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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha38.413.5..47.84.745.66.052.37.561.07.649.53.0
101-200 stems/ha53.913.8..33.64.436.75.840.97.429.37.135.82.9
201-300 stems/ha7.77.4..15.03.411.83.96.83.87.34.111.51.9
301-400 stems/ha....2.71.54.42.5..2.42.42.50.9
401-500 stems/ha....0.90.9......0.40.4
501- 600 stems/ha..............
more than 600 stems/ha......1.51.5....0.30.3
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha51.22.256.91.854.01.774.62.962.82.877.42.159.60.9
101-200 stems/ha39.22.133.01.729.41.521.02.728.32.618.11.929.80.8
201-300 stems/ha8.51.28.61.013.11.14.41.47.61.54.21.08.90.5
301-400 stems/ha0.90.41.40.42.60.5..1.30.70.20.21.40.2
401-500 stems/ha0.20.2..0.90.3......0.30.1
501- 600 stems/ha..............
more than 600 stems/ha..0.10.10.10.1......0.10.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha50.92.156.91.853.31.668.02.761.52.675.92.058.80.8
101-200 stems/ha39.52.133.01.729.91.424.62.529.92.519.11.930.30.8
201-300 stems/ha8.51.28.61.013.31.16.11.47.51.44.51.09.10.5
301-400 stems/ha0.90.41.40.42.60.51.00.61.10.60.50.31.50.2
401-500 stems/ha0.20.2..0.90.3......0.30.1
501- 600 stems/ha..............
more than 600 stems/ha..0.10.10.10.10.30.3....0.10.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162001/148380

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha1.845..19.21310.6178.1208.92048.68
101-200 stems/ha2.538..13.5168.6196.4234.32935.210
201-300 stems/ha0.4100..6.0242.7351.1581.15811.318
301-400 stems/ha....1.1581.058..0.41002.438
401-500 stems/ha....0.4100......0.4100
501- 600 stems/ha..............
more than 600 stems/ha......0.3100....0.3100
total4.727..40.1923.31115.61414.61598.26
outside perimeter0-100 stems/ha98.05147.13172.6458.4667.56111.14654.72
101-200 stems/ha75.0685.2594.0516.41330.41026.011327.03
201-300 stems/ha16.21422.31241.993.4318.1206.12498.06
301-400 stems/ha1.8453.5318.221..1.4500.410015.315
401-500 stems/ha0.4100..2.835......3.233
501- 600 stems/ha..............
more than 600 stems/ha..0.41000.4100......0.771
total191.32258.61319.9278.24107.53143.431098.91
total0-100 stems/ha99.84147.13191.8369.0575.75120.03703.42
101-200 stems/ha77.5685.25107.5525.01036.8830.210362.23
201-300 stems/ha16.61422.31247.986.2239.2197.122109.35
301-400 stems/ha1.8453.5319.2191.0581.4500.77117.714
401-500 stems/ha0.4100..3.233......3.632
501- 600 stems/ha..............
more than 600 stems/ha..0.41000.41000.3100....1.158
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162002/148381

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstem count/ha (DBH >= 36cm, classified) %± %± %±
AG0-100 stems/ha..68.04.268.04.2
101-200 stems/ha..31.14.231.14.2
201-300 stems/ha......
301-400 stems/ha..0.80.80.80.8
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
AI0-100 stems/ha..15.110.112.38.4
101-200 stems/ha..31.913.326.011.3
201-300 stems/ha100.0.37.813.749.312.7
301-400 stems/ha..15.110.112.38.4
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
AR0-100 stems/ha..27.99.126.88.8
101-200 stems/ha..32.39.531.19.3
201-300 stems/ha100.0.27.99.130.69.2
301-400 stems/ha..11.96.611.56.4
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
BE0-100 stems/ha54.77.755.52.355.52.2
101-200 stems/ha33.47.330.22.130.52.1
201-300 stems/ha11.95.010.81.410.91.4
301-400 stems/ha..2.40.72.20.7
401-500 stems/ha..1.10.51.00.4
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
BL/BS0-100 stems/ha..55.17.055.17.0
101-200 stems/ha..37.46.837.46.8
201-300 stems/ha..5.53.15.53.1
301-400 stems/ha..2.02.02.02.0
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
FR0-100 stems/ha100.0.49.54.750.84.7
101-200 stems/ha..33.74.532.84.4
201-300 stems/ha..12.43.112.13.0
301-400 stems/ha..3.51.73.51.7
401-500 stems/ha..0.80.80.80.8
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
GE0-100 stems/ha..73.816.773.816.7
101-200 stems/ha..14.814.614.814.6
201-300 stems/ha..11.410.311.410.3
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
GL0-100 stems/ha45.815.152.88.451.27.4
101-200 stems/ha26.713.322.37.023.36.2
201-300 stems/ha18.311.822.17.021.26.0
301-400 stems/ha9.28.82.82.84.33.0
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
GR0-100 stems/ha51.66.362.72.361.32.1
101-200 stems/ha39.16.128.62.129.92.0
201-300 stems/ha7.83.47.61.37.61.2
301-400 stems/ha1.61.51.10.51.20.5
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
JU0-100 stems/ha100.0.44.35.445.65.3
101-200 stems/ha..38.25.337.45.2
201-300 stems/ha..14.03.813.73.7
301-400 stems/ha..3.52.03.41.9
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
LU0-100 stems/ha..51.84.551.04.4
101-200 stems/ha50.035.532.94.233.14.1
201-300 stems/ha..11.92.911.72.9
301-400 stems/ha50.035.52.51.43.21.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.90.90.90.9
total100.0.100.0.100.0.
NE0-100 stems/ha33.327.448.85.548.35.4
101-200 stems/ha66.727.344.15.544.95.4
201-300 stems/ha..7.12.86.82.7
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
NW0-100 stems/ha33.327.847.112.345.011.3
101-200 stems/ha66.727.741.212.245.011.3
201-300 stems/ha..11.88.010.06.9
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
OW0-100 stems/ha70.717.460.27.161.56.6
101-200 stems/ha29.317.427.26.527.56.1
201-300 stems/ha..10.54.59.23.9
301-400 stems/ha......
401-500 stems/ha..2.12.11.81.8
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
SG0-100 stems/ha50.015.845.24.145.54.0
101-200 stems/ha50.015.831.83.832.93.7
201-300 stems/ha..20.93.419.63.2
301-400 stems/ha..1.41.01.30.9
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.70.70.60.6
total100.0.100.0.100.0.
SH0-100 stems/ha..52.88.452.88.4
101-200 stems/ha..38.98.238.98.2
201-300 stems/ha..8.34.78.34.7
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
SO0-100 stems/ha..55.35.455.35.4
101-200 stems/ha..35.35.235.35.2
201-300 stems/ha..9.43.29.43.2
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
SZ0-100 stems/ha28.617.246.05.844.55.6
101-200 stems/ha28.617.237.85.737.05.4
201-300 stems/ha42.918.816.24.318.54.3
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
TG0-100 stems/ha..55.15.955.15.9
101-200 stems/ha..39.45.839.45.8
201-300 stems/ha..4.12.44.12.4
301-400 stems/ha..1.41.41.41.4
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
TI0-100 stems/ha66.79.180.52.279.52.2
101-200 stems/ha25.98.415.42.016.22.0
201-300 stems/ha7.45.03.81.14.11.1
301-400 stems/ha..0.30.30.30.3
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
UR0-100 stems/ha30.014.667.96.961.26.5
101-200 stems/ha40.015.623.66.226.55.9
201-300 stems/ha20.012.76.43.68.83.8
301-400 stems/ha10.09.52.12.13.52.5
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
VD0-100 stems/ha36.414.557.13.156.23.1
101-200 stems/ha54.515.033.83.034.72.9
201-300 stems/ha..7.51.77.21.6
301-400 stems/ha..0.80.60.80.5
401-500 stems/ha9.18.70.80.61.10.7
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
VS0-100 stems/ha45.35.873.52.767.32.6
101-200 stems/ha37.05.721.92.625.22.4
201-300 stems/ha12.33.84.21.36.01.3
301-400 stems/ha4.12.30.40.41.20.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha1.41.4..0.30.3
total100.0.100.0.100.0.
ZG0-100 stems/ha..60.812.960.812.9
101-200 stems/ha..27.011.927.011.9
201-300 stems/ha..12.28.312.28.3
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
ZH0-100 stems/ha..57.94.157.94.1
101-200 stems/ha..34.73.934.73.9
201-300 stems/ha..6.82.16.82.1
301-400 stems/ha..0.70.70.70.7
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
Switzerland0-100 stems/ha49.73.059.60.958.80.8
101-200 stems/ha35.82.929.80.830.30.8
201-300 stems/ha11.31.98.90.59.10.5
301-400 stems/ha2.50.91.40.21.50.2
401-500 stems/ha0.40.40.30.10.30.1
501- 600 stems/ha......
more than 600 stems/ha0.40.40.10.00.10.1
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #162003/148382

