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NFI3
forest area
horizontal distance sample plot-road (4 classes) · 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
horizontal distance sample plot-road (4 classes)time of last treatment (classes of 10 years) %± %± %± %± %± %± %±
up to 100 mless than 10 years ago73.21.263.02.962.03.737.34.145.64.529.34.965.51.0
11-20 years ago15.20.916.12.220.53.120.33.331.74.217.34.117.10.8
21-30 years ago7.60.710.41.810.22.313.42.95.62.115.03.98.70.6
31-40 years ago2.20.46.31.43.81.46.32.14.81.96.92.73.40.4
41-50 years ago0.90.21.30.71.20.96.92.14.11.83.41.91.60.3
over 50 years ago0.90.22.91.02.21.115.73.08.12.528.14.93.70.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
101-500 mless than 10 years ago54.62.045.92.343.03.020.02.633.93.014.92.440.61.1
11-20 years ago18.21.519.11.820.12.410.12.020.42.59.52.017.10.8
21-30 years ago13.51.411.31.412.42.07.31.715.32.28.61.911.90.7
31-40 years ago5.10.98.21.25.81.49.71.97.61.66.61.76.90.5
41-50 years ago3.00.75.31.05.41.412.92.24.51.311.62.26.00.5
over 50 years ago5.70.910.21.413.22.140.03.218.32.448.83.517.50.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
501-1000 mless than 10 years ago34.18.419.33.534.14.99.53.022.43.78.92.619.41.6
11-20 years ago16.06.517.13.313.93.610.43.124.43.85.02.014.51.4
21-30 years ago15.56.413.33.010.73.26.32.511.62.88.92.610.71.3
31-40 years ago9.25.112.22.913.63.52.21.510.02.68.22.59.41.2
41-50 years ago12.15.75.92.08.72.915.53.73.01.56.52.27.71.1
over 50 years ago13.06.032.04.119.04.156.15.128.74.062.44.438.32.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
over 1000 mless than 10 years ago68.126.628.210.717.96.24.54.415.93.63.01.29.71.5
11-20 years ago31.926.622.09.713.15.43.93.99.82.93.11.37.11.3
21-30 years ago0.0.11.57.713.15.53.93.915.13.65.01.68.71.4
31-40 years ago0.0.5.25.121.06.612.56.87.62.66.61.88.61.4
41-50 years ago0.0.10.47.08.14.512.56.86.82.58.01.98.01.4
over 50 years ago0.0.22.710.026.87.262.79.944.94.974.33.158.02.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
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, 21.06.2020 #816935/283266
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