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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 NFI1/NFI2/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 ago72.11.253.92.955.53.837.14.043.14.138.65.563.21.0
11-20 years ago16.81.026.22.627.13.418.33.325.73.613.13.919.40.8
21-30 years ago5.80.67.91.68.62.111.42.613.32.912.63.77.30.5
31-40 years ago2.20.46.51.44.11.59.92.56.92.18.73.23.90.4
41-50 years ago1.50.32.71.01.71.06.22.02.71.43.72.12.10.3
over 50 years ago1.50.32.81.03.01.317.03.18.22.323.24.83.90.4
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 ago51.42.042.92.336.72.919.62.622.12.515.92.536.31.0
11-20 years ago20.31.620.41.823.82.614.52.324.52.610.02.019.60.9
21-30 years ago9.31.212.01.512.22.07.41.716.22.26.61.710.70.7
31-40 years ago7.71.17.11.27.91.65.21.511.11.95.61.67.50.6
41-50 years ago3.80.86.71.14.51.310.62.06.11.413.12.36.60.5
over 50 years ago7.51.111.01.414.82.242.83.320.02.448.83.419.20.8
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 ago49.98.327.54.022.14.211.63.214.83.46.52.218.71.6
11-20 years ago16.86.313.53.020.84.19.62.917.13.62.51.412.71.4
21-30 years ago8.14.59.92.610.93.17.72.615.13.47.22.310.01.2
31-40 years ago8.64.86.22.18.12.74.92.210.72.98.82.57.81.1
41-50 years ago0.0.11.52.812.93.43.91.912.73.27.42.49.11.2
over 50 years ago16.56.231.44.125.14.462.24.829.44.467.64.241.82.0
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 ago48.625.023.710.321.56.47.75.35.52.73.01.27.51.4
11-20 years ago25.722.111.97.99.74.68.25.67.03.04.71.56.61.3
21-30 years ago0.0.17.29.114.75.53.83.711.13.73.61.37.01.4
31-40 years ago0.0.6.05.817.05.97.75.311.23.75.21.67.91.4
41-50 years ago0.0.0.0.12.35.212.06.56.82.97.51.97.81.4
over 50 years ago25.722.141.312.024.86.860.59.858.35.876.13.063.22.5
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 ago65.61.043.91.638.72.022.31.923.81.712.81.343.90.6
11-20 years ago17.80.821.11.423.31.814.31.621.41.77.21.117.90.5
21-30 years ago6.80.610.51.011.11.38.41.214.71.46.51.09.00.4
31-40 years ago3.90.46.80.87.41.16.61.110.01.26.51.06.00.3
41-50 years ago2.20.36.00.85.71.08.11.26.61.09.01.25.10.3
over 50 years ago3.60.411.71.113.81.440.42.223.41.758.02.018.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 21.06.2020 #816936/283267
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