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstem count/ha (DBH >= 36cm, classified)1000 ha± %1000 ha± %1000 ha± %
AG0-100 stems/ha..33.4633.46
101-200 stems/ha..15.31415.314
201-300 stems/ha......
301-400 stems/ha..0.41000.4100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..49.1249.12
AI0-100 stems/ha..0.6690.669
101-200 stems/ha..1.4481.448
201-300 stems/ha1.0541.6392.627
301-400 stems/ha..0.6690.669
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total1.0544.3185.212
AR0-100 stems/ha..2.2332.233
101-200 stems/ha..2.6322.632
201-300 stems/ha0.31002.2332.630
301-400 stems/ha..1.0551.055
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total0.31008.178.46
BE0-100 stems/ha7.92088.1596.04
101-200 stems/ha4.82648.0752.87
201-300 stems/ha1.74517.11418.813
301-400 stems/ha..3.8303.830
401-500 stems/ha..1.7451.745
501- 600 stems/ha......
more than 600 stems/ha......
total14.415158.72173.12
BL/BS0-100 stems/ha..11.41311.413
101-200 stems/ha..7.7197.719
201-300 stems/ha..1.1581.158
301-400 stems/ha..0.41000.4100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..20.7520.75
FR0-100 stems/ha1.15720.91022.010
101-200 stems/ha..14.21314.213
201-300 stems/ha..5.2255.225
301-400 stems/ha..1.5491.549
401-500 stems/ha..0.41000.4100
501- 600 stems/ha......
more than 600 stems/ha......
total1.15742.2443.33
GE0-100 stems/ha..2.3272.327
101-200 stems/ha..0.51000.5100
201-300 stems/ha..0.41000.4100
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..3.1203.120
GL0-100 stems/ha1.9437.3199.216
101-200 stems/ha1.1573.1334.228
201-300 stems/ha0.8703.0343.829
301-400 stems/ha0.41000.41000.870
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total4.22813.81118.07
GR0-100 stems/ha11.51798.25109.74
101-200 stems/ha8.72044.7853.57
201-300 stems/ha1.74511.91713.615
301-400 stems/ha0.31001.7452.141
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total22.412156.63179.02
JU0-100 stems/ha0.87014.81215.612
101-200 stems/ha..12.81412.814
201-300 stems/ha..4.7274.727
301-400 stems/ha..1.2571.257
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total0.87033.4334.23
LU0-100 stems/ha..20.8920.89
101-200 stems/ha0.310013.21313.513
201-300 stems/ha..4.8254.825
301-400 stems/ha0.31001.0581.350
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.41000.4100
total0.67040.1340.73
NE0-100 stems/ha0.310013.31213.612
101-200 stems/ha0.67012.01312.613
201-300 stems/ha..1.9401.940
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total1.05727.2528.24
NW0-100 stems/ha0.41003.1293.526
101-200 stems/ha0.8692.7323.526
201-300 stems/ha..0.8690.869
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total1.2556.5137.78
OW0-100 stems/ha1.84410.71412.512
101-200 stems/ha0.7704.9245.622
201-300 stems/ha..1.9431.943
301-400 stems/ha......
401-500 stems/ha..0.41000.4100
501- 600 stems/ha......
more than 600 stems/ha......
total2.53717.8720.45
SG0-100 stems/ha1.84424.21026.010
101-200 stems/ha1.84417.01318.812
201-300 stems/ha..11.21711.217
301-400 stems/ha..0.7700.770
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.41000.4100
total3.63153.5457.14
SH0-100 stems/ha..6.8166.816
101-200 stems/ha..5.0215.021
201-300 stems/ha..1.1561.156
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..12.8312.83
SO0-100 stems/ha..17.81017.810
101-200 stems/ha..11.41511.415
201-300 stems/ha..3.0343.034
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..32.2332.23
SZ0-100 stems/ha0.77012.31413.013
101-200 stems/ha0.77010.11610.915
201-300 stems/ha1.1574.3275.423
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total2.53626.8629.34
TG0-100 stems/ha..11.91111.911
101-200 stems/ha..8.5168.516
201-300 stems/ha..0.9570.957
301-400 stems/ha..0.31000.3100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..21.7421.74
TI0-100 stems/ha6.52391.8498.24
101-200 stems/ha2.53717.51320.012
201-300 stems/ha0.7714.3285.026
301-400 stems/ha..0.41000.4100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total9.719113.93123.62
UR0-100 stems/ha1.05710.51511.514
101-200 stems/ha1.3493.6285.023
201-300 stems/ha0.7701.0571.743
301-400 stems/ha0.31000.31000.770
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total3.33015.41118.78
VD0-100 stems/ha1.55054.9656.46
101-200 stems/ha2.34032.5934.89
201-300 stems/ha..7.2227.222
301-400 stems/ha..0.8710.871
401-500 stems/ha0.41000.8711.158
501- 600 stems/ha......
more than 600 stems/ha......
total4.23096.13100.32
VS0-100 stems/ha11.31765.7577.15
101-200 stems/ha9.31919.51228.810
201-300 stems/ha3.1333.8306.922
301-400 stems/ha1.0580.31001.450
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha0.3100..0.3100
total25.01189.44114.43
ZG0-100 stems/ha..3.9213.921
101-200 stems/ha..1.7441.744
201-300 stems/ha..0.8710.871
301-400 stems/ha......
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..6.376.37
ZH0-100 stems/ha..30.0830.08
101-200 stems/ha..18.01118.011
201-300 stems/ha..3.5313.531
301-400 stems/ha..0.41000.4100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..51.8251.82
Switzerland0-100 stems/ha48.68656.92705.52
101-200 stems/ha35.010327.93362.93
201-300 stems/ha11.11797.86108.95
301-400 stems/ha2.43815.21517.614
401-500 stems/ha0.41003.2333.632
501- 600 stems/ha......
more than 600 stems/ha0.31000.7711.158
total97.861101.711199.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #162004/148383

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified) %± %± %± %± %± %±
inside perimeter0-100 stems/ha38.513.5..51.38.247.93.659.07.949.53.0
101-200 stems/ha53.813.8..32.47.736.33.530.87.435.82.9
201-300 stems/ha7.77.4..13.55.612.12.47.74.311.41.9
301-400 stems/ha....2.72.72.61.22.62.52.50.9
401-500 stems/ha......0.50.5..0.40.4
501- 600 stems/ha............
more than 600 stems/ha......0.50.5..0.40.4
total100.0...100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha51.72.158.11.948.82.164.71.677.22.159.50.9
101-200 stems/ha39.12.132.51.831.81.925.81.418.21.929.80.8
201-300 stems/ha8.31.27.91.115.41.57.90.94.31.08.90.5
301-400 stems/ha0.90.41.20.42.90.71.30.40.30.31.40.2
401-500 stems/ha..0.20.20.90.40.30.2..0.30.1
501- 600 stems/ha............
more than 600 stems/ha..0.20.20.20.2....0.10.0
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha51.42.158.11.948.92.061.91.575.62.158.70.8
101-200 stems/ha39.52.132.51.831.91.927.61.319.31.930.30.8
201-300 stems/ha8.31.27.91.115.31.58.60.84.61.09.10.5
301-400 stems/ha0.90.41.20.42.90.71.50.40.50.31.50.2
401-500 stems/ha..0.20.20.80.40.40.2..0.30.1
501- 600 stems/ha............
more than 600 stems/ha..0.20.20.20.20.10.1..0.10.1
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162005/148384

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha1.845..6.82331.5108.22048.38
101-200 stems/ha2.638..4.32923.9124.32935.010
201-300 stems/ha0.4100..1.8457.9211.15811.218
301-400 stems/ha....0.41001.7450.41002.438
401-500 stems/ha......0.3100..0.3100
501- 600 stems/ha............
more than 600 stems/ha......0.3100..0.3100
total4.727..13.31665.7713.81597.66
outside perimeter0-100 stems/ha102.24134.34101.65207.63108.14653.72
101-200 stems/ha77.4675.2666.3682.7625.511327.13
201-300 stems/ha16.41418.31332.11025.3116.02498.16
301-400 stems/ha1.8452.8356.1244.2290.410015.315
401-500 stems/ha..0.41001.8451.058..3.233
501- 600 stems/ha............
more than 600 stems/ha..0.41000.4100....0.771
total197.82231.31208.32320.82139.931098.11
total0-100 stems/ha104.04134.34108.54239.13116.24702.12
101-200 stems/ha79.9575.2670.66106.6529.710362.13
201-300 stems/ha16.81418.31333.91033.3107.122109.35
301-400 stems/ha1.8452.8356.5235.9240.77117.714
401-500 stems/ha..0.41001.8451.450..3.532
501- 600 stems/ha............
more than 600 stems/ha..0.41000.41000.3100..1.158
total202.61231.31221.62386.51153.821195.81

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162006/148385

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha38.413.555.96.537.27.445.35.853.96.959.07.949.63.0
101-200 stems/ha53.913.833.96.232.67.237.05.738.46.730.87.435.82.9
201-300 stems/ha7.77.46.83.325.56.612.33.87.73.77.74.311.41.9
301-400 stems/ha..1.71.74.63.24.12.3..2.62.52.50.9
401-500 stems/ha..1.71.7........0.40.4
501- 600 stems/ha..............
more than 600 stems/ha......1.41.4....0.30.3
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha55.21.455.12.248.62.773.52.762.52.577.22.159.60.9
101-200 stems/ha35.51.429.72.030.12.421.92.628.32.318.21.929.80.8
201-300 stems/ha8.10.810.91.418.52.14.21.37.81.44.31.08.90.5
301-400 stems/ha1.10.32.90.72.30.80.40.41.30.60.30.31.40.2
401-500 stems/ha0.10.11.30.50.30.3......0.30.1
501- 600 stems/ha..............
more than 600 stems/ha0.10.1..0.30.3......0.10.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha55.01.455.22.147.32.567.32.661.52.475.62.158.80.8
101-200 stems/ha35.71.430.21.930.42.325.22.429.52.219.31.930.30.8
201-300 stems/ha8.10.810.51.319.32.06.01.37.81.34.61.09.10.5
301-400 stems/ha1.10.32.80.72.50.81.20.61.20.50.50.31.50.2
401-500 stems/ha0.10.11.40.50.30.3......0.30.1
501- 600 stems/ha..............
more than 600 stems/ha0.10.1..0.30.30.30.3....0.10.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162007/148386

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 36cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha1.84511.9175.52511.3179.9188.22048.68
101-200 stems/ha2.5387.2224.8269.3197.0224.32935.110
201-300 stems/ha0.41001.4503.8303.1331.4501.15811.118
301-400 stems/ha..0.41000.7711.058..0.41002.438
401-500 stems/ha..0.4100........0.4100
501- 600 stems/ha..............
more than 600 stems/ha......0.3100....0.3100
total4.72821.31214.91525.01118.31313.81598.06
outside perimeter0-100 stems/ha236.83103.5559.0665.7581.75108.14654.82
101-200 stems/ha152.4455.9736.6919.51237.0925.511326.93
201-300 stems/ha34.71020.61322.5123.83010.2186.02497.86
301-400 stems/ha4.6285.4262.8350.31001.8450.410015.315
401-500 stems/ha0.41002.5380.3100......3.233
501- 600 stems/ha..............
more than 600 stems/ha0.4100..0.3100......0.771
total429.31187.92121.6389.44130.63139.931098.71
total0-100 stems/ha238.63115.4464.6677.1591.54116.24703.42
101-200 stems/ha154.9463.1641.5828.81044.0829.710362.03
201-300 stems/ha35.11022.01226.3106.92211.6177.122108.95
301-400 stems/ha4.6285.8253.4311.4501.8450.77117.714
401-500 stems/ha0.41002.9350.3100......3.632
501- 600 stems/ha..............
more than 600 stems/ha0.4100..0.31000.3100....1.058
total434.01209.22136.52114.43148.92153.821196.71

