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NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · basal area (standing live trees) · 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 regionbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
Western Jurato 19 m2/ha0.410035.4935.89
20-39 m2/ha2.14174.7576.85
40-59 m2/ha0.410035.3935.79
from 60 m2/ha..6.4236.423
total2.935151.82154.72
Eastern Jurato 19 m2/ha0.410011.11711.516
20-39 m2/ha..26.9826.98
40-59 m2/ha..8.7198.719
from 60 m2/ha..1.1581.158
total0.410047.8248.22
Western Plateauto 19 m2/ha..13.91513.915
20-39 m2/ha..18.41218.412
40-59 m2/ha..11.91711.917
from 60 m2/ha..4.5294.529
total..48.7348.73
Central Plateauto 19 m2/ha0.310021.51021.810
20-39 m2/ha..28.5828.58
40-59 m2/ha..13.71413.714
from 60 m2/ha..5.0245.024
total0.310068.8269.12
Eastern Plateauto 19 m2/ha..37.2837.28
20-39 m2/ha..45.8745.87
40-59 m2/ha..25.71025.710
from 60 m2/ha..4.7274.727
total..113.32113.32
Western Pre-Alpsto 19 m2/ha..12.91512.915
20-39 m2/ha0.410012.61512.915
40-59 m2/ha..13.31413.314
from 60 m2/ha..6.3236.323
total0.410045.1445.54
Central Pre-Alpsto 19 m2/ha0.410025.51125.811
20-39 m2/ha0.77135.9836.68
40-59 m2/ha0.410027.31027.610
from 60 m2/ha..10.81710.817
total1.45099.32100.82
Eastern Pre-Alpsto 19 m2/ha..12.91512.915
20-39 m2/ha0.410022.91123.211
40-59 m2/ha0.77124.31025.010
from 60 m2/ha..14.31514.315
total1.15774.3375.33
Northwestern Alpsto 19 m2/ha0.77119.01219.712
20-39 m2/ha1.84421.81123.610
40-59 m2/ha1.45012.11613.615
from 60 m2/ha0.7715.4256.124
total4.62758.3462.94
Central Alpsto 19 m2/ha0.7707.7208.419
20-39 m2/ha0.7708.7189.417
40-59 m2/ha1.4496.2227.619
from 60 m2/ha1.4492.4373.829
total4.12725.0829.17
Northeastern Alpsto 19 m2/ha1.84410.41712.215
20-39 m2/ha0.410010.41610.716
40-59 m2/ha1.1575.7246.821
from 60 m2/ha0.41004.3274.726
total3.63030.8634.45
Southwestern Alpsto 19 m2/ha3.83044.4748.27
20-39 m2/ha2.43735.0937.48
40-59 m2/ha1.74419.51221.312
from 60 m2/ha0.31007.2217.621
total8.220106.23114.43
Southeastern Alpsto 19 m2/ha2.14151.8753.97
20-39 m2/ha0.77152.3753.07
40-59 m2/ha0.77131.31032.09
from 60 m2/ha0.41009.5199.918
total3.930145.02148.92
Southern Alpsto 19 m2/ha3.93057.1761.06
20-39 m2/ha5.32554.2759.56
40-59 m2/ha2.14124.11126.211
from 60 m2/ha0.41006.7227.122
total11.717142.13153.82
Switzerlandto 19 m2/ha14.415360.73375.23
20-39 m2/ha14.815447.92462.72
40-59 m2/ha9.919259.33269.13
from 60 m2/ha3.53188.6692.16
total42.691156.511199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161977/148356

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · 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 assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical....9.54.58.35.610.09.511.85.59.12.6
less stable55.516.650.035.442.97.645.710.260.115.558.88.450.44.5
stable44.516.650.035.447.67.746.010.229.914.529.57.840.54.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.10.62.50.67.10.815.12.27.91.56.71.25.90.4
less stable31.22.037.71.847.41.641.13.035.12.647.32.540.70.9
stable66.72.059.81.845.61.643.83.057.02.746.12.553.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.00.62.50.67.20.814.52.18.01.57.11.26.00.4
less stable31.62.037.81.847.21.641.52.935.82.648.22.441.10.8
stable66.42.059.81.845.61.644.02.956.22.744.82.452.90.8
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 #161978/148357

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · 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 assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....1.4500.7710.41001.4503.930
less stable1.8450.41006.4233.8302.1417.12221.513
stable1.4500.41007.1223.8301.1583.63117.314
total3.2330.77114.9158.2203.53112.11742.79
outside perimetercritical4.0306.42324.41214.1159.5199.71868.07
less stable60.2797.35163.5438.4842.0869.06470.32
stable128.73154.23157.2440.8868.1567.26616.22
total192.82257.91345.1293.33119.53145.931154.51
totalcritical4.0306.42325.81114.7149.81811.21771.87
less stable62.0697.65169.9442.1744.1876.15491.92
stable130.13154.63164.3444.6769.1570.86633.52
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161979/148358

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability %± %± %±
AGcritical......
less stable..37.74.437.74.4
stable..62.34.462.34.4
total..100.0.100.0.
AIcritical......
less stable..30.811.830.811.8
stable..69.211.869.211.8
total..100.0.100.0.
ARcritical..3.83.83.83.8
less stable..42.69.942.69.9
stable..53.69.953.69.9
total..100.0.100.0.
BEcritical..5.11.04.91.0
less stable41.011.942.62.242.52.2
stable59.011.952.32.352.52.2
total100.0.100.0.100.0.
BL/BScritical......
less stable100.0.36.16.837.46.8
stable..63.96.962.66.8
total100.0.100.0.100.0.
FRcritical..4.31.94.31.9
less stable..46.64.746.64.7
stable..49.14.749.14.7
total..100.0.100.0.
GEcritical......
less stable..29.518.729.518.7
stable..70.518.770.518.7
total..100.0.100.0.
GLcritical14.313.310.14.810.74.6
less stable42.918.952.68.051.27.4
stable42.918.937.37.738.17.1
total100.0.100.0.100.0.
GRcritical14.27.66.61.17.01.1
less stable52.410.937.32.237.92.1
stable33.410.356.12.255.12.2
total100.0.100.0.100.0.
JUcritical..4.72.34.62.2
less stable33.327.436.45.236.35.2
stable66.727.358.85.459.15.3
total100.0.100.0.100.0.
LUcritical..8.52.58.52.5
less stable..41.14.441.14.4
stable..50.44.450.44.4
total..100.0.100.0.
NEcritical......
less stable..31.05.031.05.0
stable..69.05.069.05.0
total..100.0.100.0.
NWcritical..5.35.25.05.0
less stable..68.410.865.010.8
stable100.0.26.310.330.010.5
total100.0.100.0.100.0.
OWcritical..7.43.67.23.5
less stable100.0.43.86.845.86.7
stable..48.86.947.06.8
total100.0.100.0.100.0.
SGcritical20.017.93.31.43.81.5
less stable20.017.952.34.051.34.0
stable60.022.044.44.044.94.0
total100.0.100.0.100.0.
SHcritical..2.82.82.82.8
less stable..25.07.325.07.3
stable..72.27.472.27.4
total..100.0.100.0.
SOcritical..1.21.21.21.2
less stable100.0.34.95.336.55.2
stable..63.95.362.45.3
total100.0.100.0.100.0.
SZcritical..9.13.38.63.1
less stable25.021.842.85.742.05.5
stable75.021.748.15.749.45.6
total100.0.100.0.100.0.
TGcritical..2.81.92.81.9
less stable..42.15.942.15.9
stable..55.15.955.15.9
total..100.0.100.0.
TIcritical8.75.97.31.47.41.4
less stable65.29.949.32.850.32.7
stable26.19.243.42.842.32.7
total100.0.100.0.100.0.
URcritical22.213.98.74.210.84.2
less stable44.416.749.47.348.66.7
stable33.315.841.97.240.66.6
total100.0.100.0.100.0.
VDcritical..4.21.24.21.2
less stable100.0.32.42.932.92.9
stable..63.43.063.03.0
total100.0.100.0.100.0.
VScritical8.35.614.22.013.81.9
less stable45.710.240.72.841.12.7
stable46.010.245.02.845.12.7
total100.0.100.0.100.0.
ZGcritical......
less stable..33.812.633.812.6
stable..66.212.766.212.7
total..100.0.100.0.
ZHcritical..4.11.64.11.6
less stable..35.44.035.44.0
stable..60.54.060.54.0
total..100.0.100.0.
Switzerlandcritical9.02.65.80.45.90.4
less stable50.64.540.70.941.10.8
stable40.44.553.40.953.00.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #161980/148359

