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NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonbasal area (standing live trees) %± %± %±
AGto 19 m2/ha..26.44.026.44.0
20-39 m2/ha..43.84.543.84.5
40-59 m2/ha..26.44.026.44.0
from 60 m2/ha..3.31.63.31.6
total..100.0.100.0.
AIto 19 m2/ha..8.38.26.76.6
20-39 m2/ha33.328.033.314.033.312.5
40-59 m2/ha33.328.041.714.640.013.0
from 60 m2/ha33.328.016.711.120.010.6
total100.0.100.0.100.0.
ARto 19 m2/ha..16.77.716.07.5
20-39 m2/ha..25.09.024.08.7
40-59 m2/ha..37.510.036.09.7
from 60 m2/ha100.0.20.88.424.08.7
total100.0.100.0.100.0.
BEto 19 m2/ha17.05.920.31.920.11.8
20-39 m2/ha51.27.843.72.444.32.3
40-59 m2/ha26.96.928.22.228.02.1
from 60 m2/ha4.93.47.91.37.61.2
total100.0.100.0.100.0.
BL/BSto 19 m2/ha..27.86.627.86.6
20-39 m2/ha..47.07.347.07.3
40-59 m2/ha..19.25.819.25.8
from 60 m2/ha..6.03.46.03.4
total..100.0.100.0.
FRto 19 m2/ha66.727.315.93.517.23.6
20-39 m2/ha..41.24.840.04.7
40-59 m2/ha..32.74.631.84.5
from 60 m2/ha33.327.310.32.910.93.0
total100.0.100.0.100.0.
GEto 19 m2/ha......
20-39 m2/ha..83.814.283.814.2
40-59 m2/ha..16.214.416.214.4
from 60 m2/ha......
total..100.0.100.0.
GLto 19 m2/ha30.014.635.58.734.17.5
20-39 m2/ha30.014.629.08.229.37.2
40-59 m2/ha20.012.819.47.219.56.2
from 60 m2/ha20.012.816.16.717.15.9
total100.0.100.0.100.0.
GRto 19 m2/ha26.85.929.82.429.42.3
20-39 m2/ha48.36.746.12.746.42.5
40-59 m2/ha17.85.119.92.119.62.0
from 60 m2/ha7.13.44.31.14.71.0
total100.0.100.0.100.0.
JUto 19 m2/ha..17.74.217.34.1
20-39 m2/ha100.0.48.35.449.55.4
40-59 m2/ha..27.04.826.44.7
from 60 m2/ha..7.12.86.92.7
total100.0.100.0.100.0.
LUto 19 m2/ha..17.83.517.53.4
20-39 m2/ha..45.54.544.84.5
40-59 m2/ha50.035.522.73.823.13.8
from 60 m2/ha50.035.513.93.114.53.2
total100.0.100.0.100.0.
NEto 19 m2/ha33.327.422.14.622.54.6
20-39 m2/ha66.727.359.75.559.95.3
40-59 m2/ha..17.04.216.44.0
from 60 m2/ha..1.21.21.21.2
total100.0.100.0.100.0.
NWto 19 m2/ha..14.39.611.88.0
20-39 m2/ha100.0.50.013.658.812.1
40-59 m2/ha..28.612.323.510.5
from 60 m2/ha..7.17.05.95.8
total100.0.100.0.100.0.
OWto 19 m2/ha..36.87.233.26.6
20-39 m2/ha40.022.124.06.325.56.1
40-59 m2/ha40.022.130.56.831.46.5
from 60 m2/ha20.018.18.74.29.84.2
total100.0.100.0.100.0.
SGto 19 m2/ha20.012.725.23.924.83.7
20-39 m2/ha40.015.532.34.132.94.0
40-59 m2/ha20.012.726.03.925.63.7
from 60 m2/ha20.012.716.53.316.83.2
total100.0.100.0.100.0.
SHto 19 m2/ha..22.27.022.27.0
20-39 m2/ha..52.88.452.88.4
40-59 m2/ha..22.27.022.27.0
from 60 m2/ha..2.82.82.82.8
total..100.0.100.0.
SOto 19 m2/ha..18.14.218.14.2
20-39 m2/ha..59.05.459.05.4
40-59 m2/ha..20.54.420.54.4
from 60 m2/ha..2.41.72.41.7
total..100.0.100.0.
SZto 19 m2/ha16.715.315.44.515.54.3
20-39 m2/ha50.020.546.16.246.55.9
40-59 m2/ha16.715.335.46.033.85.6
from 60 m2/ha16.715.33.12.24.22.4
total100.0.100.0.100.0.
TGto 19 m2/ha..25.65.225.65.2
20-39 m2/ha..47.06.047.06.0
40-59 m2/ha..23.25.123.25.1
from 60 m2/ha..4.32.44.32.4
total..100.0.100.0.
TIto 19 m2/ha17.58.047.73.245.13.0
20-39 m2/ha60.810.238.43.140.33.0
40-59 m2/ha13.07.011.92.112.02.0
from 60 m2/ha8.75.92.00.92.61.0
total100.0.100.0.100.0.
URto 19 m2/ha11.110.533.28.128.67.0
20-39 m2/ha22.213.937.88.334.57.3
40-59 m2/ha33.315.820.36.923.06.4
from 60 m2/ha33.315.88.74.813.85.3
total100.0.100.0.100.0.
VDto 19 m2/ha20.012.732.63.132.03.0
20-39 m2/ha20.012.744.13.243.13.2
40-59 m2/ha40.015.517.42.518.32.5
from 60 m2/ha20.012.75.91.56.51.6
total100.0.100.0.100.0.
VSto 19 m2/ha24.05.142.63.537.82.9
20-39 m2/ha36.65.738.13.437.72.9
40-59 m2/ha31.05.517.32.720.92.5
from 60 m2/ha8.43.32.01.03.71.1
total100.0.100.0.100.0.
ZGto 19 m2/ha..30.813.230.813.2
20-39 m2/ha..61.513.961.513.9
40-59 m2/ha..7.77.77.77.7
from 60 m2/ha......
total..100.0.100.0.
ZHto 19 m2/ha..21.73.521.73.5
20-39 m2/ha..49.04.249.04.2
40-59 m2/ha..25.23.625.23.6
from 60 m2/ha..4.21.74.21.7
total..100.0.100.0.
Switzerlandto 19 m2/ha21.42.627.60.827.10.8
20-39 m2/ha43.53.143.70.943.70.9
40-59 m2/ha23.92.722.60.822.70.8
from 60 m2/ha11.22.06.10.56.60.4
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156624/143003