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162008/148387

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstem count/ha (DBH >= 36cm, classified) %± %± %±
Western Jura0-100 stems/ha38.313.550.92.450.62.4
101-200 stems/ha54.013.839.62.440.02.4
201-300 stems/ha7.77.48.61.48.51.3
301-400 stems/ha..1.00.50.90.5
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Eastern Jura0-100 stems/ha..54.24.554.24.5
101-200 stems/ha..37.84.437.84.4
201-300 stems/ha..7.32.37.32.3
301-400 stems/ha..0.80.80.80.8
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
Western Plateau0-100 stems/ha..51.34.651.34.6
101-200 stems/ha..34.44.434.44.4
201-300 stems/ha..11.73.011.73.0
301-400 stems/ha..1.71.21.71.2
401-500 stems/ha..0.80.80.80.8
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
Central Plateau0-100 stems/ha..60.43.360.43.3
101-200 stems/ha..28.73.028.73.0
201-300 stems/ha..9.42.09.42.0
301-400 stems/ha..0.90.60.90.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.50.50.50.5
total..100.0.100.0.
Eastern Plateau0-100 stems/ha..59.02.859.02.8
101-200 stems/ha..34.42.734.42.7
201-300 stems/ha..5.41.35.41.3
301-400 stems/ha..1.30.61.30.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
Western Pre-Alps0-100 stems/ha77.714.050.94.752.84.5
101-200 stems/ha22.314.029.04.328.54.1
201-300 stems/ha..14.93.313.83.1
301-400 stems/ha..3.51.73.31.6
401-500 stems/ha..1.71.21.61.1
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Central Pre-Alps0-100 stems/ha50.011.253.63.153.43.0
101-200 stems/ha45.011.132.92.933.82.8
201-300 stems/ha..9.61.88.91.7
301-400 stems/ha5.04.92.71.02.81.0
401-500 stems/ha..1.10.71.10.6
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Eastern Pre-Alps0-100 stems/ha25.015.341.43.540.83.4
101-200 stems/ha12.511.732.03.331.33.2
201-300 stems/ha62.517.123.23.024.63.0
301-400 stems/ha..3.01.22.81.1
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.50.50.50.5
total100.0.100.0.100.0.
Northwestern Alps0-100 stems/ha53.39.161.04.059.73.7
101-200 stems/ha30.08.424.63.625.63.3
201-300 stems/ha13.36.210.32.510.82.3
301-400 stems/ha..2.81.42.31.1
401-500 stems/ha3.33.31.41.01.71.0
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Central Alps0-100 stems/ha35.611.758.66.054.05.4
101-200 stems/ha35.111.628.15.529.55.0
201-300 stems/ha23.410.310.33.713.03.7
301-400 stems/ha5.95.71.51.52.41.7
401-500 stems/ha..1.51.51.21.2
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Northeastern Alps0-100 stems/ha44.411.756.45.654.25.1
101-200 stems/ha38.911.528.25.130.24.7
201-300 stems/ha11.17.414.14.013.53.5
301-400 stems/ha5.65.41.31.32.11.5
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Southwestern Alps0-100 stems/ha45.35.873.52.767.32.6
101-200 stems/ha37.05.721.92.625.22.4
201-300 stems/ha12.33.84.21.36.01.3
301-400 stems/ha4.12.30.40.41.20.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha1.41.4..0.30.3
total100.0.100.0.100.0.
Southeastern Alps0-100 stems/ha53.96.962.52.561.52.4
101-200 stems/ha38.46.728.32.329.52.2
201-300 stems/ha7.73.77.81.47.81.3
301-400 stems/ha..1.30.61.20.5
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Southern Alps0-100 stems/ha59.07.977.22.175.62.1
101-200 stems/ha30.87.418.21.919.31.9
201-300 stems/ha7.74.34.31.04.61.0
301-400 stems/ha2.62.50.30.30.50.3
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total100.0.100.0.100.0.
Switzerland0-100 stems/ha49.63.059.40.958.60.8
101-200 stems/ha35.82.929.90.830.30.8
201-300 stems/ha11.41.98.90.59.10.5
301-400 stems/ha2.50.91.40.21.50.2
401-500 stems/ha0.40.40.30.10.30.1
501- 600 stems/ha......
more than 600 stems/ha0.30.30.10.00.10.1
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162009/148388

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 36cm, classified) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstem count/ha (DBH >= 36cm, classified)1000 ha± %1000 ha± %1000 ha± %
Western Jura0-100 stems/ha1.84576.4578.25
101-200 stems/ha2.53859.3661.96
201-300 stems/ha0.410012.81613.216
301-400 stems/ha..1.4501.450
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total4.627150.02154.72
Eastern Jura0-100 stems/ha..26.1826.18
101-200 stems/ha..18.21218.212
201-300 stems/ha..3.5333.533
301-400 stems/ha..0.41000.4100
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..48.2248.22
Western Plateau0-100 stems/ha..25.01025.010
101-200 stems/ha..16.81316.813
201-300 stems/ha..5.7265.726
301-400 stems/ha..0.8700.870
401-500 stems/ha..0.41000.4100
501- 600 stems/ha......
more than 600 stems/ha......
total..48.7348.73
Central Plateau0-100 stems/ha..41.7641.76
101-200 stems/ha..19.81119.811
201-300 stems/ha..6.5216.521
301-400 stems/ha..0.6710.671
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.41000.4100
total..69.1269.12
Eastern Plateau0-100 stems/ha..66.9566.95
101-200 stems/ha..39.0839.08
201-300 stems/ha..6.1246.124
301-400 stems/ha..1.4501.450
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..113.32113.32
Western Pre-Alps0-100 stems/ha2.63721.41024.09
101-200 stems/ha0.77012.21513.014
201-300 stems/ha..6.3236.323
301-400 stems/ha..1.5491.549
401-500 stems/ha..0.7710.771
501- 600 stems/ha......
more than 600 stems/ha......
total3.33342.1445.54
Central Pre-Alps0-100 stems/ha3.63150.2653.86
101-200 stems/ha3.23330.8934.19
201-300 stems/ha..9.0199.019
301-400 stems/ha0.41002.5382.935
401-500 stems/ha..1.1581.158
501- 600 stems/ha......
more than 600 stems/ha......
total7.22293.63100.82
Eastern Pre-Alps0-100 stems/ha0.77130.0930.79
101-200 stems/ha0.410023.21123.611
201-300 stems/ha1.84416.81318.612
301-400 stems/ha..2.1402.140
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.41000.4100
total2.93572.5375.33
Northwestern Alps0-100 stems/ha5.72431.8837.67
101-200 stems/ha3.23312.91516.113
201-300 stems/ha1.4505.4256.822
301-400 stems/ha..1.4501.450
401-500 stems/ha0.41000.7711.157
501- 600 stems/ha......
more than 600 stems/ha......
total10.71752.2562.94
Central Alps0-100 stems/ha2.14013.61415.713
101-200 stems/ha2.1406.5218.618
201-300 stems/ha1.4492.4373.829
301-400 stems/ha0.31000.31000.770
401-500 stems/ha..0.31000.3100
501- 600 stems/ha......
more than 600 stems/ha......
total5.92323.3929.17
Northeastern Alps0-100 stems/ha2.93415.81218.611
101-200 stems/ha2.5377.91910.416
201-300 stems/ha0.7703.9294.726
301-400 stems/ha0.41000.41000.770
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total6.42227.9734.45
Southwestern Alps0-100 stems/ha11.31765.7577.15
101-200 stems/ha9.31919.51228.810
201-300 stems/ha3.1333.8306.922
301-400 stems/ha1.0580.31001.450
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha0.3100..0.3100
total25.01189.44114.43
Southeastern Alps0-100 stems/ha9.91881.7591.54
101-200 stems/ha7.02237.0944.08
201-300 stems/ha1.45010.21811.617
301-400 stems/ha..1.8451.845
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total18.313130.63148.92
Southern Alps0-100 stems/ha8.220108.14116.24
101-200 stems/ha4.32925.51129.710
201-300 stems/ha1.1586.0247.122
301-400 stems/ha0.41000.41000.771
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total13.815139.93153.82
Switzerland0-100 stems/ha48.78654.52703.12
101-200 stems/ha35.210328.63363.83
201-300 stems/ha11.21898.46109.65
301-400 stems/ha2.43815.41517.914
401-500 stems/ha0.41003.3333.632
501- 600 stems/ha......
more than 600 stems/ha0.31000.7711.158
total98.261100.911199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162010/148389

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha....8.82.76.02.96.83.812.35.17.91.6
101-200 stems/ha....12.43.14.42.513.75.222.06.511.51.9
201-300 stems/ha15.510.1..15.93.425.05.327.36.712.25.119.32.4
301-400 stems/ha15.410.0..13.33.216.24.511.44.817.05.914.32.1
401-500 stems/ha15.410.0..16.83.520.64.911.44.87.34.115.32.2
501-600 stems/ha15.410.0..8.02.54.42.513.65.29.74.68.61.7
more than 600 stems/ha38.413.5..24.84.123.55.115.95.519.56.222.92.5
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha8.71.210.41.112.51.120.32.715.42.116.21.812.60.6
101-200 stems/ha15.31.616.41.411.41.115.82.415.72.111.91.614.10.6
201-300 stems/ha14.71.518.11.415.81.214.92.417.12.211.61.615.70.7
301-400 stems/ha17.71.717.61.415.31.28.31.811.21.813.61.715.20.6
401-500 stems/ha12.81.512.61.211.81.111.82.113.52.011.41.612.30.6
501-600 stems/ha10.91.49.31.19.91.07.01.77.21.58.91.49.40.5
more than 600 stems/ha20.01.715.61.323.31.421.92.720.02.326.32.220.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha8.51.210.41.112.11.017.02.214.31.915.81.712.30.6
101-200 stems/ha14.91.516.41.411.51.013.22.015.41.912.81.613.80.6
201-300 stems/ha14.71.518.11.415.81.117.22.218.42.111.71.515.90.6
301-400 stems/ha17.61.617.61.415.11.110.11.811.21.714.01.615.10.6
401-500 stems/ha12.91.412.61.212.31.013.82.013.21.811.01.512.50.6
501-600 stems/ha11.01.39.31.19.70.96.41.48.01.59.01.49.30.5
more than 600 stems/ha20.41.715.61.323.51.322.32.419.52.125.72.121.00.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162011/148390

