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NFI3

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterless than 10 years ago1.4501.1582.4381.7440.41001.8458.820
11-20 years ago0.7711.8452.1411.0580.7710.7717.022
21-30 years ago0.41001.1581.0580.3100..0.7713.532
31-40 years ago....0.7710.41000.7710.7712.538
41-50 years ago0.7710.41000.7712.437..0.41004.528
over 50 years ago0.41001.8450.7712.4370.41006.02411.617
total3.6326.1247.6218.2202.14110.31837.99
outside perimeterless than 10 years ago282.6289.1549.9722.31135.5912.816492.12
11-20 years ago66.2733.21020.41210.61724.6117.821162.74
21-30 years ago41.1919.11311.5175.82413.3167.42198.46
31-40 years ago12.51716.2147.6215.5259.8186.32358.08
41-50 years ago7.5227.9215.2258.2206.0249.91844.89
over 50 years ago8.62018.81314.51532.9927.71064.86167.24
total418.51184.32109.1385.44116.93109.041023.21
totalless than 10 years ago284.0290.2552.3724.01135.9914.515500.92
11-20 years ago66.9735.0922.51111.71625.3118.520169.84
21-30 years ago41.5920.21312.6166.22313.3168.120101.96
31-40 years ago12.51716.2148.3205.82410.5187.02260.57
41-50 years ago8.2218.3205.92410.6176.02410.31849.38
over 50 years ago8.92020.61315.21435.3828.11070.86178.94
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #160346/146725
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