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
AGto 19 m2/ha..12.91512.915
20-39 m2/ha..21.31121.311
40-59 m2/ha..12.91512.915
from 60 m2/ha..1.6491.649
total..48.7248.72
AIto 19 m2/ha..0.31000.3100
20-39 m2/ha0.31001.3451.639
40-59 m2/ha0.31001.6391.934
from 60 m2/ha0.31000.6691.054
total1.0543.9174.811
ARto 19 m2/ha..1.3471.347
20-39 m2/ha..1.9361.936
40-59 m2/ha..2.9272.927
from 60 m2/ha0.31001.6411.936
total0.31007.768.05
BEto 19 m2/ha2.43830.11032.59
20-39 m2/ha7.22164.7671.96
40-59 m2/ha3.83041.7845.58
from 60 m2/ha0.77111.61712.316
total14.115148.22162.32
BL/BSto 19 m2/ha..5.3245.324
20-39 m2/ha..9.0179.017
40-59 m2/ha..3.7313.731
from 60 m2/ha..1.1581.158
total..19.1619.16
FRto 19 m2/ha0.7706.3237.121
20-39 m2/ha..16.51216.512
40-59 m2/ha..13.11413.114
from 60 m2/ha0.41004.1294.527
total1.15740.0441.13
GEto 19 m2/ha......
20-39 m2/ha..1.8361.836
40-59 m2/ha..0.41000.4100
from 60 m2/ha......
total..2.2342.234
GLto 19 m2/ha1.2574.2275.423
20-39 m2/ha1.2573.5314.626
40-59 m2/ha0.8702.3393.133
from 60 m2/ha0.8701.9432.736
total3.92911.91215.88
GRto 19 m2/ha5.22536.6941.88
20-39 m2/ha9.41956.6766.06
40-59 m2/ha3.53124.41127.910
from 60 m2/ha1.4505.2256.623
total19.613122.83142.33
JUto 19 m2/ha..5.8245.824
20-39 m2/ha0.87016.01216.811
40-59 m2/ha..8.9188.918
from 60 m2/ha..2.3402.340
total0.87033.1333.93
LUto 19 m2/ha..6.9206.920
20-39 m2/ha..17.61117.611
40-59 m2/ha0.31008.8179.117
from 60 m2/ha0.31005.4235.722
total0.67038.7339.33
NEto 19 m2/ha0.31005.8226.221
20-39 m2/ha0.67015.81016.410
40-59 m2/ha..4.5254.525
from 60 m2/ha..0.31000.3100
total1.05726.4527.44
NWto 19 m2/ha..0.8690.869
20-39 m2/ha1.2552.7323.824
40-59 m2/ha..1.5461.546
from 60 m2/ha..0.41000.4100
total1.2555.4176.513
OWto 19 m2/ha..6.3216.321
20-39 m2/ha0.7704.1274.924
40-59 m2/ha0.7705.2236.021
from 60 m2/ha0.41001.5491.943
total1.94317.2619.04
SGto 19 m2/ha0.77011.61612.316
20-39 m2/ha1.45014.81416.313
40-59 m2/ha0.77011.91612.715
from 60 m2/ha0.7707.6218.320
total3.63145.9549.54
SHto 19 m2/ha..2.8322.832
20-39 m2/ha..6.8166.816
40-59 m2/ha..2.8322.832
from 60 m2/ha..0.41000.4100
total..12.8312.83
SOto 19 m2/ha..5.7245.724
20-39 m2/ha..18.5918.59
40-59 m2/ha..6.4226.422
from 60 m2/ha..0.8700.870
total..31.4431.44
SZto 19 m2/ha0.41003.6304.028
20-39 m2/ha1.15710.91511.914
40-59 m2/ha0.41008.3188.718
from 60 m2/ha0.41000.7701.157
total2.24023.5625.75
TGto 19 m2/ha..5.4215.421
20-39 m2/ha..9.9139.913
40-59 m2/ha..4.9234.923
from 60 m2/ha..0.9570.957
total..21.0421.04
TIto 19 m2/ha1.45041.8843.38
20-39 m2/ha5.02633.6938.68
40-59 m2/ha1.15810.41811.517
from 60 m2/ha0.7711.8442.537
total8.32087.6495.94
URto 19 m2/ha0.31003.8294.128
20-39 m2/ha0.7704.3255.023
40-59 m2/ha1.0572.3363.330
from 60 m2/ha1.0571.0572.039
total3.03111.41414.311
VDto 19 m2/ha0.87129.11029.910
20-39 m2/ha0.87139.4840.28
40-59 m2/ha1.55015.61417.114
from 60 m2/ha0.8715.3266.124
total3.83189.4393.23
VSto 19 m2/ha5.82429.51035.49
20-39 m2/ha8.91926.41035.38
40-59 m2/ha7.52112.01619.612
from 60 m2/ha2.1411.4503.431
total24.41169.3593.73
ZGto 19 m2/ha..1.7441.744
20-39 m2/ha..3.4243.424
40-59 m2/ha..0.41000.4100
from 60 m2/ha......
total..5.695.69
ZHto 19 m2/ha..10.91610.916
20-39 m2/ha..24.7924.79
40-59 m2/ha..12.71512.715
from 60 m2/ha..2.1402.140
total..50.4250.42
Switzerlandto 19 m2/ha19.313268.73288.03
20-39 m2/ha39.39425.42464.72
40-59 m2/ha21.613219.74241.33
from 60 m2/ha10.21959.8769.97
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156625/143004

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %±
inside perimeterto 19 m2/ha7.77.4..14.35.924.63.317.26.421.32.5
20-39 m2/ha76.911.7..34.38.038.83.762.88.243.53.1
40-59 m2/ha15.410.0..31.47.825.73.311.45.424.02.7
from 60 m2/ha....20.06.810.92.48.64.711.22.0
total100.0...100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha22.01.822.71.719.91.733.91.746.02.927.50.8
20-39 m2/ha53.92.242.82.040.22.141.91.838.12.843.70.9
40-59 m2/ha20.81.828.41.827.41.919.21.512.91.922.60.8
from 60 m2/ha3.20.86.10.912.61.45.00.83.01.06.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha21.61.822.71.719.51.732.11.543.02.727.00.8
20-39 m2/ha54.52.242.82.039.82.141.31.640.72.743.70.9
40-59 m2/ha20.71.828.41.827.61.920.41.312.81.822.70.8
from 60 m2/ha3.20.86.10.913.01.46.20.83.61.06.60.5
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156626/143005

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterto 19 m2/ha0.4100..1.84514.9152.14119.213
20-39 m2/ha3.631..4.32923.5127.82139.39
40-59 m2/ha0.771..4.03015.5151.45021.713
from 60 m2/ha....2.5386.6231.15810.218
total4.727..12.61660.5712.41690.36
outside perimeterto 19 m2/ha42.0851.3738.2986.1649.27266.83
20-39 m2/ha103.0497.0577.16106.5540.78424.22
40-59 m2/ha39.8964.3652.6748.8813.815219.34
from 60 m2/ha6.22413.71624.11212.8163.23360.17
total190.92226.31192.12254.22106.94970.41
totalto 19 m2/ha42.3851.3740.09101.0551.37285.93
20-39 m2/ha106.6497.0581.55130.0448.57463.52
40-59 m2/ha40.5964.3656.6764.3715.215241.03
from 60 m2/ha6.22413.71626.71119.4134.32970.27
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156627/143006

