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NFI2
forest area
avalanches SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: %
unit of evaluation: forest
grid: terrestrial grid NFI2
state1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
avalanches SilvaProtecttime of last treatment (classes of 10 years) %± %± %± %± %± %±
n/an/a6.50.85.30.612.91.430.81.545.43.215.50.6
less than 10 years ago55.21.768.81.341.72.023.31.47.31.746.40.8
11-20 years ago23.81.418.71.124.41.713.51.17.51.718.90.6
21-30 years ago8.50.93.70.57.71.17.50.94.91.46.50.4
31-40 years ago2.80.51.40.33.10.75.00.75.91.53.20.3
41-50 years ago0.80.30.80.32.90.73.40.66.01.62.10.2
over 50 years ago2.40.51.30.37.21.016.41.222.92.77.50.4
total100.0.100.0.100.0.100.0.100.0.100.0.
inside perimetern/a7.55.10.0.11.03.712.31.710.33.411.61.4
less than 10 years ago48.210.00.0.36.05.627.22.314.34.027.61.9
11-20 years ago20.38.10.0.24.95.017.01.911.73.717.51.6
21-30 years ago7.55.10.0.13.23.912.31.710.93.612.01.4
31-40 years ago8.25.60.0.4.02.310.61.67.93.19.21.2
41-50 years ago0.0.0.0.2.61.85.21.14.12.44.50.9
over 50 years ago8.25.6100.0.8.33.215.41.840.95.717.71.6
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a6.11.88.52.68.91.214.41.122.81.614.40.7
less than 10 years ago40.33.756.44.643.02.128.31.49.81.229.00.9
11-20 years ago23.13.118.83.623.81.816.91.28.11.116.70.7
21-30 years ago9.52.26.12.211.01.310.11.07.01.09.30.6
31-40 years ago7.11.92.51.44.30.98.70.97.81.17.00.5
41-50 years ago5.11.70.90.82.80.76.50.812.71.36.90.5
over 50 years ago8.82.16.92.36.31.015.21.231.81.816.60.7
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a6.40.75.60.611.00.920.90.827.41.414.80.4
less than 10 years ago52.71.567.71.342.01.426.00.99.51.038.70.5
11-20 years ago23.61.318.71.124.11.215.50.88.30.918.00.5
21-30 years ago8.70.83.90.59.50.89.40.66.80.87.90.3
31-40 years ago3.60.61.50.33.70.57.50.57.40.85.00.3
41-50 years ago1.40.40.80.22.80.55.00.510.41.04.00.2
over 50 years ago3.60.61.90.46.90.715.80.830.31.511.60.4
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 19.06.2020 #853437/319768
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