.21.769.98.573.82.843.70.6
11-20 years ago10.01.916.46.925.76.817.01.317.74.013.92.426.314.518.64.418.71.313.92.617.32.716.23.133.28.410.23.119.12.424.85.519.73.116.73.216.23.48.41.117.14.321.81.912.11.313.86.615.72.316.10.5
21-30 years ago3.71.219.67.819.56.110.41.015.13.68.92.00.0.15.04.014.41.218.42.913.32.49.32.59.55.35.42.210.41.88.43.612.32.710.52.69.82.99.91.22.71.910.31.411.41.312.46.16.81.610.90.4
31-40 years ago2.91.113.66.60.0.5.90.83.31.95.81.60.0.7.83.17.70.96.41.96.91.80.60.60.0.7.22.76.41.50.0.3.11.46.92.20.0.7.51.113.83.77.01.18.61.20.0.2.51.06.20.3
41-50 years ago1.30.70.0.1.91.93.50.64.62.34.51.40.0.8.73.24.40.71.71.01.50.90.0.0.0.5.72.52.71.01.91.93.31.57.52.20.0.8.41.15.92.53.40.811.31.30.0.1.20.74.60.3
over 50 years ago1.20.711.66.23.23.29.11.02.51.88.01.910.510.515.94.129.71.53.41.45.01.62.21.321.67.120.64.213.42.11.51.52.61.314.92.91.01.054.12.021.24.68.71.335.52.03.93.90.0.18.50.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862952/329283
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago79.62.413.25.628.46.730.21.546.64.943.03.157.215.814.03.710.41.038.63.547.73.261.63.99.74.825.84.323.62.458.45.853.23.621.63.366.43.93.20.717.03.939.42.17.21.031.58.071.42.729.40.5
11-20 years ago10.21.93.23.215.45.27.80.915.23.69.01.823.813.28.93.16.90.810.62.213.72.213.82.818.86.44.42.06.51.423.34.918.72.88.22.212.52.92.50.64.42.215.21.53.40.79.65.415.52.28.90.3
21-30 years ago4.51.314.86.212.24.84.80.710.53.03.81.20.0.4.92.16.40.811.82.412.52.18.32.35.33.86.02.34.31.27.33.212.52.55.41.87.72.43.10.72.31.69.91.34.70.812.55.86.61.56.30.3
31-40 years ago3.01.06.34.43.32.33.00.51.91.40.90.60.0.3.62.03.40.63.11.34.71.40.60.60.0.4.12.01.30.60.0.2.31.24.51.60.0.1.70.55.42.45.51.03.30.70.0.2.71.02.90.2
41-50 years ago1.50.80.0.1.71.70.70.33.52.01.70.99.59.52.21.61.80.41.10.70.80.60.0.0.0.2.91.71.00.65.13.01.60.93.11.40.0.1.30.42.11.52.40.72.80.70.0.0.80.61.60.2
over 50 years ago1.10.77.04.65.33.64.80.72.41.74.81.49.59.59.53.012.31.02.11.13.41.20.80.812.15.39.32.85.01.31.41.41.71.09.82.30.90.99.01.112.63.45.51.010.81.23.33.30.0.6.70.3
total100.0.44.58.766.36.751.31.679.94.063.13.0100.0.43.05.341.31.567.33.482.92.485.22.745.97.952.44.941.82.895.62.590.12.352.64.087.52.920.81.543.85.178.01.732.11.857.07.797.01.155.90.5
inside perimeterless than 10 years ago0.0.0.0.0.0.3.10.60.0.1.60.80.0.9.23.03.00.50.60.60.40.42.01.17.64.34.42.02.40.90.0.0.0.1.71.00.0.0.50.38.32.81.30.54.70.82.92.90.0.2.20.2
11-20 years ago0.0.3.23.21.71.72.20.50.0.0.40.40.0.2.01.42.60.50.40.40.0.1.20.81.91.90.0.1.30.60.0.0.0.0.60.60.0.0.50.34.02.02.00.62.90.70.0.0.0.1.50.1
21-30 years ago0.0.3.23.22.62.71.00.30.0.0.40.40.0.2.41.72.00.40.90.60.40.40.0.2.52.50.0.1.00.60.0.0.0.0.50.50.0.1.00.40.0.0.90.42.30.60.0.0.0.1.10.1
31-40 years ago0.0.5.33.80.0.0.70.30.0.0.40.40.0.3.31.91.30.40.50.50.40.40.0.0.0.0.70.71.40.70.0.0.0.0.60.60.0.1.20.45.42.40.20.22.00.50.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.2.21.60.40.20.0.0.0.0.0.2.52.51.01.00.40.40.0.0.0.0.70.70.0.1.10.42.31.60.40.32.10.60.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.60.30.0.0.0.0.0.5.32.44.20.60.0.0.0.0.60.64.43.11.81.30.80.50.0.0.50.50.60.60.0.3.90.74.62.30.60.36.91.00.0.0.0.2.10.2
total0.0.11.65.64.33.18.20.90.0.2.71.00.0.24.54.513.51.12.41.11.30.73.81.518.96.37.92.67.31.50.0.0.50.54.81.70.0.8.21.024.64.55.41.020.81.62.92.90.0.8.40.3
outside perimeterless than 10 years ago0.0.26.47.617.05.520.21.310.03.115.12.30.0.13.63.711.31.015.62.77.51.78.12.121.76.620.64.020.82.34.42.55.41.721.83.36.72.29.31.112.73.57.11.19.01.131.38.02.30.911.80.4
11-20 years ago0.0.8.73.85.63.27.10.83.61.85.31.40.0.7.52.78.80.94.31.52.91.11.81.17.24.26.12.411.11.80.0.0.60.67.82.14.01.84.60.88.22.93.20.86.00.92.92.90.0.5.40.3
21-30 years ago0.0.3.53.45.02.85.10.74.52.04.61.40.0.5.72.56.30.84.71.52.51.00.0.2.52.50.0.5.91.30.0.1.10.85.11.81.81.35.80.90.0.1.40.54.40.85.94.00.40.43.90.2
31-40 years ago0.0.2.22.20.0.2.50.51.11.14.01.20.0.0.0.3.00.52.11.01.20.70.0.0.0.1.81.33.31.00.0.0.40.41.81.00.0.4.80.85.22.31.30.54.40.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.71.72.30.50.90.92.30.90.0.2.91.72.40.50.50.50.40.40.0.0.0.1.11.11.70.70.0.1.30.93.01.30.0.5.70.91.11.10.90.45.80.90.0.0.30.32.30.2
over 50 years ago0.0.3.23.20.0.3.30.60.0.2.71.10.0.2.91.713.41.13.11.21.20.71.10.83.92.610.13.08.21.60.0.0.60.63.11.40.0.40.81.94.52.22.80.717.51.50.0.0.0.9.70.3
total0.0.43.98.629.36.340.51.620.14.034.13.00.0.32.65.045.21.630.33.315.82.411.02.435.27.639.74.850.92.84.42.59.42.242.63.912.52.971.01.731.64.916.61.647.11.940.17.93.01.135.70.5
totalless than 10 years ago79.62.439.68.645.47.453.51.656.64.959.73.157.215.836.85.124.71.454.83.555.73.271.73.639.07.850.85.046.82.962.85.858.63.645.23.973.13.712.91.338.15.147.92.120.91.665.78.273.72.743.50.6
11-20 years ago10.21.915.05.822.76.017.11.218.83.914.72.323.813.218.44.118.31.215.32.616.62.416.83.027.97.410.53.118.92.223.34.919.32.916.62.916.53.37.61.016.64.020.41.712.21.312.66.015.52.215.80.4
21-30 years ago4.51.321.57.319.95.910.91.014.93.48.81.80.0.12.93.514.71.117.32.815.52.38.32.310.24.86.02.311.31.87.33.213.62.611.12.59.52.69.91.12.31.612.21.411.41.218.47.07.01.611.30.4
31-40 years ago3.01.013.86.03.32.36.20.83.01.75.31.40.0.6.92.87.80.95.71.76.31.60.60.60.0.6.52.46.01.40.0.2.81.26.92.00.0.7.71.016.03.87.01.19.71.20.0.2.71.06.30.3
41-50 years ago1.50.80.0.3.42.43.50.64.32.24.11.39.59.57.42.84.60.71.60.91.30.70.0.2.52.55.12.23.11.05.13.02.91.36.82.00.0.8.11.05.52.43.60.810.71.20.0.1.10.74.60.3
over 50 years ago1.10.710.25.55.33.68.80.92.41.77.51.79.59.517.63.930.01.55.21.64.71.42.61.320.46.321.24.014.02.01.41.42.91.313.62.70.90.953.71.921.64.38.81.235.21.93.33.30.0.18.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862953/329284
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.72.516.36.830.37.331.01.645.85.043.63.463.216.111.53.39.70.938.83.747.13.462.54.18.55.024.04.423.02.560.46.154.33.921.23.568.04.13.30.713.43.340.52.27.21.135.28.971.32.928.70.5
11-20 years ago10.12.03.93.917.66.07.60.915.63.89.92.126.314.59.53.06.20.89.32.213.62.413.12.922.57.55.72.36.21.524.85.519.23.19.32.511.23.03.50.76.22.516.21.72.80.711.26.215.72.38.90.4
21-30 years ago3.81.215.77.113.95.55.10.810.33.13.91.40.0.7.02.56.30.812.32.59.92.18.92.56.44.55.32.14.41.38.43.611.22.64.81.88.92.84.50.84.32.18.01.25.40.96.64.86.31.66.30.3
31-40 years ago3.01.13.93.90.0.3.10.62.11.51.10.80.0.4.42.24.70.73.51.45.61.60.70.70.0.4.42.21.40.70.0.2.71.34.31.70.0.2.70.62.81.65.71.03.00.70.0.2.51.03.30.2
41-50 years ago1.30.70.0.0.0.0.90.33.72.12.01.00.0.4.12.03.70.61.20.81.00.70.0.0.0.3.21.80.70.51.91.91.81.13.61.60.0.2.10.55.02.22.50.74.20.80.0.0.90.62.20.2
over 50 years ago1.20.77.75.03.23.26.30.82.51.84.41.410.510.513.63.416.01.20.60.64.21.41.01.014.26.210.23.18.21.71.51.51.30.910.32.50.0.8.91.116.33.75.61.010.91.34.14.00.0.7.90.3
total100.0.47.69.765.07.054.01.779.94.164.93.1100.0.50.15.146.61.665.73.681.32.786.22.851.78.552.85.144.03.096.92.190.52.453.54.288.13.025.01.648.04.978.41.833.51.857.18.496.71.257.30.6
inside perimeterless than 10 years ago0.0.0.0.0.0.2.90.60.0.1.60.80.0.8.02.72.40.50.60.60.50.52.41.48.75.04.82.22.71.00.0.0.0.2.01.10.0.0.50.35.92.41.30.54.70.83.13.10.0.2.10.2
11-20 years ago0.0.3.93.91.91.92.00.50.0.0.0.0.0.1.01.02.70.50.50.50.0.1.30.92.12.10.0.1.40.70.0.0.0.0.80.80.0.0.60.33.71.91.80.62.60.60.0.0.0.1.40.1
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.50.50.0.2.21.61.70.41.00.70.60.60.0.0.0.0.0.0.80.50.0.0.0.0.60.60.0.0.60.30.90.91.00.42.30.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.60.30.0.0.40.40.0.3.21.81.30.40.60.60.50.50.0.0.0.0.70.71.60.80.0.0.0.0.80.80.0.1.00.44.02.00.20.22.10.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.2.21.50.40.20.0.0.0.0.0.0.0.1.11.10.40.40.0.0.0.0.80.80.0.1.10.42.01.40.40.32.10.60.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.5.12.33.50.60.0.0.0.0.0.3.13.12.01.40.90.60.0.0.60.60.70.70.0.3.50.74.32.10.60.46.51.00.0.0.0.2.00.2
total0.0.10.76.11.91.97.60.90.0.2.51.00.0.21.74.211.91.02.71.21.50.93.71.614.06.18.52.87.91.70.0.0.60.65.51.90.0.7.31.020.84.15.41.020.21.63.13.10.0.8.00.3
outside perimeterless than 10 years ago0.0.22.58.119.46.219.21.311.03.313.92.40.0.10.03.110.21.016.52.98.01.96.82.018.46.621.14.220.22.43.12.14.91.720.33.46.22.27.31.011.33.27.21.18.51.133.78.72.51.011.10.4
11-20 years ago0.0.8.54.46.33.57.00.92.11.54.01.30.0.7.02.68.20.94.11.53.41.32.11.28.55.05.42.310.91.80.0.0.0.6.92.14.62.14.70.87.12.63.50.86.21.03.13.10.0.5.30.3
21-30 years ago0.0.3.93.75.63.14.60.74.92.14.71.50.0.5.42.45.70.75.21.72.91.20.0.3.13.10.0.5.81.40.0.1.30.95.21.91.11.16.30.90.0.1.40.54.40.83.13.10.50.53.90.2
31-40 years ago0.0.2.82.80.0.2.50.51.21.23.91.30.0.0.0.2.70.52.31.20.90.70.0.0.0.2.01.43.31.10.0.0.50.51.91.10.0.5.00.84.72.11.20.53.90.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.10.50.90.92.51.00.0.2.91.72.40.50.60.60.60.60.0.0.0.1.31.31.50.80.0.1.51.13.31.40.0.6.00.91.01.00.40.35.80.90.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.00.60.0.3.71.40.0.2.91.712.21.02.81.31.40.81.20.94.32.99.03.06.41.50.0.0.80.83.41.50.0.38.51.87.02.62.50.717.51.50.0.0.0.9.60.3
