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NFI4
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
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 SilvaProtectstand stability %± %± %± %± %± %±
n/acritical1.40.42.70.53.10.53.60.41.70.52.70.2
less stable26.81.438.51.422.61.317.40.810.71.123.00.5
stable53.51.650.01.524.41.319.50.911.31.130.70.6
total81.71.291.20.850.11.540.41.123.71.556.50.6
inside perimetercritical0.0.0.0.0.20.11.60.30.50.20.60.1
less stable0.70.30.0.3.50.58.40.64.40.74.10.2
stable1.70.40.0.2.10.46.90.63.60.63.40.2
total2.40.50.0.5.80.716.80.88.51.08.10.3
outside perimetercritical0.20.10.20.13.00.53.40.45.10.82.40.2
less stable6.10.74.60.621.71.220.00.939.71.717.70.5
stable9.70.94.10.619.51.219.40.923.01.515.40.5
total16.01.18.80.844.11.542.81.167.81.635.40.6
totalcritical1.60.42.80.56.30.78.50.67.30.95.70.3
less stable33.51.543.11.547.81.545.81.154.81.744.80.6
stable64.91.554.01.545.91.545.71.138.01.749.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853308/319639
NFI2
forest area
avalanches SilvaProtect · stand stability
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
state1993/95
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.7.85.71.20.50.0.0.0.0.0.0.0.0.70.50.0.1.91.11.21.20.0.4.43.04.12.00.0.0.0.7.43.21.41.40.0.0.0.0.30.32.61.50.0.0.0.1.10.2
critical3.81.30.0.13.56.66.21.22.92.16.72.20.0.15.87.47.21.61.81.312.22.62.61.517.79.44.23.08.22.81.61.63.61.69.83.82.91.87.32.930.89.33.61.012.02.95.15.03.01.15.90.4
less stable36.93.191.08.748.510.241.92.421.04.949.04.612.512.439.710.045.33.040.64.759.83.926.14.022.311.754.77.546.35.025.45.935.04.037.56.038.74.939.15.426.18.540.52.737.54.444.513.137.63.240.40.9
stable58.83.29.08.730.29.450.72.576.15.144.34.687.512.444.510.146.83.057.64.826.13.470.14.260.013.436.77.241.35.073.16.161.54.145.46.256.94.753.75.543.09.855.62.747.94.550.412.759.33.252.60.9
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.
inside perimetern/a..0.0.0.0.1.61.6..0.0...9.36.30.0.0.0.0.0.0.0.23.620.60.0.4.54.4..0.0.14.313.2..0.0.4.94.80.0.2.71.50.0...2.20.7
critical..0.0.0.0.7.73.3..16.315.1..4.84.712.53.218.717.5100.0.0.0.37.621.80.0.16.78.8..0.0.28.617.5..7.24.043.811.211.76.48.52.60.0...12.11.5
less stable..100.0.100.0.62.46.1..65.419.7..62.510.651.84.944.021.70.0.17.616.338.822.887.012.048.011.0..0.0.44.919.2..44.97.844.611.349.510.053.14.60.0...52.82.3
stable..0.0.0.0.28.35.7..18.316.3..23.59.335.74.637.321.50.0.82.416.30.0.13.012.030.810.3..100.0.12.211.6..48.07.86.86.538.89.735.74.4100.0...32.92.2
total..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.
outside perimetern/a..0.0.0.0.0.60.40.0.0.0...0.0.2.90.90.0.0.0.0.0.0.0.1.81.82.61.50.0.0.0.0.0.0.0.0.80.55.15.02.61.81.20.70.0.0.0.1.30.3
critical..0.0.0.0.5.31.20.0.8.93.5..18.77.79.91.61.81.815.36.40.0.17.511.60.0.5.82.10.0.0.0.11.54.55.75.67.51.417.48.06.93.09.11.86.46.30.0.7.60.6
less stable..71.913.549.013.245.72.822.410.154.16.2..64.49.543.72.643.96.755.38.641.212.548.214.974.67.256.24.5100.0.40.713.340.26.844.513.948.52.664.510.141.65.647.03.124.312.775.015.447.81.1
stable..28.113.551.013.248.42.877.610.137.06.1..17.07.643.52.654.26.729.47.958.812.534.414.623.57.035.44.30.0.59.313.348.36.949.813.943.12.613.07.249.05.742.73.069.313.225.015.443.21.1
total..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.
totaln/a0.40.40.0.5.13.71.00.40.0.0.0.0.0.2.61.81.70.50.0.1.50.91.01.03.83.72.91.73.41.20.0.0.0.4.71.91.21.20.60.43.12.20.70.41.90.60.0.0.0.1.30.2
critical3.81.30.0.8.84.55.90.82.31.77.71.80.0.13.84.19.31.12.31.114.22.52.21.320.87.32.11.57.81.81.51.53.21.411.52.93.31.77.51.229.55.64.61.09.71.35.53.72.91.17.10.3
less stable36.93.183.77.449.68.045.01.821.34.451.13.712.512.455.16.045.51.841.83.858.13.527.33.834.18.865.85.051.43.227.66.035.33.939.04.439.44.646.72.244.96.041.22.346.12.234.48.838.93.144.10.7
stable58.83.216.37.436.57.748.01.876.44.641.33.687.512.428.55.543.61.855.93.826.33.169.43.941.49.229.14.837.43.170.86.161.53.944.84.556.14.545.22.222.55.153.52.442.42.260.18.558.23.247.50.7
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, 11.07.2020 #853309/319640
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.7.85.71.20.50.0.0.0.0.0.0.0.0.90.50.0.1.81.01.21.10.0.4.02.83.61.70.0.0.0.7.03.01.41.40.0.0.0.0.30.32.21.30.0.0.0.1.00.2
critical3.71.20.0.13.56.66.11.12.82.06.42.10.0.13.66.48.61.61.81.212.42.52.51.514.68.03.92.88.22.61.61.64.11.610.63.82.91.77.52.628.58.33.61.010.32.55.15.03.31.26.10.4
less stable36.33.191.08.748.510.241.72.422.95.048.34.511.111.148.19.544.62.840.14.658.73.825.23.918.49.854.37.244.94.725.45.935.34.035.45.838.14.838.34.828.08.040.02.539.14.144.513.137.13.140.10.9
stable59.63.19.08.730.29.451.02.474.35.245.34.588.911.138.39.245.82.858.24.727.23.471.14.166.911.637.86.943.34.773.16.160.64.147.06.057.64.754.24.943.49.156.22.648.54.250.412.759.63.252.80.9
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.
