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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: 1000 ha
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)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
up to 100 mn/a0.4710.0.0.0.0.0.0.0.0.0.0.471
less than 10 years ago208.0232.8719.7910.81313.4126.218291.02
11-20 years ago48.8617.0119.5145.5198.0152.03290.84
21-30 years ago17.1114.9203.3244.0214.4212.42936.17
31-40 years ago6.6173.9231.4383.1252.4292.03219.310
41-50 years ago4.3211.8330.6581.7330.8500.85010.014
over 50 years ago4.5211.8331.0454.8202.8274.02218.910
total289.7262.3535.5730.0731.7717.310466.51
101-500 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago63.1543.4621.6911.21314.4117.616161.23
11-20 years ago25.5920.71014.3116.61715.2114.62186.95
21-30 years ago11.51313.2126.9174.02210.9133.72350.16
31-40 years ago9.6147.3164.8204.0227.9154.22237.87
41-50 years ago4.9207.1162.4296.3173.9226.11830.88
over 50 years ago9.61412.4139.71421.6913.51222.6989.34
total124.23104.1359.6553.7565.7448.85456.12
501-1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago4.0227.7164.4213.0263.8231.83324.69
11-20 years ago1.4384.1224.1221.9314.7201.24117.511
21-30 years ago0.6583.1252.6281.6354.1222.92614.811
31-40 years ago0.6582.0321.8331.6353.9222.92612.912
41-50 years ago0.0.3.2253.0261.4383.3242.03112.912
over 50 years ago1.2419.7146.61713.4128.31519.41058.66
total7.91629.7822.5922.9928.1830.27141.33
over 1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.6580.8502.0310.6581.0452.1307.117
11-20 years ago0.21000.4710.8500.4711.0452.0314.920
21-30 years ago0.0.0.8501.6350.21002.2303.0267.816
31-40 years ago0.0.0.21001.8330.8502.0324.0228.815
41-50 years ago0.0.0.0.1.0450.6581.4384.5217.516
over 50 years ago0.21003.1262.8274.6219.71438.0658.45
total1.0455.31910.0147.21617.31053.6594.44
totaln/a0.4710.0.0.0.0.0.0.0.0.0.0.471
less than 10 years ago275.8284.7447.6525.5832.6717.710484.02
11-20 years ago75.9542.2628.7814.51128.889.914200.03
21-30 years ago29.2822.0914.4119.71421.5911.913108.84
31-40 years ago16.81113.4129.8149.61416.21113.11278.85
41-50 years ago9.21412.1127.01610.1149.41413.41261.26
over 50 years ago15.51127.0820.1944.5634.2784.04225.33
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 21.06.2020 #816991/283322
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