total0.0.41.79.633.17.038.41.720.14.132.63.10.0.28.24.741.41.531.53.517.22.710.12.434.48.038.65.048.23.03.12.18.92.340.94.211.93.067.71.731.24.716.21.746.32.039.98.63.31.234.70.6
totalless than 10 years ago80.72.538.89.649.87.953.11.756.75.159.13.463.216.129.54.722.41.355.93.755.53.571.83.935.78.349.95.245.93.063.56.159.23.943.54.274.23.911.11.230.64.748.92.320.41.672.08.573.82.841.90.6
11-20 years ago10.12.016.46.925.76.816.71.317.74.013.92.426.314.517.53.917.01.214.02.717.02.716.53.233.28.411.03.218.52.324.85.519.23.116.93.215.83.48.71.117.13.821.51.911.51.314.26.815.72.315.60.5
21-30 years ago3.81.219.67.819.56.110.51.015.13.69.02.00.0.14.63.613.71.118.53.013.42.48.92.59.55.35.32.111.01.98.43.612.52.710.62.610.02.911.31.25.22.310.51.412.01.39.75.76.81.611.10.4
31-40 years ago3.01.113.66.60.0.6.10.83.31.95.41.50.0.7.62.88.70.96.41.97.01.80.70.70.0.7.12.76.41.50.0.3.21.47.02.20.0.8.81.111.53.17.11.29.01.20.0.2.51.06.60.3
41-50 years ago1.30.70.0.1.91.93.60.64.62.34.61.40.0.9.23.06.40.81.81.01.50.90.0.0.0.5.62.42.71.01.91.93.41.57.62.20.0.9.21.18.02.73.30.812.11.30.0.1.20.75.20.3
over 50 years ago1.20.711.66.23.23.210.01.02.51.88.01.910.510.521.74.231.81.53.51.45.61.62.21.321.67.121.24.215.52.21.51.52.61.314.42.90.0.50.91.927.64.58.71.335.01.94.14.00.0.19.50.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862954/329285
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.82.516.36.830.37.330.81.545.85.043.23.463.216.111.33.39.60.939.13.747.33.461.94.18.55.024.04.423.12.560.46.154.23.921.63.566.94.13.40.715.13.539.82.27.11.034.18.671.32.928.60.5
11-20 years ago10.01.93.93.917.66.07.70.915.63.89.92.126.314.510.63.26.30.89.32.213.92.412.92.822.57.55.72.36.01.424.85.519.03.19.12.411.63.03.60.76.02.416.61.72.70.710.86.015.72.38.90.4
21-30 years ago3.71.215.77.113.95.55.00.710.33.13.81.30.0.6.92.56.20.812.32.59.82.19.32.56.44.55.32.14.31.28.43.611.12.64.81.88.82.74.40.84.22.08.31.25.40.96.44.66.31.66.30.3
31-40 years ago2.91.13.93.90.0.3.10.62.11.51.10.80.0.4.42.14.80.73.51.45.51.60.60.60.0.4.42.21.40.70.0.2.61.34.21.70.0.2.70.62.71.55.61.03.20.70.0.2.51.03.30.2
41-50 years ago1.30.70.0.0.0.0.90.33.72.12.01.00.0.4.12.03.70.61.20.80.90.70.0.0.0.3.21.80.70.51.91.91.81.13.51.60.0.2.00.54.82.12.40.74.40.80.0.0.90.62.20.2
over 50 years ago1.20.77.75.03.23.26.40.82.51.84.81.510.510.513.53.416.31.10.60.64.11.41.01.014.26.210.23.18.01.61.51.51.20.910.92.61.01.09.01.116.83.75.91.111.21.33.93.90.0.8.10.3
total100.0.47.69.765.07.053.91.779.94.164.83.1100.0.50.75.146.91.565.93.681.52.785.72.951.78.552.85.143.52.996.92.190.02.454.24.288.33.025.21.649.64.878.61.834.01.855.48.296.71.257.40.5
inside perimeterless than 10 years ago0.0.0.0.0.0.2.80.60.0.1.60.80.0.7.92.72.40.50.60.60.50.52.41.38.75.04.82.22.61.00.0.0.0.1.91.10.0.0.50.35.72.31.30.54.70.83.03.00.0.2.10.2
11-20 years ago0.0.3.93.91.91.92.00.50.0.0.0.0.0.0.90.92.60.50.50.50.0.1.30.92.12.10.0.1.40.70.0.0.0.0.80.80.0.0.60.33.61.81.80.62.50.60.0.0.0.1.40.1
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.50.50.0.2.21.51.80.41.00.70.60.60.0.0.0.0.0.0.70.50.0.0.0.0.60.60.0.0.70.30.80.81.00.42.30.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.70.30.0.0.40.40.0.3.21.81.30.30.60.60.50.50.0.0.0.0.70.71.60.80.0.0.0.0.80.80.0.1.00.43.91.90.20.22.10.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.2.21.50.50.20.0.0.0.0.0.0.0.1.11.10.40.40.0.0.0.0.70.70.0.1.10.42.01.40.40.32.00.60.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.5.12.33.50.60.0.0.0.0.0.3.13.12.01.40.80.60.0.0.60.60.70.70.0.3.50.74.12.00.60.36.41.00.0.0.0.2.00.2
total0.0.10.76.11.91.97.60.90.0.2.51.00.0.21.44.212.11.02.71.21.50.93.61.614.06.18.52.87.61.60.0.0.60.65.51.90.0.7.41.020.14.05.21.020.11.63.03.00.0.8.00.3
outside perimeterless than 10 years ago0.0.22.58.119.46.219.51.311.03.313.82.40.0.9.93.110.00.916.42.87.91.97.42.118.46.621.14.220.32.43.12.14.81.720.03.46.12.27.21.010.93.17.21.18.51.132.78.52.51.011.00.4
11-20 years ago0.0.8.54.46.33.56.90.92.11.54.01.30.0.7.02.68.00.94.11.53.31.32.01.28.55.05.42.311.31.90.0.0.60.66.82.14.52.04.60.86.92.53.50.86.21.03.03.00.0.5.30.3
21-30 years ago0.0.3.93.75.63.14.50.74.92.14.61.40.0.5.32.35.80.75.11.72.91.20.0.3.13.10.0.5.61.30.0.1.20.95.11.91.11.16.20.90.0.1.40.54.30.86.04.00.50.53.90.2
31-40 years ago0.0.2.82.80.0.2.50.51.21.24.31.30.0.0.0.2.60.52.31.20.90.70.0.0.0.2.01.43.21.10.0.0.50.51.91.10.0.5.00.84.62.01.20.53.80.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.20.50.90.92.51.00.0.2.91.72.30.50.60.60.60.60.0.0.0.1.31.31.50.80.0.1.51.13.21.40.0.5.90.91.01.00.60.35.80.90.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.10.60.0.3.61.40.0.2.91.712.31.02.81.31.40.81.20.84.32.99.03.06.91.50.0.0.80.83.41.50.0.38.51.86.82.52.40.717.41.50.0.0.0.9.60.3
total0.0.41.79.633.17.038.61.620.14.132.73.10.0.27.94.641.01.531.43.517.02.610.62.534.48.038.65.048.93.03.12.19.52.440.44.111.73.067.41.730.24.616.21.646.02.041.78.43.31.234.70.6
totalless than 10 years ago80.82.538.89.649.87.953.11.756.75.158.63.463.216.129.14.722.11.356.13.755.73.471.73.835.78.349.95.246.03.063.56.159.03.843.54.273.03.911.11.231.84.648.22.220.21.669.98.573.82.841.70.6
11-20 years ago10.01.916.46.925.76.816.61.317.74.013.82.426.314.518.54.016.81.213.92.617.22.716.23.133.28.411.03.218.72.324.85.519.73.116.73.216.23.48.81.116.53.721.91.911.41.313.86.615.72.315.60.5
21-30 years ago3.71.219.67.819.56.110.31.015.13.68.92.00.0.14.43.513.81.118.42.913.22.49.32.59.55.35.32.110.71.88.43.612.32.710.52.69.82.911.31.25.02.210.61.412.01.312.46.16.81.611.10.4
31-40 years ago2.91.113.66.60.0.6.30.83.31.95.71.50.0.7.52.88.70.96.41.96.91.80.60.60.0.7.12.76.21.50.0.3.11.46.92.20.0.8.71.111.13.07.01.19.11.20.0.2.51.06.60.3
41-50 years ago1.30.70.0.1.91.93.60.64.62.34.51.40.0.9.12.96.50.81.71.01.50.90.0.0.0.5.62.42.61.01.91.93.31.57.52.20.0.9.11.17.82.63.40.812.21.30.0.1.20.75.20.3
over 50 years ago1.20.711.66.23.23.210.11.02.51.88.42.010.510.521.44.232.11.53.41.45.51.62.21.321.67.121.24.215.72.21.51.52.61.314.92.91.01.051.01.927.74.58.91.335.11.93.93.90.0.19.70.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862955/329286
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.72.516.36.830.37.330.21.545.25.042.73.460.115.610.53.09.30.938.83.746.23.462.24.18.44.923.64.421.72.460.46.154.33.920.23.368.04.13.00.611.93.039.72.26.81.034.18.671.32.927.70.5
11-20 years ago10.12.03.93.917.66.07.40.915.43.89.72.125.013.88.62.86.00.79.32.213.42.413.02.922.17.35.62.35.81.424.85.519.23.18.82.411.23.03.30.65.52.216.11.72.60.610.86.015.72.38.50.3
21-30 years ago3.81.215.77.113.95.55.00.710.23.13.81.30.0.6.42.36.10.712.32.59.72.18.82.56.34.45.22.14.21.28.43.611.22.64.61.78.92.84.30.75.52.27.91.25.20.96.44.66.31.66.20.3
31-40 years ago3.01.13.93.90.0.3.10.62.11.51.10.80.0.4.02.04.50.73.51.45.51.60.70.70.0.4.32.11.30.70.0.2.71.34.11.70.0.2.70.62.41.45.61.03.00.70.0.2.51.03.20.2
41-50 years ago1.30.70.0.0.0.1.00.33.72.12.01.00.0.3.71.93.70.61.20.80.90.70.0.0.0.3.21.80.70.51.91.91.81.13.41.50.0.2.40.64.41.92.40.75.00.90.0.0.90.62.30.2
over 50 years ago1.20.77.75.03.23.27.80.93.72.16.31.715.010.915.13.416.81.20.60.65.51.61.01.016.06.310.03.08.71.71.51.51.30.911.22.60.0.12.11.220.53.86.51.112.21.33.93.90.0.9.20.4
total100.0.47.69.765.07.054.61.780.24.165.63.1100.0.48.34.846.41.565.73.681.12.785.72.952.78.551.85.142.42.996.92.190.52.452.54.188.13.027.81.650.34.678.11.834.81.855.48.296.71.257.10.5
inside perimeterless than 10 years ago0.0.0.0.0.0.2.80.60.0.1.60.80.0.7.32.52.40.50.60.60.50.52.41.48.54.94.72.12.61.00.0.0.0.2.41.20.0.0.40.25.22.11.40.54.50.83.03.00.0.2.10.2
11-20 years ago0.0.3.93.91.91.92.10.50.0.0.0.0.0.0.90.92.50.50.50.50.0.1.30.92.12.10.0.1.30.70.0.0.0.2.01.20.0.0.50.33.31.61.80.62.40.60.0.0.0.1.40.1
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.50.50.0.2.01.41.60.41.00.70.60.60.0.0.0.0.0.0.70.50.0.0.0.0.60.60.0.0.50.30.80.81.00.42.20.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.60.20.0.0.40.40.0.2.91.71.20.30.60.60.50.50.0.0.0.0.70.71.50.80.0.0.0.0.70.70.0.0.90.43.61.80.20.22.00.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.2.01.40.40.20.0.0.0.0.0.0.0.1.11.10.40.40.0.0.0.0.70.70.0.1.00.41.81.20.40.32.00.50.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.5.82.33.70.60.0.0.0.0.0.3.13.01.91.41.10.70.0.0.60.60.70.70.0.3.20.63.81.90.80.46.81.00.0.0.0.2.10.2
total0.0.10.76.11.91.97.40.90.0.2.51.00.0.20.94.012.01.02.71.21.50.93.71.613.76.08.42.87.71.60.0.0.60.67.12.10.0.6.60.918.43.65.61.019.91.53.03.00.0.7.90.3
outside perimeterless than 10 years ago0.0.22.58.119.46.218.81.310.83.313.62.40.0.10.23.09.80.916.52.97.81.97.32.018.16.520.74.119.42.33.12.14.91.719.43.36.22.26.90.910.02.97.01.18.11.132.78.52.51.010.70.4
11-20 years ago0.0.8.54.46.33.56.80.82.11.53.91.30.0.7.32.57.80.84.11.53.31.22.11.28.44.95.92.410.91.80.0.0.0.6.52.04.62.14.20.76.32.33.50.85.90.93.03.00.0.5.20.3
21-30 years ago0.0.3.93.75.63.14.50.74.82.14.61.40.0.4.92.16.00.75.21.72.91.20.0.3.13.00.0.5.51.30.0.1.30.94.91.81.11.15.70.90.0.1.40.54.20.86.04.00.50.53.90.2