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %± %±
inside perimeterto 19 m2/ha7.77.419.65.317.96.224.05.129.56.917.26.421.32.6
20-39 m2/ha76.911.739.36.533.37.636.65.743.27.562.88.243.53.1
40-59 m2/ha15.410.028.66.023.16.831.05.520.56.111.45.424.02.7
from 60 m2/ha..12.54.425.67.08.43.36.83.88.64.711.22.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha22.41.224.22.024.12.542.63.528.12.646.02.927.50.8
20-39 m2/ha47.81.541.32.336.42.838.13.447.92.938.12.843.70.9
40-59 m2/ha25.01.324.22.026.12.517.32.720.42.312.91.922.60.8
from 60 m2/ha4.80.610.41.413.42.02.01.03.71.13.01.06.20.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha22.21.223.71.923.42.337.82.928.32.443.02.727.00.8
20-39 m2/ha48.11.541.12.136.12.637.72.947.22.740.72.743.70.9
40-59 m2/ha24.91.324.61.925.72.420.92.520.42.212.81.822.70.8
from 60 m2/ha4.70.610.61.314.81.93.71.14.11.13.61.06.60.5
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, 04.11.2014 #156628/143007

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeterto 19 m2/ha0.41004.0302.4385.8244.6272.14119.313
20-39 m2/ha3.6327.9214.5278.9196.7227.82139.49
40-59 m2/ha0.7715.8253.1337.5213.2331.45021.713
from 60 m2/ha..2.5383.4312.1411.1581.15810.118
total4.72820.21313.41524.41115.51412.41690.56
outside perimeterto 19 m2/ha93.4641.1924.91129.51029.11049.27267.13
20-39 m2/ha199.6370.3637.6826.41049.6740.78424.12
40-59 m2/ha104.4541.1926.91012.01621.11213.815219.44
from 60 m2/ha20.01317.71413.8151.4503.9303.23360.07
total417.41170.22103.2369.35103.63106.94970.61
totalto 19 m2/ha93.7645.1827.31035.4933.6951.37286.43
20-39 m2/ha203.2378.3642.1835.3856.2648.57463.52
40-59 m2/ha105.2546.9830.01019.61224.21115.215241.13
from 60 m2/ha20.01320.21317.3133.4314.9264.32970.17
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156629/143008

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees) %± %± %±
Western Jurato 19 m2/ha7.77.421.12.020.62.0
20-39 m2/ha77.011.754.92.555.62.4
40-59 m2/ha15.310.020.82.020.62.0
from 60 m2/ha..3.20.93.10.9
total100.0.100.0.100.0.
Eastern Jurato 19 m2/ha..25.24.025.24.0
20-39 m2/ha..50.54.650.54.6
40-59 m2/ha..21.03.721.03.7
from 60 m2/ha..3.21.63.21.6
total..100.0.100.0.
Western Plateauto 19 m2/ha..22.53.922.53.9
20-39 m2/ha..38.34.638.34.6
40-59 m2/ha..30.54.330.54.3
from 60 m2/ha..8.72.68.72.6
total..100.0.100.0.
Central Plateauto 19 m2/ha..20.92.820.92.8
20-39 m2/ha..42.43.342.43.3
40-59 m2/ha..29.33.129.33.1
from 60 m2/ha..7.31.87.31.8
total..100.0.100.0.
Eastern Plateauto 19 m2/ha..24.02.424.02.4
20-39 m2/ha..44.82.844.82.8
40-59 m2/ha..27.02.527.02.5
from 60 m2/ha..4.21.14.21.1
total..100.0.100.0.
Western Pre-Alpsto 19 m2/ha25.115.419.43.919.83.8
20-39 m2/ha12.611.842.74.940.64.7
40-59 m2/ha37.117.124.34.225.24.1
from 60 m2/ha25.115.413.63.414.43.4
total100.0.100.0.100.0.
Central Pre-Alpsto 19 m2/ha10.57.120.82.620.12.5
20-39 m2/ha47.411.541.63.242.03.0
40-59 m2/ha31.610.727.32.927.62.8
from 60 m2/ha10.57.110.21.910.21.9
total100.0.100.0.100.0.
Eastern Pre-Alpsto 19 m2/ha12.511.718.92.918.62.8
20-39 m2/ha25.015.336.83.536.33.5
40-59 m2/ha25.015.329.23.429.03.3
from 60 m2/ha37.517.115.12.616.12.6
total100.0.100.0.100.0.
Northwestern Alpsto 19 m2/ha24.18.034.74.332.73.8
20-39 m2/ha41.49.239.54.439.84.0
40-59 m2/ha24.18.017.83.419.03.2
from 60 m2/ha10.35.78.12.58.52.3
total100.0.100.0.100.0.
Central Alpsto 19 m2/ha14.39.426.46.323.75.3
20-39 m2/ha35.712.939.86.938.96.1
40-59 m2/ha21.411.023.96.023.35.3
from 60 m2/ha28.612.110.04.214.04.3
total100.0.100.0.100.0.
Northeastern Alpsto 19 m2/ha23.510.336.56.133.85.3
20-39 m2/ha35.311.633.35.933.75.3
40-59 m2/ha23.510.319.15.020.04.5
from 60 m2/ha17.69.311.14.012.53.7
total100.0.100.0.100.0.
Southwestern Alpsto 19 m2/ha24.05.142.63.537.82.9
20-39 m2/ha36.65.738.13.437.72.9
40-59 m2/ha31.05.517.32.720.92.5
from 60 m2/ha8.43.32.01.03.71.1
total100.0.100.0.100.0.
Southeastern Alpsto 19 m2/ha29.56.928.12.628.32.4
20-39 m2/ha43.27.547.92.947.22.7
40-59 m2/ha20.56.120.42.320.42.2
from 60 m2/ha6.83.83.71.14.11.1
total100.0.100.0.100.0.
Southern Alpsto 19 m2/ha17.26.446.02.943.02.7
20-39 m2/ha62.88.238.12.840.72.7
40-59 m2/ha11.45.412.91.912.81.8
from 60 m2/ha8.64.73.01.03.61.0
total100.0.100.0.100.0.
Switzerlandto 19 m2/ha21.32.627.50.827.00.8
20-39 m2/ha43.53.143.70.943.70.9
40-59 m2/ha24.02.722.60.822.70.8
from 60 m2/ha11.32.06.20.56.60.5
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156630/143009