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand stability1000 ha± %1000 ha± %1000 ha± %
AGcritical......
less stable..18.51218.512
stable..30.6730.67
total..49.1249.12
AIcritical......
less stable..1.6391.639
stable..3.6223.622
total..5.2125.212
ARcritical..0.31000.3100
less stable..3.6253.625
stable..4.5184.518
total..8.468.46
BEcritical..8.5208.520
less stable2.43871.3673.65
stable3.43187.5590.95
total5.824167.32173.12
BL/BScritical......
less stable0.41007.3197.719
stable..13.01213.012
total0.410020.3520.75
FRcritical..1.9441.944
less stable..20.21020.210
stable..21.31021.310
total..43.3343.33
GEcritical......
less stable..0.9650.965
stable..2.2342.234
total..3.1203.120
GLcritical0.41001.5491.943
less stable1.2578.1189.216
stable1.2575.7236.920
total2.73615.31018.07
GRcritical1.05811.41712.516
less stable3.93064.0667.86
stable2.53896.2498.74
total7.421171.62179.02
JUcritical..1.6491.649
less stable0.410012.01512.415
stable0.87019.41020.29
total1.25733.0434.23
LUcritical..3.5293.529
less stable..16.81116.811
stable..20.5920.59
total..40.7340.73
NEcritical......
less stable..8.7178.717
stable..19.4919.49
total..28.2428.24
NWcritical..0.41000.4100
less stable..5.0195.019
stable0.41001.9402.336
total0.41007.3107.78
OWcritical..1.5491.549
less stable0.7708.6169.315
stable..9.6169.616
total0.77019.6620.45
SGcritical0.41001.8442.240
less stable0.410028.9929.39
stable1.15724.61025.610
total1.84455.3457.14
SHcritical..0.41000.4100
less stable..3.2293.229
stable..9.3119.311
total..12.8312.83
SOcritical..0.41000.4100
less stable0.87011.01611.715
stable..20.1920.19
total0.87031.4432.23
SZcritical..2.5362.536
less stable0.410011.91412.314
stable1.15713.41314.512
total1.44927.9529.34
TGcritical..0.6700.670
less stable..9.1159.115
stable..11.91111.911
total..21.7421.74
TIcritical0.7718.4209.119
less stable5.42556.8662.26
stable2.14150.1752.37
total8.220115.43123.62
URcritical0.7701.4502.040
less stable1.3497.8199.117
stable1.0576.6197.617
total3.03115.71118.78
VDcritical..4.2304.230
less stable0.87132.2933.09
stable..63.2563.25
total0.87199.62100.32
VScritical0.77115.11415.814
less stable3.83043.3747.07
stable3.83047.8751.67
total8.220106.23114.43
ZGcritical......
less stable..2.1372.137
stable..4.2214.221
total..6.376.37
ZHcritical..2.1402.140
less stable..18.31218.312
stable..31.4731.47
total..51.8251.82
Switzerlandcritical3.93067.4771.37
less stable21.713471.22492.92
stable17.314618.02635.32
total42.891156.611199.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #161981/148360

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %±
inside perimetercritical......11.43.89.15.09.02.6
less stable55.616.6100.0.37.517.145.76.060.58.550.54.5
stable44.416.6..62.517.142.95.930.48.040.54.5
total100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.20.62.40.66.81.09.30.96.61.25.90.4
less stable31.02.037.61.945.62.042.51.547.32.540.70.9
stable66.82.060.01.947.62.048.21.546.12.553.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.20.62.40.66.71.09.40.96.81.26.00.4
less stable31.42.037.71.945.52.042.71.548.32.441.00.8
stable66.52.059.91.947.82.047.91.544.92.453.00.9
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161982/148361

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical......2.8351.1583.830
less stable1.8450.41001.15811.1177.12221.413
stable1.550..1.84510.4183.63117.214
total3.3330.41002.93524.21211.71742.49
outside perimetercritical4.4295.62514.81533.7109.31967.97
less stable61.7786.8599.85153.9467.26469.42
stable133.23138.53104.15174.6465.56616.02
total199.31231.01218.72362.32142.131153.31
totalcritical4.4295.62514.81536.5910.41871.77
less stable63.5687.25100.95165.0474.35490.92
stable134.73138.53105.95185.0369.16633.22
total202.61231.31221.62386.51153.821195.81

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161983/148362

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · 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
rockfall SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical....16.07.38.35.618.111.69.15.09.02.6
less stable59.915.550.011.836.09.645.710.254.715.060.58.550.54.5
stable40.115.550.011.848.010.046.010.227.213.430.48.040.54.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.30.47.31.16.31.314.22.07.21.36.61.25.90.4
less stable34.61.448.42.146.62.640.72.836.92.447.32.540.80.9
stable63.11.444.32.147.12.645.02.855.92.446.12.553.40.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.30.47.11.17.01.313.81.97.51.36.81.26.00.4
less stable34.81.448.42.145.92.541.12.737.32.448.32.441.10.8
stable62.91.444.52.147.12.545.12.755.22.444.92.452.90.8
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, 03.11.2014 #161984/148363

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · 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
rockfall SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....1.4500.7710.7711.1583.830
less stable2.1413.2333.1333.8302.1417.12221.513
stable1.4503.2334.1283.8301.1583.63117.214
total3.6326.5238.6198.2203.93011.71742.59
outside perimetercritical10.01914.8158.12115.11410.5189.31967.97
less stable148.8498.1559.5643.3753.4767.26470.42
stable271.6289.8560.2647.8781.1565.56615.92
total430.41202.72127.83106.23145.02142.131154.11
totalcritical10.01914.8159.51915.81411.21710.41871.77
less stable151.04101.3562.6647.0755.6774.35491.82
stable273.0293.1564.3651.6782.1569.16633.12
total434.01209.22136.52114.43148.92153.821196.71

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161985/148364

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionstand stability %± %± %±
Western Juracritical..2.30.72.30.7
less stable49.817.729.62.230.02.2
stable50.217.768.02.367.72.2
total100.0.100.0.100.0.
Eastern Juracritical..1.71.21.61.2
less stable100.0.35.64.436.14.3
stable..62.84.462.24.4
total100.0.100.0.100.0.
Western Plateaucritical..2.51.52.51.5
less stable..34.74.434.74.4
stable..62.84.562.84.5
total..100.0.100.0.
Central Plateaucritical..2.71.12.71.1
less stable100.0.38.43.338.73.3
stable..58.93.358.63.3
total100.0.100.0.100.0.
Eastern Plateaucritical..2.20.82.20.8
less stable..38.22.738.22.7
stable..59.62.859.62.8
total..100.0.100.0.
Western Pre-Alpscritical..5.82.15.72.1
less stable..48.34.547.94.5
stable100.0.45.94.546.44.5
total100.0.100.0.100.0.
Central Pre-Alpscritical..8.71.78.51.7
less stable50.025.046.23.046.33.0
stable50.025.045.13.045.23.0
total100.0.100.0.100.0.
Eastern Pre-Alpscritical..4.81.54.71.5
less stable33.327.343.33.443.13.4
stable66.727.351.93.552.13.4
total100.0.100.0.100.0.
Northwestern Alpscritical..6.11.95.71.7
less stable53.813.852.13.952.23.8
stable46.213.941.83.942.13.7
total100.0.100.0.100.0.
Central Alpscritical16.710.88.53.39.63.2
less stable41.714.345.85.945.25.5
stable41.714.345.75.945.15.5
total100.0.100.0.100.0.
Northeastern Alpscritical20.012.78.13.09.43.0
less stable30.014.554.65.452.15.1
stable50.015.937.25.238.65.0
total100.0.100.0.100.0.
Southwestern Alpscritical8.35.614.22.013.81.9
less stable45.710.240.72.841.12.7
stable46.010.245.02.845.12.7
total100.0.100.0.100.0.
Southeastern Alpscritical18.111.67.21.37.51.3
less stable54.715.036.92.437.32.4
stable27.213.455.92.455.22.4
total100.0.100.0.100.0.
Southern Alpscritical9.15.06.61.26.81.2
less stable60.58.547.32.548.32.4
stable30.48.046.12.544.92.4
total100.0.100.0.100.0.
Switzerlandcritical9.02.65.90.46.00.4
less stable50.44.540.70.941.10.8
stable40.64.553.40.953.00.8
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161986/148365

