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NFI2
basal area
rockfall SilvaProtect · main tree species
unit of reference: protection forest region
unit: m²/ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtectmain tree species m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± % m²/ha± %
n/aspruce11.5321.4521.366.11814.974.42113.62
fir5.146.093.7130.3590.5300.6664.24
pine1.380.5400.4361.9263.6140.8501.37
larch0.3160.2370.2406.4143.6122.7181.07
stone pine0.0.0.0.0.1711.6281.7200.0830.216
other conifers0.2210.0650.0530.1930.1450.0.0.118
beech8.134.0144.6110.5600.7270.9395.83
maple1.060.9161.2160.1450.1500.4380.95
ash1.470.6221.2210.3430.2480.5351.16
oak1.580.3420.2400.3300.2720.5401.07
chestnut0.0810.0.0.0.0.3960.11005.6270.326
other broadleaves1.180.8211.0191.2320.7283.5171.16
total31.5134.7333.9419.1826.3419.9930.61
inside perimeterspruce6.83414.23218.3188.82916.9304.83310.812
fir2.7561.2511.9431.8652.5710.8991.627
pine3.9540.8561.6572.0527.1461.0992.126
larch0.6980.9721.2707.6281.4742.4422.721
stone pine0.0.0.1980.0.0.2684.6650.0.0.462
other conifers0.0.0.0.0.1690.0.0.0.0.0.0.070
beech15.32012.2278.1301.0411.9682.4325.815
maple2.2411.1391.2270.1690.0.0.4500.820
ash0.5561.0912.0350.2400.0.0.6430.825
oak0.0980.0980.3990.4690.0.0.6560.339
chestnut0.0.0.0.0.0.0.9600.0.7.5382.337
other broadleaves1.2531.7681.2351.9420.0.4.8212.317
total33.3933.31336.01024.91334.41325.21230.05
outside perimeterspruce7.4920.1417.4613.8620.856.9914.62
fir6.396.775.391.1230.8211.0203.55
pine1.2260.2370.8312.9150.9210.1470.910
larch0.1630.1380.4348.384.0113.692.75
stone pine0.0.0.1940.0.1.2201.1210.0.0.415
other conifers0.1500.0650.0430.0710.1640.01000.029
beech11.065.597.390.7240.8325.0134.85
maple1.8121.2102.1130.3250.2310.2310.96
ash2.4150.6171.2150.2300.2510.4220.78
oak0.5260.2340.1490.1390.1640.8210.313
chestnut0.0.0.0.0.0.0.0710.01004.8111.011
other broadleaves0.8150.8141.1141.0160.6213.191.36
total31.7335.5235.7329.6329.5325.7331.21
totalspruce11.0320.6319.2411.4518.146.2813.92
fir5.246.254.471.0200.7160.9193.83
pine1.370.4280.6232.6122.2120.3371.25
larch0.3150.2250.3267.773.883.381.84
stone pine0.0.0.0880.0711.2161.5140.0840.311
other conifers0.2190.0540.0300.0850.1370.01000.116
beech8.535.076.270.7200.8204.1125.42
maple1.161.191.7100.2220.1270.2220.94
ash1.560.6131.2120.2230.2360.5170.95
oak1.470.2270.2300.2230.1520.7180.76
chestnut0.0810.0.0.0.0.2520.0735.2100.610
other broadleaves1.170.9121.1111.1140.6173.371.34
total31.6135.1234.9226.4328.2224.6330.81
© WSL, Swiss National Forest Inventory, 17.06.2020 #875557/341889
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