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
Western Jurato 19 m2/ha0.410030.41030.710
20-39 m2/ha3.63179.2582.85
40-59 m2/ha0.77130.01030.710
from 60 m2/ha..4.6274.627
total4.627144.22148.92
Eastern Jurato 19 m2/ha..11.91611.916
20-39 m2/ha..23.7923.79
40-59 m2/ha..9.9189.918
from 60 m2/ha..1.5501.550
total..47.0347.03
Western Plateauto 19 m2/ha..10.61810.618
20-39 m2/ha..18.11218.112
40-59 m2/ha..14.41514.415
from 60 m2/ha..4.1304.130
total..47.2447.24
Central Plateauto 19 m2/ha..14.41314.413
20-39 m2/ha..29.1829.18
40-59 m2/ha..20.11120.111
from 60 m2/ha..5.0245.024
total..68.7268.72
Eastern Plateauto 19 m2/ha..26.41026.410
20-39 m2/ha..49.3649.36
40-59 m2/ha..29.71029.710
from 60 m2/ha..4.6274.627
total..110.12110.12
Western Pre-Alpsto 19 m2/ha0.7707.4218.120
20-39 m2/ha0.410016.31216.712
40-59 m2/ha1.1589.31810.317
from 60 m2/ha0.7705.2255.923
total2.93538.1541.14
Central Pre-Alpsto 19 m2/ha0.77118.31319.013
20-39 m2/ha3.23336.6839.88
40-59 m2/ha2.24024.01126.210
from 60 m2/ha0.7719.0199.718
total6.82287.8394.72
Eastern Pre-Alpsto 19 m2/ha0.410012.51612.915
20-39 m2/ha0.77124.31025.010
40-59 m2/ha0.77119.31220.012
from 60 m2/ha1.15710.01811.117
total2.93566.1368.93
Northwestern Alpsto 19 m2/ha2.53715.41417.912
20-39 m2/ha4.32817.51321.811
40-59 m2/ha2.5377.92010.417
from 60 m2/ha1.1573.6314.727
total10.41744.3654.74
Central Alpsto 19 m2/ha0.7704.6275.225
20-39 m2/ha1.7446.9208.618
40-59 m2/ha1.0574.1275.224
from 60 m2/ha1.4491.7443.132
total4.82517.31122.18
Northeastern Alpsto 19 m2/ha1.4498.2199.717
20-39 m2/ha2.1407.5209.717
40-59 m2/ha1.4494.3285.723
from 60 m2/ha1.1572.5373.630
total6.12222.6928.76
Southwestern Alpsto 19 m2/ha5.82429.51035.49
20-39 m2/ha8.91926.41035.38
40-59 m2/ha7.52112.01619.612
from 60 m2/ha2.1411.4503.431
total24.41169.3593.73
Southeastern Alpsto 19 m2/ha4.62729.11033.69
20-39 m2/ha6.72249.6756.26
40-59 m2/ha3.23321.11224.211
from 60 m2/ha1.1583.9304.926
total15.514103.63119.03
Southern Alpsto 19 m2/ha2.14149.2751.37
20-39 m2/ha7.82140.7848.57
40-59 m2/ha1.45013.81515.215
from 60 m2/ha1.1583.2334.329
total12.416106.94119.33
Switzerlandto 19 m2/ha19.313267.83287.13
20-39 m2/ha39.49425.22464.62
40-59 m2/ha21.813219.84241.63
from 60 m2/ha10.21860.4770.67
total90.86973.211063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156631/143010

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetern/a....1.01.03.12.1....1.20.7
critical....17.33.710.43.721.66.88.34.614.02.2
less stable30.712.8..58.74.844.76.151.48.240.48.150.03.1
stable69.312.8..23.14.141.86.027.07.351.28.234.83.0
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.40.30.40.21.70.5..0.80.61.30.60.90.2
critical2.30.74.90.812.31.29.42.29.31.97.11.57.40.5
less stable36.52.143.01.849.51.842.83.746.83.240.82.843.70.9
stable60.72.251.71.936.51.747.83.743.13.250.82.948.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.40.30.40.21.60.40.80.60.70.51.20.60.90.2
critical2.30.74.90.812.91.19.71.910.91.97.31.48.00.5
less stable36.42.143.01.850.61.743.33.247.43.040.72.744.20.9
stable61.02.151.71.935.01.646.23.240.93.050.82.746.90.9
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, 04.11.2014 #156632/143011

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....0.41000.771....1.158
critical....6.4232.4372.8351.15812.717
less stable1.450..21.61210.3176.7225.32545.49
stable3.233..8.5209.6183.5316.82331.610
total4.727..36.9922.91113.11613.21690.86
outside perimetern/a0.7711.1584.828..0.7711.4508.720
critical4.32912.41734.1105.8247.7217.82172.17
less stable67.46109.34137.4426.41039.2844.58424.12
stable112.04131.24101.5529.5936.0855.57465.72
total184.52253.91277.7261.6583.64109.24970.61
totaln/a0.7711.1585.1270.7710.7711.4509.719
critical4.32912.41740.498.22010.6188.92084.86
less stable68.86109.34159.1436.6845.9749.97469.52
stable115.34131.24110.0539.1839.6862.26497.32
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156633/143012

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability %± %± %±
AGn/a......
critical..2.51.42.51.4
less stable..40.54.540.54.5
stable..57.04.557.04.5
total..100.0.100.0.
AIn/a......
critical......
less stable100.0.91.77.793.35.9
stable..8.38.26.76.6
total100.0.100.0.100.0.
ARn/a..4.24.24.04.0
critical..16.77.716.07.5
less stable100.0.50.010.352.010.1
stable..29.29.428.09.1
total100.0.100.0.100.0.
BEn/a..1.40.61.30.5
critical7.34.16.71.26.71.2
less stable60.97.641.52.443.22.3
stable31.87.350.42.448.82.3
total100.0.100.0.100.0.
BL/BSn/a......
critical..4.33.04.33.0
less stable..27.86.627.86.6
stable..68.06.968.06.9
total..100.0.100.0.
FRn/a......
critical..10.22.910.02.9
less stable100.0.47.74.849.14.8
stable..42.14.840.94.7
total100.0.100.0.100.0.
GEn/a......
critical......
less stable..21.019.921.019.9
stable..79.019.979.019.9
total..100.0.100.0.
GLn/a......
critical..19.47.214.65.6
less stable60.015.658.18.958.57.7
stable40.015.622.67.626.87.0
total100.0.100.0.100.0.
GRn/a..0.90.50.70.4
critical14.44.710.51.611.01.6
less stable51.76.744.02.645.12.5
stable33.96.344.62.743.22.5
total100.0.100.0.100.0.
JUn/a......
critical..2.41.72.31.6
less stable50.035.544.85.444.95.3
stable50.035.552.95.452.85.4
total100.0.100.0.100.0.
LUn/a..1.61.11.61.1
critical100.0.12.23.013.63.1
less stable..61.84.460.84.4
stable..24.53.924.13.8
total100.0.100.0.100.0.
NEn/a..1.51.51.41.4
critical..2.41.72.31.6
less stable..30.65.129.55.0
stable100.0.65.55.366.75.2
total100.0.100.0.100.0.
NWn/a......
critical66.727.721.411.229.411.3
less stable33.327.828.612.329.411.3
stable..50.013.641.212.2
total100.0.100.0.100.0.
OWn/a..2.01.91.81.8
critical..2.22.22.02.0
less stable80.018.065.37.066.86.5
stable20.018.130.56.829.56.4
total100.0.100.0.100.0.
SGn/a..2.31.32.21.2
critical20.012.76.32.27.32.2
less stable40.015.553.64.452.64.3
stable40.015.537.84.338.04.2
total100.0.100.0.100.0.
SHn/a......
critical......
less stable..33.37.933.37.9
stable..66.77.866.77.8
total..100.0.100.0.
SOn/a......
critical..2.41.72.41.7
less stable..42.25.542.25.5
stable..55.45.555.45.5
total..100.0.100.0.
SZn/a16.715.3..1.41.4
critical16.715.312.34.112.74.0
less stable50.020.540.06.140.85.8
stable16.715.347.76.245.15.9
total100.0.100.0.100.0.
TGn/a..1.41.41.41.4
critical..4.32.44.32.4
less stable..35.65.735.65.7
stable..58.75.958.75.9
total..100.0.100.0.
TIn/a..1.20.71.10.6
critical8.86.06.91.67.11.6
less stable34.79.943.33.242.63.0
stable56.410.348.53.249.23.1
total100.0.100.0.100.0.
URn/a......
critical66.715.830.37.937.87.4
less stable33.315.846.58.643.87.6
stable..23.27.218.45.9
total100.0.100.0.100.0.
VDn/a..0.40.40.40.4
critical30.014.56.01.56.91.6
less stable50.015.839.43.239.83.1
stable20.012.754.23.252.83.2
total100.0.100.0.100.0.
VSn/a2.92.01.00.71.50.7
critical9.93.59.92.19.91.8
less stable46.45.943.03.543.93.0
stable40.85.846.13.544.73.0
total100.0.100.0.100.0.
ZGn/a......
critical..7.77.77.77.7
less stable..38.513.938.513.9
stable..53.814.253.814.2
total..100.0.100.0.
ZHn/a......
critical..4.21.74.21.7
less stable..42.04.142.04.1
stable..53.84.253.84.2
total..100.0.100.0.
Switzerlandn/a1.20.70.90.20.90.2
critical13.92.17.40.57.90.5
less stable50.13.143.60.944.20.9
stable34.93.048.20.947.00.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156634/143013