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · stand stability · 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 regionstand stability1000 ha± %1000 ha± %1000 ha± %
Western Juracritical..3.6313.631
less stable1.45045.0846.48
stable1.450103.34104.74
total2.935151.82154.72
Eastern Juracritical..0.8700.870
less stable0.410017.01217.412
stable..30.0730.07
total0.410047.8248.22
Western Plateaucritical..1.2571.257
less stable..16.91316.913
stable..30.6830.68
total..48.7348.73
Central Plateaucritical..1.9401.940
less stable0.310026.4926.79
stable..40.5640.56
total0.310068.8269.12
Eastern Plateaucritical..2.5372.537
less stable..43.3743.37
stable..67.6567.65
total..113.32113.32
Western Pre-Alpscritical..2.6372.637
less stable..21.81021.810
stable0.410020.71021.110
total0.410045.1445.54
Central Pre-Alpscritical..8.6208.620
less stable0.77145.9746.67
stable0.77144.8745.67
total1.45099.32100.82
Eastern Pre-Alpscritical..3.6313.631
less stable0.410032.1832.58
stable0.77138.6739.37
total1.15774.3375.33
Northwestern Alpscritical..3.6313.631
less stable2.53730.4832.98
stable2.14024.31026.510
total4.62758.3462.94
Central Alpscritical0.7702.1402.835
less stable1.74411.51513.214
stable1.74411.41513.114
total4.12725.0829.17
Northeastern Alpscritical0.7702.5373.232
less stable1.15716.81217.911
stable1.84411.51513.314
total3.63030.8634.45
Southwestern Alpscritical0.77115.11415.814
less stable3.83043.3747.07
stable3.83047.8751.67
total8.220106.23114.43
Southeastern Alpscritical0.77110.51811.217
less stable2.14153.4755.67
stable1.15881.1582.15
total3.930145.02148.92
Southern Alpscritical1.1589.31910.418
less stable7.12267.2674.35
stable3.63165.5669.16
total11.717142.13153.82
Switzerlandcritical3.93067.9771.77
less stable21.513471.02492.52
stable17.314617.62634.92
total42.691156.511199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161987/148366

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · 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 assigneddegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
inside perimeter0-20%....2.42.4....2.92.91.71.2
21-40%11.310.6..2.42.48.65.8..2.92.94.21.8
41-60%....4.83.329.19.340.115.514.86.114.83.2
61-80%22.213.950.035.423.86.641.610.129.914.517.66.526.34.0
over 80%66.615.750.035.466.77.320.88.329.914.561.78.353.14.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-20%1.70.61.10.41.30.41.50.72.00.81.70.61.50.2
21-40%1.50.51.80.56.40.88.91.713.31.85.41.15.30.4
41-60%8.61.25.10.818.11.232.42.832.72.516.61.816.10.6
61-80%25.11.920.91.532.01.532.72.836.12.628.42.228.40.8
over 80%63.12.171.21.742.21.624.62.615.92.048.02.548.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%1.70.51.10.41.40.41.30.72.00.71.80.61.50.2
21-40%1.70.51.80.56.20.88.81.712.91.85.21.15.30.4
41-60%8.51.25.10.817.61.232.12.732.92.516.41.816.00.6
61-80%25.01.920.91.531.71.533.42.735.92.627.62.128.30.8
over 80%63.22.171.11.743.21.624.32.516.32.049.12.448.90.8
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 #161988/148367

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · 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 assigneddegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-20%....0.4100....0.41000.771
21-40%0.4100..0.41000.771..0.41001.845
41-60%....0.7712.4371.4501.8456.323
61-80%0.7710.41003.5313.4311.1582.14111.218
over 80%2.2410.41009.9191.7441.1587.52122.712
total3.2330.77114.9158.2203.53112.11742.79
outside perimeter0-20%3.3332.8354.6281.4502.4382.53817.014
21-40%2.9354.62821.9138.32015.9147.82161.47
41-60%16.61413.11662.5730.2939.1824.212185.74
61-80%48.3853.87110.4530.5943.1841.48327.53
over 80%121.74183.63145.6422.91119.01370.06562.92
total192.82257.91345.1293.33119.53145.931154.51
total0-20%3.3332.8355.0271.4502.4382.83517.714
21-40%3.3334.62822.3139.01915.9148.22163.27
41-60%16.61413.11663.2732.6940.5826.011192.04
61-80%49.0854.17114.0533.9944.2843.68338.83
over 80%123.93183.93155.5424.61120.11277.55585.62
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #161989/148368

NFI4b

forest area: rockfall SilvaProtect, modelled and assigned · degree of cover (aerial photo, 5 classes) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest
grid:
state 2009/13
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantondegree of cover (aerial photo, 5 classes) %± %± %±
AG0-20%..1.61.21.61.2
21-40%..4.11.84.11.8
41-60%..4.92.04.92.0
61-80%..13.93.113.93.1
over 80%..75.43.975.43.9
total..100.0.100.0.
AI0-20%......
21-40%......
41-60%..13.78.913.78.9
61-80%..24.711.024.711.0
over 80%..61.712.561.712.5
total..100.0.100.0.
AR0-20%......
21-40%......
41-60%..3.83.83.83.8
61-80%..30.69.230.69.2
over 80%..65.69.565.69.5
total..100.0.100.0.
BE0-20%..2.30.72.20.7
21-40%6.36.14.10.94.20.9
41-60%5.95.711.51.411.31.4
61-80%29.311.031.42.131.32.1
over 80%58.612.050.72.351.02.2
total100.0.100.0.100.0.
BL/BS0-20%..2.02.02.02.0
21-40%......
41-60%..4.02.83.92.8
61-80%100.0.6.03.47.93.8
over 80%..88.04.786.24.9
total100.0.100.0.100.0.
FR0-20%......
21-40%..4.21.94.21.9
41-60%..15.63.415.63.4
61-80%..29.34.229.34.2
over 80%..50.94.750.94.7
total..100.0.100.0.
GE0-20%......
21-40%......
41-60%..14.814.614.814.6
61-80%..14.814.614.814.6
over 80%..70.518.770.518.7
total..100.0.100.0.
GL0-20%..2.52.52.12.1
21-40%..12.45.210.54.5
41-60%14.313.312.45.212.64.9
61-80%..17.66.115.05.3
over 80%85.713.255.17.959.77.2
total100.0.100.0.100.0.
GR0-20%..2.00.61.90.6
21-40%..10.41.410.01.3
41-60%33.610.332.92.132.92.1
61-80%23.79.335.02.234.52.1
over 80%42.710.819.71.820.61.8
total100.0.100.0.100.0.
JU0-20%..1.21.21.11.1
21-40%......
41-60%..8.33.08.02.9
61-80%33.327.417.64.118.14.1
over 80%66.727.373.04.872.84.8
total100.0.100.0.100.0.
LU0-20%..2.31.32.31.3
21-40%..0.80.80.80.8
41-60%..15.43.215.43.2
61-80%..35.94.235.94.2
over 80%..45.64.445.64.4
total..100.0.100.0.
NE0-20%..1.41.41.41.4
21-40%......
41-60%..9.13.19.13.1
61-80%..36.15.236.15.2
over 80%..53.45.453.45.4
total..100.0.100.0.
NW0-20%......
21-40%......
41-60%..10.57.210.06.9
61-80%..26.310.325.09.9
over 80%100.0.63.211.365.010.9
total100.0.100.0.100.0.
OW0-20%..1.71.71.71.6
21-40%..5.43.05.22.9
41-60%..17.05.216.35.0
61-80%100.0.37.96.740.26.7
over 80%..38.16.736.76.5
total100.0.100.0.100.0.
SG0-20%..0.60.60.60.6
21-40%..5.21.85.01.7
41-60%..15.72.915.22.9
61-80%20.017.924.23.524.13.4
over 80%80.017.954.34.055.14.0
total100.0.100.0.100.0.
SH0-20%......
21-40%......
41-60%..2.82.82.82.8
61-80%..25.07.325.07.3
over 80%..72.27.672.27.6
total..100.0.100.0.
SO0-20%..1.21.21.21.2
21-40%..1.21.21.21.2
41-60%..2.41.72.41.7
61-80%..15.74.015.33.9
over 80%100.0.79.54.580.04.4
total100.0.100.0.100.0.
SZ0-20%......
21-40%..9.13.38.73.1
41-60%..19.54.518.54.3
61-80%..23.44.922.24.6
over 80%100.0.48.05.750.65.6
total100.0.100.0.100.0.
TG0-20%..2.81.92.81.9
21-40%..1.41.41.41.4
41-60%..2.81.92.81.9
61-80%..22.14.922.14.9
over 80%..71.15.471.15.4
total..100.0.100.0.
TI0-20%4.34.31.30.61.50.6
21-40%4.34.35.91.35.81.3
41-60%8.75.912.11.811.81.7
61-80%17.47.927.52.526.82.4
over 80%65.29.953.32.854.12.7
total100.0.100.0.100.0.
UR0-20%11.110.5..1.81.8
21-40%11.110.56.63.77.33.5
41-60%..25.76.421.75.6
61-80%33.315.829.66.730.26.2
over 80%44.416.738.07.139.06.6
total100.0.100.0.100.0.
VD0-20%..1.50.81.50.8
21-40%..4.51.34.51.3
41-60%..12.52.012.42.0
61-80%..28.12.827.92.8
over 80%100.0.53.33.153.73.1
total100.0.100.0.100.0.
VS0-20%..1.30.61.20.6
21-40%8.65.89.11.69.11.6
41-60%29.19.329.22.629.22.5
61-80%41.610.133.02.733.62.6
over 80%20.88.327.42.527.02.4
total100.0.100.0.100.0.
ZG0-20%..6.86.86.86.8
21-40%......
41-60%..13.59.213.59.2
61-80%..18.910.218.910.2
over 80%..60.813.060.813.0
total..100.0.100.0.
ZH0-20%......
21-40%..2.71.32.71.3
41-60%..4.11.64.11.6
61-80%..22.53.522.53.5
over 80%..70.73.870.73.8
total..100.0.100.0.
Switzerland0-20%1.61.11.50.21.50.2
21-40%4.11.85.30.45.30.4
41-60%14.73.216.00.615.90.6
61-80%26.24.028.10.828.10.8
over 80%53.44.549.10.849.30.8
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #161990/148369