inside perimetern/a..0.0.0.0.1.61.6..0.0...8.96.00.0.0.0.0.0.0.0.23.620.60.0.4.54.4..0.0.11.510.7..0.0.4.64.50.0.2.61.50.0...2.20.7
critical..0.0.0.0.7.63.3..16.315.1..4.64.511.93.118.717.5100.0.0.0.37.621.80.0.16.78.8..0.0.23.014.5..6.73.741.410.810.96.08.22.50.0...11.71.5
less stable..100.0.100.0.61.46.1..65.419.7..59.610.552.24.744.021.70.0.17.616.338.822.887.012.048.011.0..0.0.36.116.5..41.97.547.611.149.39.753.64.50.0...52.32.3
stable..0.0.0.0.29.45.7..18.316.3..27.09.535.94.537.321.50.0.82.416.30.0.13.012.030.810.3..100.0.29.414.6..51.47.66.46.139.89.435.64.3100.0...33.92.2
total..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.
outside perimetern/a..0.0.0.0.0.60.40.0.0.0...0.0.2.60.80.0.0.0.0.0.0.0.1.81.83.21.50.0.0.0.0.0.0.0.0.80.44.64.52.51.81.50.80.0.0.0.1.40.3
critical..0.0.0.0.5.41.20.0.8.43.3..18.07.59.91.51.81.814.96.20.0.17.511.60.0.6.62.10.0.0.0.10.74.25.75.67.51.319.07.86.62.98.71.713.19.10.0.7.70.6
less stable..71.913.549.013.246.82.727.010.552.36.1..65.69.342.52.543.16.653.88.538.412.048.214.975.47.054.54.3100.0.40.713.342.86.644.513.948.82.561.49.641.35.546.03.022.611.975.015.447.51.1
stable..28.113.551.013.247.32.773.010.539.25.9..16.47.444.92.555.16.631.48.061.612.034.414.622.86.935.74.10.0.59.313.346.56.749.813.942.92.515.07.149.65.643.73.064.313.425.015.443.51.1
total..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.
totaln/a0.40.40.0.5.13.71.00.30.0.0.0.0.0.2.41.71.60.40.0.1.40.81.01.03.43.42.81.63.41.10.0.0.0.4.31.71.21.20.60.32.71.90.60.41.90.60.0.0.0.1.20.1
critical3.71.20.0.8.84.55.90.82.31.67.31.80.0.12.73.89.71.02.21.114.12.42.21.318.86.72.01.58.11.71.51.53.71.511.42.83.21.77.51.128.45.24.51.09.01.28.54.83.21.17.10.3
less stable36.33.183.77.449.68.045.21.723.74.550.03.611.111.157.35.844.61.741.13.857.03.526.33.630.98.165.64.949.93.127.66.035.63.838.54.238.94.646.32.144.55.640.72.345.82.133.38.438.33.143.80.7
stable59.63.116.37.436.57.747.91.774.04.742.73.588.911.127.65.244.11.756.63.827.53.170.53.846.88.829.74.738.63.070.86.160.73.845.74.356.74.545.72.124.44.954.22.343.22.158.28.658.53.147.90.7
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, 11.07.2020 #853310/319641
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZH Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.40.0.7.35.31.00.50.0.0.0.0.0.2.42.41.10.60.0.1.60.91.01.05.55.53.72.63.21.60.0.0.0.6.12.61.41.40.0.2.82.80.20.21.91.10.0.0.0.1.00.2
critical3.51.10.0.12.36.26.01.12.71.96.31.90.0.11.15.49.11.51.61.112.72.42.21.315.97.33.52.58.22.51.51.53.61.412.13.82.71.76.72.324.56.83.10.910.72.44.03.93.01.16.00.4
less stable37.13.092.87.149.810.041.72.225.24.947.94.29.19.045.08.645.72.642.64.558.63.523.93.615.88.553.76.845.04.429.55.937.93.837.25.536.84.738.04.529.87.240.32.439.13.841.511.636.72.940.60.8
stable59.13.07.27.130.59.251.32.372.15.045.84.290.99.041.48.544.12.655.84.527.03.272.93.862.811.039.26.643.54.469.06.058.53.944.65.659.14.555.34.643.07.956.32.448.33.954.511.660.32.952.40.8
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.
inside perimetern/a..0.0.0.0.1.51.5..0.0...7.75.30.0.0.0.0.0.0.0.19.617.50.0.8.25.6..0.0.10.59.9..0.0.4.14.00.0.2.31.30.0...2.10.6
critical..0.0.0.0.7.03.0..23.614.8..3.83.812.53.018.117.0100.0.0.0.30.418.90.0.18.78.3..0.0.20.613.3..7.93.847.510.010.55.88.82.40.0...12.31.4
less stable..100.0.100.0.59.15.9..47.217.7..65.29.552.44.545.722.00.0.30.118.350.021.581.112.446.310.0..0.0.43.816.1..41.87.143.410.047.19.554.94.30.0...52.32.2
stable..0.0.0.0.32.55.6..29.216.8..23.38.435.14.336.221.20.0.69.918.30.0.18.912.426.99.2..100.0.25.012.9..50.37.25.04.842.49.434.14.0100.0...33.32.0
total..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.