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability1000 ha± %1000 ha± %1000 ha± %
AGn/a......
critical..1.2571.257
less stable..19.71119.711
stable..27.8827.88
total..48.7248.72
AIn/a......
critical......
less stable1.0543.5194.512
stable..0.31000.3100
total1.0543.9174.811
ARn/a..0.31000.3100
critical..1.3471.347
less stable0.31003.8224.220
stable..2.2332.233
total0.31007.768.05
BEn/a..2.1412.141
critical1.0589.91810.917
less stable8.62061.6670.16
stable4.52774.6579.15
total14.115148.22162.32
BL/BSn/a......
critical..0.8700.870
less stable..5.3245.324
stable..13.01213.012
total..19.1619.16
FRn/a......
critical..4.1294.129
less stable1.15719.11120.210
stable..16.81216.812
total1.15740.0441.13
GEn/a......
critical......
less stable..0.51000.5100
stable..1.7431.743
total..2.2342.234
GLn/a......
critical..2.3392.339
less stable2.3396.9199.215
stable1.5492.7364.227
total3.92911.91215.88
GRn/a..1.0581.058
critical2.83512.91615.714
less stable10.11854.0764.26
stable6.62354.8761.46
total19.613122.83142.33
JUn/a......
critical..0.8700.870
less stable0.410014.81215.212
stable0.410017.51117.911
total0.87033.1333.93
LUn/a..0.6700.670
critical0.6704.7245.323
less stable..23.9823.98
stable..9.5169.516
total0.67038.7339.33
NEn/a..0.41000.4100
critical..0.6700.670
less stable..8.1188.118
stable1.05717.3918.38
total1.05726.4527.44
NWn/a......
critical0.8691.2551.940
less stable0.41001.5461.940
stable..2.7322.732
total1.2555.4176.513
OWn/a..0.31000.3100
critical..0.41000.4100
less stable1.54911.21212.710
stable0.41005.2235.622
total1.94317.2619.04
SGn/a..1.1581.158
critical0.7702.9353.631
less stable1.45024.61026.09
stable1.45017.41218.812
total3.63145.9549.54
SHn/a......
critical......
less stable..4.3244.324
stable..8.5128.512
total..12.8312.83
SOn/a......
critical..0.8700.870
less stable..13.21313.213
stable..17.41017.410
total..31.4431.44
SZn/a0.4100..0.4100
critical0.41002.9343.332
less stable1.1579.41610.515
stable0.410011.21511.614
total2.24023.5625.75
TGn/a..0.31000.3100
critical..0.9570.957
less stable..7.5167.516
stable..12.31112.311
total..21.0421.04
TIn/a..1.1581.158
critical0.7716.0246.823
less stable2.93538.0840.88
stable4.72742.5847.27
total8.32087.6495.94
URn/a......
critical2.0393.4315.423
less stable1.0575.3226.320
stable..2.6342.634
total3.03111.41414.311
VDn/a..0.41000.4100
critical1.1585.3266.524
less stable1.94435.2937.18
stable0.87148.5749.27
total3.83189.4393.23
VSn/a0.7710.7711.450
critical2.4376.9229.319
less stable11.31729.8941.28
stable9.91831.9941.98
total24.41169.3593.73
ZGn/a......
critical..0.41000.4100
less stable..2.1372.137
stable..3.0283.028
total..5.695.69
ZHn/a......
critical..2.1402.140
less stable..21.11021.110
stable..27.1827.18
total..50.4250.42
Switzerlandn/a1.1588.3209.419
critical12.61771.8784.46
less stable45.39424.62469.92
stable31.510468.82500.32
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156635/143014

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %±
inside perimetern/a......1.71.0..1.20.7
critical....14.35.916.02.88.84.813.92.2
less stable30.812.8..65.78.050.83.837.18.250.03.1
stable69.212.8..20.06.831.43.554.28.434.93.0
total100.0...100.0.100.0.100.0.100.0.
outside perimetern/a0.40.30.60.31.10.51.10.41.30.70.90.2
critical1.70.65.40.910.11.311.51.27.31.57.40.5
less stable38.22.141.51.949.52.246.41.841.12.843.70.9
stable59.72.152.52.039.22.141.01.850.32.948.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.40.30.60.31.10.41.20.41.20.60.90.2
critical1.70.65.40.910.41.312.31.17.41.48.00.5
less stable38.12.141.51.950.52.147.31.740.72.744.20.9
stable59.92.152.52.038.02.039.21.650.72.746.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156636/143015

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a......1.158..1.158
critical....1.8459.7191.15812.617
less stable1.550..8.32130.7104.62745.19
stable3.333..2.53819.0136.72231.510
total4.727..12.61660.5712.41690.36
outside perimetern/a0.7711.4502.2412.8351.4508.520
critical3.33312.31619.51329.1117.82171.97
less stable73.0693.8595.25118.0543.98423.92
stable113.94118.8475.36104.2553.87466.02
total190.92226.31192.12254.22106.94970.41
totaln/a0.7711.4502.2413.9301.4509.619
critical3.33312.31621.31238.898.82084.56
less stable74.5693.85103.44148.8448.57469.02
stable117.24118.8477.96123.2460.56497.52
total195.71226.31204.72314.62119.331060.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156637/143016

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetern/a....2.62.52.92.0....1.20.7
critical..17.95.123.16.89.93.515.95.58.84.814.02.2
less stable30.712.862.56.551.38.046.45.954.57.537.18.250.03.1
stable69.312.819.65.323.16.840.85.829.56.954.28.434.83.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.50.21.30.51.40.71.00.70.70.51.30.70.90.2
critical3.80.610.61.412.11.99.92.110.81.87.31.57.40.5
less stable40.01.447.52.352.82.943.03.546.42.941.12.843.70.9
stable55.71.540.72.333.82.746.13.542.12.950.32.948.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.21.10.51.50.71.50.70.60.41.20.60.90.2
critical3.70.611.41.413.31.99.91.811.51.77.41.48.00.5
less stable39.91.449.12.252.62.743.93.047.52.740.72.744.20.9
stable55.91.438.42.132.62.644.73.040.42.750.72.746.90.9
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, 04.11.2014 #156638/143017

