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NFI4b
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: grid NFI4 2009-2013
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
diameter classesmain tree species m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± %
12-15 cmspruce0.390.690.4110.5120.890.2150.44
fir0.290.2120.2170.0360.0640.0340.16
pine0.0580.0600.0690.1300.1260.01000.017
larch0.0800.0520.0530.2170.1210.1200.112
stone pine......0.0410.0310.01000.024
other conifers0.0290.0590.0620.0610.036..0.019
beech0.360.2130.3160.1320.0370.3150.25
maple0.1120.1190.1230.1270.0400.0380.18
ash0.1140.1250.1240.0350.0440.1250.110
oak0.0400.0690.0580.139..0.0320.022
chestnut0.0100....0.0100..0.3210.021
other broadleaves0.1110.2150.2210.3160.2230.6130.26
total1.241.451.271.471.471.771.32
16-23 cmspruce0.981.581.5101.4132.090.6151.24
fir0.590.5110.3160.1290.1370.1330.36
pine0.0370.0660.0570.6240.3250.01000.115
larch0.0430.0450.0540.6150.2220.4180.210
stone pine......0.1250.2250.01000.018
other conifers0.0250.0820.0420.0640.039..0.019
beech0.860.7120.7130.2320.1340.9160.75
maple0.3110.3150.3180.1270.0400.1310.27
ash0.2130.1200.3220.2360.1500.1310.29
oak0.1230.0470.01000.1370.01000.2320.116
chestnut......0.0100..1.0180.118
other broadleaves0.3110.2180.4210.5170.5251.2120.47
total3.143.553.764.173.564.663.62
24-35 cmspruce1.883.983.6102.8113.981.4152.74
fir0.991.1120.7170.2340.1460.2370.76
pine0.2210.1720.1510.8220.5250.0680.313
larch0.0360.0480.0711.3140.6171.0150.48
stone pine......0.3300.522..0.118
other conifers0.0320.0790.01000.0.0.0100..0.028
beech2.061.3111.6120.4300.3301.3151.45
maple0.5100.6150.8160.1360.1350.1380.47
ash0.4120.4240.6180.3590.1550.1370.39
oak0.3160.0560.01000.1470.01000.3250.213
chestnut......0.1710.01001.3170.217
other broadleaves0.3130.2280.4210.3260.2351.4140.48
total6.537.757.966.676.267.156.92
36-51 cmspruce2.966.466.083.9106.372.2134.33
fir1.871.791.7120.4340.2290.3271.25
pine0.5120.2500.1370.6230.6210.1460.49
larch0.1270.0550.1532.4131.4131.2140.67
stone pine..0.0100..0.3290.421..0.117
other conifers0.1380.0100......0.01000.036
beech3.251.7122.5110.2450.4311.0162.04
maple0.4100.4180.6140.1570.1560.0470.37
ash0.7120.2220.6180.1670.0500.1400.49
oak0.4130.0440.1480.0630.0730.2310.211
chestnut0.01000.0100..0.0710.01000.9180.118
other broadleaves0.3150.1290.1350.2330.1330.7150.39
total10.4310.8411.958.169.556.769.82
>= 52 cmspruce3.277.478.793.8135.793.2134.94
fir2.482.7102.1140.3370.4290.5281.75
pine0.3170.1560.0590.2490.5240.0720.213
larch0.1280.1490.2423.9122.2141.7150.98
stone pine......0.4350.429..0.123
other conifers0.1420.0100......0.01000.139
beech2.371.2161.6150.2470.2410.8181.46
maple0.1220.1310.330..0.1610.01000.115
ash0.5150.1390.3330.01000.01000.0710.213
oak0.420..0.1610.01000.1790.1600.218
chestnut......0.1660.01001.6280.226
other broadleaves0.2300.2530.1460.1580.0710.1390.121
total9.5411.9513.369.089.568.0810.12
totalspruce9.0419.7520.2612.4818.657.61013.52
fir5.756.385.0101.0260.7231.0244.14
pine1.0100.4440.4352.3172.0160.1481.08
larch0.2180.2300.3358.3104.5114.5102.06
stone pine..0.0100..1.2221.5180.01000.314
other conifers0.3240.1610.1410.0550.1340.01000.120
beech8.745.096.791.0261.0254.3115.63
maple1.471.6102.1110.4230.2280.3271.15
ash1.980.9171.9140.5380.2430.5281.26
oak1.2110.1320.1400.3350.1710.8190.69
chestnut0.0800.0100..0.3610.01004.9130.713
other broadleaves1.291.0181.2151.3161.0213.9101.55
total30.7235.3338.1329.1430.0328.0331.81
© WSL, Swiss National Forest Inventory, 29.12.2015 #204440/190703
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