outside perimetern/a..0.0.0.0.0.60.40.0.0.0...3.13.12.30.70.0.0.0.0.0.0.0.1.71.74.51.80.0.0.0.0.0.0.0.0.70.44.03.92.11.51.70.70.0.0.0.1.40.2
critical..0.0.0.0.6.11.20.0.7.93.1..15.86.610.31.41.61.514.76.10.0.29.912.72.22.25.91.90.0.0.0.9.33.75.04.96.91.217.47.17.52.79.31.711.98.30.0.7.80.6
less stable..77.811.159.911.447.42.623.99.555.65.8..63.68.943.32.343.76.254.48.434.411.340.913.375.96.551.34.1100.0.35.812.140.16.147.513.648.62.460.69.342.25.043.82.828.612.066.015.947.21.0
stable..22.211.140.111.445.92.676.19.536.55.6..17.47.144.12.354.76.230.97.965.611.329.213.020.26.138.33.90.0.64.212.150.76.247.513.643.92.418.17.448.35.145.22.859.413.134.015.943.61.0
total..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.
totaln/a0.40.40.0.4.53.30.90.30.0.0.0.0.0.4.12.01.60.40.0.1.40.80.90.95.94.02.51.54.21.20.0.0.0.3.81.51.21.20.50.33.52.00.60.31.90.60.0.0.0.1.30.1
critical3.51.10.0.7.63.96.10.82.21.67.41.70.0.10.83.310.11.02.01.014.12.31.91.122.56.42.71.67.91.61.41.43.31.311.42.63.01.66.91.028.04.74.30.99.61.27.24.12.91.07.20.3
less stable37.13.086.66.254.37.545.31.625.04.450.33.49.19.056.85.345.41.643.13.657.23.325.33.428.97.265.04.648.22.932.55.937.53.638.84.038.04.546.02.042.75.041.02.145.02.034.97.737.72.943.90.6
stable59.13.013.46.233.67.147.71.672.94.542.43.390.99.028.34.942.91.655.03.627.32.972.03.542.78.129.84.439.62.866.16.059.23.746.04.057.74.446.62.025.84.654.22.143.62.057.98.159.42.947.60.6
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, 11.07.2020 #853311/319642
NFI1
forest area
avalanches SilvaProtect · stand stability
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
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a3.50.47.21.38.01.77.42.43.61.25.02.24.60.4
critical5.50.56.51.26.81.67.72.56.31.56.12.45.90.4
less stable44.21.251.22.543.93.137.44.444.33.144.04.944.90.9
stable46.81.235.12.441.23.147.54.545.73.144.94.944.60.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.5.92.35.82.82.61.52.31.60.0.3.30.8
critical0.0.6.32.58.73.46.82.35.82.53.22.26.01.1
less stable34.79.957.25.054.45.940.74.556.25.465.96.152.42.3
stable65.39.930.74.731.15.549.94.635.75.230.95.938.42.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.31.44.71.05.01.45.01.43.71.22.80.84.30.5
critical4.21.26.81.27.31.67.61.610.31.93.00.86.20.6
less stable35.53.052.02.452.83.136.83.046.73.047.22.346.01.1
stable54.93.136.52.434.82.950.53.139.23.046.92.343.51.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a3.70.45.90.86.41.05.01.03.50.72.90.74.40.3
critical5.30.56.60.87.31.17.51.28.01.13.60.76.10.3
less stable43.01.152.21.749.22.137.82.247.12.048.52.045.90.7
stable48.01.135.31.637.12.049.62.241.42.045.12.043.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853312/319643
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a3.90.47.51.311.01.910.32.64.51.36.92.45.50.4
critical5.40.56.21.27.21.67.72.36.31.56.22.35.90.4
less stable43.71.250.62.442.03.034.64.144.03.042.74.644.10.9
stable47.01.235.72.339.93.047.44.345.23.044.24.644.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.6.62.45.72.73.51.73.41.90.0.3.90.9
critical0.0.6.02.48.43.36.82.35.62.53.12.25.81.1
less stable37.39.955.94.955.75.840.34.556.15.366.56.052.42.3
stable62.79.931.54.630.25.449.44.634.95.130.45.837.92.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.31.45.01.05.61.45.21.44.71.33.50.84.70.5
critical4.21.27.21.27.81.67.41.610.11.82.90.86.30.5
less stable35.12.951.82.453.03.036.32.945.73.047.42.345.81.1
stable55.43.136.02.333.62.951.13.039.52.946.12.343.11.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.00.46.30.87.91.16.21.14.40.83.80.75.10.3
critical5.20.56.60.87.61.17.31.17.81.13.50.76.00.3
less stable42.61.151.71.648.52.036.72.146.42.048.42.045.40.7
stable48.21.135.41.535.91.949.82.241.32.044.31.943.50.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853313/319644
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a3.70.37.70.911.31.411.81.94.70.96.21.65.50.3
critical4.40.36.30.87.41.19.91.77.81.14.41.45.50.3
less stable43.80.848.51.743.22.230.42.743.12.142.93.343.70.6
stable48.10.837.41.738.22.147.82.944.52.146.53.345.40.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.5.31.56.62.15.11.43.21.32.11.24.30.7
critical0.0.12.22.311.52.76.21.58.12.04.81.88.10.9
less stable44.07.854.53.553.94.238.53.153.23.755.34.149.71.6
stable56.07.828.13.128.03.850.23.235.53.537.84.037.91.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a4.91.04.80.76.81.15.51.04.50.93.00.64.70.3
critical3.40.87.20.97.51.16.51.19.41.33.60.66.10.4
less stable38.12.255.11.753.12.135.52.248.32.150.61.648.20.8
stable53.62.232.91.632.52.052.62.337.72.142.81.640.90.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a3.80.36.10.58.70.87.20.84.40.63.40.55.10.2
critical4.20.37.30.67.90.87.40.88.50.83.90.55.90.2
less stable43.10.852.11.149.01.434.81.546.81.449.81.445.80.5
stable48.80.834.41.134.41.450.61.640.31.442.91.443.10.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853314/319645