31-40 years ago0.0.2.82.80.0.2.40.51.21.23.81.20.0.0.0.2.80.52.31.21.40.80.0.0.0.1.91.43.41.10.0.0.50.51.81.10.0.4.80.84.21.91.20.53.70.70.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.20.50.90.92.51.00.0.2.61.52.30.50.60.60.60.60.0.0.0.2.51.71.50.70.0.1.51.13.91.60.0.5.50.81.81.30.40.35.90.90.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.30.60.0.3.61.40.0.5.82.312.91.02.81.31.40.81.20.94.22.88.82.99.31.80.0.0.80.83.91.60.0.38.51.89.02.82.80.717.51.50.0.0.0.10.30.4
total0.0.41.79.633.17.038.01.619.84.132.03.10.0.30.94.541.61.531.53.517.42.710.62.433.68.039.85.049.92.93.12.18.92.340.44.111.93.065.61.731.34.416.31.645.32.041.78.43.31.234.90.5
totalless than 10 years ago80.72.538.89.649.87.951.81.756.15.157.93.460.115.628.04.421.61.355.93.754.53.471.93.835.08.248.95.143.62.963.56.159.23.942.04.174.23.910.31.127.14.248.12.219.41.669.98.573.82.840.50.6
11-20 years ago10.12.016.46.925.76.816.21.217.53.913.72.325.013.816.83.616.31.214.02.716.72.616.43.232.58.211.53.218.02.224.85.519.23.117.43.215.83.48.01.015.13.421.31.811.01.213.86.615.72.315.20.4
21-30 years ago3.81.219.67.819.56.110.41.015.03.58.81.90.0.13.33.313.81.118.53.013.12.48.82.59.35.25.22.110.41.88.43.612.52.710.12.510.02.910.51.16.32.310.21.311.51.312.46.16.81.610.90.4
31-40 years ago3.01.113.66.60.0.6.00.83.31.95.31.50.0.6.92.68.60.96.41.97.31.80.70.70.0.6.92.66.31.50.0.3.21.46.72.10.0.8.51.010.22.87.01.18.81.10.0.2.51.06.50.3
41-50 years ago1.30.70.0.1.91.93.80.64.62.34.51.40.0.8.42.76.40.81.81.01.50.90.0.0.0.6.72.72.51.01.91.93.41.58.02.20.0.8.91.08.02.53.20.812.81.30.0.1.20.75.40.3
over 50 years ago1.20.711.66.23.23.211.81.13.72.19.92.115.010.926.64.433.41.53.51.46.91.82.21.323.27.120.84.119.22.31.51.52.61.315.83.00.0.53.81.833.34.510.11.436.51.93.93.90.0.21.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862956/329287
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago79.62.413.25.628.46.728.81.446.14.941.63.154.615.311.32.98.80.838.43.546.43.161.33.89.34.624.74.221.42.258.45.853.23.620.63.166.43.93.00.612.22.938.42.06.60.931.58.071.42.727.00.5
11-20 years ago10.21.93.23.215.45.27.40.815.03.59.11.822.712.79.22.76.20.710.52.213.32.213.82.818.16.15.02.05.91.323.34.918.72.87.82.112.52.93.20.64.61.815.01.53.00.69.65.415.52.28.40.3
21-30 years ago4.51.314.86.212.24.84.90.710.43.03.61.20.0.6.82.26.30.711.82.412.22.18.32.25.13.65.72.24.51.17.33.212.52.55.11.77.72.44.40.76.22.110.01.35.30.812.55.86.61.56.50.3
31-40 years ago3.01.06.34.43.32.33.30.61.91.40.90.60.0.3.51.84.70.63.11.24.51.30.60.60.0.3.91.91.20.60.0.2.31.24.31.60.0.2.70.54.61.95.41.03.80.70.0.2.71.03.30.2
41-50 years ago1.50.80.0.1.71.71.10.33.42.01.70.89.19.13.21.63.90.61.60.90.80.60.0.0.0.2.81.60.90.55.13.01.60.93.01.30.0.2.10.54.51.82.30.64.60.80.0.0.80.62.30.2
over 50 years ago1.10.77.04.65.33.67.60.83.42.07.11.613.69.915.93.216.91.12.11.05.81.50.80.815.55.69.72.88.41.51.41.41.71.010.62.40.90.912.31.120.23.46.81.113.11.33.33.30.0.9.40.3
total100.0.44.58.766.36.753.21.580.13.964.02.9100.0.50.04.546.81.467.43.483.02.484.82.748.07.851.94.842.32.795.62.590.12.351.43.987.52.927.61.552.34.377.91.736.41.757.07.797.01.157.10.5
inside perimeterless than 10 years ago0.0.0.0.0.0.2.90.50.0.1.50.70.0.6.92.22.60.50.60.60.40.42.01.17.34.24.21.92.20.80.0.0.0.2.11.10.0.0.40.26.02.11.50.54.20.72.92.90.0.2.00.2
11-20 years ago0.0.3.23.21.71.72.20.50.0.0.40.40.0.1.51.12.30.40.40.40.0.1.10.81.91.90.0.1.20.60.0.0.0.1.71.00.0.0.40.22.91.42.00.62.60.60.0.0.0.1.40.1
21-30 years ago0.0.3.23.22.62.71.00.30.0.0.40.40.0.1.81.31.80.40.90.60.40.40.0.2.42.40.0.0.90.60.0.0.0.0.50.50.0.0.80.30.70.70.90.42.10.50.0.0.0.1.00.1
31-40 years ago0.0.5.33.80.0.0.70.20.0.0.40.40.0.2.51.41.10.30.50.50.40.40.0.0.0.0.60.61.30.60.0.0.0.0.60.60.0.1.00.33.91.70.20.22.10.50.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.1.71.20.40.20.0.0.0.0.0.2.42.41.01.00.30.30.0.0.0.0.60.60.0.1.00.31.61.10.40.31.90.50.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.60.20.0.0.0.0.0.5.92.24.00.60.0.0.0.0.60.64.23.02.71.61.60.70.0.0.50.50.60.60.0.3.30.64.01.80.70.46.90.90.0.0.0.2.20.2
total0.0.11.65.64.33.17.80.80.0.2.61.00.0.20.33.712.31.02.41.11.20.73.71.518.16.08.52.77.51.50.0.0.50.56.21.80.0.6.90.819.13.45.51.019.71.42.92.90.0.8.10.3
outside perimeterless than 10 years ago0.0.26.47.617.05.519.11.29.93.014.62.30.0.11.22.99.60.915.62.77.31.78.52.120.86.419.73.819.22.14.42.55.41.721.43.26.72.27.90.99.12.56.91.08.11.031.38.02.30.910.90.4
11-20 years ago0.0.8.73.85.63.26.80.83.61.85.11.40.0.6.32.27.50.84.31.52.81.11.81.07.04.16.52.410.91.70.0.0.60.67.42.04.01.83.90.76.52.23.10.75.40.82.92.90.0.5.10.3
21-30 years ago0.0.3.53.45.02.84.90.74.41.94.51.30.0.4.21.95.80.74.61.52.41.00.0.2.42.40.0.5.71.20.0.1.10.84.91.71.81.35.40.80.0.1.40.54.00.75.94.00.40.43.80.2
31-40 years ago0.0.2.22.20.0.2.40.51.11.13.91.20.0.0.0.2.80.52.11.01.60.80.0.0.0.1.71.23.31.00.0.0.40.41.71.00.0.4.70.73.71.61.30.53.90.70.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.71.72.40.50.80.82.30.90.0.2.21.32.30.40.50.50.40.40.0.0.0.2.11.41.50.70.0.1.30.93.41.40.0.5.30.81.61.10.90.45.60.90.0.0.30.32.40.2
over 50 years ago0.0.3.23.20.0.3.50.60.0.3.01.10.0.5.82.212.91.03.11.21.20.71.10.83.72.59.72.99.61.60.0.0.60.63.61.50.0.38.31.77.82.43.10.716.91.40.0.0.0.10.20.3
total0.0.43.98.629.36.339.01.519.93.933.42.90.0.29.74.240.91.430.13.315.82.311.52.433.97.439.64.750.22.74.42.59.42.242.33.812.52.965.51.628.74.016.61.543.91.840.17.93.01.134.80.5
totalless than 10 years ago79.62.439.68.645.47.450.81.656.04.957.73.154.615.329.44.221.11.254.53.554.03.171.83.637.57.648.64.842.82.762.85.858.63.644.13.873.13.711.21.127.23.946.82.118.91.565.78.273.72.740.00.5
11-20 years ago10.21.915.05.822.76.016.41.218.63.814.62.222.712.717.03.416.01.115.22.616.22.416.73.026.97.111.53.118.02.123.34.919.32.917.02.916.53.37.50.914.03.120.01.711.01.212.66.015.52.214.90.4
21-30 years ago4.51.321.57.319.95.910.81.014.83.48.51.80.0.12.83.013.91.017.32.715.02.38.32.29.84.75.72.211.11.77.33.213.62.610.62.49.52.610.61.16.82.212.21.411.31.218.47.07.01.611.30.4
31-40 years ago3.01.013.86.03.32.36.30.83.01.75.11.40.0.6.02.28.70.85.71.76.51.60.60.60.0.6.22.35.71.30.0.2.81.26.51.90.0.8.41.012.22.96.81.19.81.10.0.2.71.06.60.3
41-50 years ago1.50.80.0.3.42.44.00.64.32.13.91.29.19.17.12.36.60.72.11.01.20.70.0.2.42.45.92.32.80.95.13.02.91.37.02.00.0.8.50.97.72.33.50.812.11.20.0.1.10.75.30.3
over 50 years ago1.10.710.25.55.33.611.71.03.42.010.21.913.69.927.74.133.71.45.21.67.01.62.61.323.46.322.14.019.62.21.41.42.91.314.82.70.90.953.91.732.04.110.61.336.81.83.33.30.0.21.80.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862957/329288
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago80.82.516.36.830.37.330.01.545.25.042.33.460.115.610.33.09.30.939.13.746.33.461.64.18.44.923.34.321.82.460.46.154.23.920.53.366.94.13.10.613.53.239.02.26.81.034.18.671.32.927.60.5
11-20 years ago10.01.93.93.917.66.07.50.915.43.89.72.125.013.89.62.96.10.79.32.213.62.412.82.822.17.35.52.25.71.424.85.519.03.18.72.311.63.03.40.75.42.116.31.62.60.610.86.015.72.38.60.3
21-30 years ago3.71.215.77.113.95.55.00.710.23.13.71.30.0.6.32.36.10.712.32.59.52.09.32.56.34.45.12.14.11.28.43.611.12.64.51.78.82.74.40.75.42.18.11.25.10.96.44.66.31.66.20.3
31-40 years ago2.91.13.93.90.0.3.10.62.11.51.00.80.0.4.02.04.70.73.51.45.41.60.60.60.0.4.32.11.30.70.0.2.61.34.01.60.0.2.70.62.41.45.51.03.20.70.0.2.51.03.20.2
41-50 years ago1.30.70.0.0.0.1.00.33.72.12.01.00.0.3.71.83.80.61.20.80.90.60.0.0.0.3.21.80.70.51.91.91.81.13.31.50.0.2.40.54.31.92.40.75.10.90.0.0.90.62.30.2
over 50 years ago1.20.77.75.03.23.28.00.93.72.16.71.715.010.914.93.416.91.10.60.65.81.61.01.016.06.39.93.08.51.61.51.51.20.911.72.61.01.012.21.220.93.86.91.112.51.33.93.90.0.9.40.4
total100.0.47.69.765.07.054.61.680.24.165.53.1100.0.48.94.846.81.565.93.681.52.785.32.952.78.551.25.142.02.996.92.190.02.452.84.188.33.028.21.651.74.578.21.835.21.855.48.296.71.257.20.5
inside perimeterless than 10 years ago0.0.0.0.0.0.2.70.50.0.1.60.80.0.7.22.52.50.50.60.60.50.52.31.38.54.94.62.12.50.90.0.0.0.2.41.20.0.0.40.25.12.01.40.54.40.83.03.00.0.2.00.2
11-20 years ago0.0.3.93.91.91.92.00.50.0.0.0.0.0.0.90.92.50.50.50.50.0.1.30.92.12.10.0.1.30.70.0.0.0.2.01.20.0.0.50.33.21.61.80.62.40.60.0.0.0.1.40.1
21-30 years ago0.0.0.0.0.0.0.80.30.0.0.40.40.0.2.01.41.70.41.00.70.60.60.0.0.0.0.0.0.70.50.0.0.0.0.50.50.0.0.60.30.80.80.90.42.10.60.0.0.0.0.90.1
31-40 years ago0.0.6.84.90.0.0.70.30.0.0.40.40.0.2.91.71.20.30.60.60.50.50.0.0.0.0.70.71.50.80.0.0.0.0.70.70.0.0.90.43.51.70.20.22.00.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.2.01.40.50.20.0.0.0.0.0.0.0.1.11.10.40.40.0.0.0.0.70.70.0.1.00.41.71.20.40.31.90.50.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.70.30.0.0.0.0.0.5.72.33.70.60.0.0.0.0.0.3.13.03.01.81.10.60.0.0.60.60.60.60.0.3.10.63.71.80.80.46.71.00.0.0.0.2.10.2
total0.0.10.76.11.91.97.40.90.0.2.41.00.0.20.64.012.01.02.71.21.50.83.61.613.76.09.42.97.51.60.0.0.60.67.02.10.0.6.60.917.93.55.51.019.71.53.03.00.0.7.90.3
outside perimeterless than 10 years ago0.0.22.58.119.46.218.91.310.83.313.52.30.0.10.13.09.70.916.42.87.71.97.92.118.16.520.44.119.62.33.12.14.81.719.63.36.12.26.80.99.72.87.11.18.01.132.78.52.51.010.70.4
11-20 years ago0.0.8.54.46.33.56.70.82.11.53.91.30.0.7.22.57.70.84.11.53.31.22.01.28.44.95.92.411.31.80.0.0.60.66.42.04.52.04.20.76.12.23.40.85.90.93.03.00.0.5.20.3
