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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago1.15881.8582.85
11-20 years ago0.77134.7935.49
21-30 years ago..13.91513.915
31-40 years ago..8.9208.920
41-50 years ago..6.5236.523
over 50 years ago1.1586.1247.122
total2.935151.82154.72
Eastern Juraless than 10 years ago0.410026.1826.58
11-20 years ago..14.61414.614
21-30 years ago..2.4402.440
31-40 years ago..1.6491.649
41-50 years ago..1.1581.158
over 50 years ago..2.0442.044
total0.410047.8248.22
Western Plateauless than 10 years ago..31.2831.28
11-20 years ago..7.4227.422
21-30 years ago..4.4294.429
31-40 years ago..1.6491.649
41-50 years ago..2.1442.144
over 50 years ago..2.1442.144
total..48.7348.73
Central Plateauless than 10 years ago0.310053.4453.84
11-20 years ago..10.41610.416
21-30 years ago..2.2372.237
31-40 years ago..1.5441.544
41-50 years ago......
over 50 years ago..1.2501.250
total0.310068.8269.12
Eastern Plateauless than 10 years ago..87.6387.63
11-20 years ago..14.71514.715
21-30 years ago..7.1227.122
31-40 years ago..2.1412.141
41-50 years ago..0.41000.4100
over 50 years ago..1.4501.450
total..113.32113.32
Western Pre-Alpsless than 10 years ago0.410017.41217.812
11-20 years ago..10.01810.018
21-30 years ago..5.1265.126
31-40 years ago..4.8264.826
41-50 years ago..3.3323.332
over 50 years ago..4.4284.428
total0.410045.1445.54
Central Pre-Alpsless than 10 years ago0.410045.5745.97
11-20 years ago..25.81025.810
21-30 years ago0.41007.9218.320
31-40 years ago..5.7245.724
41-50 years ago..4.7274.727
over 50 years ago0.7719.71910.418
total1.45099.32100.82
Eastern Pre-Alpsless than 10 years ago0.77132.1932.88
11-20 years ago0.410018.61218.912
21-30 years ago..6.1236.123
31-40 years ago..6.1236.123
41-50 years ago..3.9293.929
over 50 years ago..7.5217.521
total1.15774.3375.33
Northwestern Alpsless than 10 years ago1.15719.01220.012
11-20 years ago0.410010.01810.417
21-30 years ago1.45010.01811.416
31-40 years ago0.41003.6313.930
41-50 years ago..4.6274.627
over 50 years ago1.45011.11712.516
total4.62758.3462.94
Central Alpsless than 10 years ago1.7447.6209.417
11-20 years ago0.7703.4304.127
21-30 years ago0.31003.5313.929
31-40 years ago0.7702.1402.734
41-50 years ago0.31001.4501.744
over 50 years ago0.31006.9217.320
total4.12725.0829.17
Northeastern Alpsless than 10 years ago0.41009.71710.017
11-20 years ago1.1576.4227.520
21-30 years ago0.7705.4246.123
31-40 years ago0.41001.4491.844
41-50 years ago..1.4491.449
over 50 years ago1.1576.5227.520
total3.63030.8634.45
Southwestern Alpsless than 10 years ago2.14122.71124.711
11-20 years ago1.05815.11416.214
21-30 years ago..10.71710.717
31-40 years ago0.31007.9208.320
41-50 years ago1.05810.31811.417
over 50 years ago3.83039.5843.27
total8.220106.23114.43
Southeastern Alpsless than 10 years ago1.15832.8933.89
11-20 years ago0.410027.81028.110
21-30 years ago0.77124.61125.311
31-40 years ago0.410016.11416.514
41-50 years ago0.41009.1199.419
over 50 years ago1.15834.7935.89
total3.930145.02148.92
Southern Alpsless than 10 years ago1.45013.81515.315
11-20 years ago1.1589.91811.017
21-30 years ago0.410013.71614.115
31-40 years ago0.77111.91712.616
41-50 years ago0.7719.1199.818
over 50 years ago7.42183.5591.05
total11.717142.13153.82
Switzerlandless than 10 years ago10.918480.72491.62
11-20 years ago5.625208.74214.44
21-30 years ago3.930117.15121.05
31-40 years ago2.83575.5778.37
41-50 years ago2.53857.9860.47
over 50 years ago16.914216.63233.53
total42.691156.511199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #162032/148411
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