NFI2
forest area
avalanches SilvaProtect · stand stability
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
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a0.40.21.80.74.41.32.61.50.80.50.0.1.00.2
critical3.40.410.91.611.32.012.02.97.31.66.92.56.00.4
less stable38.41.146.52.545.63.237.54.447.13.135.74.840.80.9
stable57.81.240.82.538.63.147.94.544.83.157.54.952.20.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.2.11.57.23.12.71.50.0.0.0.2.30.7
critical8.85.913.03.419.94.78.52.613.33.78.33.612.11.5
less stable30.79.761.54.952.95.953.14.653.85.444.06.452.72.3
stable60.510.223.44.320.04.835.74.432.95.047.76.432.92.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.1.20.51.60.81.20.73.41.10.90.41.30.3
critical2.30.97.31.38.91.89.11.810.71.97.41.27.60.6
less stable44.13.149.62.454.13.147.03.147.43.045.52.347.81.1
stable53.63.142.02.435.53.042.73.038.53.046.22.343.31.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.40.11.50.43.50.81.90.61.80.50.70.31.30.2
critical3.40.49.51.011.31.39.71.39.61.27.41.17.10.3
less stable39.01.149.51.750.32.146.12.248.22.043.82.044.40.7
stable57.31.139.51.635.02.042.42.240.32.048.22.047.30.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853315/319646
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a0.40.11.60.64.01.22.21.31.00.60.0.1.00.2
critical3.50.410.31.411.31.910.32.58.31.68.42.46.10.4
less stable37.81.146.62.445.23.039.14.146.92.934.24.240.50.9
stable58.31.141.52.439.52.948.54.243.92.957.44.452.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.2.01.46.93.02.61.50.0.0.0.2.20.7
critical8.85.912.63.318.84.58.22.512.73.67.83.411.71.5
less stable30.79.760.74.951.55.853.64.554.85.341.46.152.22.3
stable60.510.224.74.322.94.935.64.332.54.950.96.233.92.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.1.20.51.80.81.50.83.11.00.80.41.30.3
critical2.30.97.21.29.71.88.71.711.01.87.21.27.70.6
less stable44.03.049.92.453.43.046.03.045.92.945.62.247.51.1
stable53.83.141.82.435.22.843.73.040.02.846.42.243.51.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.30.11.40.43.30.71.90.61.80.50.60.31.20.1
critical3.40.49.20.911.51.39.01.210.01.17.51.07.10.3
less stable38.51.149.51.649.62.045.82.147.51.943.01.944.00.7
stable57.81.139.91.635.61.943.22.140.71.948.81.947.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853316/319647
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %±
n/an/a0.40.11.60.64.11.11.91.11.20.60.0.1.00.2
critical3.40.410.01.310.91.710.72.48.91.67.42.16.00.4
less stable38.31.146.52.245.12.839.13.847.42.735.44.040.90.8
stable58.01.141.92.239.92.748.33.942.52.757.24.152.10.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.1.91.37.12.82.31.30.0.0.0.2.10.6
critical8.05.512.33.120.94.48.82.413.73.58.33.312.31.4
less stable32.39.458.14.752.15.354.94.354.45.042.15.852.22.2
stable59.79.827.74.219.94.334.14.032.04.749.65.933.42.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.1.00.52.50.91.70.72.70.90.70.41.40.2
critical2.30.98.01.28.81.69.31.711.71.76.51.17.80.6
less stable43.72.950.92.352.32.843.82.846.92.745.52.147.41.0
stable53.92.940.02.236.52.745.22.838.62.647.32.143.51.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.30.11.40.43.70.71.90.61.70.50.50.31.20.1
critical3.30.49.30.911.11.29.61.210.81.16.90.97.20.3
less stable38.91.049.61.549.11.845.02.048.11.843.21.844.20.6
stable57.51.039.71.536.01.843.62.039.41.849.41.847.40.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853317/319648
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.30.76.61.85.01.53.51.03.40.812.03.84.81.410.22.411.63.315.65.08.94.310.32.64.51.36.92.45.50.4
critical3.20.74.41.45.71.68.51.66.21.07.93.46.01.55.51.86.12.411.64.48.84.27.72.36.31.56.22.35.90.4
less stable37.92.042.43.535.83.352.92.848.02.242.15.755.13.242.53.842.75.048.96.731.27.334.64.144.03.042.74.643.90.9
stable55.72.046.73.553.63.535.12.742.32.238.05.734.13.041.83.839.75.023.95.951.27.847.44.345.23.044.24.644.70.9
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.
inside perimetern/a0.0.....0.0...13.17.13.23.20.0.5.93.34.14.09.85.53.51.73.41.90.0.3.90.9
critical0.0.....0.0...9.46.36.54.515.29.93.72.67.14.95.73.96.82.35.62.53.12.25.71.1
less stable34.710.0....100.0...35.310.263.89.241.413.262.26.766.59.250.99.040.34.556.15.366.56.052.52.3
stable65.310.0....0.0...42.310.426.58.543.413.428.16.222.28.133.68.749.44.634.95.130.45.837.92.2
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a7.12.29.66.40.0.2.02.03.93.87.32.74.91.45.61.83.51.70.0.9.13.65.21.44.71.33.50.84.80.5
critical3.61.60.0.0.0.8.13.97.14.912.43.34.41.43.61.47.82.55.23.618.04.67.41.610.11.82.90.86.20.5
less stable31.43.935.410.724.98.846.67.143.39.447.05.056.63.451.73.947.44.673.37.446.15.936.32.945.73.047.42.345.91.1
stable57.94.155.011.075.18.843.27.145.79.533.44.634.13.339.13.841.44.521.56.926.95.451.13.039.52.946.12.343.11.1
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.
