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NFI4b
basal area
diameter classes · main tree species
unit of reference: biogeographical region
unit: m²/ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: grid NFI4 2009-2013
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
diameter classesmain tree species m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± %
12-15 cmspruce0.3120.4120.570.6130.8110.2160.45
fir0.3110.2120.2110.0390.0720.0350.26
pine0.0730.0700.0490.2320.1310.01000.019
larch0.01000.0840.0400.2200.0240.1270.016
stone pine......0.0400.0400.0750.027
other conifers0.0410.0390.0570.0610.142..0.021
beech0.490.390.2110.1430.0620.3160.25
maple0.1180.1170.1140.0360.0540.0340.19
ash0.0210.1170.1190.0360.0530.1260.110
oak0.0570.0400.0610.140..0.1320.022
chestnut0.0.0.0100......0.3210.021
other broadleaves0.1160.1140.2110.3190.2290.6150.27
total1.361.261.241.581.491.871.33
16-23 cmspruce0.8130.9111.571.6132.1100.6161.24
fir0.7100.4140.490.1360.0550.1330.46
pine0.0460.0520.0510.8240.4270.01000.116
larch0.0.0.0430.0360.6160.2290.4210.111
stone pine......0.2260.2290.0720.019
other conifers0.0370.0320.0460.0640.041..0.018
beech1.090.770.790.1440.1481.0160.75
maple0.3130.3180.3110.1380.0540.1360.28
ash0.1200.2150.2140.1490.1580.2320.29
oak0.1350.1300.0470.143..0.2330.117
chestnut......0.0...1.1170.117
other broadleaves0.2190.3130.3130.6180.4341.3140.47
total3.353.153.544.273.584.963.62
24-35 cmspruce1.8111.8103.963.1114.391.6152.74
fir1.2130.8110.9110.2400.0710.2390.76
pine0.3320.2260.1491.0220.8250.1680.313
larch0.01000.1380.0421.4150.7190.9180.310
stone pine......0.4330.6240.01000.119
other conifers0.0480.1410.0710.0.0.0100..0.029
beech2.691.571.590.2430.1491.5151.55
maple0.5150.4130.7110.0600.1590.1410.47
ash0.3210.5140.4160.2830.1600.2380.410
oak0.2230.3210.0500.158..0.3260.213
chestnut......0.0100..1.5170.217
other broadleaves0.3200.4160.3170.2300.1481.4130.48
total7.356.147.946.976.867.857.22
36-51 cmspruce3.082.976.554.3107.072.6134.53
fir2.491.4101.680.3400.1430.3281.35
pine0.6190.5160.1390.8240.8220.1500.410
larch0.0430.1320.1322.7141.7151.3150.68
stone pine....0.01000.3330.521..0.118
other conifers0.0580.142......0.01000.037
beech4.162.772.080.1520.2471.2162.14
maple0.6130.3150.5120.01000.01000.0470.37
ash0.4201.0130.4160.1870.0580.1400.49
oak0.2210.5160.0420.1720.01000.3310.211
chestnut..0.01000.0720.0100..1.0180.118
other broadleaves0.2340.4170.2200.1450.1410.7160.310
total11.539.8411.538.8710.457.6610.32
>= 52 cmspruce3.293.498.253.7146.0103.6145.14
fir2.4112.5102.390.3430.5350.5281.85
pine0.2300.3200.1400.2490.5270.01000.213
larch0.0730.2270.1354.7132.8151.8160.98
stone pine......0.4370.5310.01000.123
other conifers0.11000.243......0.01000.139
beech1.8112.591.3110.1710.1510.9181.46
maple0.1280.1320.223....0.01000.116
ash0.2260.7170.2260.0100..0.01000.313
oak0.1440.6210.064..0.11000.1520.218
chestnut....0.01000.1100..1.9280.227
other broadleaves0.1530.3350.1490.1580.0710.1390.122
total8.1510.8512.549.5910.579.0810.52
totalspruce9.169.5520.6413.3820.368.61013.92
fir7.075.475.460.9320.6331.2244.44
pine1.0171.0130.4322.9172.6170.2541.08
larch0.1400.4180.3219.5105.4124.4121.96
stone pine....0.01001.4231.8190.1880.315
other conifers0.2390.4280.0380.0550.1390.01000.220
beech9.957.755.860.6370.5375.0126.03
maple1.691.2101.980.2400.1480.3291.25
ash1.1142.591.2120.5530.3530.6291.36
oak0.7171.6130.1310.3410.11000.9200.79
chestnut0.0.0.0800.0810.164..5.9130.713
other broadleaves0.8151.4121.0121.3170.9284.0101.46
total31.5231.0236.6231.0432.7331.1332.91
© WSL, Swiss National Forest Inventory, 29.12.2015 #204450/190713
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