21-30 years ago0.0.3.93.75.63.14.50.74.82.14.51.40.0.4.92.16.00.75.11.72.81.10.0.3.13.00.0.5.71.30.0.1.20.94.81.81.11.15.60.80.0.1.40.54.10.86.04.00.50.53.90.2
31-40 years ago0.0.2.82.80.0.2.40.51.21.24.21.30.0.0.0.2.80.52.31.21.40.80.0.0.0.1.91.43.31.10.0.0.50.51.81.00.0.4.70.84.11.81.20.53.60.70.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.91.92.30.50.90.92.41.00.0.2.61.52.30.50.60.60.60.60.0.0.0.2.41.71.40.70.0.1.51.13.81.50.0.5.50.81.81.20.60.36.00.90.0.0.30.32.40.2
over 50 years ago0.0.3.93.90.0.3.30.60.0.3.61.30.0.5.72.312.81.02.81.31.40.81.20.84.22.88.82.99.11.70.0.0.80.83.81.60.0.38.41.78.72.72.80.717.51.50.0.0.0.10.30.3
total0.0.41.79.633.17.038.01.619.84.132.13.10.0.30.54.541.21.531.43.517.12.611.12.533.68.039.45.050.42.93.12.19.52.440.34.011.73.065.21.730.44.316.31.645.11.941.78.43.31.234.80.5
totalless than 10 years ago80.82.538.89.649.87.951.61.656.15.157.43.460.115.627.74.421.41.356.13.754.43.471.93.835.08.248.45.143.92.963.56.159.03.842.54.073.03.910.31.128.34.247.52.219.21.669.98.573.82.840.30.6
11-20 years ago10.01.916.46.925.76.816.21.217.53.913.62.325.013.817.73.716.31.113.92.616.82.616.13.132.58.211.43.118.32.224.85.519.73.117.13.116.23.48.11.014.73.421.41.810.91.213.86.615.72.315.20.4
21-30 years ago3.71.219.67.819.56.110.21.015.03.58.71.90.0.13.13.213.81.118.42.912.92.39.32.59.35.25.12.110.51.88.43.612.32.79.92.59.82.910.61.16.12.210.41.311.41.312.46.16.81.610.90.4
31-40 years ago2.91.113.66.60.0.6.20.83.31.95.61.50.0.6.92.58.60.96.41.97.21.80.60.60.0.6.82.66.11.40.0.3.11.46.52.00.0.8.41.09.92.76.81.18.81.10.0.2.51.06.50.3
41-50 years ago1.30.70.0.1.91.93.80.64.62.34.41.40.0.8.32.76.50.81.71.01.50.90.0.0.0.6.72.62.50.91.91.93.31.57.82.20.0.8.81.07.82.53.30.813.01.30.0.1.20.75.40.3
over 50 years ago1.20.711.66.23.23.212.01.13.72.110.22.115.010.926.34.333.41.53.41.47.21.82.21.323.27.121.64.218.72.31.51.52.61.316.23.01.01.053.81.833.24.410.51.436.71.93.93.90.0.21.70.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862958/329289
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago75.62.83.03.029.17.132.21.643.95.238.53.475.016.29.53.59.91.138.33.751.43.566.44.118.07.010.53.022.02.747.96.557.44.017.73.466.24.63.40.88.83.541.42.34.71.045.39.569.12.930.20.6
11-20 years ago14.12.318.17.620.26.58.51.017.94.014.12.50.0.8.43.37.10.912.02.518.12.711.52.713.56.516.74.08.01.832.36.219.03.111.92.913.13.32.50.77.23.115.11.73.60.84.34.316.82.410.40.4
21-30 years ago3.91.30.0.7.53.63.70.76.62.73.61.325.016.25.92.94.50.86.51.93.11.33.21.411.16.16.22.64.41.313.34.43.61.54.01.85.12.20.60.35.02.87.31.21.60.60.0.6.41.64.20.3
31-40 years ago0.90.616.47.35.03.72.70.65.72.53.31.30.0.4.02.23.60.74.81.73.61.43.71.70.0.2.61.51.30.70.0.3.71.53.81.73.31.91.20.51.51.54.10.92.10.60.0.2.61.12.90.2
41-50 years ago2.10.94.14.10.0.1.70.51.01.01.61.00.0.2.92.12.00.51.81.02.21.10.0.0.0.5.92.60.80.61.91.93.41.53.81.70.0.1.40.54.02.24.21.01.80.60.0.0.80.62.00.2
over 50 years ago3.01.14.03.93.23.23.10.65.22.54.21.50.0.4.82.710.41.11.81.02.71.21.01.06.24.48.13.04.71.41.51.53.11.411.62.90.0.7.31.210.73.94.71.011.11.44.34.30.90.65.70.3
total100.0.45.59.965.07.051.81.880.34.265.33.2100.0.35.55.837.51.865.13.781.12.885.82.948.79.150.15.441.23.296.92.190.32.452.84.587.83.116.31.637.25.976.92.024.81.954.08.996.61.255.30.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.3.00.60.0.1.70.80.0.8.13.22.30.60.60.60.0.3.11.63.83.71.91.43.11.20.0.0.0.0.70.70.0.0.80.47.43.31.80.65.11.03.33.30.0.2.10.2
11-20 years ago0.0.4.14.10.0.1.80.50.0.0.0.0.0.5.62.82.80.60.60.60.50.50.0.8.64.93.21.91.30.80.0.0.0.1.51.10.0.0.50.35.72.60.70.44.30.90.0.0.0.1.60.2
21-30 years ago0.0.0.0.1.91.91.20.40.0.0.0.0.0.1.31.32.20.50.50.50.0.0.70.70.0.0.0.1.10.70.0.0.0.1.51.10.0.0.40.32.82.01.40.62.10.60.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.50.20.0.0.90.60.0.2.71.81.80.51.00.70.50.50.0.0.0.0.0.0.40.40.0.0.0.0.0.0.0.0.20.21.51.50.70.41.60.60.0.0.0.0.70.1
41-50 years ago0.0.7.05.00.0.0.40.20.0.0.0.0.0.1.61.61.50.40.0.0.60.60.0.0.0.0.80.81.50.90.0.0.0.0.90.90.0.1.00.53.02.10.40.31.80.60.0.0.0.0.80.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.8.53.43.80.70.0.0.0.0.0.3.63.53.32.01.50.90.0.0.60.60.80.80.0.5.21.06.43.10.70.48.31.20.0.0.0.2.40.2
total0.0.11.16.31.91.97.90.90.0.2.61.00.0.27.85.414.31.32.81.21.60.93.81.715.96.99.23.08.91.90.0.0.60.65.42.00.0.8.01.226.95.55.71.123.11.83.33.30.0.8.50.4
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.15.27.210.74.819.41.47.72.915.72.50.0.11.43.99.81.115.02.86.91.89.22.48.64.925.14.520.42.51.51.54.51.719.33.64.51.98.51.315.84.77.11.212.51.540.09.02.71.111.50.4
11-20 years ago0.0.14.16.810.64.77.80.95.72.55.41.60.0.8.53.49.11.17.82.16.81.80.0.12.25.81.41.413.32.21.51.51.30.910.72.82.51.54.50.94.52.63.30.96.41.12.82.80.30.36.00.3
21-30 years ago0.0.3.03.06.33.54.50.71.91.31.90.90.0.6.93.07.51.02.41.21.90.90.0.6.24.41.21.24.51.30.0.0.0.3.71.75.12.24.51.06.43.12.50.84.70.90.0.0.0.3.70.3
31-40 years ago0.0.4.03.93.72.62.60.62.21.63.21.20.0.3.02.14.80.81.71.01.10.80.0.3.63.50.0.4.01.30.0.0.50.53.11.50.0.4.20.94.52.60.60.42.90.70.0.0.0.2.50.2
41-50 years ago0.0.0.0.0.0.2.00.51.01.02.71.10.0.1.61.63.40.71.20.80.0.0.0.0.0.2.11.52.10.90.0.0.50.52.91.50.0.6.61.10.0.1.10.54.50.90.0.0.0.2.30.2
over 50 years ago0.0.7.05.01.91.94.00.71.31.33.21.30.0.5.22.613.71.34.11.50.60.61.20.94.83.311.03.45.51.50.0.2.31.32.11.20.0.47.42.34.72.72.70.821.11.80.0.0.30.310.30.4
total0.0.43.39.933.17.040.31.719.74.232.13.20.0.36.75.848.21.832.13.617.32.710.42.535.48.640.75.349.83.23.12.19.12.441.84.412.23.175.71.935.96.017.41.852.12.242.79.13.41.236.20.6
totaln/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago75.62.818.27.739.87.554.61.751.65.355.93.575.016.229.05.422.01.553.93.758.43.578.73.530.38.737.54.945.53.249.56.561.93.937.74.370.84.412.71.532.15.950.32.422.31.988.66.371.72.943.80.6
11-20 years ago14.12.336.39.630.87.318.11.423.64.519.62.90.0.22.55.119.01.420.43.125.33.111.52.734.38.921.34.422.72.733.86.320.33.224.13.815.63.57.41.217.44.519.11.914.31.67.15.117.12.517.90.5
21-30 years ago3.91.33.03.015.64.99.41.08.62.95.41.625.016.214.14.214.21.39.42.25.01.63.81.517.27.27.42.810.11.913.34.43.61.59.32.610.33.05.41.014.24.411.21.58.41.20.0.6.41.68.90.4
31-40 years ago0.90.620.48.08.84.55.80.87.92.97.41.90.0.9.63.310.11.17.62.05.21.63.71.73.63.52.61.55.71.50.0.4.21.66.92.23.31.95.61.07.53.25.31.16.61.10.0.2.61.16.00.3
41-50 years ago2.10.911.16.30.0.4.00.71.91.34.31.40.0.6.23.06.90.92.91.32.81.20.0.0.0.8.83.14.41.41.91.93.91.67.52.30.0.9.11.37.03.05.71.18.11.20.0.0.80.65.10.3
over 50 years ago3.01.111.16.25.03.78.11.06.52.87.41.90.0.18.54.727.81.75.91.83.31.32.31.314.66.322.54.511.72.11.51.56.02.014.53.10.0.59.82.221.85.28.11.340.42.24.34.31.30.718.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862959/329290
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/aless than 10 years ago79.62.413.25.628.46.729.61.446.64.942.83.157.215.812.43.29.20.938.63.547.33.261.63.99.74.825.44.322.72.358.45.853.23.621.63.366.43.93.30.613.63.239.12.16.91.031.58.071.42.728.10.5
11-20 years ago10.21.93.23.215.45.27.70.915.23.68.91.823.813.210.02.96.40.710.62.213.62.213.82.818.86.45.22.16.31.423.34.918.72.88.22.212.52.93.40.75.22.115.31.53.20.79.65.415.52.28.80.3
21-30 years ago4.51.314.86.212.24.84.90.710.53.03.71.20.0.7.52.46.40.711.82.412.42.18.32.35.33.85.92.24.81.27.33.212.52.55.41.87.72.44.50.75.32.110.21.35.60.912.55.86.61.56.70.3
31-40 years ago3.01.06.34.43.32.33.30.61.91.40.90.60.0.3.91.94.90.63.11.34.61.40.60.60.0.4.02.01.20.60.0.2.31.24.51.60.0.2.70.65.22.15.51.03.90.70.0.2.71.03.40.2
41-50 years ago1.50.80.0.1.71.70.90.33.52.01.70.99.59.53.51.83.70.61.10.70.80.60.0.0.0.2.91.61.00.65.13.01.60.93.11.40.0.1.80.55.02.02.40.74.00.80.0.0.80.62.20.2
over 50 years ago1.10.77.04.65.33.66.00.72.41.74.81.49.59.515.13.416.31.12.11.14.31.30.80.812.15.310.02.97.71.51.41.41.71.09.82.30.90.98.91.015.93.35.81.011.71.23.33.30.0.8.10.3
total100.0.44.58.766.36.752.51.679.94.062.93.0100.0.52.44.746.91.467.33.483.12.485.22.745.97.953.34.943.72.895.62.590.12.352.64.087.52.924.61.550.14.678.21.735.31.757.07.797.01.157.20.5
inside perimeterless than 10 years ago0.0.0.0.0.0.3.00.50.0.1.50.70.0.7.52.52.60.50.60.60.40.42.01.17.64.34.32.02.30.90.0.0.0.1.71.00.0.0.40.36.72.31.30.54.50.82.92.90.0.2.10.2
11-20 years ago0.0.3.23.21.71.72.20.50.0.0.40.40.0.1.71.22.40.50.40.40.0.1.20.81.91.90.0.1.20.60.0.0.0.0.60.60.0.0.50.23.21.62.00.62.70.60.0.0.0.1.40.1
21-30 years ago0.0.3.23.22.62.71.00.30.0.0.40.40.0.1.91.41.90.40.90.60.40.40.0.2.52.50.0.1.00.60.0.0.0.0.50.50.0.0.90.30.80.80.90.42.20.60.0.0.0.1.00.1
31-40 years ago0.0.5.33.80.0.0.70.30.0.0.40.40.0.2.71.61.10.30.50.50.40.40.0.0.0.0.70.71.40.70.0.0.0.0.60.60.0.1.10.44.31.90.20.22.20.60.0.0.0.0.90.1
41-50 years ago0.0.0.0.0.0.0.50.20.0.0.0.0.0.1.81.30.40.20.0.0.0.0.0.2.52.51.01.00.40.40.0.0.0.0.70.70.0.1.10.41.81.30.40.32.00.50.0.0.0.0.60.1
over 50 years ago0.0.0.0.0.0.0.60.20.0.0.0.0.0.4.31.93.80.60.0.0.0.0.60.64.43.11.71.30.70.50.0.0.50.50.60.60.0.3.60.74.52.00.60.36.60.90.0.0.0.2.10.2
total0.0.11.65.64.33.18.00.90.0.2.71.00.0.20.03.812.21.02.41.11.30.73.81.518.96.37.72.67.01.50.0.0.50.54.81.70.0.7.60.921.33.85.31.020.21.52.92.90.0.8.10.3