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....0.31000.771....1.158
critical..3.6313.1332.4372.5381.15812.717
less stable1.45012.6166.92211.3178.4204.62745.39
stable3.2334.0303.1339.9184.6276.72231.510
total4.72820.21313.41524.41115.51412.41690.56
outside perimetern/a2.2412.2411.4500.7710.7711.4508.520
critical15.71518.01412.5166.92211.2177.82172.17
less stable167.0480.8554.5629.8948.1743.98424.12
stable232.5369.2634.9931.9943.6853.87465.92
total417.41170.22103.2369.35103.63106.94970.61
totaln/a2.2412.2411.8451.4500.7711.4509.619
critical15.71521.61215.6149.31913.7158.82084.76
less stable168.5493.4561.4641.2856.5648.57469.42
stable235.7373.2638.0841.9848.1760.56497.42
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156639/143018

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability %± %± %±
Western Juran/a..0.50.40.50.3
critical..1.70.61.70.6
less stable30.712.837.92.437.62.4
stable69.312.859.92.460.22.4
total100.0.100.0.100.0.
Eastern Juran/a......
critical..1.71.21.71.2
less stable..39.54.539.54.5
stable..58.84.558.84.5
total..100.0.100.0.
Western Plateaun/a......
critical..3.51.73.51.7
less stable..44.44.744.44.7
stable..52.14.752.14.7
total..100.0.100.0.
Central Plateaun/a..1.40.81.40.8
critical..8.11.88.11.8
less stable..44.33.344.33.3
stable..46.23.446.23.4
total..100.0.100.0.
Eastern Plateaun/a..0.30.30.30.3
critical..4.21.14.21.1
less stable..38.32.838.32.8
stable..57.12.857.12.8
total..100.0.100.0.
Western Pre-Alpsn/a..1.01.00.90.9
critical..13.63.412.63.2
less stable100.0.45.64.949.54.8
stable..39.84.837.04.6
total100.0.100.0.100.0.
Central Pre-Alpsn/a..0.80.60.80.5
critical21.19.49.01.89.81.8
less stable52.611.549.83.250.03.1
stable26.310.140.43.139.43.0
total100.0.100.0.100.0.
Eastern Pre-Alpsn/a..1.60.91.60.9
critical12.511.79.72.29.82.1
less stable62.517.151.43.751.83.6
stable25.015.337.33.636.83.5
total100.0.100.0.100.0.
Northwestern Alpsn/a..2.41.42.01.1
critical20.77.511.32.813.12.7
less stable58.69.144.34.547.04.0
stable20.77.542.04.437.93.9
total100.0.100.0.100.0.
Central Alpsn/a7.16.9..1.61.6
critical50.013.422.45.928.45.7
less stable35.712.949.87.146.76.2
stable7.16.927.96.423.35.3
total100.0.100.0.100.0.
Northeastern Alpsn/a..1.61.61.31.3
critical5.95.711.14.010.03.4
less stable58.812.058.76.258.75.5
stable35.311.628.65.730.05.1
total100.0.100.0.100.0.
Southwestern Alpsn/a2.92.01.00.71.50.7
critical9.93.59.92.19.91.8
less stable46.45.943.03.543.93.0
stable40.85.846.13.544.73.0
total100.0.100.0.100.0.
Southeastern Alpsn/a..0.70.50.60.4
critical15.95.510.81.811.51.7
less stable54.57.546.42.947.52.7
stable29.56.942.12.940.42.7
total100.0.100.0.100.0.
Southern Alpsn/a..1.30.71.20.6
critical8.84.87.31.57.41.4
less stable37.18.241.12.840.72.7
stable54.28.450.32.950.72.7
total100.0.100.0.100.0.
Switzerlandn/a1.20.70.90.20.90.2
critical13.92.17.40.57.90.5
less stable50.13.143.70.944.20.9
stable34.83.048.10.946.90.9
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156640/143019

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability1000 ha± %1000 ha± %1000 ha± %
Western Juran/a..0.7710.771
critical..2.5382.538
less stable1.45054.6756.07
stable3.23386.4589.64
total4.627144.22148.92
Eastern Juran/a......
critical..0.8700.870
less stable..18.61218.612
stable..27.6827.68
total..47.0347.03
Western Plateaun/a......
critical..1.6491.649
less stable..21.01121.011
stable..24.51024.510
total..47.2447.24
Central Plateaun/a..0.9570.957
critical..5.6235.623
less stable..30.4830.48
stable..31.7831.78
total..68.7268.72
Eastern Plateaun/a..0.41000.4100
critical..4.6274.627
less stable..42.2742.27
stable..62.9562.95
total..110.12110.12
Western Pre-Alpsn/a..0.41000.4100
critical..5.2265.226
less stable2.93517.41220.411
stable..15.21315.213
total2.93538.1541.14
Central Pre-Alpsn/a..0.7710.771
critical1.4507.9219.319
less stable3.63143.7747.37
stable1.84435.5837.38
total6.82287.8394.72
Eastern Pre-Alpsn/a..1.1581.158
critical0.41006.4236.822
less stable1.84433.9835.77
stable0.77124.61025.410
total2.93566.1368.93
Northwestern Alpsn/a..1.1581.158
critical2.1405.0267.121
less stable6.12319.61225.79
stable2.14018.61220.711
total10.41744.3654.74
Central Alpsn/a0.3100..0.3100
critical2.4373.9296.322
less stable1.7448.61810.315
stable0.31004.8255.224
total4.82517.31122.18
Northeastern Alpsn/a..0.41000.4100
critical0.41002.5372.934
less stable3.63013.21416.811
stable2.1406.4228.618
total6.12222.6928.76
Southwestern Alpsn/a0.7710.7711.450
critical2.4376.9229.319
less stable11.31729.8941.28
stable9.91831.9941.98
total24.41169.3593.73
Southeastern Alpsn/a..0.7710.771
critical2.53811.21713.715
less stable8.42048.1756.56
stable4.62743.6848.17
total15.514103.63119.03
Southern Alpsn/a..1.4501.450
critical1.1587.8218.820
less stable4.62743.9848.57
stable6.72253.8760.56
total12.416106.94119.33
Switzerlandn/a1.1588.4209.519
critical12.61671.9784.56
less stable45.59425.22470.72
stable31.610467.72499.32
total90.86973.211063.91