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha....18.63.717.74.631.97.031.77.321.62.5
101-200 stems/ha....26.64.230.95.629.56.929.37.127.22.7
201-300 stems/ha53.913.8..23.94.022.05.015.95.521.96.523.32.5
301-400 stems/ha30.712.8..13.33.214.74.315.95.57.34.114.02.1
401-500 stems/ha15.410.0..8.02.57.33.26.83.87.34.17.91.6
501- 600 stems/ha....6.22.32.92.0....3.21.1
more than 600 stems/ha....3.51.74.42.5..2.42.42.91.0
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha24.31.928.61.727.01.543.53.336.92.840.42.430.80.8
101-200 stems/ha28.62.029.61.725.21.428.53.025.92.523.92.127.00.8
201-300 stems/ha24.91.923.21.621.41.411.82.118.12.217.11.920.90.7
301-400 stems/ha12.61.412.21.212.01.110.12.010.21.710.91.611.70.6
401-500 stems/ha4.90.94.40.87.30.94.41.45.91.45.21.15.60.4
501- 600 stems/ha3.20.81.00.43.70.60.90.62.30.91.50.62.30.3
more than 600 stems/ha1.50.51.10.43.40.60.90.60.70.51.00.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha23.71.828.61.726.11.437.62.836.22.639.62.330.00.8
101-200 stems/ha28.01.929.61.725.31.429.12.626.42.424.42.027.00.8
201-300 stems/ha25.51.923.21.621.71.314.22.017.82.117.51.821.10.7
301-400 stems/ha13.01.412.21.212.11.011.11.810.91.710.61.511.90.6
401-500 stems/ha5.10.94.40.87.40.85.11.36.01.35.41.15.80.4
501- 600 stems/ha3.10.71.00.43.90.61.30.72.00.81.40.52.40.3
more than 600 stems/ha1.50.51.10.43.50.61.70.80.60.41.10.51.90.2
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 #161991/148370

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha....7.5224.1285.0264.62721.213
101-200 stems/ha....10.7187.2214.6274.32926.711
201-300 stems/ha2.538..9.6195.1252.5373.23322.912
301-400 stems/ha1.450..5.3263.4312.5371.15813.716
401-500 stems/ha0.771..3.2331.7441.1581.1587.721
501- 600 stems/ha....2.5380.771....3.233
more than 600 stems/ha....1.4501.058..0.41002.835
total4.727..40.1923.31115.61414.61598.26
outside perimeter0-100 stems/ha46.5873.9686.4634.0939.6858.07338.43
101-200 stems/ha54.8776.4680.5622.31127.91034.39296.23
201-300 stems/ha47.6860.1768.579.21819.51324.511229.34
301-400 stems/ha24.11231.51038.397.92011.01715.714128.45
401-500 stems/ha9.41911.31723.4123.4316.4237.52161.47
501- 600 stems/ha6.1242.53811.7170.7712.5382.14125.612
more than 600 stems/ha2.9352.83511.0180.7710.7711.45019.613
total191.32258.61319.9278.24107.53143.431098.91
total0-100 stems/ha46.5873.9693.9638.1844.6862.66359.63
101-200 stems/ha54.8776.4691.2529.51032.5938.69322.93
201-300 stems/ha50.1760.1778.1614.41421.91227.710252.23
301-400 stems/ha25.61131.51043.6911.31713.41516.714142.15
401-500 stems/ha10.11811.31726.6115.1257.4218.52069.17
501- 600 stems/ha6.1242.53814.2161.4502.5382.14128.811
more than 600 stems/ha2.9352.83512.4171.7450.7711.84522.412
total196.01258.61360.01101.53123.02158.021197.21

