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NFI3

forest area: avalanches 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
avalanches 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 ago1.1587.6225.2255.8243.9301.15824.612
11-20 years ago2.2414.0302.1413.4314.2281.15816.914
21-30 years ago1.1581.4501.0582.1411.1581.4508.121
31-40 years ago..2.9352.8352.4382.8351.15811.917
41-50 years ago0.41002.2411.0582.4370.41000.7717.022
over 50 years ago..2.2411.4508.2203.2337.12222.012
total4.72820.21313.41524.41115.51412.41690.56
outside perimeterless than 10 years ago282.9282.6547.1718.21332.0913.516476.32
11-20 years ago64.7731.01020.4128.22021.0127.421152.95
21-30 years ago40.4918.81311.5174.12812.3166.72393.86
31-40 years ago12.51713.3165.5253.4317.7216.02448.58
41-50 years ago7.9216.1244.8268.2205.6259.61942.39
over 50 years ago8.92018.41313.81527.11024.91163.76156.84
total417.41170.22103.2369.35103.63106.94970.61
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 #160156/146535
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