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha....3.5311.4501.1581.8457.821
101-200 stems/ha....5.0271.0582.1413.23311.318
201-300 stems/ha0.771..6.4235.8244.2281.84518.913
301-400 stems/ha0.771..5.3263.8301.8442.53814.116
401-500 stems/ha0.771..6.7234.8261.8441.15815.115
501-600 stems/ha0.771..3.2331.0582.1411.4508.520
more than 600 stems/ha1.845..9.9195.5242.5372.83522.512
total4.727..40.1923.31115.61414.61598.26
outside perimeter0-100 stems/ha16.61426.91140.0915.81416.51423.212139.05
101-200 stems/ha29.21042.5836.6912.41616.91417.014154.45
201-300 stems/ha28.11146.7850.5811.61618.31316.714172.04
301-400 stems/ha33.9945.6849.086.52212.01619.613166.54
401-500 stems/ha24.51132.51037.799.31914.51516.414134.85
501-600 stems/ha20.91224.11231.7105.5247.82112.816102.86
more than 600 stems/ha38.2940.3974.5617.11321.51237.79229.44
total191.32258.61319.9278.24107.53143.431098.91
total0-100 stems/ha16.61426.91143.5917.21317.61325.011146.85
101-200 stems/ha29.21042.5841.5913.41519.01320.213165.84
201-300 stems/ha28.81046.7856.9717.51322.61218.513190.94
301-400 stems/ha34.6945.6854.3810.31813.81522.012180.64
401-500 stems/ha25.21132.51044.4814.01516.21417.414149.95
501-600 stems/ha21.61224.11234.9106.5229.91814.315111.25
more than 600 stems/ha40.0940.3984.5622.61124.01140.68252.03
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162012/148391

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstem count/ha (DBH >= 12cm, classified) %± %± %±
AG0-100 stems/ha..16.43.416.43.4
101-200 stems/ha..23.03.823.03.8
201-300 stems/ha..18.93.518.93.5
301-400 stems/ha..17.23.417.23.4
401-500 stems/ha..4.92.04.92.0
501-600 stems/ha..7.42.47.42.4
more than 600 stems/ha..12.33.012.33.0
total..100.0.100.0.
AI0-100 stems/ha..15.110.112.38.4
101-200 stems/ha......
201-300 stems/ha......
301-400 stems/ha33.328.030.313.030.811.8
401-500 stems/ha66.727.915.110.124.711.0
501-600 stems/ha..16.810.813.78.9
more than 600 stems/ha..22.711.918.59.9
total100.0.100.0.100.0.
AR0-100 stems/ha..8.05.57.75.3
101-200 stems/ha..4.04.03.83.8
201-300 stems/ha..11.96.611.56.4
301-400 stems/ha..15.97.415.37.2
401-500 stems/ha100.0.12.46.815.87.3
501-600 stems/ha..19.98.119.17.8
more than 600 stems/ha..27.99.126.88.8
total100.0.100.0.100.0.
BE0-100 stems/ha11.95.011.51.511.51.4
101-200 stems/ha16.85.814.31.614.51.6
201-300 stems/ha14.45.415.31.715.21.6
301-400 stems/ha11.95.017.71.817.21.7
401-500 stems/ha19.06.011.21.511.91.4
501-600 stems/ha9.54.511.41.511.31.4
more than 600 stems/ha16.65.718.51.818.41.7
total100.0.100.0.100.0.
BL/BS0-100 stems/ha..3.92.83.92.8
101-200 stems/ha..15.75.115.75.1
201-300 stems/ha..17.75.417.75.4
301-400 stems/ha..23.66.023.66.0
401-500 stems/ha..13.84.913.84.9
501-600 stems/ha..7.93.87.93.8
more than 600 stems/ha..17.35.317.35.3
total..100.0.100.0.
FR0-100 stems/ha33.327.311.43.012.03.0
101-200 stems/ha..15.13.414.73.3
201-300 stems/ha..12.43.112.13.0
301-400 stems/ha..15.13.414.73.3
401-500 stems/ha..11.53.011.22.9
501-600 stems/ha33.327.38.92.79.52.7
more than 600 stems/ha33.327.325.64.125.84.1
total100.0.100.0.100.0.
GE0-100 stems/ha..29.518.729.518.7
101-200 stems/ha..14.814.614.814.6
201-300 stems/ha......
301-400 stems/ha..14.814.614.814.6
401-500 stems/ha..14.814.614.814.6
501-600 stems/ha..26.216.926.216.9
more than 600 stems/ha......
total..100.0.100.0.
GL0-100 stems/ha9.28.816.76.315.05.3
101-200 stems/ha9.28.810.95.210.54.5
201-300 stems/ha27.513.611.25.315.05.3
301-400 stems/ha17.511.314.05.814.85.2
401-500 stems/ha..11.25.38.64.1
501-600 stems/ha..19.56.715.05.3
more than 600 stems/ha36.714.716.56.221.26.0
total100.0.100.0.100.0.
GR0-100 stems/ha7.83.414.41.713.61.5
101-200 stems/ha15.74.615.61.715.61.6
201-300 stems/ha25.05.415.61.716.81.7
301-400 stems/ha10.93.915.21.714.61.6
401-500 stems/ha10.93.913.11.612.81.5
501-600 stems/ha10.93.98.51.38.81.3
more than 600 stems/ha18.74.917.61.817.71.7
total100.0.100.0.100.0.
JU0-100 stems/ha..9.33.29.13.1
101-200 stems/ha..12.83.612.53.5
201-300 stems/ha..12.83.612.53.5
301-400 stems/ha..18.64.218.24.1
401-500 stems/ha..17.44.117.04.0
501-600 stems/ha50.035.59.33.210.33.3
more than 600 stems/ha50.035.519.74.320.44.3
total100.0.100.0.100.0.
LU0-100 stems/ha..5.52.05.42.0
101-200 stems/ha..9.42.69.22.6
201-300 stems/ha..22.13.721.73.6
301-400 stems/ha50.035.516.63.317.13.3
401-500 stems/ha..12.52.912.32.9
501-600 stems/ha..7.02.36.92.2
more than 600 stems/ha50.035.526.94.027.33.9
total100.0.100.0.100.0.
NE0-100 stems/ha..6.42.86.22.7
101-200 stems/ha..9.43.29.13.1
201-300 stems/ha33.327.420.04.420.54.3
301-400 stems/ha66.727.323.54.625.04.6
401-500 stems/ha..11.83.511.43.4
501-600 stems/ha..12.03.611.63.5
more than 600 stems/ha..16.84.116.24.0
total100.0.100.0.100.0.
NW0-100 stems/ha..5.95.85.05.0
101-200 stems/ha..5.95.85.05.0
201-300 stems/ha..17.69.415.08.2
301-400 stems/ha33.327.811.88.015.08.2
401-500 stems/ha33.327.811.88.015.08.2
501-600 stems/ha33.327.811.88.015.08.2
more than 600 stems/ha..35.311.830.010.5
total100.0.100.0.100.0.
OW0-100 stems/ha..14.55.112.74.5
101-200 stems/ha..10.54.59.23.9
201-300 stems/ha29.317.410.34.412.74.5
301-400 stems/ha26.716.114.75.216.25.0
401-500 stems/ha14.713.610.54.511.04.3
501-600 stems/ha..6.33.55.53.1
more than 600 stems/ha29.317.433.36.932.86.4
total100.0.100.0.100.0.
SG0-100 stems/ha..11.42.610.72.5
101-200 stems/ha20.012.78.82.39.52.3
201-300 stems/ha20.012.720.33.320.33.2
301-400 stems/ha10.09.512.82.812.72.7
401-500 stems/ha10.09.515.53.015.22.9
501-600 stems/ha10.09.58.82.38.92.3
more than 600 stems/ha30.014.522.33.422.83.3
total100.0.100.0.100.0.
SH0-100 stems/ha..2.82.82.82.8
101-200 stems/ha..13.95.813.95.8
201-300 stems/ha..19.46.719.46.7
301-400 stems/ha..16.76.316.76.3
401-500 stems/ha..11.15.311.15.3
501-600 stems/ha..5.63.95.63.9
more than 600 stems/ha..30.67.830.67.8
total..100.0.100.0.
SO0-100 stems/ha..11.83.511.83.5
101-200 stems/ha..15.33.915.33.9
201-300 stems/ha..18.84.318.84.3
301-400 stems/ha..10.63.410.63.4
401-500 stems/ha..10.63.410.63.4
501-600 stems/ha..12.93.712.93.7
more than 600 stems/ha..20.04.420.04.4
total..100.0.100.0.
SZ0-100 stems/ha14.313.39.53.49.93.3
101-200 stems/ha14.313.38.13.28.63.1
201-300 stems/ha..23.04.921.04.6
301-400 stems/ha28.617.217.54.418.54.3
401-500 stems/ha..13.54.012.43.7
501-600 stems/ha14.313.38.13.28.63.1
more than 600 stems/ha28.617.220.34.721.04.6
total100.0.100.0.100.0.
TG0-100 stems/ha..8.33.38.33.3
101-200 stems/ha..14.24.214.24.2
201-300 stems/ha..21.14.921.14.9
301-400 stems/ha..6.93.06.93.0
401-500 stems/ha..16.54.416.54.4
501-600 stems/ha..13.84.113.84.1
more than 600 stems/ha..19.34.719.34.7
total..100.0.100.0.
TI0-100 stems/ha14.96.916.52.116.42.0
101-200 stems/ha22.28.011.61.812.41.8
201-300 stems/ha11.16.011.01.811.01.7
301-400 stems/ha18.57.512.21.812.71.8
401-500 stems/ha3.73.611.61.811.01.7
501-600 stems/ha11.16.08.51.68.71.5
more than 600 stems/ha18.57.528.62.527.82.4
total100.0.100.0.100.0.
UR0-100 stems/ha10.09.615.65.414.64.8
101-200 stems/ha10.09.510.74.610.64.1
201-300 stems/ha20.012.78.94.310.84.2
301-400 stems/ha..4.33.03.52.5
401-500 stems/ha30.014.610.74.614.14.7
501-600 stems/ha..13.15.010.84.2
more than 600 stems/ha30.014.636.77.135.56.4
total100.0.100.0.100.0.
VD0-100 stems/ha..10.21.99.81.8
101-200 stems/ha9.18.718.82.418.42.4
201-300 stems/ha18.211.613.42.113.62.1
301-400 stems/ha..16.22.315.52.2
401-500 stems/ha18.211.612.22.112.42.0
501-600 stems/ha9.18.78.71.88.71.7
more than 600 stems/ha45.515.020.52.521.62.5
total100.0.100.0.100.0.
VS0-100 stems/ha5.62.720.52.517.22.1
101-200 stems/ha4.12.315.42.212.91.8
201-300 stems/ha23.34.914.62.216.52.0
301-400 stems/ha15.14.28.51.79.91.6
401-500 stems/ha21.94.812.32.014.41.9
501-600 stems/ha5.52.76.11.56.01.3
more than 600 stems/ha24.65.022.62.623.12.3
total100.0.100.0.100.0.
ZG0-100 stems/ha..13.59.213.59.2
101-200 stems/ha..6.86.86.86.8
201-300 stems/ha..20.310.820.310.8
301-400 stems/ha..13.59.213.59.2
401-500 stems/ha..27.011.927.011.9
501-600 stems/ha......
more than 600 stems/ha..18.910.218.910.2
total..100.0.100.0.
ZH0-100 stems/ha..10.92.610.92.6
101-200 stems/ha..17.73.217.73.2
201-300 stems/ha..19.13.219.13.2
301-400 stems/ha..21.13.421.13.4
401-500 stems/ha..12.32.712.32.7
501-600 stems/ha..9.52.49.52.4
more than 600 stems/ha..9.52.49.52.4
total..100.0.100.0.
Switzerland0-100 stems/ha7.91.612.70.612.30.6
101-200 stems/ha11.51.914.20.613.90.6
201-300 stems/ha19.42.415.60.715.90.6
301-400 stems/ha14.22.115.20.615.10.6
401-500 stems/ha15.22.112.20.612.50.6
501-600 stems/ha8.71.79.30.59.30.5
more than 600 stems/ha23.12.520.80.721.00.7
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #162013/148392