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 07.11.2014 #161992/148371

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified) %± %± %±
AG0-100 stems/ha..41.04.441.04.4
101-200 stems/ha..31.14.231.14.2
201-300 stems/ha..17.23.417.23.4
301-400 stems/ha..8.22.58.22.5
401-500 stems/ha..0.80.80.80.8
501- 600 stems/ha..0.80.80.80.8
more than 600 stems/ha..0.80.80.80.8
total..100.0.100.0.
AI0-100 stems/ha..15.110.112.38.4
101-200 stems/ha......
201-300 stems/ha..22.711.918.59.9
301-400 stems/ha66.727.939.513.944.512.8
401-500 stems/ha33.328.07.67.512.38.4
501- 600 stems/ha......
more than 600 stems/ha..15.110.112.38.4
total100.0.100.0.100.0.
AR0-100 stems/ha..19.98.119.17.8
101-200 stems/ha..8.55.78.15.5
201-300 stems/ha..11.96.611.56.4
301-400 stems/ha..27.99.126.88.8
401-500 stems/ha100.0.19.98.123.08.4
501- 600 stems/ha..4.04.03.83.8
more than 600 stems/ha..8.05.57.75.3
total100.0.100.0.100.0.
BE0-100 stems/ha21.56.426.42.126.02.0
101-200 stems/ha28.57.028.32.128.32.0
201-300 stems/ha26.36.823.52.023.71.9
301-400 stems/ha11.95.011.71.511.71.4
401-500 stems/ha11.95.04.81.05.41.0
501- 600 stems/ha..3.70.93.40.8
more than 600 stems/ha..1.70.61.60.6
total100.0.100.0.100.0.
BL/BS0-100 stems/ha..25.66.225.66.2
101-200 stems/ha..25.66.225.66.2
201-300 stems/ha..33.56.733.56.7
301-400 stems/ha..5.93.35.93.3
401-500 stems/ha..5.93.35.93.3
501- 600 stems/ha..2.02.02.02.0
more than 600 stems/ha..1.61.61.61.6
total..100.0.100.0.
FR0-100 stems/ha33.327.323.04.023.23.9
101-200 stems/ha33.327.324.84.125.14.0
201-300 stems/ha..23.04.022.43.9
301-400 stems/ha33.327.313.33.213.83.2
401-500 stems/ha..9.72.89.52.7
501- 600 stems/ha..2.71.52.61.5
more than 600 stems/ha..3.51.73.51.7
total100.0.100.0.100.0.
GE0-100 stems/ha..44.320.144.320.1
101-200 stems/ha......
201-300 stems/ha..14.814.614.814.6
301-400 stems/ha..40.919.640.919.6
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..100.0.100.0.
GL0-100 stems/ha36.714.736.08.136.27.1
101-200 stems/ha18.311.819.56.719.35.8
201-300 stems/ha26.713.319.36.621.06.0
301-400 stems/ha..11.25.38.64.1
401-500 stems/ha..5.63.94.33.0
501- 600 stems/ha9.28.85.63.96.43.6
more than 600 stems/ha9.28.82.82.84.33.0
total100.0.100.0.100.0.
GR0-100 stems/ha26.65.534.62.233.62.1
101-200 stems/ha32.85.927.02.127.72.0
201-300 stems/ha15.64.518.31.818.01.7
301-400 stems/ha15.64.510.71.511.31.4
401-500 stems/ha7.83.46.71.26.81.1
501- 600 stems/ha1.61.52.00.72.00.6
more than 600 stems/ha..0.70.40.60.3
total100.0.100.0.100.0.
JU0-100 stems/ha..24.54.723.94.6
101-200 stems/ha..27.94.927.24.8
201-300 stems/ha50.035.523.24.623.84.6
301-400 stems/ha50.035.516.34.017.14.0
401-500 stems/ha..5.82.55.72.5
501- 600 stems/ha..1.21.21.11.1
more than 600 stems/ha..1.21.21.11.1
total100.0.100.0.100.0.
LU0-100 stems/ha..17.23.316.93.3
101-200 stems/ha..40.74.340.14.3
201-300 stems/ha50.035.519.73.520.23.6
301-400 stems/ha..10.32.710.22.7
401-500 stems/ha..5.62.15.52.0
501- 600 stems/ha..2.31.32.31.3
more than 600 stems/ha50.035.54.11.84.81.9
total100.0.100.0.100.0.
NE0-100 stems/ha..28.85.027.84.8
101-200 stems/ha..28.55.027.64.8
201-300 stems/ha100.0.23.84.726.44.8
301-400 stems/ha..14.13.813.63.7
401-500 stems/ha..2.41.72.31.6
501- 600 stems/ha..2.41.72.31.6
more than 600 stems/ha......
total100.0.100.0.100.0.
NW0-100 stems/ha..17.69.415.08.2
101-200 stems/ha33.327.811.88.015.08.2
201-300 stems/ha33.327.823.510.525.09.9
301-400 stems/ha..23.510.520.09.1
401-500 stems/ha33.327.85.95.810.06.9
501- 600 stems/ha..17.69.415.08.2
more than 600 stems/ha......
total100.0.100.0.100.0.
OW0-100 stems/ha..29.06.625.35.9
101-200 stems/ha41.418.520.95.923.55.8
201-300 stems/ha29.317.418.75.720.05.4
301-400 stems/ha14.713.616.85.416.55.1
401-500 stems/ha14.713.66.33.57.33.6
501- 600 stems/ha..2.12.11.81.8
more than 600 stems/ha..6.33.55.53.1
total100.0.100.0.100.0.
SG0-100 stems/ha20.012.721.63.421.53.3
101-200 stems/ha40.015.523.73.524.73.4
201-300 stems/ha10.09.525.03.624.03.4
301-400 stems/ha10.09.511.52.611.42.5
401-500 stems/ha..10.82.610.12.4
501- 600 stems/ha10.09.54.11.64.41.6
more than 600 stems/ha10.09.53.41.53.81.5
total100.0.100.0.100.0.
SH0-100 stems/ha..13.95.813.95.8
101-200 stems/ha..30.67.830.67.8
201-300 stems/ha..30.67.830.67.8
301-400 stems/ha..5.63.95.63.9
401-500 stems/ha..16.76.316.76.3
501- 600 stems/ha..2.82.82.82.8
more than 600 stems/ha......
total..100.0.100.0.
SO0-100 stems/ha..27.14.827.14.8
101-200 stems/ha..31.85.131.85.1
201-300 stems/ha..18.84.318.84.3
301-400 stems/ha..14.13.814.13.8
401-500 stems/ha..5.92.65.92.6
501- 600 stems/ha..1.21.21.21.2
more than 600 stems/ha..1.21.21.21.2
total..100.0.100.0.
SZ0-100 stems/ha28.617.221.64.822.24.6
101-200 stems/ha14.313.328.45.327.25.0
201-300 stems/ha14.313.324.35.023.54.7
301-400 stems/ha42.918.816.24.318.54.3
401-500 stems/ha..6.72.96.22.7
501- 600 stems/ha..1.31.31.21.2
more than 600 stems/ha..1.41.41.31.2
total100.0.100.0.100.0.
TG0-100 stems/ha..26.25.226.25.2
101-200 stems/ha..27.95.327.95.3
201-300 stems/ha..23.85.123.85.1
301-400 stems/ha..13.84.113.84.1
401-500 stems/ha..5.52.75.52.7
501- 600 stems/ha..1.41.41.41.4
more than 600 stems/ha..1.41.41.41.4
total..100.0.100.0.
TI0-100 stems/ha37.19.342.22.841.82.7
101-200 stems/ha22.28.023.92.423.82.3
201-300 stems/ha29.68.817.22.118.22.1
301-400 stems/ha3.73.611.01.810.41.6
401-500 stems/ha3.73.63.51.03.51.0
501- 600 stems/ha..1.30.61.20.6
more than 600 stems/ha3.73.60.90.51.20.6
total100.0.100.0.100.0.
UR0-100 stems/ha20.012.737.97.234.76.4
101-200 stems/ha20.012.717.15.517.65.1
201-300 stems/ha30.014.612.84.915.94.9
301-400 stems/ha10.09.515.05.314.14.7
401-500 stems/ha..6.43.65.33.0
501- 600 stems/ha20.012.74.33.07.13.4
more than 600 stems/ha..6.43.65.33.0
total100.0.100.0.100.0.
VD0-100 stems/ha9.18.727.12.826.42.7
101-200 stems/ha18.211.629.82.929.32.8
201-300 stems/ha18.211.624.12.723.82.6
301-400 stems/ha18.211.69.11.89.51.8
401-500 stems/ha9.18.74.01.24.21.2
501- 600 stems/ha18.211.63.91.24.51.3
more than 600 stems/ha9.18.72.00.92.30.9
total100.0.100.0.100.0.
VS0-100 stems/ha16.54.443.93.137.92.7
101-200 stems/ha28.75.326.62.727.02.4
201-300 stems/ha24.65.013.02.115.62.0
301-400 stems/ha15.14.29.61.810.81.7
401-500 stems/ha8.23.25.01.35.71.3
501- 600 stems/ha2.71.90.80.51.20.6
more than 600 stems/ha4.12.31.20.71.80.7
total100.0.100.0.100.0.
ZG0-100 stems/ha..33.812.633.812.6
101-200 stems/ha..27.011.927.011.9
201-300 stems/ha..20.310.820.310.8
301-400 stems/ha..13.59.213.59.2
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..5.45.15.45.1
total..100.0.100.0.
ZH0-100 stems/ha..30.63.830.63.8
101-200 stems/ha..24.53.624.53.6
201-300 stems/ha..27.93.727.93.7
301-400 stems/ha..11.62.611.62.6
401-500 stems/ha..4.81.84.81.8
501- 600 stems/ha......
more than 600 stems/ha..0.70.70.70.7
total..100.0.100.0.
Switzerland0-100 stems/ha21.72.530.90.830.10.8
101-200 stems/ha27.22.726.90.827.00.8
201-300 stems/ha23.22.520.90.721.10.7
301-400 stems/ha14.02.111.70.611.90.6
401-500 stems/ha7.81.65.60.45.70.4
501- 600 stems/ha3.31.12.30.32.40.3
more than 600 stems/ha2.91.01.80.21.90.2
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #161993/148372