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156641/143020

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%......3.02.12.72.7..1.10.7
21-40%7.77.4..7.72.612.04.013.55.610.95.110.11.9
41-60%7.87.5..19.23.926.85.429.77.540.48.125.22.7
61-80%23.011.7..36.64.740.36.043.28.232.57.737.23.0
over 80%61.513.5..36.54.717.94.710.85.116.26.126.42.7
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.20.50.60.32.70.65.11.62.51.00.70.51.80.3
21-40%3.70.80.80.36.30.910.62.317.32.54.61.25.40.4
41-60%8.21.23.80.719.31.424.43.232.13.018.22.214.40.7
61-80%29.52.021.51.532.11.735.03.630.03.027.02.528.20.9
over 80%57.42.273.41.739.61.725.03.218.22.549.52.950.20.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.10.50.60.32.40.54.51.32.61.00.60.41.70.2
21-40%3.80.80.80.36.40.811.02.016.82.35.21.25.80.4
41-60%8.21.23.80.719.31.325.12.831.82.820.62.215.40.6
61-80%29.32.021.51.532.61.636.43.131.82.827.62.429.00.8
over 80%57.52.273.41.739.31.623.02.717.22.345.92.748.10.9
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, 04.11.2014 #156642/143021

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%......0.7710.4100..1.058
21-40%0.4100..2.8352.8351.8441.4509.220
41-60%0.4100..7.1226.2233.9305.32522.812
61-80%1.158..13.5169.2185.7244.32933.710
over 80%2.935..13.5164.1281.4502.14124.012
total4.727..36.9922.91113.11613.21690.86
outside perimeter0-20%2.2411.4507.5223.1332.1410.77117.114
21-40%6.9232.14117.4146.52214.4155.02652.38
41-60%15.1159.51953.7815.01426.81019.913140.25
61-80%54.4754.5789.0621.61125.11129.510274.13
over 80%105.94186.33110.0515.41415.21454.17487.02
total184.52253.91277.7261.6583.64109.24970.61
total0-20%2.2411.4507.5223.8302.5370.77118.114
21-40%7.2222.14120.2139.31916.2146.42361.57
41-60%15.5159.51960.8721.21230.7925.211163.04
61-80%55.5754.57102.5530.8930.7933.89307.83
over 80%108.84186.33123.5419.51216.61456.27511.02
total189.11253.91314.6284.6496.73122.431061.31

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156643/143022

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes) %± %± %±
AG0-20%......
21-40%......
41-60%..2.51.42.51.4
61-80%..24.83.924.83.9
over 80%..72.74.172.74.1
total..100.0.100.0.
AI0-20%......
21-40%33.328.0..6.76.6
41-60%33.328.016.711.120.010.6
61-80%..25.012.820.010.6
over 80%33.328.058.314.553.313.2
total100.0.100.0.100.0.
AR0-20%......
21-40%..4.24.24.04.0
41-60%..8.35.78.05.5
61-80%..25.09.024.08.7
over 80%100.0.62.59.964.09.6
total100.0.100.0.100.0.
BE0-20%..1.90.71.70.6
21-40%2.42.43.70.93.60.9
41-60%17.25.912.01.612.51.5
61-80%48.87.831.42.232.92.2
over 80%31.67.351.02.449.32.3
total100.0.100.0.100.0.
BL/BS0-20%......
21-40%......
41-60%..2.12.12.12.1
61-80%..25.66.425.66.4
over 80%..72.26.672.26.6
total..100.0.100.0.
FR0-20%......
21-40%..0.90.90.90.9
41-60%..13.03.312.73.2
61-80%33.327.326.14.326.34.2
over 80%66.727.359.94.860.14.7
total100.0.100.0.100.0.
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..100.0.100.0.
total..100.0.100.0.
GL0-20%..3.23.22.42.4
21-40%..3.23.22.42.4
41-60%40.015.612.96.119.56.2
61-80%40.015.616.16.722.06.5
over 80%20.012.864.58.753.77.9
total100.0.100.0.100.0.
GR0-20%1.81.82.60.82.50.8
21-40%10.74.113.61.813.21.7
41-60%32.16.232.12.532.12.3
61-80%41.16.630.72.532.12.3
over 80%14.34.721.02.220.12.0
total100.0.100.0.100.0.
JU0-20%..1.21.21.21.2
21-40%..2.41.72.31.6
41-60%..5.82.55.62.5
61-80%..22.44.521.94.5
over 80%100.0.68.35.169.05.0
total100.0.100.0.100.0.
LU0-20%......
21-40%..4.11.84.01.8
41-60%..4.11.84.01.8
61-80%..29.34.128.94.1
over 80%100.0.62.64.463.24.3
total100.0.100.0.100.0.
NE0-20%..4.22.44.12.3
21-40%33.327.41.21.22.31.6
41-60%..13.33.812.93.6
61-80%33.327.438.85.438.65.3
over 80%33.327.442.45.542.15.3
total100.0.100.0.100.0.
NW0-20%......
21-40%..7.17.05.95.8
41-60%......
61-80%33.327.842.913.541.212.2
over 80%66.727.750.013.652.912.3
total100.0.100.0.100.0.
OW0-20%..6.33.65.73.2
21-40%..4.43.03.92.7
41-60%20.018.121.86.121.65.8
61-80%40.022.130.56.831.46.5
over 80%40.022.137.07.237.36.8
total100.0.100.0.100.0.
SG0-20%..0.80.80.70.7
21-40%10.09.52.41.32.91.4
41-60%10.09.515.73.215.33.1
61-80%20.012.729.94.129.23.9
over 80%60.015.551.24.451.94.3
total100.0.100.0.100.0.
SH0-20%......
21-40%..2.82.82.82.8
41-60%......
61-80%..25.07.325.07.3
over 80%..72.27.472.27.4
total..100.0.100.0.
SO0-20%......
21-40%......
41-60%..2.41.72.41.7
61-80%..16.94.116.94.1
over 80%..80.74.480.74.4
total..100.0.100.0.
SZ0-20%..3.12.22.82.0
21-40%16.715.34.62.65.62.8
41-60%16.715.316.94.716.94.5
61-80%33.319.327.75.628.25.4
over 80%33.319.347.76.246.55.9
total100.0.100.0.100.0.
TG0-20%..1.41.41.41.4
21-40%..2.82.02.82.0
41-60%..4.32.44.32.4
61-80%..32.75.632.75.6
over 80%..58.75.958.75.9
total..100.0.100.0.
TI0-20%..0.40.40.40.4
21-40%13.27.14.51.35.21.4
41-60%39.110.214.22.216.42.3
61-80%26.09.226.12.826.12.7
over 80%21.78.654.73.251.93.1
total100.0.100.0.100.0.
UR0-20%..6.24.34.93.4
21-40%11.110.58.74.89.24.4
41-60%33.315.820.77.023.46.5
61-80%33.315.835.38.334.97.3
over 80%22.213.929.17.827.66.8
total100.0.100.0.100.0.
VD0-20%..1.70.81.60.8
21-40%10.09.510.52.010.52.0
41-60%20.012.715.22.315.42.3
61-80%30.014.526.72.926.82.8
over 80%40.015.545.93.245.63.2
total100.0.100.0.100.0.
VS0-20%2.82.05.51.64.81.3
21-40%14.24.210.42.211.41.9
41-60%25.35.223.73.024.12.6
61-80%39.45.833.73.335.12.9
over 80%18.34.626.73.124.52.6
total100.0.100.0.100.0.
ZG0-20%......
21-40%......
41-60%......
61-80%..7.77.77.77.7
over 80%..92.37.292.37.2
total..100.0.100.0.
ZH0-20%..0.70.70.70.7
21-40%..0.70.70.70.7
41-60%..8.42.38.42.3
61-80%..19.63.319.63.3
over 80%..70.63.870.63.8
total..100.0.100.0.
Switzerland0-20%1.10.71.70.31.70.2
21-40%10.01.95.40.45.70.4
41-60%25.22.714.30.715.30.6
61-80%37.13.028.00.928.80.8
over 80%26.52.850.50.948.50.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156644/143023