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstem count/ha (DBH >= 12cm, classified)1000 ha± %1000 ha± %1000 ha± %
AG0-100 stems/ha..8.0218.021
101-200 stems/ha..11.31711.317
201-300 stems/ha..9.3199.319
301-400 stems/ha..8.5208.520
401-500 stems/ha..2.4402.440
501-600 stems/ha..3.6323.632
more than 600 stems/ha..6.0246.024
total..49.1249.12
AI0-100 stems/ha..0.6690.669
101-200 stems/ha......
201-300 stems/ha......
301-400 stems/ha0.31001.3451.639
401-500 stems/ha0.6690.6691.345
501-600 stems/ha..0.7710.771
more than 600 stems/ha..1.0541.054
total1.0544.3185.212
AR0-100 stems/ha..0.6690.669
101-200 stems/ha..0.31000.3100
201-300 stems/ha..1.0551.055
301-400 stems/ha..1.3471.347
401-500 stems/ha0.31001.0571.349
501-600 stems/ha..1.6411.641
more than 600 stems/ha..2.2332.233
total0.31008.178.46
BE0-100 stems/ha1.74518.31320.013
101-200 stems/ha2.43822.61225.011
201-300 stems/ha2.14124.31126.411
301-400 stems/ha1.74528.11029.810
401-500 stems/ha2.73517.81320.612
501-600 stems/ha1.45018.21319.513
more than 600 stems/ha2.43829.41031.810
total14.415158.72173.12
BL/BS0-100 stems/ha..0.8700.870
101-200 stems/ha..3.3333.333
201-300 stems/ha..3.7313.731
301-400 stems/ha..4.9264.926
401-500 stems/ha..2.9362.936
501-600 stems/ha..1.6491.649
more than 600 stems/ha..3.6313.631
total..20.7520.75
FR0-100 stems/ha0.41004.8275.226
101-200 stems/ha..6.4236.423
201-300 stems/ha..5.2255.225
301-400 stems/ha..6.4236.423
401-500 stems/ha..4.9264.926
501-600 stems/ha0.41003.7304.129
more than 600 stems/ha0.410010.81711.216
total1.15742.2443.33
GE0-100 stems/ha..0.9650.965
101-200 stems/ha..0.51000.5100
201-300 stems/ha......
301-400 stems/ha..0.51000.5100
401-500 stems/ha..0.51000.5100
501-600 stems/ha..0.8710.871
more than 600 stems/ha......
total..3.1203.120
GL0-100 stems/ha0.41002.3392.736
101-200 stems/ha0.41001.5491.944
201-300 stems/ha1.2571.5492.736
301-400 stems/ha0.7711.9432.736
401-500 stems/ha..1.5491.549
501-600 stems/ha..2.7362.736
more than 600 stems/ha1.5492.3403.829
total4.22813.81118.07
GR0-100 stems/ha1.74522.61224.411
101-200 stems/ha3.53124.41127.911
201-300 stems/ha5.62524.41130.010
301-400 stems/ha2.43823.81126.211
401-500 stems/ha2.43820.51223.012
501-600 stems/ha2.43813.31615.714
more than 600 stems/ha4.22927.61131.810
total22.412156.63179.02
JU0-100 stems/ha..3.1343.134
101-200 stems/ha..4.3284.328
201-300 stems/ha..4.3284.328
301-400 stems/ha..6.2236.223
401-500 stems/ha..5.8245.824
501-600 stems/ha0.41003.1343.532
more than 600 stems/ha0.41006.6227.021
total0.87033.4334.23
LU0-100 stems/ha..2.2372.237
101-200 stems/ha..3.8283.828
201-300 stems/ha..8.8178.817
301-400 stems/ha0.31006.7207.020
401-500 stems/ha..5.0245.024
501-600 stems/ha..2.8322.832
more than 600 stems/ha0.310010.81511.115
total0.67040.1340.73
NE0-100 stems/ha..1.8451.845
101-200 stems/ha..2.6342.634
201-300 stems/ha0.31005.4225.821
301-400 stems/ha0.6706.4207.019
401-500 stems/ha..3.2303.230
501-600 stems/ha..3.3303.330
more than 600 stems/ha..4.6254.625
total1.05727.2528.24
NW0-100 stems/ha..0.41000.4100
101-200 stems/ha..0.41000.4100
201-300 stems/ha..1.2551.255
301-400 stems/ha0.41000.8691.255
401-500 stems/ha0.41000.8691.255
501-600 stems/ha0.41000.8691.255
more than 600 stems/ha..2.3362.336
total1.2556.5137.78
OW0-100 stems/ha..2.6362.636
101-200 stems/ha..1.9431.943
201-300 stems/ha0.7701.8442.636
301-400 stems/ha0.7702.6363.332
401-500 stems/ha0.41001.9432.239
501-600 stems/ha..1.1571.157
more than 600 stems/ha0.7705.9226.720
total2.53717.8720.45
SG0-100 stems/ha..6.1246.124
101-200 stems/ha0.7704.7275.425
201-300 stems/ha0.77010.81711.616
301-400 stems/ha0.41006.9227.221
401-500 stems/ha0.41008.3208.719
501-600 stems/ha0.41004.7275.126
more than 600 stems/ha1.15711.91613.015
total3.63153.5457.14
SH0-100 stems/ha..0.41000.4100
101-200 stems/ha..1.8421.842
201-300 stems/ha..2.5342.534
301-400 stems/ha..2.1382.138
401-500 stems/ha..1.4481.448
501-600 stems/ha..0.7700.770
more than 600 stems/ha..3.9263.926
total..12.8312.83
SO0-100 stems/ha..3.8313.831
101-200 stems/ha..4.9264.926
201-300 stems/ha..6.1236.123
301-400 stems/ha..3.4323.432
401-500 stems/ha..3.4323.432
501-600 stems/ha..4.2294.229
more than 600 stems/ha..6.4226.422
total..32.2332.23
SZ0-100 stems/ha0.41002.5372.934
101-200 stems/ha0.41002.2402.536
201-300 stems/ha..6.2226.222
301-400 stems/ha0.7704.7265.423
401-500 stems/ha..3.6303.630
501-600 stems/ha0.41002.2402.536
more than 600 stems/ha0.7705.4246.222
total2.53626.8629.34
TG0-100 stems/ha..1.8391.839
101-200 stems/ha..3.1303.130
201-300 stems/ha..4.6244.624
301-400 stems/ha..1.5431.543
401-500 stems/ha..3.6273.627
501-600 stems/ha..3.0303.030
more than 600 stems/ha..4.2244.224
total..21.7421.74
TI0-100 stems/ha1.45018.81320.213
101-200 stems/ha2.14113.21615.415
201-300 stems/ha1.15812.51613.616
301-400 stems/ha1.84413.91515.714
401-500 stems/ha0.410013.31613.615
501-600 stems/ha1.1589.71910.718
more than 600 stems/ha1.84432.6934.49
total9.719113.93123.62
UR0-100 stems/ha0.31002.4372.735
101-200 stems/ha0.31001.7432.039
201-300 stems/ha0.7701.4502.040
301-400 stems/ha..0.7700.770
401-500 stems/ha1.0571.7432.634
501-600 stems/ha..2.0402.040
more than 600 stems/ha1.0575.7226.620
total3.33015.41118.78
VD0-100 stems/ha..9.8199.819
101-200 stems/ha0.410018.01418.413
201-300 stems/ha0.87112.91613.716
301-400 stems/ha..15.61415.614
401-500 stems/ha0.87111.71712.516
501-600 stems/ha0.41008.3218.720
more than 600 stems/ha1.94419.71321.612
total4.23096.13100.32
VS0-100 stems/ha1.45018.31319.712
101-200 stems/ha1.05813.81514.814
201-300 stems/ha5.82413.01518.913
301-400 stems/ha3.8307.62111.417
401-500 stems/ha5.52511.01716.514
501-600 stems/ha1.4505.5256.922
more than 600 stems/ha6.22320.21226.410
total25.01189.44114.43
ZG0-100 stems/ha..0.9680.968
101-200 stems/ha..0.41000.4100
201-300 stems/ha..1.3531.353
301-400 stems/ha..0.9680.968
401-500 stems/ha..1.7441.744
501-600 stems/ha......
more than 600 stems/ha..1.2561.256
total..6.376.37
ZH0-100 stems/ha..5.6245.624
101-200 stems/ha..9.2189.218
201-300 stems/ha..9.9179.917
301-400 stems/ha..10.91610.916
401-500 stems/ha..6.4226.422
501-600 stems/ha..4.9264.926
more than 600 stems/ha..4.9264.926
total..51.8251.82
Switzerland0-100 stems/ha7.721139.55147.35
101-200 stems/ha11.318155.95167.24
201-300 stems/ha18.913172.04190.94
301-400 stems/ha13.916167.34181.24
401-500 stems/ha14.915134.95149.75
501-600 stems/ha8.520102.66111.15
more than 600 stems/ha22.612229.44252.03
total97.861101.711199.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #162014/148393