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified)1000 ha± %1000 ha± %1000 ha± %
AG0-100 stems/ha..20.11120.111
101-200 stems/ha..15.31415.314
201-300 stems/ha..8.5208.520
301-400 stems/ha..4.0304.030
401-500 stems/ha..0.41000.4100
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..0.41000.4100
total..49.1249.12
AI0-100 stems/ha..0.6690.669
101-200 stems/ha......
201-300 stems/ha..1.0541.054
301-400 stems/ha0.6691.7422.333
401-500 stems/ha0.31000.31000.669
501- 600 stems/ha......
more than 600 stems/ha..0.6690.669
total1.0544.3185.212
AR0-100 stems/ha..1.6411.641
101-200 stems/ha..0.7710.771
201-300 stems/ha..1.0551.055
301-400 stems/ha..2.2332.233
401-500 stems/ha0.31001.6411.936
501- 600 stems/ha..0.31000.3100
more than 600 stems/ha..0.6690.669
total0.31008.178.46
BE0-100 stems/ha3.13341.9845.08
101-200 stems/ha4.12944.9849.07
201-300 stems/ha3.83037.2941.08
301-400 stems/ha1.74518.51320.212
401-500 stems/ha1.7457.6219.319
501- 600 stems/ha..5.8245.824
more than 600 stems/ha..2.7352.735
total14.415158.72173.12
BL/BS0-100 stems/ha..5.3245.324
101-200 stems/ha..5.3245.324
201-300 stems/ha..6.9206.920
301-400 stems/ha..1.2571.257
401-500 stems/ha..1.2571.257
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..0.31000.3100
total..20.7520.75
FR0-100 stems/ha0.41009.71810.117
101-200 stems/ha0.410010.51710.816
201-300 stems/ha..9.7189.718
301-400 stems/ha0.41005.6246.023
401-500 stems/ha..4.1294.129
501- 600 stems/ha..1.1571.157
more than 600 stems/ha..1.5491.549
total1.15742.2443.33
GE0-100 stems/ha..1.4481.448
101-200 stems/ha......
201-300 stems/ha..0.51000.5100
301-400 stems/ha..1.3541.354
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha......
total..3.1203.120
GL0-100 stems/ha1.5495.0256.521
101-200 stems/ha0.8702.7363.531
201-300 stems/ha1.1572.7363.830
301-400 stems/ha..1.5491.549
401-500 stems/ha..0.8700.870
501- 600 stems/ha0.41000.8701.257
more than 600 stems/ha0.41000.41000.870
total4.22813.81118.07
GR0-100 stems/ha5.92454.2760.17
101-200 stems/ha7.32142.3849.67
201-300 stems/ha3.53128.71032.110
301-400 stems/ha3.53116.81420.312
401-500 stems/ha1.74510.51812.216
501- 600 stems/ha0.31003.2333.531
more than 600 stems/ha..1.0581.058
total22.412156.63179.02
JU0-100 stems/ha..8.2198.219
101-200 stems/ha..9.3189.318
201-300 stems/ha0.41007.8208.119
301-400 stems/ha0.41005.5255.824
401-500 stems/ha..1.9441.944
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..0.41000.4100
total0.87033.4334.23
LU0-100 stems/ha..6.9206.920
101-200 stems/ha..16.31116.311
201-300 stems/ha0.31007.9188.218
301-400 stems/ha..4.1274.127
401-500 stems/ha..2.3372.337
501- 600 stems/ha..0.9570.957
more than 600 stems/ha0.31001.6441.940
total0.67040.1340.73
NE0-100 stems/ha..7.8187.818
101-200 stems/ha..7.8187.818
201-300 stems/ha1.0576.5207.419
301-400 stems/ha..3.8273.827
401-500 stems/ha..0.6700.670
501- 600 stems/ha..0.6700.670
more than 600 stems/ha......
total1.05727.2528.24
NW0-100 stems/ha..1.2551.255
101-200 stems/ha0.41000.8691.255
201-300 stems/ha0.41001.5461.940
301-400 stems/ha..1.5461.546
401-500 stems/ha0.41000.41000.869
501- 600 stems/ha..1.2551.255
more than 600 stems/ha......
total1.2556.5137.78
OW0-100 stems/ha..5.2245.224
101-200 stems/ha1.1583.7294.825
201-300 stems/ha0.7703.3314.128
301-400 stems/ha0.41003.0333.431
401-500 stems/ha0.41001.1571.549
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..1.1571.157
total2.53717.8720.45
SG0-100 stems/ha0.77011.51612.316
101-200 stems/ha1.45012.71514.114
201-300 stems/ha0.410013.41513.715
301-400 stems/ha0.41006.1236.522
401-500 stems/ha..5.8245.824
501- 600 stems/ha0.41002.2402.537
more than 600 stems/ha0.41001.8442.240
total3.63153.5457.14
SH0-100 stems/ha..1.8421.842
101-200 stems/ha..3.9263.926
201-300 stems/ha..3.9263.926
301-400 stems/ha..0.7700.770
401-500 stems/ha..2.1382.138
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha......
total..12.8312.83
SO0-100 stems/ha..8.7198.719
101-200 stems/ha..10.21610.216
201-300 stems/ha..6.1236.123
301-400 stems/ha..4.5274.527
401-500 stems/ha..1.9441.944
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..0.41000.4100
total..32.2332.23
SZ0-100 stems/ha0.7705.8236.522
101-200 stems/ha0.41007.6198.019
201-300 stems/ha0.41006.5216.921
301-400 stems/ha1.1574.3275.423
401-500 stems/ha..1.8441.844
501- 600 stems/ha..0.41000.4100
more than 600 stems/ha..0.41000.4100
total2.53626.8629.34
TG0-100 stems/ha..5.7205.720
101-200 stems/ha..6.1206.120
201-300 stems/ha..5.2225.222
301-400 stems/ha..3.0303.030
401-500 stems/ha..1.2491.249
501- 600 stems/ha..0.31000.3100
more than 600 stems/ha..0.31000.3100
total..21.7421.74
TI0-100 stems/ha3.63148.1751.77
101-200 stems/ha2.14127.31029.410
201-300 stems/ha2.93519.61322.512
301-400 stems/ha0.410012.51612.916
401-500 stems/ha0.41003.9304.328
501- 600 stems/ha..1.4501.450
more than 600 stems/ha0.41001.1581.450
total9.719113.93123.62
UR0-100 stems/ha0.7705.8236.521
101-200 stems/ha0.7702.6343.330
201-300 stems/ha1.0572.0393.031
301-400 stems/ha0.31002.3362.634
401-500 stems/ha..1.0571.057
501- 600 stems/ha0.7700.7701.349
more than 600 stems/ha..1.0571.057
total3.33015.41118.78
VD0-100 stems/ha0.410026.11126.511
101-200 stems/ha0.87128.71029.410
201-300 stems/ha0.87123.21123.911
301-400 stems/ha0.8718.7209.519
401-500 stems/ha0.41003.8314.230
501- 600 stems/ha0.8713.8314.528
more than 600 stems/ha0.41001.9442.340
total4.23096.13100.32
VS0-100 stems/ha4.12939.2843.48
101-200 stems/ha7.22123.71130.99
201-300 stems/ha6.22311.71617.813
301-400 stems/ha3.8308.61912.316
401-500 stems/ha2.1414.5276.522
501- 600 stems/ha0.7710.7711.450
more than 600 stems/ha1.0581.0582.141
total25.01189.44114.43
ZG0-100 stems/ha..2.1372.137
101-200 stems/ha..1.7441.744
201-300 stems/ha..1.3531.353
301-400 stems/ha..0.9680.968
401-500 stems/ha......
501- 600 stems/ha......
more than 600 stems/ha..0.31000.3100
total..6.376.37
ZH0-100 stems/ha..15.91315.913
101-200 stems/ha..12.71512.715
201-300 stems/ha..14.51314.513
301-400 stems/ha..6.0236.023
401-500 stems/ha..2.5372.537
501- 600 stems/ha......
more than 600 stems/ha..0.41000.4100
total..51.8251.82
Switzerland0-100 stems/ha21.213339.93361.13
101-200 stems/ha26.611296.73323.33
201-300 stems/ha22.712230.24252.93
301-400 stems/ha13.616128.65142.25
401-500 stems/ha7.62161.3768.97
501- 600 stems/ha3.23325.61228.811
more than 600 stems/ha2.83519.41322.213
total97.861101.711199.51

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 07.11.2014 #161994/148373

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified) %± %± %± %± %± %±
inside perimeter0-100 stems/ha....10.85.123.23.130.87.421.52.5
101-200 stems/ha....32.47.727.43.230.87.427.22.7
201-300 stems/ha53.813.8..16.26.123.23.120.56.523.32.5
301-400 stems/ha30.812.8..18.96.413.12.57.74.314.02.1
401-500 stems/ha15.410.0..13.55.66.31.87.74.37.91.6
501- 600 stems/ha....2.72.74.21.5..3.21.0
more than 600 stems/ha....5.43.72.61.22.62.52.91.0
total100.0...100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha23.41.830.71.820.91.737.51.640.32.530.70.8
101-200 stems/ha28.81.930.01.827.21.925.01.423.82.127.00.8
201-300 stems/ha26.41.920.81.622.51.718.21.316.91.920.90.7
301-400 stems/ha12.21.412.51.313.01.410.21.011.11.611.70.6
401-500 stems/ha5.41.03.60.78.11.15.60.85.31.15.60.4
501- 600 stems/ha2.60.71.20.44.30.82.10.51.50.62.30.3
more than 600 stems/ha1.30.51.20.44.00.81.40.41.00.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha22.91.830.71.820.31.635.01.439.42.330.00.8
101-200 stems/ha28.11.930.01.827.51.825.41.324.52.127.00.8
201-300 stems/ha27.01.920.81.622.11.719.11.217.21.821.10.7
301-400 stems/ha12.61.412.51.313.31.410.70.910.81.511.90.6
401-500 stems/ha5.61.03.60.78.51.15.70.75.51.15.80.4
501- 600 stems/ha2.50.71.20.44.20.82.40.51.40.62.40.3
more than 600 stems/ha1.30.51.20.44.10.81.60.41.20.51.90.2
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 #161995/148374