totaln/a3.90.76.91.74.41.43.30.93.40.89.72.14.70.97.71.56.91.68.12.59.22.56.21.14.40.83.80.75.10.3
critical3.10.64.01.35.11.48.51.56.31.010.42.25.41.05.01.26.41.58.52.612.52.77.31.17.81.13.50.76.00.3
less stable36.61.741.73.434.63.152.22.647.82.143.83.656.22.346.82.748.53.160.64.542.84.136.72.146.42.048.42.045.30.7
stable56.41.847.43.455.93.336.12.542.52.136.13.433.72.140.62.638.23.022.83.935.64.149.82.241.32.044.31.943.60.7
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853318/319649
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.10.76.01.73.61.43.21.03.30.810.93.74.51.36.92.111.83.513.04.97.34.17.42.43.61.25.02.24.70.4
critical3.20.74.41.45.41.68.71.66.31.18.03.46.31.65.81.96.82.710.74.57.34.17.72.56.31.56.12.45.90.4
less stable38.52.042.63.536.43.453.12.948.32.242.65.755.13.244.33.944.85.349.87.034.37.837.44.444.33.144.04.944.60.9
stable55.22.047.03.554.53.535.02.742.12.238.55.834.13.143.03.936.65.226.56.451.08.247.54.545.73.144.94.944.80.9
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.
inside perimetern/a0.0.........9.06.23.23.20.0.6.33.54.44.39.85.52.61.52.31.60.0.3.30.9
critical0.0.........9.86.66.54.515.29.93.92.87.75.25.73.96.82.35.82.53.22.25.81.1
less stable34.710.0........36.910.663.89.241.413.263.76.964.09.750.99.040.74.556.25.465.96.152.42.3
stable65.310.0........44.310.726.58.543.413.426.06.323.98.633.68.749.94.635.75.230.95.938.42.3
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a7.22.29.66.40.0.2.02.03.93.85.32.45.11.55.81.93.61.80.0.6.43.25.01.43.71.22.80.84.30.5
critical3.61.60.0.0.0.8.13.97.14.912.83.43.21.23.71.58.02.62.82.717.64.77.61.610.31.93.00.86.20.5
less stable31.93.935.410.725.89.146.67.143.39.448.45.156.93.550.84.046.34.773.97.647.46.136.83.046.73.047.22.346.01.1
stable57.34.255.011.074.29.143.27.145.79.533.54.734.83.439.73.942.14.623.47.428.55.650.53.139.23.046.92.343.41.1
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.
totaln/a3.70.76.31.63.31.23.00.93.30.87.92.04.71.06.11.36.91.66.92.57.52.35.01.03.50.72.90.74.40.3
critical3.20.64.01.34.81.48.61.56.41.010.62.34.91.05.21.26.81.67.52.511.82.77.51.28.01.13.60.76.00.3
less stable37.21.842.03.435.33.252.22.748.02.245.03.656.42.347.32.749.23.260.74.744.54.337.82.247.12.048.52.045.80.7
stable55.91.847.73.456.63.336.12.642.32.136.53.534.02.241.52.737.03.124.94.236.24.249.62.241.42.045.12.043.80.7
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853319/319650
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a3.10.54.91.14.51.03.60.83.60.612.02.66.21.19.61.68.62.114.33.714.03.611.81.94.70.96.21.65.50.3
critical2.40.44.31.04.81.07.31.14.80.79.22.45.21.04.91.27.31.912.93.510.73.29.91.77.81.14.41.45.50.3
less stable37.11.446.42.533.32.353.02.049.61.539.13.952.32.244.22.744.73.647.05.134.64.930.42.743.12.142.93.343.60.6
stable57.41.444.52.457.42.436.12.042.01.539.84.036.32.141.22.739.43.625.74.640.75.147.82.944.52.146.53.345.50.6
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.
inside perimetern/a0.0.....0.0...8.84.21.81.80.0.5.52.23.82.612.24.35.11.43.21.32.11.24.30.7
critical0.0.....0.0...15.35.411.24.316.67.611.43.114.24.76.93.36.21.58.12.04.81.88.10.9
less stable41.17.9....100.0...37.37.261.66.847.710.058.64.766.46.344.46.438.53.153.23.755.34.149.71.6
stable58.97.9....0.0...38.77.225.46.135.79.624.54.115.64.836.66.350.23.235.53.537.84.037.81.6
total100.0.....100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.51.45.23.66.13.43.91.92.02.05.41.54.81.07.31.44.31.35.32.66.42.25.51.04.50.93.00.64.70.3
critical3.11.10.0.0.0.6.92.53.92.79.82.06.01.15.51.26.61.63.72.114.43.16.51.19.41.33.60.66.10.4
less stable34.73.028.97.327.06.453.65.041.46.953.63.357.62.453.92.752.23.369.05.342.44.335.52.248.32.150.61.648.30.8
stable56.73.165.97.667.06.835.64.852.87.031.13.131.62.333.32.536.93.222.04.836.94.352.62.337.72.142.81.641.00.8
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.
totaln/a3.40.54.91.04.71.03.60.73.60.68.21.35.40.78.21.06.11.08.71.910.11.87.20.84.40.63.40.55.10.2
critical2.50.43.90.94.30.97.21.04.70.610.21.55.90.75.60.97.81.210.12.011.61.97.40.88.50.83.90.55.90.2
less stable36.81.244.92.332.62.253.21.949.21.546.62.455.11.649.11.950.82.259.33.240.22.934.81.546.81.449.81.445.80.5
stable57.31.346.32.358.42.335.91.842.51.535.12.333.71.537.21.835.22.122.02.838.12.950.61.640.31.442.91.443.20.5
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853320/319651
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.30.0.0.0.1.00.60.40.30.0.1.50.74.81.62.91.65.43.00.0.2.21.31.00.60.0.1.00.2
critical1.60.51.60.93.11.16.81.44.30.910.43.49.41.86.81.913.23.424.45.711.84.610.32.58.31.68.42.46.10.4
less stable32.51.931.33.346.63.447.42.837.02.153.45.646.53.247.13.941.34.937.56.248.47.239.14.146.92.934.24.240.50.9
stable65.51.967.03.450.33.444.72.858.32.136.15.542.73.141.33.842.64.932.86.139.87.148.54.243.92.957.44.452.40.9
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.