outside perimeterless than 10 years ago0.0.26.47.617.05.519.71.310.03.115.12.30.0.11.13.19.90.915.62.77.41.78.12.121.76.620.23.920.02.24.42.55.41.721.83.36.72.28.51.010.22.87.11.18.51.131.38.02.30.911.30.4
11-20 years ago0.0.8.73.85.63.26.90.83.61.85.31.40.0.6.12.37.70.84.31.52.91.11.81.17.24.26.02.411.01.70.0.0.60.67.82.14.01.84.30.77.32.53.10.75.70.92.92.90.0.5.20.3
21-30 years ago0.0.3.53.45.02.84.90.74.52.04.61.40.0.4.62.05.70.74.71.52.51.00.0.2.52.50.0.5.71.30.0.1.10.85.11.81.81.36.00.90.0.1.40.54.20.85.94.00.40.43.90.2
31-40 years ago0.0.2.22.20.0.2.50.51.11.14.01.20.0.0.0.2.80.52.11.01.20.70.0.0.0.1.71.33.21.00.0.0.40.41.81.00.0.5.00.84.11.81.30.54.20.80.0.0.0.2.40.2
41-50 years ago0.0.0.0.1.71.72.20.50.90.92.30.90.0.2.41.42.40.50.50.50.40.40.0.0.0.1.11.11.60.70.0.1.30.93.01.30.0.5.80.80.90.90.90.45.50.90.0.0.30.32.30.2
over 50 years ago0.0.3.23.20.0.3.20.60.0.3.11.20.0.3.41.712.31.03.11.21.20.71.10.83.92.69.92.97.91.50.0.0.60.63.11.40.0.38.21.76.02.22.70.716.61.40.0.0.0.9.60.3
total0.0.43.98.629.36.339.61.620.14.034.43.00.0.27.64.340.81.430.33.315.72.411.02.435.27.639.04.849.32.84.42.59.42.242.63.912.52.967.71.628.64.216.51.644.61.940.17.93.01.134.70.5
totalless than 10 years ago79.62.439.68.645.47.452.41.656.64.959.43.157.215.831.04.421.71.254.83.555.23.271.73.639.07.849.94.945.12.862.85.858.63.645.23.973.13.712.21.230.54.347.52.119.91.565.78.273.72.741.50.5
11-20 years ago10.21.915.05.822.76.016.81.218.83.914.62.323.813.217.83.716.51.115.32.616.52.416.83.027.97.411.23.118.52.223.34.919.32.916.62.916.53.38.21.015.73.420.41.711.61.212.66.015.52.215.40.4
21-30 years ago4.51.321.57.319.95.910.91.014.93.48.81.80.0.14.13.314.01.017.32.815.32.38.32.310.24.85.92.211.41.87.33.213.62.611.12.59.52.611.41.26.02.212.41.411.91.218.47.07.01.611.60.4
31-40 years ago3.01.013.86.03.32.36.50.83.01.75.21.40.0.6.62.48.80.85.71.76.31.60.60.60.0.6.42.45.81.30.0.2.81.26.92.00.0.8.81.013.63.27.01.110.21.20.0.2.71.06.70.3
41-50 years ago1.50.80.0.3.42.43.60.64.32.24.01.39.59.57.72.56.50.71.60.91.20.70.0.2.52.55.02.22.91.05.13.02.91.36.82.00.0.8.81.07.82.53.60.811.51.20.0.1.10.75.20.3
over 50 years ago1.10.710.25.55.33.69.90.92.41.77.91.89.59.522.84.032.41.45.21.65.51.52.61.320.46.321.74.016.32.11.41.42.91.313.62.70.90.950.71.826.44.19.11.234.91.83.33.30.0.19.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862960/329291
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.17.130.41.544.25.137.73.473.714.58.02.88.10.937.73.750.63.466.04.021.47.19.82.820.52.447.96.556.53.917.23.266.44.53.20.77.72.740.52.26.01.044.99.269.42.927.40.5
11-20 years ago13.92.317.47.420.26.58.51.018.03.913.52.40.0.8.52.96.30.812.82.618.02.711.12.711.85.817.64.08.11.732.36.219.33.112.02.713.53.32.40.65.72.214.91.63.60.84.14.016.62.49.70.4
21-30 years ago3.81.20.0.7.53.63.90.76.42.64.41.526.314.56.42.64.90.76.31.93.01.23.71.59.75.46.82.63.91.213.34.44.11.65.01.85.02.22.70.68.52.88.11.21.80.54.14.06.31.64.70.3
31-40 years ago0.80.615.77.15.03.72.70.65.42.43.61.40.0.7.02.55.20.74.71.63.51.33.61.60.0.2.41.42.20.90.0.3.61.53.41.53.21.84.30.86.22.54.71.04.50.80.0.2.61.03.90.2
41-50 years ago2.10.93.93.90.0.2.30.50.90.91.50.90.0.3.31.94.30.61.71.02.61.10.70.70.0.5.52.41.50.71.91.93.31.53.41.50.0.2.60.62.61.54.71.03.30.70.0.0.80.62.80.2
over 50 years ago2.91.17.75.03.23.26.20.85.02.44.01.40.0.16.93.817.91.22.41.23.61.31.01.08.75.010.63.27.81.61.51.53.61.512.52.80.0.9.81.117.33.85.31.014.21.44.14.00.90.68.80.4
total100.0.47.69.765.07.054.01.779.94.164.93.1100.0.50.15.146.61.665.73.681.32.786.22.851.78.552.85.144.03.096.92.190.52.453.54.288.13.025.01.648.04.978.41.833.51.857.18.496.71.257.30.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.80.60.0.1.60.80.0.6.02.41.80.40.60.60.0.3.11.53.33.31.81.32.71.00.0.0.0.0.60.60.0.0.70.34.92.21.60.64.30.83.13.10.0.1.80.2
11-20 years ago0.0.3.93.90.0.1.70.40.0.0.0.0.0.4.22.12.10.40.60.60.50.50.0.7.64.43.01.81.20.70.0.0.0.1.41.00.0.0.30.23.81.70.60.43.50.70.0.0.0.1.40.1
21-30 years ago0.0.0.0.1.91.91.30.40.0.0.0.0.0.1.01.01.90.40.50.50.0.0.70.70.0.0.0.1.00.60.0.0.0.1.41.00.0.0.40.21.91.31.40.51.90.50.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.40.20.0.0.90.60.0.2.01.41.60.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.40.22.91.70.60.41.80.50.0.0.0.0.80.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.21.21.10.30.0.0.60.60.0.0.0.0.70.71.30.70.0.0.0.0.80.80.0.0.90.42.01.40.40.31.60.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.7.32.73.40.60.0.0.0.0.0.3.13.13.11.81.30.70.0.0.60.61.41.00.0.4.50.85.32.30.60.47.01.00.0.0.0.2.30.2
total0.0.10.76.11.91.97.60.90.0.2.51.00.0.21.74.211.91.02.71.21.50.93.71.614.06.18.52.87.91.70.0.0.60.65.51.90.0.7.31.020.84.15.41.020.21.63.13.10.0.8.00.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.74.818.21.37.42.815.52.50.0.8.52.98.60.914.72.76.71.78.92.310.85.323.34.218.72.31.51.54.41.718.73.34.41.87.11.013.23.56.41.110.81.337.38.52.61.110.50.4
11-20 years ago0.0.13.66.610.64.77.70.96.62.65.21.60.0.6.32.67.10.87.62.06.61.80.0.10.75.12.01.412.12.01.51.51.30.910.92.62.41.44.00.84.72.13.20.85.20.92.62.60.30.35.50.3
21-30 years ago0.0.2.82.86.33.54.40.71.81.31.80.90.0.6.12.45.80.72.31.21.90.90.0.5.43.91.11.14.41.20.0.0.0.3.31.55.02.24.80.85.32.32.30.74.40.80.0.0.0.3.60.2
31-40 years ago0.0.3.93.73.72.62.40.52.11.53.11.10.0.2.21.64.50.71.71.01.10.80.0.3.13.10.0.4.01.20.0.0.50.52.81.40.0.5.60.93.01.70.80.43.30.70.0.0.0.2.70.2
41-50 years ago0.0.0.0.0.0.1.90.50.90.92.61.00.0.1.21.22.70.51.20.80.0.0.0.0.0.2.01.42.30.90.0.0.50.52.61.30.0.6.30.90.0.1.00.44.40.80.0.0.0.2.30.2
over 50 years ago0.0.6.84.91.91.93.90.71.21.24.51.50.0.3.91.912.61.14.01.51.10.81.20.94.32.910.33.26.91.60.0.2.31.32.61.30.0.39.81.95.02.22.50.718.31.60.0.0.30.310.20.4
total0.0.41.79.633.17.038.41.720.14.132.63.10.0.28.24.741.41.531.53.517.22.710.12.434.48.038.65.048.23.03.12.18.92.340.94.211.93.067.71.731.24.716.21.746.32.039.98.63.31.234.70.6
totaln/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.439.87.551.41.751.65.254.83.573.714.522.54.318.61.253.03.757.33.478.03.435.68.534.94.741.93.049.56.560.93.936.54.170.84.311.01.225.94.548.62.321.21.785.36.772.12.939.70.6
11-20 years ago13.92.334.99.330.87.317.91.324.74.518.72.80.0.18.94.115.51.121.13.225.03.011.12.730.18.022.64.321.42.533.86.320.53.224.33.615.93.56.71.014.23.318.81.812.41.36.64.816.92.416.60.5
21-30 years ago3.81.22.82.815.64.99.51.08.22.86.21.726.314.513.53.612.71.19.22.24.91.54.41.615.16.48.02.89.21.713.34.44.11.69.72.510.02.98.01.015.63.711.81.58.11.14.14.06.31.69.20.4
31-40 years ago0.80.619.67.88.84.55.60.87.52.87.51.80.0.11.13.111.31.07.42.05.01.63.61.63.13.12.41.46.51.50.0.4.11.66.12.03.21.810.41.212.13.36.11.19.61.20.0.2.61.07.30.3
41-50 years ago2.10.910.76.10.0.4.50.71.81.34.11.40.0.5.72.58.10.92.91.33.11.30.70.70.0.8.22.95.11.41.91.93.81.66.72.10.0.9.81.14.62.06.01.19.31.20.0.0.80.65.80.3
over 50 years ago2.91.114.56.85.03.711.01.16.22.78.52.00.0.28.14.633.91.56.41.94.61.52.21.316.16.324.04.416.02.31.51.56.52.016.63.10.0.54.11.927.64.58.41.339.42.04.14.01.20.721.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862961/329292
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.17.131.21.644.25.137.93.473.714.59.73.39.11.037.73.750.63.566.04.021.47.110.02.921.02.547.96.556.53.917.23.266.44.53.30.79.53.240.92.26.41.044.99.269.42.928.80.5
11-20 years ago13.92.317.47.420.26.58.61.018.03.913.62.40.0.7.63.07.20.912.82.618.22.711.12.711.85.818.04.18.51.732.36.219.33.112.02.713.53.32.20.67.02.715.11.63.50.84.14.016.62.410.10.4
21-30 years ago3.81.20.0.7.53.63.80.76.42.64.51.526.314.56.52.85.40.86.31.93.01.23.71.59.75.45.92.44.01.213.34.44.11.65.01.85.02.21.90.58.13.17.81.21.90.64.14.06.31.64.60.3
31-40 years ago0.80.615.77.15.03.72.80.65.42.43.61.40.0.4.82.34.60.74.71.63.51.33.61.60.0.2.51.41.90.90.0.3.61.53.41.53.21.82.70.72.71.94.61.03.20.70.0.2.61.03.40.2
41-50 years ago2.10.93.93.90.0.1.70.40.90.91.50.90.0.2.71.92.50.51.71.02.61.20.70.70.0.5.62.51.20.71.91.93.31.53.41.50.0.1.80.53.21.84.71.02.70.70.0.0.80.62.30.2
over 50 years ago2.91.17.75.03.23.24.80.75.02.44.11.40.0.8.03.111.91.12.41.23.11.31.01.08.75.09.83.15.51.41.51.53.61.512.52.80.0.9.21.212.63.75.01.012.51.44.14.00.90.66.90.3
total100.0.47.69.765.07.052.91.779.94.165.23.1100.0.39.35.640.71.765.73.681.12.886.22.851.78.551.85.242.03.096.92.190.52.453.54.288.13.021.11.643.15.578.21.930.11.957.18.496.71.256.00.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.90.60.0.1.60.80.0.7.42.92.10.50.60.60.0.3.11.53.33.31.81.32.81.10.0.0.0.0.60.60.0.0.80.46.12.71.70.64.60.93.13.10.0.1.90.2
11-20 years ago0.0.3.93.90.0.1.70.40.0.0.0.0.0.5.12.52.40.50.60.60.50.50.0.7.64.43.01.81.20.70.0.0.0.1.41.00.0.0.40.34.62.10.60.43.70.80.0.0.0.1.40.2
21-30 years ago0.0.0.0.1.91.91.30.40.0.0.0.0.0.1.21.22.10.50.50.50.0.0.70.70.0.0.0.1.00.60.0.0.0.1.41.00.0.0.50.32.31.61.50.52.00.60.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.50.20.0.0.90.60.0.2.41.71.70.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.50.32.51.80.60.41.70.50.0.0.0.0.70.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.51.51.20.40.0.0.60.60.0.0.0.0.70.71.40.80.0.0.0.0.80.80.0.1.00.42.51.70.40.31.60.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.10.40.0.0.0.0.0.8.93.33.80.60.0.0.0.0.0.3.13.13.11.91.40.80.0.0.60.61.41.00.0.4.80.85.22.60.60.47.21.10.0.0.0.2.30.2
