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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
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 ago209.8233.2719.9911.01314.0116.218294.12
11-20 years ago49.2617.6109.5145.5198.1152.23092.24
21-30 years ago17.1114.9203.3244.2214.4212.42936.37
31-40 years ago6.8174.1221.4383.3242.4292.03219.910
41-50 years ago4.3211.8330.6581.7330.8500.85010.014
over 50 years ago4.7202.1321.2414.8203.0264.02219.710
total292.2263.7535.9630.6732.7717.510472.61
101-500 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago63.9544.6622.6912.01215.2118.016166.23
11-20 years ago26.3821.1915.1116.81615.2115.02089.55
21-30 years ago11.91314.2127.5164.42112.1133.92353.96
31-40 years ago9.6147.5165.0194.8207.9154.62139.47
41-50 years ago4.9207.1162.6286.7174.1226.11831.68
over 50 years ago9.81413.81210.31422.2914.31123.8894.24
total126.43108.3363.0456.9568.7451.45474.72
501-1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago4.0227.9164.8203.0264.2221.83325.69
11-20 years ago1.6354.5214.1221.9314.7201.24118.110
21-30 years ago0.6583.5232.6282.2304.7203.12516.711
31-40 years ago0.6582.0322.0311.6353.9222.92613.112
41-50 years ago0.0.3.2253.4242.3303.6232.42914.712
over 50 years ago1.24110.1147.01714.0119.71419.81061.85
total8.11631.1723.9825.0830.7731.27150.03
over 1000 mn/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.6580.8502.2300.6581.0452.1307.316
11-20 years ago0.21000.4710.8500.4711.0452.0314.920
21-30 years ago0.0.0.8502.2300.21003.0263.0269.215
31-40 years ago0.0.0.21001.8331.0452.0324.8209.814
41-50 years ago0.0.0.0.1.0450.8501.4384.9208.116
over 50 years ago0.4713.2253.6245.71911.11341.3665.45
total1.2415.51911.6138.61519.51058.15104.64
totaln/a0.4710.0.0.0.0.0.0.0.0.0.0.471
less than 10 years ago278.3286.5449.4526.5834.4718.110493.31
11-20 years ago77.3543.6629.5714.71129.0810.513204.63
21-30 years ago29.6823.4915.61110.91324.2912.312116.04
31-40 years ago17.01113.81210.21310.81316.21114.31182.25
41-50 years ago9.21412.1127.61611.5139.81414.21164.45
over 50 years ago16.11129.2822.1946.7538.0788.93241.02
total427.91208.71134.32121.12151.62158.321201.91
© WSL, Swiss National Forest Inventory, 21.06.2020 #816990/283321
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