inside perimetern/a0.0.........0.0.3.33.30.0.1.91.97.55.18.74.82.61.50.0.0.0.2.10.7
critical8.75.9........3.73.619.17.76.86.614.04.935.08.99.35.38.22.512.73.67.83.411.71.5
less stable30.99.7........60.710.361.19.363.713.060.86.943.29.255.38.953.64.554.85.341.46.152.42.3
stable60.410.2........35.610.116.46.829.612.423.36.014.26.626.77.935.64.332.54.950.96.233.82.2
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.31.30.90.60.60.61.71.22.82.83.92.21.50.83.11.00.80.41.30.3
critical1.41.00.0.0.0.6.13.43.33.211.73.26.41.78.02.14.92.012.55.312.13.88.71.711.01.87.21.27.70.6
less stable47.74.229.910.339.69.839.06.946.69.544.24.952.03.551.13.849.44.656.38.055.76.046.03.045.92.945.62.247.31.1
stable50.94.270.110.360.49.854.87.150.19.542.84.940.83.440.33.844.04.528.47.228.45.443.73.040.02.846.42.243.71.1
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.
totaln/a0.30.20.0.0.0.0.80.50.40.30.70.61.30.52.60.82.20.95.02.03.71.51.90.61.80.50.60.31.20.1
critical1.80.51.50.92.81.06.71.34.30.910.32.18.61.37.31.49.71.823.03.811.42.69.01.210.01.17.51.07.10.3
less stable35.21.731.23.245.93.246.32.637.52.049.63.549.72.349.72.748.53.044.74.453.24.145.82.147.51.943.01.943.90.7
stable62.71.767.33.251.33.246.12.657.82.039.43.540.42.240.42.639.73.027.34.031.73.843.22.140.71.948.81.947.70.7
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853321/319652
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.40.30.0.0.0.1.00.60.40.30.0.1.60.85.01.73.41.96.43.60.0.2.61.50.80.50.0.1.00.2
critical1.50.51.61.02.81.17.01.44.30.910.33.59.71.97.12.015.64.024.76.212.65.412.02.97.31.66.92.55.90.4
less stable33.32.031.43.347.53.547.62.937.62.153.25.947.03.348.53.939.85.340.26.841.68.137.54.447.13.135.74.840.80.9
stable64.82.067.03.449.73.544.52.857.72.136.45.741.73.239.43.841.25.328.76.345.88.147.94.544.83.157.54.952.20.9
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.
inside perimetern/a0.0.........0.0.3.33.30.0.2.02.08.45.78.94.92.71.50.0.0.0.2.20.7
critical8.75.9........3.93.819.17.76.86.614.55.139.29.69.65.48.52.613.33.78.33.612.11.5
less stable30.99.7........63.510.361.19.363.713.061.37.044.19.956.79.053.14.653.85.444.06.452.92.3
stable60.410.2........32.710.116.46.829.612.422.26.08.35.624.97.835.74.432.95.047.76.432.82.2
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.41.40.90.60.0.1.81.33.23.24.22.31.20.73.41.10.90.41.30.3
critical1.41.00.0.0.0.6.13.43.33.212.13.36.11.77.92.25.22.111.55.410.03.79.11.810.71.97.41.27.60.6
less stable48.44.229.910.337.39.939.06.946.69.545.15.051.33.652.03.948.44.755.78.656.36.247.03.147.43.045.52.347.61.1
stable50.24.270.110.362.79.954.87.150.19.541.45.041.73.540.03.944.74.729.77.829.55.742.73.038.53.046.22.343.51.1
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.
totaln/a0.30.20.0.0.0.0.90.50.40.30.70.71.40.52.40.82.41.05.82.34.11.61.90.61.80.50.70.31.20.2
critical1.80.51.50.92.51.06.81.34.20.910.52.28.71.37.51.410.62.023.84.110.62.79.71.39.61.27.41.17.10.3
less stable36.01.831.23.246.43.346.42.638.02.150.23.649.72.350.82.747.93.246.04.752.24.446.12.248.22.043.82.044.30.7
stable61.91.867.33.251.13.345.92.657.32.138.53.640.22.339.32.739.13.124.34.133.04.142.42.240.32.048.22.047.40.7
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853322/319653
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/an/a0.30.20.0.0.0.0.90.50.40.30.0.1.70.74.21.42.71.55.92.91.61.61.91.11.20.60.0.1.00.2
critical1.50.51.50.93.11.17.11.33.90.88.92.99.21.76.81.813.23.321.44.912.54.510.72.48.91.67.42.16.00.4
less stable33.21.832.93.247.53.247.22.737.02.052.35.146.92.947.83.640.54.738.05.745.26.739.13.847.42.735.44.040.80.8
stable65.01.865.63.249.43.244.82.658.72.038.85.142.32.941.23.543.64.834.75.640.76.648.33.942.52.757.24.152.20.8
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.
inside perimetern/a0.0.........0.0.3.23.16.46.21.81.86.54.47.94.42.31.30.0.0.0.2.10.6
critical8.05.4........7.04.816.96.910.57.012.74.538.38.48.54.88.82.413.73.58.33.312.21.4
less stable32.49.4........55.310.161.78.860.011.656.86.743.48.558.78.454.94.354.45.042.15.852.42.2
stable59.69.8........37.89.818.26.823.110.228.76.111.85.625.07.434.14.032.04.749.65.933.42.0
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.0.0.0.0.0.1.01.00.80.61.00.71.51.12.42.46.32.71.70.72.70.90.70.41.40.2
critical1.20.90.0.0.0.7.33.53.03.011.93.07.41.76.91.95.82.013.25.010.73.49.31.711.71.76.51.17.80.6
less stable47.54.031.59.942.29.036.76.545.19.046.94.653.33.351.33.649.04.351.87.653.75.643.82.846.92.745.52.147.21.0
stable51.34.068.59.957.89.056.06.751.99.040.24.638.63.240.83.543.74.332.67.129.35.145.22.838.62.647.32.143.61.0
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.