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha....1.45015.2154.32920.913
101-200 stems/ha....4.32918.0144.32926.611
201-300 stems/ha2.638..2.24115.2152.83522.812
301-400 stems/ha1.550..2.5388.6201.15813.716
401-500 stems/ha0.771..1.8454.1291.1587.721
501- 600 stems/ha....0.41002.835..3.133
more than 600 stems/ha....0.7711.7450.41002.835
total4.727..13.31665.7713.81597.66
outside perimeter0-100 stems/ha46.3871.0643.68120.2556.37337.53
101-200 stems/ha56.9769.3656.6780.1633.49296.33
201-300 stems/ha52.2748.1846.8858.5723.611229.34
301-400 stems/ha24.11228.81027.01132.81015.614128.45
401-500 stems/ha10.6188.42016.91418.0147.42161.47
501- 600 stems/ha5.1262.8359.0206.6232.14125.712
more than 600 stems/ha2.6382.8358.3214.5281.45019.613
total197.82231.31208.32320.82139.931098.11
total0-100 stems/ha46.3871.0645.08135.4460.66358.43
101-200 stems/ha56.9769.3660.9798.1537.69322.83
201-300 stems/ha54.8748.1849.0873.7626.511252.13
301-400 stems/ha25.61128.81029.51041.5916.614142.05
401-500 stems/ha11.3178.42018.71322.2128.52069.27
501- 600 stems/ha5.1262.8359.4199.4192.14128.811
more than 600 stems/ha2.6382.8359.0206.2231.84522.412
total202.61231.31221.62386.51153.821195.81

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 07.11.2014 #161996/148375

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified) %± %± %± %± %± %± %±
inside perimeter0-100 stems/ha..18.65.123.26.416.54.428.96.330.87.421.52.5
101-200 stems/ha..30.56.023.36.528.75.328.86.330.87.427.22.7
201-300 stems/ha53.913.823.75.518.76.024.65.019.25.520.56.523.32.5
301-400 stems/ha30.712.810.23.916.25.615.14.215.45.07.74.313.92.1
401-500 stems/ha15.410.010.23.94.63.28.23.25.83.27.74.37.91.6
501- 600 stems/ha..3.42.49.34.42.71.91.91.9..3.21.1
more than 600 stems/ha..3.42.44.63.24.12.3..2.62.52.91.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeter0-100 stems/ha27.41.325.31.926.12.343.93.135.12.540.32.530.80.8
101-200 stems/ha29.41.327.42.020.72.226.62.727.72.323.82.127.00.8
201-300 stems/ha23.31.222.81.821.62.213.02.118.92.016.91.920.90.7
301-400 stems/ha12.30.910.41.314.81.99.61.810.51.611.11.611.70.6
401-500 stems/ha4.40.66.91.18.51.55.01.35.41.25.31.15.60.4
501- 600 stems/ha1.80.44.40.93.41.00.80.51.90.71.50.62.30.3
more than 600 stems/ha1.30.32.70.74.81.11.20.70.50.41.00.51.80.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
total0-100 stems/ha27.11.324.71.825.82.237.92.734.32.339.42.330.00.8
101-200 stems/ha29.11.327.81.921.02.127.02.427.92.224.52.127.00.8
201-300 stems/ha23.71.222.91.721.32.115.62.018.91.917.21.821.10.7
301-400 stems/ha12.51.010.31.314.91.810.81.711.11.510.81.511.90.6
401-500 stems/ha4.50.67.21.18.11.45.71.35.41.15.51.15.80.4
501- 600 stems/ha1.80.44.30.84.01.01.20.61.90.71.40.62.40.3
more than 600 stems/ha1.20.32.80.74.81.11.80.70.50.31.20.51.90.2
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 #161997/148376

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter0-100 stems/ha..4.0303.4314.1295.3254.32921.113
101-200 stems/ha..6.5233.5317.2215.3254.32926.711
201-300 stems/ha2.5385.0262.8356.2233.5312.83522.812
301-400 stems/ha1.4502.2412.4383.8302.8351.15813.716
401-500 stems/ha0.7712.2410.7712.1411.1581.1587.721
501- 600 stems/ha..0.7711.4500.7710.4100..3.133
more than 600 stems/ha..0.7710.7711.058..0.41002.835
total4.72821.31214.91525.01118.31313.81598.06
outside perimeter0-100 stems/ha117.7547.6831.71039.2845.8856.37338.43
101-200 stems/ha126.3551.6725.21123.71136.2933.49296.43
201-300 stems/ha100.1542.9826.31111.71624.61123.611229.34
301-400 stems/ha52.9819.51317.9138.61913.71515.614128.25
401-500 stems/ha19.01313.01610.4184.5277.0227.42161.27
501- 600 stems/ha7.9218.3214.1280.7712.5382.14125.612
more than 600 stems/ha5.4265.0265.9241.0580.7711.45019.513
total429.31187.92121.6389.44130.63139.931098.71
total0-100 stems/ha117.7551.6835.2943.4851.1760.66359.53
101-200 stems/ha126.3558.1728.71030.9941.5837.69323.13
201-300 stems/ha102.7548.0829.11017.81328.11026.511252.13
301-400 stems/ha54.4821.61220.41212.31616.51416.614141.95
401-500 stems/ha19.71315.11511.1176.5228.1208.52069.07
501- 600 stems/ha7.9219.0205.5251.4502.8352.14128.711
more than 600 stems/ha5.4265.8256.6232.1410.7711.84522.312
total434.01209.22136.52114.43148.92153.821196.71

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 07.11.2014 #161998/148377

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified) %± %± %±
Western Jura0-100 stems/ha..23.42.122.72.0
101-200 stems/ha..28.42.227.52.1
201-300 stems/ha54.013.825.72.126.52.1
301-400 stems/ha30.712.813.81.714.31.7
401-500 stems/ha15.310.04.51.04.81.0
501- 600 stems/ha..2.90.82.80.8
more than 600 stems/ha..1.40.61.40.6
total100.0.100.0.100.0.
Eastern Jura0-100 stems/ha..23.83.923.83.9
101-200 stems/ha..30.44.230.44.2
201-300 stems/ha..28.74.128.74.1
301-400 stems/ha..6.62.36.62.3
401-500 stems/ha..8.22.58.22.5
501- 600 stems/ha..1.61.21.61.2
more than 600 stems/ha..0.70.70.70.7
total..100.0.100.0.
Western Plateau0-100 stems/ha..28.64.228.64.2
101-200 stems/ha..27.54.127.54.1
201-300 stems/ha..17.83.517.83.5
301-400 stems/ha..17.63.517.63.5
401-500 stems/ha..3.41.73.41.7
501- 600 stems/ha..3.41.73.41.7
more than 600 stems/ha..1.71.21.71.2
total..100.0.100.0.
Central Plateau0-100 stems/ha..29.43.129.43.1
101-200 stems/ha..35.93.235.93.2
201-300 stems/ha..19.32.619.32.6
301-400 stems/ha..9.42.09.42.0
401-500 stems/ha..3.21.23.21.2
501- 600 stems/ha..0.90.60.90.6
more than 600 stems/ha..1.90.91.90.9
total..100.0.100.0.
Eastern Plateau0-100 stems/ha..32.52.632.52.6
101-200 stems/ha..26.52.526.52.5
201-300 stems/ha..23.02.423.02.4
301-400 stems/ha..12.61.912.61.9
401-500 stems/ha..4.11.14.11.1
501- 600 stems/ha..0.60.40.60.4
more than 600 stems/ha..0.60.40.60.4
total..100.0.100.0.
Western Pre-Alps0-100 stems/ha44.116.622.83.924.33.9
101-200 stems/ha22.314.026.44.126.14.0
201-300 stems/ha..21.93.920.33.6
301-400 stems/ha11.210.610.52.910.52.8
401-500 stems/ha..9.62.88.92.6
501- 600 stems/ha11.210.63.51.74.11.8
more than 600 stems/ha11.210.65.32.15.72.1
total100.0.100.0.100.0.
Central Pre-Alps0-100 stems/ha..21.82.620.32.4
101-200 stems/ha40.011.032.62.933.12.8
201-300 stems/ha30.010.321.52.522.12.5
301-400 stems/ha10.06.711.11.911.01.9
401-500 stems/ha15.08.05.71.46.41.5
501- 600 stems/ha..5.01.34.61.3
more than 600 stems/ha5.04.92.30.92.50.9
total100.0.100.0.100.0.
Eastern Pre-Alps0-100 stems/ha..18.72.718.02.7
101-200 stems/ha25.015.320.72.820.92.8
201-300 stems/ha..24.13.023.22.9
301-400 stems/ha50.017.716.82.618.02.7
401-500 stems/ha25.015.310.32.110.92.2
501- 600 stems/ha..3.91.43.81.3
more than 600 stems/ha..5.41.65.21.5
total100.0.100.0.100.0.
Northwestern Alps0-100 stems/ha23.37.733.63.931.93.5
101-200 stems/ha26.78.119.23.320.53.0
201-300 stems/ha26.78.126.03.626.13.3
301-400 stems/ha10.05.58.92.49.12.2
401-500 stems/ha10.05.56.92.17.42.0
501- 600 stems/ha3.33.34.11.64.01.5
more than 600 stems/ha..1.41.01.10.8
total100.0.100.0.100.0.
Central Alps0-100 stems/ha23.410.333.45.831.45.1
101-200 stems/ha23.910.419.24.820.24.4
201-300 stems/ha23.410.316.44.517.84.2
301-400 stems/ha17.69.317.74.717.74.2
401-500 stems/ha..4.42.53.52.0
501- 600 stems/ha11.77.83.02.14.72.3
more than 600 stems/ha..5.92.94.72.3
total100.0.100.0.100.0.
Northeastern Alps0-100 stems/ha33.311.135.95.535.44.9
101-200 stems/ha22.29.823.14.822.94.3
201-300 stems/ha22.39.820.54.620.84.2
301-400 stems/ha..7.73.06.22.5
401-500 stems/ha..7.73.06.32.5
501- 600 stems/ha11.17.42.61.84.22.0
more than 600 stems/ha11.17.42.61.84.22.0
total100.0.100.0.100.0.
Southwestern Alps0-100 stems/ha16.54.443.93.137.92.7
101-200 stems/ha28.75.326.62.727.02.4
201-300 stems/ha24.65.013.02.115.62.0
301-400 stems/ha15.14.29.61.810.81.7
401-500 stems/ha8.23.25.01.35.71.3
501- 600 stems/ha2.71.90.80.51.20.6
more than 600 stems/ha4.12.31.20.71.80.7
total100.0.100.0.100.0.
Southeastern Alps0-100 stems/ha28.96.335.12.534.32.3
101-200 stems/ha28.86.327.72.327.92.2
201-300 stems/ha19.25.518.92.018.91.9
301-400 stems/ha15.45.010.51.611.11.5
401-500 stems/ha5.83.25.41.25.41.1
501- 600 stems/ha1.91.91.90.71.90.7
more than 600 stems/ha..0.50.40.50.3
total100.0.100.0.100.0.
Southern Alps0-100 stems/ha30.87.440.32.539.42.3
101-200 stems/ha30.87.423.82.124.52.1
201-300 stems/ha20.56.516.91.917.21.8
301-400 stems/ha7.74.311.11.610.81.5
401-500 stems/ha7.74.35.31.15.51.1
501- 600 stems/ha..1.50.61.40.6
more than 600 stems/ha2.62.51.00.51.20.5
total100.0.100.0.100.0.
Switzerland0-100 stems/ha21.62.530.70.829.90.8
101-200 stems/ha27.22.726.90.826.90.8
201-300 stems/ha23.32.520.90.721.10.7
301-400 stems/ha13.92.111.70.611.90.6
401-500 stems/ha7.91.65.60.45.80.4
501- 600 stems/ha3.21.12.40.32.40.3
more than 600 stems/ha2.91.01.80.21.90.2
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #161999/148378

