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NFI4
forest area
stand stability · stand age (classes of 40 years)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
stand stabilitystand age (classes of 40 years) %± %± %± %± %± %± %±
critical0 (unstocked)0.10.10.50.20.50.30.50.30.50.30.10.10.30.1
1-401.00.22.40.53.00.74.00.83.00.62.80.62.30.2
41-800.50.10.50.21.40.52.10.62.00.52.80.61.20.1
81-1200.40.10.40.20.60.30.30.20.80.30.10.10.40.1
121-1600.0.0.80.30.60.31.10.40.60.30.10.10.40.1
over 1600.0.0.20.10.30.20.50.30.10.10.0.0.10.0
uneven-aged0.30.11.60.40.90.41.60.50.90.31.30.40.90.1
total2.30.36.40.87.21.010.11.28.11.07.30.95.70.3
less stable0 (unstocked)0.20.10.70.30.60.30.50.30.70.30.40.20.40.1
1-4012.10.79.00.914.31.39.11.28.41.09.11.010.60.4
41-806.90.57.10.88.11.17.81.14.60.817.61.38.30.4
81-1209.00.68.10.88.51.13.40.74.80.83.50.77.00.3
121-1603.90.47.50.87.51.05.60.97.10.93.90.75.50.3
over 1600.90.23.70.61.90.56.20.94.80.83.50.62.90.2
uneven-aged5.80.514.11.19.81.211.81.39.51.116.81.310.20.4
total38.71.050.21.650.81.944.32.040.01.854.81.744.90.6
stable0 (unstocked)0.60.21.60.40.60.31.30.51.20.40.50.30.90.1
1-4010.40.66.00.74.30.84.30.86.00.94.60.77.00.3
41-8010.50.64.90.74.90.86.41.04.30.78.51.07.40.3
81-12016.70.87.70.812.41.24.40.86.30.93.20.610.30.4
121-1608.60.64.80.76.70.93.30.77.20.93.40.66.40.3
over 1601.40.33.00.53.60.75.30.99.71.13.90.73.70.2
uneven-aged10.90.715.51.19.51.120.61.617.21.413.81.213.70.4
total59.11.143.41.542.01.945.62.052.01.838.01.749.40.6
total0 (unstocked)0.90.22.70.51.60.52.40.62.40.61.00.31.70.2
1-4023.40.817.51.121.71.517.31.517.41.316.51.319.90.5
41-8017.90.812.41.014.41.416.31.511.01.128.91.616.90.5
81-12026.00.916.21.121.51.58.21.112.01.26.80.917.70.5
121-16012.50.713.01.014.81.310.01.215.01.37.40.912.20.4
over 1602.30.37.00.85.70.911.91.314.61.27.40.96.70.3
uneven-aged17.00.831.21.420.21.533.91.927.71.631.91.724.80.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 25.06.2020 #793878/260210
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