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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
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
fir0.290.2120.1170.0360.0640.0340.16
pine0.0580.0600.0690.1300.1260.01000.017
larch0.0800.0520.0530.2170.1210.1200.112
stone pine......0.0380.1280.01000.022
other conifers0.0290.0590.0620.0610.036..0.019
beech0.360.2130.2150.1320.0370.3150.25
maple0.1120.1190.1230.1270.0370.1330.18
ash0.1140.1250.1230.0330.0420.1240.19
oak0.0400.0690.0580.139..0.0320.022
chestnut0.0100....0.0100..0.3210.021
other broadleaves0.1100.2150.2200.3160.2220.5130.26
total1.241.451.271.471.371.671.32
16-23 cmspruce0.981.581.5101.4131.980.6141.24
fir0.590.5110.3160.1290.1370.1330.36
pine0.0370.0660.0570.6230.3250.01000.115
larch0.0430.0450.0540.6150.2250.5170.210
stone pine......0.1250.2230.01000.018
other conifers0.0250.0820.0420.0640.039..0.019
beech0.860.6120.7130.2320.1320.9160.65
maple0.3110.3150.3170.1260.0400.1300.27
ash0.2120.1200.3200.2340.1460.1300.29
oak0.1230.0470.01000.1370.01000.2310.116
chestnut......0.0100..0.9180.117
other broadleaves0.3110.2180.5230.5170.5241.2120.47
total3.143.453.863.973.564.563.52
24-35 cmspruce1.883.883.692.7113.881.3152.64
fir0.991.1120.7160.2340.0460.1370.66
pine0.2210.1720.2490.8220.5250.0680.212
larch0.0360.0480.0711.2140.6161.1150.48
stone pine......0.3300.522..0.118
other conifers0.0320.0790.01000.0.0.0100..0.028
beech2.061.3121.5120.4300.2301.2151.35
maple0.5100.6150.8160.1340.1420.1380.47
ash0.4120.4240.6180.3530.1520.2340.39
oak0.3160.0560.01000.1470.01000.3250.213
chestnut......0.1710.01001.2170.216
other broadleaves0.3130.2280.3210.3260.1351.3140.48
total6.537.657.866.466.066.956.82
36-51 cmspruce2.966.466.073.7106.172.2134.23
fir1.771.691.7120.4340.2290.3271.25
pine0.5120.2500.1350.6230.6210.1460.49
larch0.1270.0550.1532.3131.4131.2130.67
stone pine..0.0100..0.3290.420..0.117
other conifers0.1380.0100......0.01000.036
beech3.251.7122.4100.2450.4311.0161.94
maple0.4100.4180.7140.1570.1590.0470.38
ash0.7110.2220.6180.1670.0500.1400.49
oak0.4130.0440.1430.0630.0730.2310.211
chestnut0.01000.0100..0.0710.01000.8180.118
other broadleaves0.3150.1290.1350.2330.1310.7150.39
total10.3310.7411.857.869.356.569.72
>= 52 cmspruce3.177.278.493.7135.693.1134.84
fir2.382.7102.1140.3350.4290.4281.75
pine0.3170.1560.0590.1490.4240.0720.213
larch0.1280.1490.1423.7132.2141.7150.98
stone pine......0.4330.330..0.122
other conifers0.1420.0100......0.01000.139
beech2.371.2151.6150.2470.2410.8181.46
maple0.1220.1310.330..0.0610.01000.115
ash0.5150.1390.3330.01000.01000.0710.213
oak0.420..0.1610.01000.1790.1600.218
chestnut......0.1660.01001.6270.226
other broadleaves0.3400.2530.1460.0580.1700.1400.227
total9.6411.7513.068.789.467.7810.02
totalspruce9.0419.6419.8612.0818.257.41013.32
fir5.756.184.9101.0260.7230.9244.04
pine1.0100.4440.4332.2171.9160.1480.98
larch0.2180.2300.3357.9104.5104.5102.16
stone pine..0.0100..1.2211.5170.01000.313
other conifers0.3240.1610.0410.0550.1340.01000.120
beech8.645.096.591.0261.0254.1125.53
maple1.471.6102.1110.4230.3370.3261.15
ash1.980.9171.9140.6360.2410.5261.26
oak1.2110.1320.2380.3350.1710.7190.69
chestnut0.0800.0100..0.3610.01004.8130.613
other broadleaves1.3121.0181.3151.3151.0203.8101.56
total30.7234.8337.5328.1429.5327.2331.41
© WSL, Swiss National Forest Inventory, 29.12.2015 #204470/190733
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