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified) %± %± %± %± %± %±
inside perimeter0-100 stems/ha....5.43.77.92.012.95.47.91.6
101-200 stems/ha....13.55.69.52.123.16.811.51.9
201-300 stems/ha15.310.0..8.14.523.73.110.24.919.22.4
301-400 stems/ha15.410.0..18.96.412.72.417.96.114.42.1
401-500 stems/ha15.410.0..21.66.815.82.67.74.315.42.2
501-600 stems/ha15.410.0..10.85.17.41.910.24.98.61.7
more than 600 stems/ha38.513.5..21.66.823.13.117.96.122.92.5
total100.0...100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha7.91.211.41.210.21.316.31.216.31.812.60.6
101-200 stems/ha14.91.517.61.59.91.214.81.211.61.614.10.6
201-300 stems/ha14.41.519.11.516.31.515.31.211.61.615.70.7
301-400 stems/ha19.41.715.51.416.61.512.11.113.71.715.20.6
401-500 stems/ha12.91.412.21.311.91.312.41.111.61.612.30.6
501-600 stems/ha11.41.49.01.110.01.38.00.99.11.59.40.5
more than 600 stems/ha19.01.715.21.425.11.821.21.326.12.220.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha7.71.111.41.29.91.214.91.116.01.712.20.6
101-200 stems/ha14.61.517.61.510.11.213.91.012.71.613.90.6
201-300 stems/ha14.41.519.11.515.81.516.71.111.51.515.90.6
301-400 stems/ha19.31.715.51.416.71.512.21.014.01.715.10.6
401-500 stems/ha13.01.412.21.312.51.313.01.011.31.512.50.6
501-600 stems/ha11.51.49.01.110.11.27.90.89.21.49.30.5
more than 600 stems/ha19.51.715.21.424.91.721.51.225.32.121.10.7
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162015/148394

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha....0.7715.2261.8457.721
101-200 stems/ha....1.8456.2233.23311.218
201-300 stems/ha0.771..1.15815.5151.45018.813
301-400 stems/ha0.771..2.5388.3202.53814.116
401-500 stems/ha0.771..2.93510.4181.15815.015
501-600 stems/ha0.771..1.4504.8271.4508.420
more than 600 stems/ha1.845..2.93515.2152.53822.412
total4.727..13.31665.7713.81597.66
outside perimeter0-100 stems/ha15.71526.41121.21352.2822.812138.35
101-200 stems/ha29.61040.8920.51347.3816.314154.55
201-300 stems/ha28.51144.3833.91049.0816.314171.94
301-400 stems/ha38.3935.8934.6938.8919.113166.64
401-500 stems/ha25.51128.11124.91139.9916.314134.75
501-600 stems/ha22.61220.81320.91325.61112.816102.76
more than 600 stems/ha37.6935.1952.2767.9736.59229.44
total197.82231.31208.32320.82139.931098.11
total0-100 stems/ha15.71526.41122.01257.4724.511146.05
101-200 stems/ha29.61040.8922.31253.6819.513165.74
201-300 stems/ha29.21044.3835.0964.5717.713190.64
301-400 stems/ha39.1935.8937.1947.1821.612180.74
401-500 stems/ha26.31128.11127.71150.2817.414149.75
501-600 stems/ha23.41220.81322.31230.51014.215111.15
more than 600 stems/ha39.4935.1955.1783.1639.08251.83
total202.61231.31221.62386.51153.821195.81

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162016/148395

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha..10.23.97.03.95.62.77.73.712.95.47.91.6
101-200 stems/ha..13.64.511.64.94.12.313.54.823.16.811.51.9
201-300 stems/ha15.510.115.34.716.25.623.34.928.86.310.24.919.32.4
301-400 stems/ha15.410.013.64.516.55.715.14.29.64.117.96.114.32.1
401-500 stems/ha15.410.016.94.916.25.621.94.89.64.17.74.315.42.2
501-600 stems/ha15.410.010.23.94.63.25.52.711.54.410.24.98.61.7
more than 600 stems/ha38.413.520.35.227.86.824.65.019.25.517.96.122.92.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha9.80.911.11.413.21.820.52.514.21.816.31.812.60.6
101-200 stems/ha16.41.112.31.48.11.515.42.216.41.911.61.614.10.6
201-300 stems/ha17.01.115.41.616.62.014.62.215.91.911.61.615.70.7
301-400 stems/ha17.21.116.91.612.81.88.51.714.31.813.71.715.20.6
401-500 stems/ha12.51.010.41.313.71.812.32.013.41.811.61.612.20.6
501-600 stems/ha10.10.99.21.311.21.76.11.57.81.49.11.59.30.5
more than 600 stems/ha16.91.124.81.924.52.322.62.618.02.026.12.220.90.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha9.70.911.01.312.51.717.22.113.41.716.01.712.30.6
101-200 stems/ha16.21.112.41.48.51.412.91.816.01.812.71.613.90.6
201-300 stems/ha17.01.115.31.516.61.916.52.017.51.811.51.516.00.6
301-400 stems/ha17.21.116.61.513.21.79.91.613.71.714.01.715.10.6
401-500 stems/ha12.51.011.01.313.91.714.41.913.01.611.31.512.50.6
501-600 stems/ha10.10.99.31.210.51.66.01.38.31.39.21.49.30.5
more than 600 stems/ha17.11.124.31.824.92.223.12.318.21.925.32.121.00.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162017/148396

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstem count/ha (DBH >= 12cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha..2.2411.0581.4501.4501.8457.821
101-200 stems/ha..2.9351.7441.0582.5383.23311.318
201-300 stems/ha0.7713.2332.4385.8245.3251.45018.913
301-400 stems/ha0.7712.9352.4383.8301.8452.53814.116
401-500 stems/ha0.7713.6312.4385.5251.8451.15815.015
501-600 stems/ha0.7712.2410.7711.4502.1411.4508.520
more than 600 stems/ha1.8454.3294.1286.2233.5312.53822.412
total4.72821.31214.91525.01118.31313.81598.06
outside perimeter0-100 stems/ha42.2920.91316.01518.31318.61322.812138.85
101-200 stems/ha70.5723.1129.81813.81521.41216.314154.85
201-300 stems/ha73.0628.91120.21213.01520.71216.314172.14
301-400 stems/ha74.0631.71015.5147.62118.61319.113166.64
401-500 stems/ha53.7819.51316.61411.01717.51316.314134.65
501-600 stems/ha43.3917.31413.6155.52510.21812.816102.76
more than 600 stems/ha72.6646.5829.81020.21223.51136.59229.24
total429.31187.92121.6389.44130.63139.931098.71
total0-100 stems/ha42.2923.11217.11419.71220.01324.511146.65
101-200 stems/ha70.5726.01111.51714.81423.81119.513166.14
201-300 stems/ha73.7632.11022.61218.91326.01117.713190.94
301-400 stems/ha74.7634.6918.01311.41720.41221.612180.74
401-500 stems/ha54.4823.11219.01316.51419.31317.414149.65
501-600 stems/ha44.0919.51314.3156.92212.31614.215111.15
more than 600 stems/ha74.4650.8833.9926.41027.01139.08251.63
total434.01209.22136.52114.43148.92153.821196.71