total0.0.10.76.11.91.97.80.90.0.2.51.00.0.26.45.013.31.12.71.21.50.93.71.614.06.18.72.98.21.70.0.0.60.65.51.90.0.7.91.123.24.75.41.020.81.63.13.10.0.8.20.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.74.818.61.37.42.815.52.50.0.10.33.59.61.014.72.76.71.88.92.310.85.323.84.319.42.41.51.54.41.718.73.34.41.87.81.116.34.26.51.111.41.337.38.52.61.111.00.4
11-20 years ago0.0.13.66.610.64.77.80.96.62.65.21.60.0.7.73.18.10.97.62.06.61.80.0.10.75.12.01.512.62.01.51.51.30.910.92.62.41.44.40.84.72.43.30.85.61.02.62.60.30.35.70.3
21-30 years ago0.0.2.82.86.33.54.50.71.81.31.80.90.0.7.43.06.60.82.31.21.90.90.0.5.43.91.11.14.11.20.0.0.0.3.31.55.02.25.30.95.22.62.30.74.60.90.0.0.0.3.70.2
31-40 years ago0.0.3.93.73.72.62.50.52.11.53.11.20.0.2.71.94.90.71.71.01.10.80.0.3.13.10.0.4.11.20.0.0.50.52.81.40.0.5.00.93.72.10.80.43.50.80.0.0.0.2.70.2
41-50 years ago0.0.0.0.0.0.1.90.50.90.92.61.10.0.1.51.53.00.61.20.80.0.0.0.0.0.2.01.52.41.00.0.0.50.52.61.30.0.6.41.00.0.1.00.44.60.90.0.0.0.2.30.2
over 50 years ago0.0.6.84.91.91.93.90.71.21.24.01.40.0.4.72.313.81.24.01.51.10.81.20.94.32.910.53.27.21.60.0.2.31.32.61.30.0.42.12.03.82.22.50.719.41.60.0.0.30.310.30.4
total0.0.41.79.633.17.039.41.720.14.132.33.10.0.34.45.446.11.731.53.517.42.710.12.434.48.039.55.149.83.13.12.18.92.340.94.211.93.071.01.833.75.416.41.749.02.139.98.63.31.235.80.6
totaln/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.439.87.552.71.751.65.255.13.573.714.527.45.120.81.453.03.757.43.478.03.435.68.535.74.743.23.049.56.560.93.936.54.170.84.311.91.331.95.349.12.322.41.785.36.772.12.941.70.6
11-20 years ago13.92.334.99.330.87.318.21.324.74.518.82.80.0.20.34.617.61.321.13.225.33.111.12.730.18.023.04.422.32.633.86.320.53.224.33.615.93.56.91.016.33.919.01.812.81.46.64.816.92.417.30.5
21-30 years ago3.81.22.82.815.64.99.61.08.22.86.31.726.314.515.14.114.11.29.22.24.91.54.41.615.16.47.12.79.21.813.34.44.11.69.72.510.02.97.61.115.64.111.51.58.61.24.14.06.31.69.40.4
31-40 years ago0.80.619.67.88.84.55.70.87.52.87.61.80.0.9.93.211.21.17.42.05.11.63.61.63.13.12.51.46.41.50.0.4.11.66.12.03.21.88.21.18.93.26.01.18.41.20.0.2.61.06.80.3
41-50 years ago2.10.910.76.10.0.4.00.71.81.34.21.40.0.5.62.76.70.82.91.33.21.30.70.70.0.8.32.94.91.41.91.93.81.66.72.10.0.9.21.25.72.56.11.18.81.20.0.0.80.65.30.3
over 50 years ago2.91.114.56.85.03.79.81.06.22.78.12.00.0.21.74.729.51.56.41.94.21.52.21.316.16.323.44.514.02.21.51.56.52.016.63.10.0.56.12.021.64.78.11.239.12.04.14.01.20.719.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862962/329293
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.10.10.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.97.029.61.544.75.037.43.370.114.17.62.58.10.837.83.749.73.465.44.020.56.89.82.718.72.248.86.455.73.916.73.165.74.42.90.67.12.339.42.26.30.945.78.869.02.926.10.5
11-20 years ago13.92.317.47.421.36.58.50.917.53.813.52.40.0.7.22.56.00.712.72.617.52.611.82.713.65.916.03.78.61.631.76.120.43.211.22.613.33.22.20.58.72.514.81.63.40.73.83.816.92.49.50.4
21-30 years ago3.81.20.0.7.23.54.50.76.22.54.31.425.013.88.32.65.80.76.31.83.41.33.61.59.35.28.12.64.81.213.14.44.01.54.71.75.02.23.10.69.22.68.21.22.80.63.83.86.61.65.10.3
31-40 years ago0.80.615.77.14.93.62.90.65.32.33.51.30.0.5.92.14.80.64.71.63.41.33.51.60.0.2.21.32.00.80.0.3.61.53.81.53.21.84.30.75.82.25.01.04.60.80.0.2.51.03.80.2
41-50 years ago2.10.93.93.90.0.2.20.50.90.91.50.90.0.2.81.64.00.61.71.02.51.10.60.60.0.5.02.21.70.81.81.83.31.53.11.40.0.2.80.64.61.84.50.93.80.70.0.0.80.62.80.2
over 50 years ago2.91.17.75.03.13.18.30.96.02.65.91.75.04.720.53.719.61.22.31.24.41.41.01.010.45.110.63.09.31.71.51.53.61.513.82.81.11.114.31.219.53.66.51.117.81.43.83.80.90.610.90.4
total100.0.47.69.766.36.856.11.680.54.066.03.0100.0.52.14.648.21.565.53.680.92.785.92.853.88.451.84.945.12.897.02.190.62.353.44.188.23.029.71.654.84.378.51.838.61.857.07.996.81.158.30.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.60.50.0.1.60.80.0.5.12.11.70.40.60.60.0.3.01.53.23.22.71.52.40.90.0.0.0.1.20.90.0.0.60.34.01.81.60.64.00.72.92.90.0.1.80.2
11-20 years ago0.0.3.93.90.0.1.60.40.0.0.0.0.0.3.51.71.90.40.60.60.50.50.0.7.24.23.31.71.10.60.0.0.0.1.81.10.0.0.30.23.01.40.80.43.10.70.0.0.0.1.30.1
21-30 years ago0.0.0.0.1.81.81.30.40.0.0.0.0.0.0.80.81.80.40.50.50.0.0.60.60.0.0.0.0.90.50.0.0.0.1.81.10.0.0.40.21.51.11.40.51.70.50.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.40.20.0.0.80.60.0.1.71.21.50.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.40.22.31.40.60.31.60.50.0.0.0.0.70.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.01.01.00.30.0.0.60.60.0.0.0.0.60.61.20.70.0.0.0.0.70.70.0.0.80.31.61.10.40.31.50.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.7.22.53.50.60.0.0.50.50.0.3.03.02.81.71.50.70.0.0.60.61.30.90.0.4.00.74.21.90.80.46.60.90.0.0.0.2.30.2
total0.0.10.76.11.81.87.20.80.0.2.41.00.0.19.33.711.41.02.71.21.91.03.61.613.45.99.42.87.31.50.0.0.60.67.02.10.0.6.40.916.73.35.51.018.51.42.92.90.0.7.70.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.34.617.11.27.22.714.92.40.0.7.22.58.20.814.62.76.51.78.72.210.45.122.24.017.12.11.51.54.31.618.13.24.41.86.30.910.62.86.21.19.61.137.78.02.61.09.90.4
11-20 years ago0.0.13.66.610.24.67.30.96.42.55.01.50.0.6.42.46.50.78.12.16.41.70.50.510.34.92.41.410.81.81.51.51.20.910.22.52.41.43.60.73.81.73.10.84.70.82.42.40.30.35.20.3
21-30 years ago0.0.2.82.86.03.44.10.71.81.21.70.90.0.6.02.25.70.72.31.11.80.90.0.5.23.81.91.43.91.10.0.0.0.3.11.45.02.24.20.74.21.92.20.74.00.70.0.0.0.3.40.2
31-40 years ago0.0.3.93.73.62.52.40.52.11.53.01.10.0.1.91.34.50.61.71.01.00.70.0.3.03.00.0.3.91.10.0.0.50.52.61.30.0.5.10.82.41.40.70.43.00.70.0.0.0.2.60.2
41-50 years ago0.0.0.0.0.0.1.70.40.90.92.51.00.0.1.01.02.50.51.20.80.50.50.0.0.0.1.81.32.30.90.0.0.50.52.41.20.0.5.80.80.0.0.90.44.00.70.0.0.0.2.20.2
over 50 years ago0.0.6.84.91.81.84.10.71.21.24.31.40.0.6.22.312.91.04.01.51.00.71.20.84.12.710.53.19.61.70.0.2.31.33.21.40.0.38.81.77.32.42.80.717.61.40.0.0.30.310.70.4
total0.0.41.79.631.96.836.81.619.54.031.53.10.0.28.64.340.41.531.83.517.22.610.52.432.97.838.84.847.62.83.02.18.82.339.64.011.83.063.91.728.44.116.01.642.91.940.18.13.21.134.00.5
totaln/a0.40.40.0.0.0.0.10.10.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.440.27.349.31.651.85.153.93.470.114.119.83.818.01.252.93.756.23.477.13.534.08.234.64.438.32.850.36.560.13.936.13.970.14.39.91.121.73.747.22.219.81.586.36.371.62.837.70.5
11-20 years ago13.92.334.99.331.57.217.41.323.94.418.62.70.0.17.03.614.51.121.43.224.33.012.32.831.17.921.84.020.42.333.36.221.63.223.23.415.73.46.20.915.53.218.71.711.11.26.24.517.22.415.90.4
21-30 years ago3.81.22.82.815.04.89.91.07.92.76.01.625.013.815.03.413.21.09.12.25.21.54.31.614.56.210.02.99.61.713.14.44.01.59.62.49.92.97.71.014.93.311.81.48.51.13.83.86.61.69.50.4
31-40 years ago0.80.619.67.88.44.35.70.87.32.77.31.80.0.9.42.610.80.97.42.04.91.53.51.63.03.02.21.36.11.40.0.4.11.56.42.03.21.89.81.110.62.86.31.19.31.10.0.2.51.07.20.3
41-50 years ago2.10.910.76.10.0.4.30.71.81.24.01.30.0.4.92.17.50.82.91.33.51.30.60.60.0.7.42.65.21.31.81.83.81.66.32.00.0.9.31.06.22.15.81.09.31.10.0.0.80.65.70.3
over 50 years ago2.91.114.56.84.93.613.41.17.22.810.22.15.04.733.84.536.01.46.31.95.91.72.21.317.46.223.94.220.42.31.51.56.42.018.33.21.11.157.11.831.04.210.11.342.01.93.83.81.20.724.00.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862963/329294
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.97.030.61.545.25.137.83.373.714.58.42.78.10.837.83.750.43.465.74.020.96.910.02.819.62.348.86.455.73.917.43.265.74.43.20.78.12.640.22.26.51.047.09.169.32.927.00.5
11-20 years ago13.92.317.47.421.36.58.70.917.73.913.92.50.0.7.92.76.30.812.72.617.92.711.82.713.96.016.33.79.01.731.76.120.43.211.72.713.33.22.40.610.02.915.01.63.60.73.93.916.62.49.80.4
21-30 years ago3.81.20.0.7.23.54.30.76.22.54.41.526.314.59.22.96.00.76.31.83.51.33.71.59.55.37.32.55.01.313.14.44.01.54.91.85.02.23.10.69.72.98.41.22.80.73.93.96.61.65.20.3
31-40 years ago0.80.615.77.14.93.62.90.65.32.33.61.30.0.6.52.44.90.74.71.63.51.33.51.60.0.2.21.32.10.80.0.3.61.54.01.63.21.84.60.85.72.34.91.04.90.90.0.2.51.03.90.2
41-50 years ago2.10.93.93.90.0.2.20.50.90.91.50.90.0.3.11.84.20.61.71.02.51.10.60.60.0.5.12.31.80.81.81.83.31.53.31.50.0.2.70.62.41.44.60.93.90.80.0.0.80.62.80.2
over 50 years ago2.91.17.75.03.13.16.50.84.92.44.01.40.0.16.93.618.71.22.31.23.61.31.01.08.54.810.83.18.81.71.51.53.61.512.22.71.11.110.51.116.03.55.41.014.61.43.93.90.90.69.30.4
total100.0.47.69.766.36.855.11.780.34.165.23.1100.0.52.14.948.11.565.53.681.42.786.42.852.88.451.64.946.22.997.02.190.62.353.44.288.23.026.61.652.04.778.61.836.41.858.78.196.81.158.10.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.70.50.0.1.60.80.0.5.72.31.80.40.60.60.0.3.01.53.23.22.71.62.61.00.0.0.0.0.60.60.0.0.70.34.62.01.60.64.10.83.02.90.0.1.80.2
11-20 years ago0.0.3.93.90.0.1.60.40.0.0.0.0.0.3.91.92.00.40.60.60.50.50.0.7.44.33.41.71.10.60.0.0.0.1.91.10.0.0.30.23.51.60.60.43.30.70.0.0.0.1.30.1