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stem count/ha (DBH >= 24cm, 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 >= 24cm, classified)1000 ha± %1000 ha± %1000 ha± %
Western Jura0-100 stems/ha..35.0935.09
101-200 stems/ha..42.6842.68
201-300 stems/ha2.53838.6841.18
301-400 stems/ha1.45020.71222.112
401-500 stems/ha0.7716.8227.521
501- 600 stems/ha..4.3294.329
more than 600 stems/ha..2.1412.141
total4.627150.02154.72
Eastern Jura0-100 stems/ha..11.51611.516
101-200 stems/ha..14.61414.614
201-300 stems/ha..13.81413.814
301-400 stems/ha..3.2343.234
401-500 stems/ha..4.0304.030
501- 600 stems/ha..0.8700.870
more than 600 stems/ha..0.31000.3100
total..48.2248.22
Western Plateau0-100 stems/ha..14.01514.015
101-200 stems/ha..13.41513.415
201-300 stems/ha..8.7208.720
301-400 stems/ha..8.6208.620
401-500 stems/ha..1.6491.649
501- 600 stems/ha..1.6491.649
more than 600 stems/ha..0.8700.870
total..48.7348.73
Central Plateau0-100 stems/ha..20.31120.311
101-200 stems/ha..24.8924.89
201-300 stems/ha..13.31413.314
301-400 stems/ha..6.5216.521
401-500 stems/ha..2.2382.238
501- 600 stems/ha..0.6710.671
more than 600 stems/ha..1.3501.350
total..69.1269.12
Eastern Plateau0-100 stems/ha..36.8836.88
101-200 stems/ha..30.01030.010
201-300 stems/ha..26.11026.110
301-400 stems/ha..14.31514.315
401-500 stems/ha..4.6274.627
501- 600 stems/ha..0.7710.771
more than 600 stems/ha..0.7710.771
total..113.32113.32
Western Pre-Alps0-100 stems/ha1.5509.61811.116
101-200 stems/ha0.77011.11611.915
201-300 stems/ha..9.2189.218
301-400 stems/ha0.41004.4284.827
401-500 stems/ha..4.1294.129
501- 600 stems/ha0.41001.5491.944
more than 600 stems/ha0.41002.2402.637
total3.33342.1445.54
Central Pre-Alps0-100 stems/ha..20.41220.412
101-200 stems/ha2.93530.5933.39
201-300 stems/ha2.24020.11222.211
301-400 stems/ha0.77110.41811.117
401-500 stems/ha1.1585.4256.523
501- 600 stems/ha..4.7274.727
more than 600 stems/ha0.41002.2402.537
total7.22293.63100.82
Eastern Pre-Alps0-100 stems/ha..13.61513.615
101-200 stems/ha0.77115.01415.714
201-300 stems/ha..17.51317.513
301-400 stems/ha1.45012.11613.615
401-500 stems/ha0.7717.5218.220
501- 600 stems/ha..2.9352.935
more than 600 stems/ha..3.9303.930
total2.93572.5375.33
Northwestern Alps0-100 stems/ha2.53717.51320.012
101-200 stems/ha2.93510.01812.915
201-300 stems/ha2.93513.61516.413
301-400 stems/ha1.1574.6275.724
401-500 stems/ha1.1573.6314.727
501- 600 stems/ha0.41002.2402.537
more than 600 stems/ha..0.7710.771
total10.71752.2562.94
Central Alps0-100 stems/ha1.4497.8209.118
101-200 stems/ha1.4504.5265.923
201-300 stems/ha1.4493.8295.224
301-400 stems/ha1.0574.1275.224
401-500 stems/ha..1.0571.057
501- 600 stems/ha0.7700.7701.449
more than 600 stems/ha..1.4491.449
total5.92323.3929.17
Northeastern Alps0-100 stems/ha2.14010.01712.215
101-200 stems/ha1.4496.4227.919
201-300 stems/ha1.4505.7237.221
301-400 stems/ha..2.1402.140
401-500 stems/ha..2.2402.240
501- 600 stems/ha0.7700.7701.449
more than 600 stems/ha0.7700.7701.449
total6.42227.9734.45
Southwestern Alps0-100 stems/ha4.12939.2843.48
101-200 stems/ha7.22123.71130.99
201-300 stems/ha6.22311.71617.813
301-400 stems/ha3.8308.61912.316
401-500 stems/ha2.1414.5276.522
501- 600 stems/ha0.7710.7711.450
more than 600 stems/ha1.0581.0582.141
total25.01189.44114.43
Southeastern Alps0-100 stems/ha5.32545.8851.17
101-200 stems/ha5.32536.2941.58
201-300 stems/ha3.53124.61128.110
301-400 stems/ha2.83513.71516.514
401-500 stems/ha1.1587.0228.120
501- 600 stems/ha0.41002.5382.835
more than 600 stems/ha..0.7710.771
total18.313130.63148.92
Southern Alps0-100 stems/ha4.32956.3760.66
101-200 stems/ha4.32933.4937.69
201-300 stems/ha2.83523.61126.511
301-400 stems/ha1.15815.61416.614
401-500 stems/ha1.1587.4218.520
501- 600 stems/ha..2.1412.141
more than 600 stems/ha0.41001.4501.845
total13.815139.93153.82
Switzerland0-100 stems/ha21.213337.93359.13
101-200 stems/ha26.811296.33323.03
201-300 stems/ha22.812230.34253.23
301-400 stems/ha13.716129.05142.75
401-500 stems/ha7.72161.9769.67
501- 600 stems/ha3.23325.91229.111
more than 600 stems/ha2.83519.61322.412
total98.261100.911199.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 07.11.2014 #162000/148379
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