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162018/148397

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstem count/ha (DBH >= 12cm, classified) %± %± %±
Western Jura0-100 stems/ha..8.11.37.91.3
101-200 stems/ha..14.81.714.41.7
201-300 stems/ha15.610.113.31.713.41.6
301-400 stems/ha15.310.018.11.918.01.8
401-500 stems/ha15.310.013.81.713.91.7
501-600 stems/ha15.310.012.91.612.91.6
more than 600 stems/ha38.313.519.01.919.61.9
total100.0.100.0.100.0.
Eastern Jura0-100 stems/ha..7.42.47.42.4
101-200 stems/ha..15.63.315.63.3
201-300 stems/ha..18.13.518.13.5
301-400 stems/ha..23.83.923.83.9
401-500 stems/ha..9.82.79.82.7
501-600 stems/ha..6.62.36.62.3
more than 600 stems/ha..18.83.518.83.5
total..100.0.100.0.
Western Plateau0-100 stems/ha..13.43.113.43.1
101-200 stems/ha..17.63.517.63.5
201-300 stems/ha..13.53.213.53.2
301-400 stems/ha..12.73.112.73.1
401-500 stems/ha..13.43.113.43.1
501-600 stems/ha..8.22.58.22.5
more than 600 stems/ha..21.13.821.13.8
total..100.0.100.0.
Central Plateau0-100 stems/ha..10.82.110.82.1
101-200 stems/ha..16.62.516.62.5
201-300 stems/ha..22.02.822.02.8
301-400 stems/ha..14.92.414.92.4
401-500 stems/ha..11.72.211.72.2
501-600 stems/ha..8.21.98.21.9
more than 600 stems/ha..15.92.515.92.5
total..100.0.100.0.
Eastern Plateau0-100 stems/ha..11.01.811.01.8
101-200 stems/ha..18.32.218.32.2
201-300 stems/ha..19.22.219.22.2
301-400 stems/ha..17.02.117.02.1
401-500 stems/ha..12.01.812.01.8
501-600 stems/ha..9.81.79.81.7
more than 600 stems/ha..12.61.912.61.9
total..100.0.100.0.
Western Pre-Alps0-100 stems/ha22.314.012.23.113.03.0
101-200 stems/ha21.813.715.03.415.53.3
201-300 stems/ha..11.43.010.62.8
301-400 stems/ha..15.03.413.93.1
401-500 stems/ha..8.82.78.22.5
501-600 stems/ha11.210.610.52.910.62.8
more than 600 stems/ha44.716.627.14.228.44.1
total100.0.100.0.100.0.
Central Pre-Alps0-100 stems/ha..9.21.88.61.7
101-200 stems/ha10.06.710.01.910.01.8
201-300 stems/ha15.08.016.92.316.72.2
301-400 stems/ha25.09.719.92.520.32.4
401-500 stems/ha20.09.010.71.911.41.9
501-600 stems/ha10.06.78.81.88.91.7
more than 600 stems/ha20.09.024.52.724.22.6
total100.0.100.0.100.0.
Eastern Pre-Alps0-100 stems/ha..10.32.19.92.1
101-200 stems/ha12.511.76.91.87.11.8
201-300 stems/ha..18.22.717.52.6
301-400 stems/ha25.015.313.32.413.72.4
401-500 stems/ha50.017.715.32.516.62.6
501-600 stems/ha12.511.711.32.211.42.2
more than 600 stems/ha..24.63.023.72.9
total100.0.100.0.100.0.
Northwestern Alps0-100 stems/ha13.36.213.72.913.72.6
101-200 stems/ha13.36.214.42.914.22.6
201-300 stems/ha20.07.315.83.016.52.8
301-400 stems/ha10.05.513.02.812.52.5
401-500 stems/ha20.07.311.02.612.52.5
501-600 stems/ha10.05.58.92.49.12.2
more than 600 stems/ha13.36.223.33.521.63.1
total100.0.100.0.100.0.
Central Alps0-100 stems/ha11.77.815.14.414.53.9
101-200 stems/ha11.77.88.93.59.43.2
201-300 stems/ha11.77.812.14.012.03.6
301-400 stems/ha12.28.110.33.710.73.4
401-500 stems/ha17.69.310.33.711.83.5
501-600 stems/ha5.95.79.03.58.43.0
more than 600 stems/ha29.311.134.25.833.25.2
total100.0.100.0.100.0.
Northeastern Alps0-100 stems/ha5.65.416.74.214.63.6
101-200 stems/ha11.17.410.33.510.43.1
201-300 stems/ha27.810.616.74.218.74.0
301-400 stems/ha16.78.814.14.014.63.6
401-500 stems/ha..12.83.810.43.1
501-600 stems/ha..12.83.810.43.1
more than 600 stems/ha38.911.516.74.220.84.2
total100.0.100.0.100.0.
Southwestern Alps0-100 stems/ha5.62.720.52.517.22.1
101-200 stems/ha4.12.315.42.212.91.8
201-300 stems/ha23.34.914.62.216.52.0
301-400 stems/ha15.14.28.51.79.91.6
401-500 stems/ha21.94.812.32.014.41.9
501-600 stems/ha5.52.76.11.56.01.3
more than 600 stems/ha24.65.022.62.623.12.3
total100.0.100.0.100.0.
Southeastern Alps0-100 stems/ha7.73.714.21.813.41.7
101-200 stems/ha13.54.816.41.916.01.8
201-300 stems/ha28.86.315.91.917.51.8
301-400 stems/ha9.64.114.31.813.71.7
401-500 stems/ha9.64.113.41.813.01.6
501-600 stems/ha11.54.47.81.48.31.3
more than 600 stems/ha19.25.518.02.018.21.9
total100.0.100.0.100.0.
Southern Alps0-100 stems/ha12.95.416.31.816.01.7
101-200 stems/ha23.16.811.61.612.71.6
201-300 stems/ha10.24.911.61.611.51.5
301-400 stems/ha17.96.113.71.714.01.7
401-500 stems/ha7.74.311.61.611.31.5
501-600 stems/ha10.24.99.11.59.21.4
more than 600 stems/ha17.96.126.12.225.32.1
total100.0.100.0.100.0.
Switzerland0-100 stems/ha7.91.612.60.612.20.6
101-200 stems/ha11.51.914.10.613.90.6
201-300 stems/ha19.32.415.60.715.90.6
301-400 stems/ha14.42.115.20.615.10.6
401-500 stems/ha15.32.112.30.612.50.6
501-600 stems/ha8.61.79.30.59.30.5
more than 600 stems/ha22.92.520.90.721.10.7
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162019/148398

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 12cm, classified) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstem count/ha (DBH >= 12cm, classified)1000 ha± %1000 ha± %1000 ha± %
Western Jura0-100 stems/ha..12.21712.217
101-200 stems/ha..22.21222.212
201-300 stems/ha0.77120.01320.712
301-400 stems/ha0.77127.11027.810
401-500 stems/ha0.77120.71221.412
501-600 stems/ha0.77119.31320.013
more than 600 stems/ha1.84528.61030.310
total4.627150.02154.72
Eastern Jura0-100 stems/ha..3.6323.632
101-200 stems/ha..7.5217.521
201-300 stems/ha..8.7198.719
301-400 stems/ha..11.51611.516
401-500 stems/ha..4.7284.728
501-600 stems/ha..3.2343.234
more than 600 stems/ha..9.0199.019
total..48.2248.22
Western Plateau0-100 stems/ha..6.5246.524
101-200 stems/ha..8.6208.620
201-300 stems/ha..6.6236.623
301-400 stems/ha..6.2246.224
401-500 stems/ha..6.5246.524
501-600 stems/ha..4.0314.031
more than 600 stems/ha..10.31810.318
total..48.7348.73
Central Plateau0-100 stems/ha..7.4197.419
101-200 stems/ha..11.51511.515
201-300 stems/ha..15.21315.213
301-400 stems/ha..10.31610.316
401-500 stems/ha..8.1198.119
501-600 stems/ha..5.6235.623
more than 600 stems/ha..11.01611.016
total..69.1269.12
Eastern Plateau0-100 stems/ha..12.51612.516
101-200 stems/ha..20.71220.712
201-300 stems/ha..21.81221.812
301-400 stems/ha..19.31219.312
401-500 stems/ha..13.61513.615
501-600 stems/ha..11.11711.117
more than 600 stems/ha..14.31514.315
total..113.32113.32
Western Pre-Alps0-100 stems/ha0.7705.2265.924
101-200 stems/ha0.7716.3237.021
201-300 stems/ha..4.8274.827
301-400 stems/ha..6.3236.323
401-500 stems/ha..3.7303.730
501-600 stems/ha0.41004.4284.827
more than 600 stems/ha1.54911.41612.915
total3.33342.1445.54
Central Pre-Alps0-100 stems/ha..8.6208.620
101-200 stems/ha0.7719.31910.018
201-300 stems/ha1.15815.81416.914
301-400 stems/ha1.84518.61320.412
401-500 stems/ha1.45010.01811.517
501-600 stems/ha0.7718.2209.019
more than 600 stems/ha1.45022.91124.411
total7.22293.63100.82
Eastern Pre-Alps0-100 stems/ha..7.5217.521
101-200 stems/ha0.41005.0265.425
201-300 stems/ha..13.21513.215
301-400 stems/ha0.7719.61810.417
401-500 stems/ha1.45011.11712.516
501-600 stems/ha0.41008.2208.619
more than 600 stems/ha..17.91317.913
total2.93572.5375.33
Northwestern Alps0-100 stems/ha1.4507.2228.619
101-200 stems/ha1.4507.5219.019
201-300 stems/ha2.1408.22010.417
301-400 stems/ha1.1576.8227.920
401-500 stems/ha2.1405.7247.920
501-600 stems/ha1.1574.6275.724
more than 600 stems/ha1.45012.11613.615
total10.71752.2562.94
Central Alps0-100 stems/ha0.7703.5314.228
101-200 stems/ha0.7702.1402.734
201-300 stems/ha0.7702.8353.531
301-400 stems/ha0.7712.4373.132
401-500 stems/ha1.0572.4373.430
501-600 stems/ha0.31002.1402.437
more than 600 stems/ha1.7448.0199.717
total5.92323.3929.17
Northeastern Alps0-100 stems/ha0.41004.7275.026
101-200 stems/ha0.7702.9353.631
201-300 stems/ha1.8444.7266.422
301-400 stems/ha1.1583.9295.025
401-500 stems/ha..3.6303.630
501-600 stems/ha..3.6303.630
more than 600 stems/ha2.5374.7277.221
total6.42227.9734.45
Southwestern Alps0-100 stems/ha1.45018.31319.712
101-200 stems/ha1.05813.81514.814
201-300 stems/ha5.82413.01518.913
301-400 stems/ha3.8307.62111.417
401-500 stems/ha5.52511.01716.514
501-600 stems/ha1.4505.5256.922
more than 600 stems/ha6.22320.21226.410
total25.01189.44114.43
Southeastern Alps0-100 stems/ha1.45018.61320.013
101-200 stems/ha2.53821.41223.811
201-300 stems/ha5.32520.71226.011
301-400 stems/ha1.84518.61320.412
401-500 stems/ha1.84517.51319.313
501-600 stems/ha2.14110.21812.316
more than 600 stems/ha3.53123.51127.011
total18.313130.63148.92
Southern Alps0-100 stems/ha1.84522.81224.511
101-200 stems/ha3.23316.31419.513
201-300 stems/ha1.45016.31417.713
301-400 stems/ha2.53819.11321.612
401-500 stems/ha1.15816.31417.414
501-600 stems/ha1.45012.81614.215
more than 600 stems/ha2.53836.5939.08
total13.815139.93153.82
Switzerland0-100 stems/ha7.821138.55146.35
101-200 stems/ha11.318155.05166.34
201-300 stems/ha18.913171.84190.74
301-400 stems/ha14.116167.44181.54
401-500 stems/ha15.115135.05150.05
501-600 stems/ha8.520102.86111.35
more than 600 stems/ha22.512230.44252.93
total98.261100.911199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162020/148399