21-30 years ago0.0.0.0.1.81.81.20.40.0.0.0.0.0.0.90.91.90.40.50.50.0.0.60.60.0.0.0.0.90.50.0.0.0.1.31.00.0.0.40.21.71.21.40.51.80.50.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.40.20.0.0.90.60.0.1.91.31.50.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.40.22.71.60.60.31.70.50.0.0.0.0.70.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.11.11.00.30.0.0.60.60.0.0.0.0.60.61.20.70.0.0.0.0.80.80.0.0.90.41.91.30.40.31.60.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.8.02.83.20.50.0.0.0.0.0.3.03.02.81.71.20.70.0.0.60.61.41.00.0.4.30.74.92.10.60.46.61.00.0.0.0.2.20.2
total0.0.10.76.11.81.87.30.90.0.2.51.00.0.21.54.111.41.02.71.21.50.93.61.613.66.09.62.97.41.60.0.0.60.66.02.00.0.7.00.919.23.85.31.019.01.53.02.90.0.7.80.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.34.617.71.37.22.715.32.40.0.8.02.78.50.914.62.76.61.78.82.310.65.222.54.017.92.21.51.54.31.618.23.34.41.86.80.912.23.26.31.110.21.235.98.22.61.010.20.4
11-20 years ago0.0.13.66.610.24.67.40.96.52.65.21.50.0.5.92.46.80.88.12.16.51.80.0.10.55.01.81.311.31.81.51.51.20.910.62.62.41.44.00.74.41.93.20.84.90.92.52.50.30.35.30.3
21-30 years ago0.0.2.82.86.03.44.30.71.81.31.80.90.0.5.72.35.90.72.31.11.80.90.0.5.33.82.01.44.11.20.0.0.0.3.31.55.02.24.60.84.92.12.30.74.30.80.0.0.0.3.50.2
31-40 years ago0.0.3.93.73.62.52.40.52.11.53.01.10.0.2.11.54.30.61.71.01.10.80.0.3.03.00.0.3.71.10.0.0.50.52.71.30.0.5.60.92.81.60.80.43.20.70.0.0.0.2.60.2
41-50 years ago0.0.0.0.0.0.1.80.40.90.92.61.00.0.1.11.12.50.51.20.80.0.0.0.0.0.1.81.32.10.90.0.0.50.52.51.30.0.6.20.90.0.1.00.44.30.80.0.0.0.2.20.2
over 50 years ago0.0.6.84.91.81.83.90.71.21.24.41.50.0.3.61.812.41.04.01.51.10.81.20.84.22.810.73.17.21.60.0.2.31.33.31.50.0.39.21.84.62.12.60.717.71.50.0.0.30.310.20.3
total0.0.41.79.631.96.837.51.619.74.132.33.10.0.26.54.440.51.531.83.517.12.710.02.433.67.938.84.846.42.93.02.18.82.340.64.111.83.066.41.728.84.416.11.644.61.938.38.33.21.134.20.5
totaln/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.440.27.351.01.752.45.154.83.573.714.522.04.118.41.252.93.757.03.477.53.534.78.435.24.540.12.950.36.560.13.936.24.070.14.310.71.224.94.248.12.220.81.685.86.571.92.839.10.6
11-20 years ago13.92.334.99.331.57.217.81.324.24.419.02.80.0.17.83.915.11.121.43.224.93.011.82.731.78.021.54.121.42.433.36.221.63.224.23.615.73.46.71.017.93.618.81.811.81.36.44.616.92.416.50.5
21-30 years ago3.81.22.82.815.04.89.81.08.02.86.21.726.314.515.83.713.81.19.12.25.31.64.31.614.86.39.32.810.01.713.14.44.01.59.52.49.92.98.21.016.33.612.01.58.91.13.93.96.61.69.70.4
31-40 years ago0.80.619.67.88.44.35.60.87.42.77.51.80.0.10.42.910.61.07.42.05.01.63.51.63.03.02.21.36.11.40.0.4.11.56.72.03.21.810.61.211.23.16.21.19.81.20.0.2.51.07.30.3
41-50 years ago2.10.910.76.10.0.4.30.71.81.34.11.40.0.5.42.37.70.82.91.33.11.30.60.60.0.7.52.75.21.41.81.83.81.66.62.00.0.9.71.14.31.95.91.19.81.20.0.0.80.65.70.3
over 50 years ago2.91.114.56.84.93.611.51.16.12.68.42.00.0.28.64.534.31.56.31.94.61.52.21.315.76.224.34.317.22.21.51.56.42.016.93.11.11.154.11.925.54.38.71.338.91.93.93.91.20.721.70.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862964/329295
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.97.031.11.645.25.138.03.373.714.510.03.29.11.037.83.750.13.465.74.020.96.910.32.820.52.448.86.455.73.917.53.265.74.43.30.710.33.340.62.26.91.047.09.169.32.928.30.5
11-20 years ago13.92.317.47.421.36.58.71.017.73.913.92.50.0.7.02.86.70.812.72.618.02.711.82.713.96.016.83.88.71.731.76.120.43.211.82.713.33.22.40.66.72.615.21.63.40.73.93.916.62.410.00.4
21-30 years ago3.81.20.0.7.23.54.30.76.22.54.41.526.314.57.22.96.20.86.31.83.51.33.71.59.55.36.52.54.51.213.14.44.01.54.91.85.02.22.00.57.73.08.01.22.60.73.93.96.61.64.90.3
31-40 years ago0.80.615.77.14.93.62.90.65.32.33.61.30.0.5.42.44.40.74.71.63.51.33.51.60.0.2.31.31.80.80.0.3.61.53.31.53.21.83.40.73.62.14.71.03.80.80.0.2.51.03.50.2
41-50 years ago2.10.93.93.90.0.1.70.40.90.91.50.90.0.3.72.12.60.51.71.02.61.10.60.60.0.5.22.31.90.81.81.83.31.53.31.50.0.2.00.63.11.74.60.93.30.70.0.0.80.62.40.2
over 50 years ago2.91.17.75.03.13.15.30.84.92.44.01.40.0.9.73.213.41.12.31.23.61.31.01.08.54.810.13.06.41.51.51.53.61.512.32.71.11.110.11.212.03.65.11.013.11.43.93.90.90.67.50.3
total100.0.47.69.766.36.854.01.780.34.165.53.1100.0.43.05.442.41.665.53.681.32.786.42.852.88.451.25.043.83.097.02.190.62.353.14.288.23.023.21.643.55.378.41.833.21.858.78.196.81.156.70.6
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.80.60.0.1.60.80.0.6.72.72.10.50.60.60.0.3.01.53.23.22.81.62.71.00.0.0.0.0.60.60.0.0.70.35.82.61.60.64.30.83.02.90.0.1.90.2
11-20 years ago0.0.3.93.90.0.1.70.40.0.0.0.0.0.4.62.32.20.50.60.60.50.50.0.7.44.33.51.81.20.70.0.0.0.1.91.10.0.0.40.34.42.00.60.43.50.70.0.0.0.1.40.1
21-30 years ago0.0.0.0.1.81.81.30.40.0.0.0.0.0.1.11.12.10.50.50.50.0.0.60.60.0.0.0.1.00.60.0.0.0.1.31.00.0.0.50.32.21.61.40.51.90.50.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.40.20.0.0.90.60.0.2.21.51.60.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.40.32.41.70.60.31.60.50.0.0.0.0.70.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.41.41.20.40.0.0.60.60.0.0.0.0.70.71.30.70.0.0.0.0.80.80.0.1.00.42.41.70.40.31.60.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.9.53.33.50.60.0.0.0.0.0.3.03.02.91.71.30.70.0.0.60.61.41.00.0.4.50.85.02.40.60.46.81.00.0.0.0.2.30.2
total0.0.10.76.11.81.87.50.90.0.2.51.00.0.25.54.812.71.12.71.21.50.93.61.613.66.09.92.97.71.60.0.0.60.66.02.00.0.7.51.022.24.55.31.019.81.63.02.90.0.8.00.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.34.618.21.37.22.715.42.50.0.9.53.29.51.014.62.76.71.78.82.310.65.222.24.118.82.31.51.54.31.618.33.34.41.87.41.015.64.16.41.110.71.335.98.22.61.010.70.4
11-20 years ago0.0.13.66.610.24.67.60.96.52.65.21.60.0.7.02.87.70.98.12.16.61.80.0.10.55.01.91.411.81.91.51.51.20.910.72.62.41.44.30.85.62.53.20.85.20.92.52.50.30.35.60.3
21-30 years ago0.0.2.82.86.03.44.40.71.81.31.80.90.0.6.82.76.60.82.31.11.90.90.0.5.33.82.01.44.31.20.0.0.0.3.31.55.02.25.00.95.02.42.30.74.50.80.0.0.0.3.70.2
31-40 years ago0.0.3.93.73.62.52.40.52.11.53.11.10.0.2.51.84.60.71.71.01.10.80.0.3.03.00.0.3.91.20.0.0.50.52.71.40.0.4.80.93.52.00.80.43.40.70.0.0.0.2.60.2
41-50 years ago0.0.0.0.0.0.1.80.50.90.92.61.00.0.1.41.42.90.51.20.80.0.0.0.0.0.1.91.42.20.90.0.0.50.52.51.30.0.6.31.00.0.1.00.44.50.80.0.0.0.2.30.2
over 50 years ago0.0.6.84.91.81.84.00.71.21.24.01.40.0.4.32.113.61.14.01.51.10.81.20.84.22.811.03.27.51.60.0.2.31.33.31.50.0.41.51.94.72.32.70.718.71.60.0.0.30.310.40.4
total0.0.41.79.631.96.838.51.619.74.132.03.10.0.31.55.144.91.631.83.517.22.710.02.433.67.938.94.948.53.03.02.18.82.340.94.111.83.069.31.834.35.316.31.747.12.038.38.33.21.135.20.6
totaln/a0.40.40.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.440.27.352.11.752.45.155.13.573.714.526.24.820.61.352.93.756.83.477.53.534.78.435.24.541.92.950.36.560.13.936.54.070.14.311.51.331.75.248.62.321.91.785.86.571.92.841.00.6
11-20 years ago13.92.334.99.331.57.218.01.324.24.419.12.80.0.18.64.316.71.221.43.225.03.011.82.731.78.022.14.221.72.533.36.221.63.224.43.615.73.47.01.016.73.919.01.812.21.36.44.616.92.417.00.5
21-30 years ago3.81.22.82.815.04.89.91.08.02.86.21.726.314.515.13.914.81.29.12.25.41.64.31.614.86.38.52.89.81.813.14.44.01.59.52.49.92.97.41.014.94.011.81.59.01.23.93.96.61.69.60.4
31-40 years ago0.80.619.67.88.44.35.80.87.42.77.51.80.0.10.13.110.71.07.42.05.01.63.51.63.03.02.31.36.01.40.0.4.11.56.02.03.21.88.61.19.63.36.11.18.91.20.0.2.51.06.80.3
41-50 years ago2.10.910.76.10.0.3.90.61.81.34.11.40.0.6.42.86.70.82.91.33.11.30.60.60.0.7.82.75.41.41.81.83.81.66.62.10.0.9.31.25.52.46.01.19.51.20.0.0.80.65.40.3
over 50 years ago2.91.114.56.84.93.610.41.06.12.68.01.90.0.23.54.730.51.56.31.94.61.52.21.315.76.224.04.315.12.21.51.56.42.017.03.11.11.156.22.021.74.68.41.338.52.03.93.91.20.720.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862965/329296
NFI4
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: canton
unit: %
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.0.0.0.10.10.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.82.82.829.17.129.51.543.75.137.03.370.114.17.32.57.80.837.73.750.23.465.74.021.06.99.62.819.32.347.96.556.53.916.43.166.44.52.90.66.92.439.72.25.90.943.69.069.42.926.40.5
11-20 years ago13.92.317.47.420.26.58.40.917.83.913.32.40.0.7.72.66.00.712.82.617.72.611.12.611.65.717.33.97.61.632.36.219.33.111.52.613.53.32.30.55.92.214.61.63.40.73.93.916.62.49.40.4
21-30 years ago3.81.20.0.7.53.64.10.76.32.54.41.425.013.85.92.34.70.76.31.93.01.23.71.59.55.36.72.53.71.113.34.44.11.64.81.85.02.22.70.68.32.67.91.21.70.53.93.96.31.64.60.3
31-40 years ago0.80.615.77.15.03.72.60.55.42.43.51.30.0.6.32.35.10.74.71.63.41.33.61.60.0.2.41.42.10.80.0.3.61.53.21.43.21.84.30.76.42.44.91.04.30.80.0.2.61.03.80.2
41-50 years ago2.10.93.93.90.0.2.30.50.90.91.50.90.0.3.01.74.10.61.71.02.51.10.70.70.0.5.42.41.40.71.91.93.31.53.21.40.0.2.70.62.31.34.60.93.20.70.0.0.80.62.70.2
over 50 years ago2.91.17.75.03.23.27.50.96.12.65.91.75.04.718.13.718.71.22.41.24.41.51.01.010.65.210.43.18.31.61.51.53.61.513.42.80.0.12.91.220.53.86.21.116.21.43.93.90.90.610.10.4