totaln/a0.30.20.0.0.0.0.70.40.40.30.50.51.40.52.80.82.00.85.01.85.11.71.90.61.70.50.50.31.20.1
critical1.60.41.40.82.81.07.21.33.90.810.21.98.81.27.01.39.81.722.63.410.82.49.61.210.81.16.90.97.10.3
less stable35.71.632.83.046.93.045.82.537.41.949.93.350.42.150.02.547.42.943.34.052.03.945.02.048.11.843.21.844.10.6
stable62.41.665.83.150.33.046.32.458.31.939.43.239.42.140.22.440.92.929.13.732.13.643.62.039.41.849.41.847.50.6
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853323/319654
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a3.80.73.30.66.21.16.81.15.02.24.60.4
critical3.60.76.90.86.21.17.11.16.12.45.90.4
less stable39.71.747.51.649.82.342.62.144.04.944.80.9
stable52.91.842.31.537.82.243.52.144.94.944.70.9
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.4.52.63.91.10.0.3.30.8
critical0.0.0.0.9.53.76.21.43.22.25.91.1
less stable34.810.00.0.49.36.351.52.865.96.152.32.3
stable65.210.00.0.36.76.138.42.830.95.938.52.3
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a7.52.12.01.45.41.04.20.72.80.84.30.5
critical3.21.46.02.45.41.09.31.13.00.86.20.5
less stable32.23.740.54.952.82.344.51.847.22.346.01.1
stable57.13.951.55.036.52.242.11.846.92.343.61.1
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.30.73.20.55.70.75.00.52.90.74.40.3
critical3.40.66.80.76.00.78.00.73.60.76.00.3
less stable38.41.646.91.551.21.645.21.248.52.045.80.7
stable53.91.643.21.537.11.541.91.245.12.043.80.7
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853324/319655
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a4.10.73.70.67.51.28.21.16.92.45.40.4
critical3.50.66.90.86.01.17.21.16.22.35.90.4
less stable39.21.747.11.549.12.341.12.042.74.644.00.9
stable53.21.842.41.537.32.243.52.044.24.644.60.9
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.6.02.94.51.20.0.3.80.9
critical0.0.0.0.9.43.76.01.33.12.25.81.1
less stable34.810.0100.0.48.56.251.52.866.56.052.32.3
stable65.210.00.0.36.16.038.02.730.45.838.12.2
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a7.52.12.01.45.61.04.80.83.50.84.80.5
critical3.11.45.92.35.81.09.21.02.90.86.20.5
less stable31.83.740.14.952.82.344.01.847.42.345.81.1
stable57.63.952.05.035.92.242.01.846.12.343.21.1
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a4.60.73.50.56.50.85.90.63.80.75.10.3
critical3.30.66.80.76.10.77.90.73.50.76.00.3
less stable37.91.546.51.550.81.644.41.248.42.045.40.7
stable54.21.643.21.536.61.541.81.244.31.943.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853325/319656
NFI4
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/acritical1.70.52.11.13.01.22.30.93.30.86.52.96.51.63.91.62.31.610.64.510.25.09.82.76.21.54.92.23.90.4
less stable31.41.937.83.442.43.542.52.842.42.253.95.943.43.245.93.961.25.348.67.247.68.234.04.336.43.047.75.040.60.9
stable66.92.060.13.454.53.555.22.954.42.239.65.750.13.250.33.836.55.240.87.142.28.156.24.557.43.147.45.055.50.9
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.
inside perimetercritical0.0.........0.0.6.84.70.0.6.53.612.26.60.0.10.02.710.23.26.53.17.11.2
less stable30.09.6........48.710.867.39.072.711.750.37.151.910.265.68.647.24.646.35.451.66.450.72.3
stable70.09.6........51.310.825.98.527.311.743.27.035.99.734.48.642.94.543.55.341.96.342.22.3
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical1.51.00.0.0.0.2.02.03.03.02.61.57.61.88.32.26.32.35.63.97.23.18.71.76.11.47.11.26.30.6
less stable37.84.140.110.941.810.249.27.265.29.054.45.149.23.546.93.950.64.750.98.558.96.148.73.141.63.059.12.350.21.1
stable60.74.159.910.958.210.248.87.231.88.843.05.143.23.544.73.943.14.643.58.533.95.842.63.152.33.033.82.243.51.1
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.
totalcritical1.60.51.91.02.71.12.30.83.30.83.81.47.01.25.81.34.91.49.42.86.32.19.31.36.71.06.71.05.00.3
less stable32.51.738.03.242.33.343.42.643.52.153.63.647.42.347.42.754.23.250.14.957.34.344.72.240.12.056.52.044.90.7
stable65.91.760.13.254.93.354.32.753.22.142.63.645.62.346.72.740.83.140.54.836.44.246.02.253.22.036.81.950.00.7
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853326/319657
NFI1
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI1
state1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a3.50.53.80.48.20.98.40.86.21.65.50.3
critical2.90.45.50.55.70.78.80.84.41.45.50.3
less stable39.51.247.21.147.71.640.01.442.93.343.60.6
stable54.11.243.41.138.41.542.81.446.53.345.40.6
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.4.11.85.20.92.11.24.30.7
critical0.0.0.0.13.83.18.21.14.81.88.10.9
less stable41.17.9100.0.49.64.549.01.955.34.149.81.6
stable58.97.90.0.32.64.237.61.937.84.037.81.6
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a5.41.34.01.45.80.75.00.63.00.64.70.3
critical2.71.04.41.56.70.88.20.73.60.66.10.4
less stable34.02.843.93.555.31.645.21.350.61.648.20.8
stable57.92.947.63.532.21.541.61.342.81.641.10.8
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a3.70.43.80.46.80.56.30.43.40.55.10.2
critical2.80.45.40.56.60.58.40.53.90.55.90.2
less stable38.71.147.01.051.41.144.00.949.81.445.80.5
stable54.71.143.81.035.21.041.30.942.91.443.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853327/319658
NFI4
forest area
avalanches SilvaProtect · stand stability
unit of reference: economic region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
n/acritical1.60.52.01.02.91.22.30.83.40.88.53.26.81.54.41.56.42.211.14.08.43.710.12.18.61.57.31.94.80.4
less stable31.11.938.33.441.63.442.42.842.52.252.05.443.33.046.63.658.44.447.46.253.86.638.03.437.52.645.03.640.90.8
stable67.31.959.63.455.53.455.32.854.12.239.45.349.93.049.03.635.34.341.56.237.96.551.93.654.02.747.83.654.30.8
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.