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionmain type of harvest %± %± %±
Western Juraskidder37.317.165.62.365.12.3
forwarder..25.52.125.02.1
mobile tower yarder12.411.75.41.15.51.1
cable crane12.411.71.40.61.60.6
helicopter25.415.50.50.30.90.5
others12.411.71.60.61.80.6
total100.0.100.0.100.0.
Eastern Juraskidder100.0.37.94.438.44.4
forwarder..54.64.554.24.5
mobile tower yarder..5.02.04.92.0
cable crane......
helicopter......
others..2.51.42.51.4
total100.0.100.0.100.0.
Western Plateauskidder..50.54.650.54.6
forwarder..48.74.648.74.6
mobile tower yarder..0.80.80.80.8
cable crane......
helicopter......
others......
total..100.0.100.0.
Central Plateauskidder100.0.61.63.361.83.3
forwarder..34.83.234.63.2
mobile tower yarder..1.80.91.80.9
cable crane..1.80.91.80.9
helicopter......
others......
total100.0.100.0.100.0.
Eastern Plateauskidder..59.32.859.32.8
forwarder..34.12.734.12.7
mobile tower yarder..4.41.24.41.2
cable crane..0.30.30.30.3
helicopter..0.60.40.60.4
others..1.30.61.30.6
total..100.0.100.0.
Western Pre-Alpsskidder..40.14.539.84.4
forwarder..4.92.04.92.0
mobile tower yarder..30.34.230.14.2
cable crane..14.03.213.93.1
helicopter100.0.9.92.710.62.8
others..0.80.80.80.8
total100.0.100.0.100.0.
Central Pre-Alpsskidder50.025.045.53.045.53.0
forwarder..4.31.24.31.2
mobile tower yarder..20.92.420.62.4
cable crane25.021.718.12.318.22.3
helicopter25.021.711.21.911.41.9
others......
total100.0.100.0.100.0.
Eastern Pre-Alpsskidder66.727.350.03.550.23.4
forwarder..7.71.97.61.8
mobile tower yarder..14.42.414.22.4
cable crane33.327.310.62.110.92.1
helicopter..15.92.515.62.5
others..1.40.81.40.8
total100.0.100.0.100.0.
Northwestern Alpsskidder23.111.726.43.526.23.3
forwarder..1.20.91.10.8
mobile tower yarder38.513.529.43.630.13.5
cable crane15.410.022.13.321.63.1
helicopter23.111.720.93.221.03.1
others......
total100.0.100.0.100.0.
Central Alpsskidder8.38.018.24.616.84.1
forwarder..1.41.41.21.2
mobile tower yarder41.714.319.24.622.44.5
cable crane8.38.022.24.920.34.4
helicopter41.714.337.55.738.15.3
others..1.51.51.31.3
total100.0.100.0.100.0.
Northeastern Alpsskidder10.09.527.94.926.04.5
forwarder......
mobile tower yarder10.09.511.63.511.53.3
cable crane30.014.538.45.337.55.0
helicopter50.015.922.14.525.04.4
others......
total100.0.100.0.100.0.
Southwestern Alpsskidder29.19.324.92.525.22.4
forwarder4.24.13.91.13.91.1
mobile tower yarder12.56.721.02.320.42.2
cable crane4.24.18.41.68.11.5
helicopter50.110.241.12.841.82.7
others..0.60.50.60.4
total100.0.100.0.100.0.
Southeastern Alpsskidder18.111.622.62.122.52.0
forwarder..6.81.26.61.2
mobile tower yarder18.111.619.62.019.61.9
cable crane..26.42.225.72.1
helicopter63.814.524.62.125.62.1
others......
total100.0.100.0.100.0.
Southern Alpsskidder12.15.79.21.49.41.4
forwarder..2.50.82.30.7
mobile tower yarder3.03.011.71.611.01.5
cable crane12.25.714.71.814.51.7
helicopter69.68.058.02.558.92.4
others3.03.03.91.03.90.9
total100.0.100.0.100.0.
Switzerlandskidder22.33.839.20.838.60.8
forwarder0.80.815.70.615.20.6
mobile tower yarder14.83.213.40.613.50.6
cable crane11.72.911.60.511.60.5
helicopter48.84.518.90.620.00.6
others1.71.21.10.21.20.2
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #162021/148400

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · main type of harvest · 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 regionmain type of harvest1000 ha± %1000 ha± %1000 ha± %
Western Juraskidder1.15899.64100.74
forwarder..38.6938.69
mobile tower yarder0.41008.2208.620
cable crane0.41002.1412.538
helicopter0.7710.7711.450
others0.41002.5382.935
total2.935151.82154.72
Eastern Juraskidder0.410018.11218.512
forwarder..26.1826.18
mobile tower yarder..2.4402.440
cable crane......
helicopter......
others..1.2571.257
total0.410047.8248.22
Western Plateauskidder..24.61024.610
forwarder..23.71023.710
mobile tower yarder..0.41000.4100
cable crane......
helicopter......
others......
total..48.7348.73
Central Plateauskidder0.310042.4642.76
forwarder..23.9923.99
mobile tower yarder..1.2501.250
cable crane..1.2501.250
helicopter......
others......
total0.310068.8269.12
Eastern Plateauskidder..67.2567.25
forwarder..38.6838.68
mobile tower yarder..5.0265.026
cable crane..0.41000.4100
helicopter..0.7710.771
others..1.4501.450
total..113.32113.32
Western Pre-Alpsskidder..18.11218.112
forwarder..2.2402.240
mobile tower yarder..13.71413.714
cable crane..6.3236.323
helicopter0.41004.4284.826
others..0.41000.4100
total0.410045.1445.54
Central Pre-Alpsskidder0.77145.2745.97
forwarder..4.3284.328
mobile tower yarder..20.81220.812
cable crane0.410017.91318.313
helicopter0.410011.11711.517
others......
total1.45099.32100.82
Eastern Pre-Alpsskidder0.77137.1837.87
forwarder..5.7245.724
mobile tower yarder..10.71710.717
cable crane0.41007.9208.220
helicopter..11.81611.816
others..1.1581.158
total1.15774.3375.33
Northwestern Alpsskidder1.15715.41416.513
forwarder..0.7710.771
mobile tower yarder1.84417.11318.912
cable crane0.77112.91513.615
helicopter1.15712.21613.215
others......
total4.62758.3462.94
Central Alpsskidder0.31004.6274.926
forwarder..0.31000.3100
mobile tower yarder1.7444.8256.521
cable crane0.31005.6245.923
helicopter1.7449.41711.115
others..0.41000.4100
total4.12725.0829.17
Northeastern Alpsskidder0.41008.6189.018
forwarder......
mobile tower yarder0.41003.6313.929
cable crane1.15711.81512.914
helicopter1.8446.8218.619
others......
total3.63030.8634.45
Southwestern Alpsskidder2.43726.41028.810
forwarder0.31004.1284.527
mobile tower yarder1.05822.31123.411
cable crane0.31008.9199.319
helicopter4.12943.7747.87
others..0.7710.771
total8.220106.23114.43
Southeastern Alpsskidder0.77132.8933.59
forwarder..9.8189.818
mobile tower yarder0.77128.41029.110
cable crane..38.3838.38
helicopter2.53835.6938.19
others......
total3.930145.02148.92
Southern Alpsskidder1.45013.11614.515
forwarder..3.5313.531
mobile tower yarder0.410016.61416.914
cable crane1.45020.91222.312
helicopter8.12082.4590.55
others0.41005.6255.924
total11.717142.13153.82
Switzerlandskidder9.519453.22462.72
forwarder0.3100181.84182.24
mobile tower yarder6.323155.34161.64
cable crane5.027134.25139.25
helicopter20.813218.83239.63
others0.77113.21613.916
total42.691156.511199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #162022/148401

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedtime of last treatment (classes of 10 years) %± %± %± %± %± %± %±
inside perimeterless than 10 years ago44.416.6100.0.28.67.024.98.829.914.511.95.625.64.0
11-20 years ago22.413.9..16.75.812.56.710.09.58.84.913.23.1
21-30 years ago....19.06.1..10.29.75.94.09.12.6
31-40 years ago....9.54.54.24.110.09.55.94.06.62.3
41-50 years ago....2.42.412.76.910.09.55.94.05.82.1
over 50 years ago33.315.7..23.86.645.710.229.914.561.78.339.64.4
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterless than 10 years ago51.92.276.01.635.61.520.62.522.82.310.01.541.60.8
11-20 years ago24.31.914.31.322.91.314.02.118.02.17.11.318.00.7
21-30 years ago9.51.34.90.812.21.19.91.816.82.09.71.510.10.5
31-40 years ago6.21.01.90.57.80.97.01.610.61.78.41.46.50.4
41-50 years ago3.60.81.10.46.80.88.91.75.61.26.51.25.00.4
over 50 years ago4.50.91.80.514.61.139.73.026.22.458.32.418.80.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalless than 10 years ago51.82.176.11.635.31.520.92.423.02.310.21.441.00.8
11-20 years ago24.31.814.21.322.61.313.82.017.82.07.21.217.80.7
21-30 years ago9.41.34.90.812.51.09.11.716.62.09.41.410.10.5
31-40 years ago6.11.01.90.57.90.96.81.510.61.78.21.36.50.4
41-50 years ago3.50.81.10.46.70.89.21.75.71.26.51.25.00.4
over 50 years ago5.00.91.80.515.01.140.12.926.32.458.52.319.50.6
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #162023/148402

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · time of last treatment (classes of 10 years) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-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 ago1.4500.7714.3292.1411.1581.45011.018
11-20 years ago0.771..2.5381.0580.41001.1585.725
21-30 years ago....2.835..0.41000.7713.930
31-40 years ago....1.4500.31000.41000.7712.835
41-50 years ago....0.41001.0580.41000.7712.538
over 50 years ago1.158..3.5313.8301.1587.52116.914
total3.2330.77114.9158.2203.53112.11742.79
outside perimeterless than 10 years ago100.24195.92122.9519.21227.31014.615480.12
11-20 years ago46.8836.8978.9613.01521.61210.318207.54
21-30 years ago18.41312.71642.299.31920.01214.215116.85
31-40 years ago11.9175.02727.1116.52212.71612.31675.47
41-50 years ago6.9232.83523.6128.3206.7229.51957.78
over 50 years ago8.6204.62850.4837.0831.31085.05216.93
total192.82257.91345.1293.33119.53145.931154.51
totalless than 10 years ago101.64196.62127.2421.21228.31016.114491.02
11-20 years ago47.6836.8981.4614.01521.91211.417213.14
21-30 years ago18.41312.71645.099.31920.41214.915120.75
31-40 years ago11.9175.02728.5116.92213.01613.01678.37
41-50 years ago6.9232.83523.9129.3197.02210.21860.27
over 50 years ago9.7194.62853.9840.7832.3992.55233.83
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #162024/148403
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