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NFI4
basal area
diameter classes · main tree species
unit of reference: protection forest region
unit: m²/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
diameter classesmain tree species m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± %
12-15 cmspruce0.370.570.580.590.870.2120.43
fir0.270.290.2130.1280.0440.0300.15
pine0.0380.0420.0490.1250.1190.0790.013
larch0.0640.0420.0440.2160.1160.1150.19
stone pine0.0.0.0.0.0710.0260.0220.0630.016
other conifers0.0230.0470.0400.0550.0280.01000.015
beech0.350.2110.2120.1260.0240.3110.24
maple0.190.1130.1190.1220.0320.0250.16
ash0.1100.1180.1210.0290.0310.1190.17
oak0.0270.0620.0510.1280.01000.0240.015
chestnut0.0710.0.0.0.0.0860.0.0.2180.018
other broadleaves0.180.2110.2160.3120.2160.690.25
total1.231.441.351.451.451.751.42
16-23 cmspruce0.961.461.581.482.170.6111.23
fir0.570.580.4120.1200.1300.1270.45
pine0.0300.1400.0410.5190.4170.0710.111
larch0.0350.0390.0460.7110.3180.4130.27
stone pine0.0.0.01000.01000.1200.2180.01000.013
other conifers0.0230.0650.0330.0640.0340.0.0.016
beech0.850.690.7100.2240.1200.9110.64
maple0.380.3110.3150.1190.0330.1210.25
ash0.290.1160.2190.1290.1330.2180.27
oak0.1180.0430.01000.1270.0530.1240.112
chestnut0.0740.0.0.0.0.0710.0.0.8130.113
other broadleaves0.380.2130.4160.6130.4191.280.45
total3.133.443.654.053.654.443.52
24-35 cmspruce1.763.763.572.884.161.3112.63
fir0.971.090.8120.2230.1280.2270.65
pine0.2160.1450.2340.8160.5180.1560.39
larch0.1250.0440.0421.3110.7120.9120.46
stone pine0.0.0.01000.0720.4200.5180.01000.113
other conifers0.1250.0680.0590.0.0.0710.0.0.021
beech1.951.391.590.3230.2221.3111.34
maple0.580.6110.7140.1290.1290.1260.46
ash0.490.3190.5160.2430.1390.3230.37
oak0.3130.0420.0720.1360.0740.3200.210
chestnut0.01000.0.0.0.0.0720.01001.2120.212
other broadleaves0.3100.2190.3180.4180.1271.4100.46
total6.427.247.546.756.447.146.81
36-51 cmspruce2.846.345.863.866.252.0104.22
fir1.751.771.590.3230.2220.3211.24
pine0.5100.2350.2260.6170.7150.1420.47
larch0.1190.0380.2332.581.4101.2100.65
stone pine0.0.0.0660.0730.4200.5160.0.0.112
other conifers0.1270.01000.0.0.0.0.0.0.01000.026
beech3.231.682.480.2250.3241.2111.93
maple0.470.4130.5110.1410.0480.1330.35
ash0.680.2160.5140.1400.0440.2230.46
oak0.4100.1390.0450.1390.1600.2230.29
chestnut0.0880.01000.0.0.0570.01000.9130.112
other broadleaves0.3120.1240.1250.2250.1280.7110.37
total10.1210.7311.338.249.437.049.71
>= 52 cmspruce3.057.358.063.796.572.8104.83
fir2.463.082.2100.4280.5190.5231.84
pine0.3130.1450.1410.3330.4190.0520.210
larch0.1200.1380.1334.182.1121.8111.06
stone pine0.0.0.0710.01000.4250.4210.01000.115
other conifers0.1340.01000.0.0.0.0.0.0.01000.032
beech2.451.3121.7100.1440.2351.1221.54
maple0.1160.2390.3270.0.0.0620.0630.114
ash0.4110.1290.2250.0720.0740.0460.210
oak0.5130.0460.1400.0610.1500.1390.211
chestnut0.01000.0.0.0.0.1670.01002.1210.320
other broadleaves0.2230.1510.1470.1470.0580.2330.116
total9.6312.3312.859.1510.358.7710.32
totalspruce8.7319.3319.2412.2519.747.0713.22
fir5.746.565.071.2180.9171.0174.13
pine1.080.4290.6252.2132.1120.3401.06
larch0.3140.2260.4258.864.594.472.24
stone pine0.0.0.1640.1711.3151.6140.0570.310
other conifers0.3170.0510.1270.0490.1300.0920.114
beech8.635.176.460.8190.9184.995.62
maple1.551.582.090.4170.2240.4181.14
ash1.860.8131.5110.4280.2290.8161.15
oak1.380.2300.2310.3230.1480.8150.76
chestnut0.0900.01000.0.0.2570.01005.2110.710
other broadleaves1.370.8131.1121.5110.8154.171.54
total30.4134.9236.5229.3231.1228.9231.71
© WSL, Swiss National Forest Inventory, 20.06.2020 #837853/304184
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