total100.0.47.69.765.07.054.61.780.24.165.63.1100.0.48.34.846.41.565.73.681.12.785.72.952.78.551.85.142.42.996.92.190.52.452.54.188.13.027.81.650.34.678.11.834.81.855.48.296.71.257.10.5
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.0.0.0.0.2.70.50.0.1.60.80.0.5.52.21.80.40.60.60.0.3.01.53.23.21.81.32.61.00.0.0.0.1.30.90.0.0.60.34.42.01.60.64.30.83.03.00.0.1.80.2
11-20 years ago0.0.3.93.90.0.1.60.40.0.0.0.0.0.3.81.92.00.40.60.60.50.50.0.7.44.32.91.71.10.60.0.0.0.1.91.10.0.0.30.23.31.50.80.43.40.70.0.0.0.1.30.1
21-30 years ago0.0.0.0.1.91.91.30.40.0.0.0.0.0.0.90.91.90.40.50.50.0.0.60.60.0.0.0.0.90.50.0.0.0.1.91.10.0.0.40.21.71.21.40.51.80.50.0.0.0.1.00.1
31-40 years ago0.0.0.0.0.0.0.40.20.0.0.90.60.0.1.81.21.60.41.00.70.50.50.0.0.0.0.0.0.30.30.0.0.0.0.0.0.0.0.40.22.61.50.60.31.70.50.0.0.0.0.70.1
41-50 years ago0.0.6.84.90.0.0.30.20.0.0.0.0.0.1.11.11.00.30.0.0.60.60.0.0.0.0.70.71.20.70.0.0.0.0.70.70.0.0.80.31.81.20.40.31.60.50.0.0.0.0.70.1
over 50 years ago0.0.0.0.0.0.1.00.30.0.0.0.0.0.7.82.73.60.60.0.0.0.0.0.3.13.03.01.81.50.80.0.0.60.61.41.00.0.4.10.74.72.00.80.47.11.00.0.0.0.2.40.2
total0.0.10.76.11.91.97.40.90.0.2.51.00.0.20.94.012.01.02.71.21.50.93.71.613.76.08.42.87.71.60.0.0.60.67.12.10.0.6.60.918.43.65.61.019.91.53.03.00.0.7.90.3
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.0.14.67.010.74.817.71.37.32.715.22.40.0.7.72.78.30.914.72.76.61.78.92.310.65.222.94.218.02.21.51.54.41.718.53.24.41.86.50.911.73.16.31.110.31.239.28.32.61.110.20.4
11-20 years ago0.0.13.66.610.64.77.50.96.62.65.11.50.0.6.92.56.80.87.62.06.41.70.60.610.55.02.61.611.31.81.51.51.30.910.42.52.41.43.80.74.21.93.20.85.00.92.52.50.30.35.40.3
21-30 years ago0.0.2.82.86.33.54.30.71.81.31.80.90.0.6.42.45.60.72.31.21.80.90.0.5.33.81.11.14.11.20.0.0.0.3.21.45.02.24.40.84.72.02.20.74.20.80.0.0.0.3.50.2
31-40 years ago0.0.3.93.73.72.62.50.52.11.53.01.10.0.2.01.44.80.71.71.01.00.70.0.3.13.00.0.4.01.20.0.0.50.52.61.30.0.5.10.82.61.50.80.43.10.70.0.0.0.2.70.2
41-50 years ago0.0.0.0.0.0.1.80.40.90.92.61.00.0.1.11.12.70.51.20.80.50.50.0.0.0.1.91.42.40.90.0.0.50.52.51.20.0.6.00.90.0.1.00.44.20.80.0.0.0.2.30.2
over 50 years ago0.0.6.84.91.91.94.30.71.21.24.41.50.0.6.72.513.41.14.01.51.00.71.20.94.22.811.33.310.01.80.0.2.31.33.21.40.0.39.81.88.12.62.90.818.61.50.0.0.30.311.00.4
total0.0.41.79.633.17.038.01.619.84.132.03.10.0.30.94.541.61.531.53.517.42.710.62.433.68.039.85.049.92.93.12.18.92.340.44.111.93.065.61.731.34.416.31.645.32.041.78.43.31.234.90.5
totaln/a0.40.40.0.0.0.0.10.10.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.20.20.0.0.0.0.0.0.00.0
less than 10 years ago76.02.817.57.439.87.549.91.751.05.253.83.470.114.120.54.017.91.253.03.756.73.477.63.434.88.334.24.639.82.949.56.560.93.936.24.070.84.310.11.122.94.047.62.220.51.685.76.572.12.938.40.6
11-20 years ago13.92.334.99.330.87.317.61.324.44.518.42.70.0.18.43.914.91.121.13.224.63.011.62.729.57.922.84.320.12.433.86.320.53.223.73.515.93.56.30.913.43.118.61.711.81.36.44.616.92.416.10.5
21-30 years ago3.81.22.82.815.64.99.61.08.12.86.11.725.013.813.23.412.21.09.22.24.81.54.41.614.86.37.82.78.71.613.34.44.11.69.82.410.02.97.51.014.63.411.61.47.71.03.93.96.31.69.00.4
31-40 years ago0.80.619.67.88.84.55.50.87.42.77.41.80.0.10.22.811.41.07.42.04.91.53.61.63.13.02.41.46.41.40.0.4.11.65.81.93.21.89.81.111.63.16.21.19.21.10.0.2.61.07.30.3
41-50 years ago2.10.910.76.10.0.4.40.71.81.34.11.30.0.5.22.37.90.82.91.33.61.30.70.70.0.8.02.85.11.31.91.93.81.66.42.00.0.9.51.14.11.85.91.18.91.10.0.0.80.65.70.3
over 50 years ago2.91.114.56.85.03.712.81.17.32.910.32.25.04.732.54.735.71.56.41.95.51.62.21.317.86.424.84.419.92.41.51.56.52.018.03.20.0.56.81.833.34.59.91.341.92.03.93.91.20.723.50.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 10.07.2020 #862966/329297
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
n/aless than 10 years ago59.91.120.51.320.41.76.51.113.41.43.70.831.70.6
11-20 years ago13.70.87.80.97.21.12.70.77.61.11.30.58.80.4
21-30 years ago7.60.65.20.75.00.92.50.75.80.91.50.55.50.3
31-40 years ago2.50.33.50.62.70.71.20.52.60.61.00.42.40.2
41-50 years ago1.10.21.30.41.90.62.30.71.60.51.20.41.40.2
over 50 years ago1.50.35.40.75.81.09.61.310.71.27.71.15.20.3
total86.40.743.71.643.12.024.81.941.72.016.31.555.10.6
inside perimeterless than 10 years ago0.30.14.50.74.20.85.71.03.70.80.60.32.40.2
11-20 years ago0.40.12.20.52.00.62.90.73.40.70.90.41.50.2
21-30 years ago0.30.11.20.40.80.42.20.61.50.51.10.40.90.1
31-40 years ago0.00.00.80.32.40.62.20.71.90.51.00.41.00.1
41-50 years ago0.00.00.70.30.90.42.50.70.50.31.10.40.70.1
over 50 years ago0.10.11.10.31.80.67.71.23.00.74.90.92.10.2
total1.10.210.61.012.21.423.11.814.01.49.71.28.50.4
outside perimeterless than 10 years ago6.80.522.21.420.91.710.01.313.81.47.61.112.30.4
11-20 years ago2.00.37.90.99.51.27.21.210.81.35.40.95.80.3
21-30 years ago1.60.35.00.75.71.04.10.95.30.95.91.03.80.3
31-40 years ago0.60.23.80.62.30.64.10.93.10.75.00.92.50.2
41-50 years ago0.50.22.20.52.10.66.91.12.40.66.01.02.40.2
over 50 years ago0.90.24.70.74.10.820.01.89.01.244.12.09.70.4
total12.50.745.71.644.72.052.12.244.32.074.01.836.40.6
totalless than 10 years ago67.01.047.21.645.62.122.11.930.91.912.01.346.40.6
11-20 years ago16.10.818.01.318.81.612.81.521.71.77.71.116.10.5
21-30 years ago9.50.611.31.111.51.38.71.312.51.38.41.110.20.4
31-40 years ago3.20.48.10.97.51.17.51.27.51.17.01.05.80.3
41-50 years ago1.70.34.20.74.80.911.61.44.50.88.31.14.50.3
over 50 years ago2.50.311.21.011.81.337.32.222.81.756.72.016.90.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862967/329298
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
n/aless than 10 years ago59.51.020.01.319.81.67.41.112.91.33.10.630.10.5
11-20 years ago14.00.78.30.98.01.12.90.78.21.02.20.59.00.4
21-30 years ago7.80.65.20.75.30.94.50.97.01.02.90.66.00.3
31-40 years ago2.60.33.80.62.60.62.30.63.30.71.90.52.80.2
41-50 years ago1.10.21.70.41.70.52.90.71.60.51.50.41.60.2
over 50 years ago1.70.37.00.87.61.010.21.311.31.29.81.16.40.3
total86.60.746.01.645.02.030.11.944.51.821.31.555.80.6
inside perimeterless than 10 years ago0.30.14.20.63.80.85.00.93.20.70.50.32.20.2
11-20 years ago0.40.12.30.51.80.52.70.73.10.70.90.31.50.2
21-30 years ago0.20.11.10.30.80.32.40.61.50.51.20.40.90.1
31-40 years ago0.00.00.80.32.30.61.90.61.60.51.10.40.90.1
41-50 years ago0.00.00.70.20.90.42.20.60.40.21.00.40.60.1
over 50 years ago0.10.11.10.31.80.56.71.03.40.74.30.72.10.2
total1.10.210.10.911.41.320.81.613.31.39.01.08.30.3
outside perimeterless than 10 years ago6.70.520.91.319.71.69.01.213.01.37.51.011.70.4
11-20 years ago2.00.37.70.89.11.16.61.09.71.15.50.85.60.3
21-30 years ago1.60.34.80.75.30.94.60.95.70.96.70.94.00.3
31-40 years ago0.60.23.50.62.60.64.10.82.60.64.70.82.40.2
41-50 years ago0.50.22.20.52.20.66.21.02.20.55.50.82.40.2
over 50 years ago0.90.24.70.74.70.818.61.69.01.139.91.89.80.4
total12.20.743.91.643.51.949.02.142.21.869.71.635.90.6
totalless than 10 years ago66.51.045.21.643.32.021.41.729.11.711.01.144.00.6
11-20 years ago16.30.818.31.218.91.512.21.421.01.58.61.016.10.5
21-30 years ago9.60.611.11.011.41.211.51.314.31.310.71.111.00.4
31-40 years ago3.20.48.10.97.51.08.31.27.51.07.71.06.10.3
41-50 years ago1.70.34.50.74.80.811.21.34.20.78.01.04.60.3
over 50 years ago2.70.412.91.114.11.435.42.023.81.654.01.818.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862968/329299
NFI3
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
n/aless than 10 years ago58.61.019.31.219.61.57.21.012.21.12.90.629.40.5
11-20 years ago14.00.77.80.87.51.03.40.78.31.02.10.58.90.3
21-30 years ago8.40.65.40.75.50.84.60.87.20.93.00.66.30.3
31-40 years ago2.50.33.70.63.10.63.30.73.60.71.90.52.90.2
41-50 years ago1.20.21.60.41.80.52.80.71.80.51.40.41.60.2
over 50 years ago1.90.36.90.77.91.010.81.211.71.110.11.06.60.3
total86.70.744.61.545.31.832.11.844.91.721.41.455.80.5
inside perimeterless than 10 years ago0.30.14.10.63.70.74.70.83.50.60.50.22.20.2
11-20 years ago0.30.12.60.51.70.52.90.72.80.60.80.31.50.1
21-30 years ago0.30.11.20.31.10.42.30.61.90.51.40.41.10.1
31-40 years ago0.00.00.80.32.10.52.00.51.40.41.10.40.90.1
41-50 years ago0.00.00.70.20.80.32.10.60.40.21.00.30.60.1
over 50 years ago0.10.11.10.31.70.56.91.03.60.74.50.72.10.2
total1.10.210.50.911.11.120.81.613.61.29.21.08.40.3
outside perimeterless than 10 years ago6.80.521.21.219.81.59.01.112.71.28.40.911.90.4
11-20 years ago2.00.37.80.89.21.16.00.99.41.04.90.75.50.3
21-30 years ago1.50.34.90.65.10.84.40.85.70.86.40.84.00.2
31-40 years ago0.60.23.50.52.40.64.40.82.70.64.70.72.50.2
41-50 years ago0.50.12.50.52.00.55.80.92.10.55.50.82.40.2
over 50 years ago0.90.25.00.65.10.817.51.59.11.039.41.79.70.3
total12.20.744.91.543.61.847.11.941.51.769.31.535.90.5
totalless than 10 years ago65.71.044.51.543.11.820.91.628.41.611.81.143.50.6
11-20 years ago16.30.818.21.118.31.412.21.320.41.47.80.915.80.4
21-30 years ago10.20.611.51.011.71.211.41.214.71.210.81.111.40.4
31-40 years ago3.20.48.00.87.61.09.71.27.70.97.70.96.30.3
41-50 years ago1.70.34.80.64.60.810.71.24.20.77.90.94.60.3
over 50 years ago2.90.313.01.014.71.335.21.924.41.554.01.718.40.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 18.06.2020 #862969/329300
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