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NFI4
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 NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
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 mn/a0.10.10.0.0.0.0.0.0.0.0.0.0.10.1
less than 10 years ago71.81.252.72.955.53.736.03.942.43.935.85.262.41.0
11-20 years ago16.81.027.32.626.63.318.53.225.13.411.73.519.50.8
21-30 years ago5.90.67.91.59.42.213.42.714.02.813.63.67.70.5
31-40 years ago2.30.46.21.44.01.510.52.57.52.111.33.44.10.4
41-50 years ago1.50.32.91.01.60.95.81.92.51.24.52.22.20.3
over 50 years ago1.60.33.01.02.91.315.92.98.72.223.14.64.10.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
101-500 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago50.82.041.72.236.12.820.82.521.92.315.62.335.41.0
11-20 years ago20.51.619.91.824.02.512.42.023.12.39.51.919.10.8
21-30 years ago9.31.212.61.511.61.97.41.616.52.17.51.711.00.7
31-40 years ago7.71.17.01.18.01.57.51.612.01.88.61.88.30.6
41-50 years ago4.00.86.91.14.01.111.72.06.01.312.62.16.70.5
over 50 years ago7.71.111.91.416.22.140.33.020.52.246.33.219.60.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
501-1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago51.28.025.83.619.53.712.93.113.52.95.91.917.41.4
11-20 years ago18.16.213.62.818.43.68.52.616.83.14.01.612.41.2
21-30 years ago7.54.210.62.511.43.06.82.314.42.99.72.410.51.1
31-40 years ago7.94.46.82.18.02.67.02.414.02.99.72.49.11.1
41-50 years ago0.0.10.62.513.23.26.22.311.92.76.62.09.11.1
over 50 years ago15.25.732.63.929.34.358.54.629.43.864.23.941.41.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
over 1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago58.622.215.67.219.75.68.14.55.82.54.01.27.51.2
11-20 years ago20.718.47.85.38.03.85.73.95.82.53.81.25.21.0
21-30 years ago0.0.15.27.016.15.22.62.612.73.65.51.48.21.3
31-40 years ago0.0.3.93.918.05.411.05.211.63.57.41.69.31.3
41-50 years ago0.0.0.0.10.14.38.34.67.92.98.41.77.91.2
over 50 years ago20.718.457.59.728.26.464.38.056.25.370.92.761.92.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.10.10.0.0.0.0.0.0.0.0.0.0.00.0
less than 10 years ago65.21.042.11.637.31.922.41.722.81.611.81.241.80.6
11-20 years ago18.00.821.01.322.51.612.81.420.21.56.60.917.30.5
21-30 years ago6.90.510.91.011.31.38.61.215.11.37.91.09.40.4
31-40 years ago4.00.46.70.87.71.08.41.211.31.28.71.06.80.3
41-50 years ago2.20.36.00.75.50.98.81.26.60.98.91.05.30.3
over 50 years ago3.70.413.41.115.71.439.12.024.01.656.01.819.40.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 21.06.2020 #816939/283270
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