inside perimetercritical0.0.........0.0.6.64.50.0.6.23.517.37.00.0.9.52.611.13.25.72.87.41.2
less stable30.09.6........46.510.565.09.072.711.752.47.048.49.465.38.446.84.547.75.051.46.050.62.3
stable70.09.6........53.510.528.48.527.311.741.46.934.38.934.78.443.64.541.25.042.85.942.02.2
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical1.51.00.0.0.0.2.02.03.03.02.51.47.81.87.92.15.82.16.63.68.93.210.41.86.61.47.51.16.70.5
less stable37.74.040.110.941.810.250.37.165.29.053.15.049.43.547.33.851.44.559.87.355.95.847.62.940.42.858.62.150.01.1
stable60.94.159.910.958.210.247.77.131.88.844.45.042.93.444.83.842.74.533.67.135.25.542.02.953.12.833.92.043.31.1
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.
totalcritical1.50.41.90.92.61.12.20.83.30.84.81.57.21.15.81.26.11.410.92.76.81.910.11.28.11.07.30.95.70.3
less stable32.31.738.53.241.63.243.52.643.72.152.03.547.02.247.82.654.52.951.64.357.13.944.32.040.01.854.81.744.90.6
stable66.21.759.73.255.83.254.32.653.02.143.33.545.82.246.32.639.42.837.54.136.03.745.62.052.01.838.01.749.40.6
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.
© WSL, Swiss National Forest Inventory, 11.07.2020 #853328/319659
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a0.30.20.50.22.50.72.00.60.0.1.00.2
critical1.60.44.80.79.01.311.61.46.92.56.00.4
less stable32.71.742.61.548.32.342.72.135.74.840.70.9
stable65.41.752.11.540.22.343.62.157.54.952.30.9
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.1.71.72.91.00.0.2.20.7
critical8.75.90.0.10.63.813.31.98.33.612.01.5
less stable30.79.60.0.62.66.154.12.844.06.452.82.3
stable60.610.20.0.25.15.429.62.647.76.433.02.2
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.70.42.50.60.90.41.30.3
critical1.30.94.01.97.81.29.31.17.41.27.60.6
less stable46.23.940.54.950.62.348.71.845.52.347.81.1
stable52.54.055.64.940.92.339.51.846.22.343.31.1
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.20.50.21.60.42.40.40.70.31.20.2
critical1.70.44.70.68.60.910.90.87.41.17.10.3
less stable34.91.542.41.550.21.647.71.243.82.044.30.7
stable63.21.652.41.539.61.639.01.248.22.047.40.7
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853329/319660
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI2
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a0.20.20.40.22.20.62.10.50.0.1.00.2
critical1.40.44.80.68.51.111.41.27.42.16.00.4
less stable33.01.642.21.447.82.143.41.835.44.040.80.8
stable65.31.652.61.441.52.043.11.857.24.152.20.8
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.3.02.12.50.80.0.2.10.6
critical7.95.40.0.11.63.713.51.88.33.312.31.4
less stable32.19.40.0.59.65.754.22.642.15.852.22.2
stable59.99.80.0.25.95.129.82.449.65.933.42.0
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.90.42.50.50.70.41.40.2
critical1.10.84.31.98.01.110.11.06.51.17.80.6
less stable45.73.740.64.651.52.147.11.645.52.147.41.0
stable53.23.755.14.639.62.140.31.647.32.143.51.0
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.10.40.21.70.42.30.30.50.31.20.1
critical1.50.44.70.68.50.811.20.76.90.97.20.3
less stable35.01.442.11.450.21.447.01.143.21.844.10.6
stable63.21.452.81.439.71.439.51.149.41.847.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853330/319661
NFI2
forest area
avalanches SilvaProtect · stand stability
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtectstand stability %± %± %± %± %± %±
n/an/a0.30.20.50.22.40.71.90.50.0.1.00.2
critical1.60.44.90.78.81.311.21.28.42.46.10.4
less stable32.11.742.11.547.62.243.51.934.24.240.40.9
stable66.01.752.61.541.22.243.51.957.44.452.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a0.0.0.0.1.71.72.80.90.0.2.10.7
critical8.75.90.0.10.53.812.81.97.83.411.61.5
less stable30.79.60.0.61.66.154.22.841.46.152.32.3
stable60.610.20.0.26.25.530.22.550.96.234.02.2
total100.0.0.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.0.0.0.0.90.42.40.50.80.41.30.3
critical1.20.93.91.97.91.29.61.07.21.27.70.6
less stable45.73.941.14.950.42.347.91.845.62.247.41.1
stable53.13.955.04.940.82.240.11.746.42.243.51.1
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.20.20.40.21.60.42.30.40.60.31.20.1
critical1.70.44.80.68.50.910.70.77.51.07.10.3
less stable34.31.542.01.449.71.547.41.243.01.943.90.7
stable63.71.552.81.440.21.539.61.248.81.947.70.7
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853331/319662
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