NFI2

forest area: avalanches SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %
AG0-20%......
21-40%......
41-60%..1.2571.257
61-80%..12.11612.116
over 80%..35.4635.46
total..48.7248.72
AI0-20%......
21-40%0.3100..0.3100
41-60%0.31000.6691.054
61-80%..1.0541.054
over 80%0.31002.3302.627
total1.0543.9174.811
AR0-20%......
21-40%..0.31000.3100
41-60%..0.6690.669
61-80%..1.9361.936
over 80%0.31004.8175.116
total0.31007.768.05
BE0-20%..2.8352.835
21-40%0.31005.5255.824
41-60%2.43817.81320.212
61-80%6.92246.6853.57
over 80%4.42775.6580.05
total14.115148.22162.32
BL/BS0-20%......
21-40%......
41-60%..0.41000.4100
61-80%..4.9264.926
over 80%..13.81113.811
total..19.1619.16
FR0-20%......
21-40%..0.41000.4100
41-60%..5.2255.225
61-80%0.410010.51710.816
over 80%0.77023.9924.78
total1.15740.0441.13
GE0-20%......
21-40%......
41-60%......
61-80%......
over 80%..2.2342.234
total..2.2342.234
GL0-20%..0.41000.4100
21-40%..0.41000.4100
41-60%1.5491.5493.133
61-80%1.5491.9433.531
over 80%0.8707.7188.517
total3.92911.91215.88
GR0-20%0.31003.2333.531
21-40%2.14116.71418.813
41-60%6.32339.4845.78
61-80%8.02037.7945.78
over 80%2.83525.81128.610
total19.613122.83142.33
JU0-20%..0.41000.4100
21-40%..0.8700.870
41-60%..1.9441.944
61-80%..7.4217.421
over 80%0.87022.6823.48
total0.87033.1333.93
LU0-20%......
21-40%..1.6441.644
41-60%..1.6441.644
61-80%..11.41511.415
over 80%0.67024.2824.88
total0.67038.7339.33
NE0-20%..1.1581.158
21-40%0.31000.31000.670
41-60%..3.5283.528
61-80%0.310010.21410.614
over 80%0.310011.21311.513
total1.05726.4527.44
NW0-20%......
21-40%..0.41000.4100
41-60%......
61-80%0.41002.3362.732
over 80%0.8692.7323.526
total1.2555.4176.513
OW0-20%..1.1571.157
21-40%..0.7700.770
41-60%0.41003.7294.127
61-80%0.7705.2236.021
over 80%0.7706.4207.119
total1.94317.2619.04
SG0-20%..0.41000.4100
21-40%0.41001.1581.450
41-60%0.41007.2217.621
61-80%0.77013.71514.514
over 80%2.24023.51025.79
total3.63145.9549.54
SH0-20%......
21-40%..0.41000.4100
41-60%......
61-80%..3.2293.229
over 80%..9.3119.311
total..12.8312.83
SO0-20%......
21-40%......
41-60%..0.8710.871
61-80%..5.3255.325
over 80%..25.4625.46
total..31.4431.44
SZ0-20%..0.7700.770
21-40%0.41001.1571.449
41-60%0.41004.0294.327
61-80%0.7706.5217.220
over 80%0.77011.21411.914
total2.24023.5625.75
TG0-20%..0.31000.3100
21-40%..0.6700.670
41-60%..0.9570.957
61-80%..6.9176.917
over 80%..12.31112.311
total..21.0421.04
TI0-20%..0.41000.4100
21-40%1.1583.9305.026
41-60%3.23312.51615.714
61-80%2.14122.91125.011
over 80%1.84448.0749.87
total8.32087.6495.94
UR0-20%..0.7710.771
21-40%0.31001.0571.349
41-60%1.0572.4373.330
61-80%1.0574.0275.024
over 80%0.7703.3304.027
total3.03111.41414.311
VD0-20%..1.5501.550
21-40%0.41009.4199.819
41-60%0.87113.61614.415
61-80%1.15823.81125.011
over 80%1.55041.0842.57
total3.83189.4393.23
VS0-20%0.7713.8304.527
21-40%3.4317.22110.717
41-60%6.22316.51422.611
61-80%9.61823.31132.99
over 80%4.52718.51323.011
total24.41169.3593.73
ZG0-20%......
21-40%......
41-60%......
61-80%..0.41000.4100
over 80%..5.1125.112
total..5.695.69
ZH0-20%..0.41000.4100
21-40%..0.41000.4100
41-60%..4.2284.228
61-80%..9.9179.917
over 80%..35.6635.66
total..50.4250.42
Switzerland0-20%1.05817.01418.114
21-40%9.02052.1861.17
41-60%22.812139.65162.44
61-80%33.610273.03306.63
over 80%24.012491.82515.82
total90.46973.611064.01

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #156645/143024

NFI2

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetern/a....2.22.2......0.30.3
critical3.02.19.54.514.95.29.53.419.06.16.43.19.51.6
less stable44.86.150.07.751.07.347.35.835.77.450.86.346.82.7
stable52.26.140.57.631.96.843.25.845.27.742.86.243.32.7
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.50.21.20.51.40.72.01.00.70.51.50.71.00.2
critical3.80.611.51.413.12.010.02.110.41.87.61.67.80.5
less stable39.61.549.02.352.82.942.73.549.22.938.42.943.91.0
stable56.11.538.32.232.72.845.23.539.82.852.53.047.31.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.21.10.51.50.71.50.70.60.41.20.60.90.2
critical3.70.611.41.413.31.99.91.811.51.77.41.48.00.5
less stable39.91.449.12.252.62.743.93.047.52.740.72.744.20.9
stable55.91.438.42.132.62.644.73.040.42.750.72.746.90.9
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, 04.11.2014 #156646/143025

NFI2

forest area: landslide/mudflow SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....0.4100......0.4100
critical0.7711.4502.4382.4372.8351.45011.218
less stable10.7187.6218.32012.0165.32511.31755.28
stable12.5176.1245.22511.0176.7229.61951.08
total24.01215.11516.21425.41014.81522.312117.85
outside perimetern/a2.2412.2411.4501.4500.7711.4509.220
critical15.01520.21313.2166.92210.9177.42173.57
less stable157.7485.8553.1729.21051.3737.29414.22
stable223.2367.1632.8930.9941.5850.97446.42
total398.11175.32100.4368.35104.3397.04943.41
totaln/a2.2412.2411.8451.4500.7711.4509.619
critical15.71521.61215.6149.31913.7158.82084.76
less stable168.5493.4561.4641.2856.5648.57469.42
stable235.7373.2638.0841.9848.1760.56497.42
total422.11190.42116.7393.73119.03119.331061.21

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 04.11.2014 #156647/143026
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