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NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand structure %± %± %±
AGn/a..0.80.80.80.8
single-layered..31.14.231.14.2
multi-layered..62.34.462.34.4
stratified..5.72.15.72.1
clustered structure......
total..100.0.100.0.
AIn/a..7.67.56.26.1
single-layered100.0.53.014.161.712.3
multi-layered..31.913.326.011.3
stratified..7.67.56.26.1
clustered structure......
total100.0.100.0.100.0.
ARn/a......
single-layered100.0.66.79.768.09.3
multi-layered..29.29.528.09.2
stratified..4.24.24.04.0
clustered structure......
total100.0.100.0.100.0.
BEn/a7.14.01.50.62.00.6
single-layered42.97.635.82.336.42.2
multi-layered33.27.347.22.346.02.2
stratified11.95.014.81.714.61.6
clustered structure4.93.40.70.41.00.5
total100.0.100.0.100.0.
BL/BSn/a......
single-layered..23.66.023.66.0
multi-layered..74.46.274.46.2
stratified..2.02.02.02.0
clustered structure......
total..100.0.100.0.
FRn/a33.327.31.81.32.61.5
single-layered33.327.332.44.532.44.4
multi-layered..61.34.659.74.6
stratified33.327.33.61.84.41.9
clustered structure..0.90.90.90.9
total100.0.100.0.100.0.
GEn/a..14.814.614.814.6
single-layered..14.814.614.814.6
multi-layered..70.518.770.518.7
stratified......
clustered structure......
total..100.0.100.0.
GLn/a......
single-layered27.513.638.28.435.67.2
multi-layered45.815.144.18.644.57.5
stratified17.511.317.66.617.65.7
clustered structure9.28.8..2.22.2
total100.0.100.0.100.0.
GRn/a3.22.23.10.83.10.8
single-layered32.35.937.32.436.62.2
multi-layered45.16.334.92.336.22.2
stratified16.14.720.82.020.21.8
clustered structure3.22.24.01.03.90.9
total100.0.100.0.100.0.
JUn/a......
single-layered..30.65.029.94.9
multi-layered50.035.560.05.359.75.3
stratified50.035.59.43.210.43.3
clustered structure......
total100.0.100.0.100.0.
LUn/a..0.80.80.80.8
single-layered100.0.40.84.441.74.4
multi-layered..47.94.547.24.4
stratified..9.72.79.62.6
clustered structure..0.80.80.80.8
total100.0.100.0.100.0.
NEn/a......
single-layered..18.54.317.94.2
multi-layered66.727.349.75.550.35.4
stratified33.327.430.65.030.74.9
clustered structure..1.21.21.11.1
total100.0.100.0.100.0.
NWn/a......
single-layered..35.311.830.010.5
multi-layered66.727.747.112.350.011.4
stratified33.327.811.88.015.08.2
clustered structure..5.95.85.05.0
total100.0.100.0.100.0.
OWn/a..4.22.93.82.6
single-layered60.022.137.07.239.36.9
multi-layered20.018.134.87.133.46.7
stratified20.018.121.86.121.65.8
clustered structure..2.22.22.02.0
total100.0.100.0.100.0.
SGn/a..1.41.01.30.9
single-layered40.015.532.84.033.33.9
multi-layered60.015.555.84.256.04.1
stratified..10.02.59.32.4
clustered structure......
total100.0.100.0.100.0.
SHn/a......
single-layered..44.48.344.48.3
multi-layered..55.68.355.68.3
stratified......
clustered structure......
total..100.0.100.0.
SOn/a......
single-layered..21.44.521.44.5
multi-layered..73.84.873.84.8
stratified..4.82.34.82.3
clustered structure......
total..100.0.100.0.
SZn/a..4.22.43.82.2
single-layered33.319.338.95.838.45.5
multi-layered66.719.345.85.947.45.7
stratified..11.13.710.33.5
clustered structure......
total100.0.100.0.100.0.
TGn/a......
single-layered..25.35.225.35.2
multi-layered..69.15.569.15.5
stratified..5.62.75.62.7
clustered structure......
total..100.0.100.0.
TIn/a..0.70.50.60.4
single-layered40.79.536.02.836.42.7
multi-layered40.89.552.52.951.52.8
stratified18.57.510.21.710.91.7
clustered structure..0.70.50.60.4
total100.0.100.0.100.0.
URn/a......
single-layered40.015.627.26.829.66.3
multi-layered40.015.652.27.650.06.9
stratified20.012.720.56.120.45.5
clustered structure......
total100.0.100.0.100.0.
VDn/a..1.20.71.20.7
single-layered36.414.537.23.137.13.0
multi-layered54.515.050.93.251.03.1
stratified9.18.710.01.99.91.9
clustered structure..0.80.60.80.5
total100.0.100.0.100.0.
VSn/a2.82.02.41.02.50.9
single-layered42.45.843.33.243.12.8
multi-layered31.55.431.83.031.72.6
stratified23.34.922.02.722.32.3
clustered structure..0.40.40.30.3
total100.0.100.0.100.0.
ZGn/a..7.17.17.17.1
single-layered..28.612.528.612.5
multi-layered..50.013.850.013.8
stratified..14.39.714.39.7
clustered structure......
total..100.0.100.0.
ZHn/a......
single-layered..26.23.726.23.7
multi-layered..66.23.966.23.9
stratified..7.62.27.62.2
clustered structure......
total..100.0.100.0.
Switzerlandn/a2.91.01.50.21.60.2
single-layered38.82.934.80.935.10.8
multi-layered39.33.049.70.948.90.9
stratified17.12.313.00.613.30.6
clustered structure1.90.81.00.21.10.2
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164783/151165

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonstand structure1000 ha± %1000 ha± %1000 ha± %
AGn/a..0.41000.4100
single-layered..15.31415.314
multi-layered..30.6730.67
stratified..2.8372.837
clustered structure......
total..49.1249.12
AIn/a..0.31000.3100
single-layered1.0542.3303.221
multi-layered..1.4481.448
stratified..0.31000.3100
clustered structure......
total1.0544.3185.212
ARn/a......
single-layered0.31005.1165.514
multi-layered..2.2332.233
stratified..0.31000.3100
clustered structure......
total0.31007.768.05
BEn/a1.0582.4383.431
single-layered6.22355.5761.76
multi-layered4.82673.2578.05
stratified1.74523.01224.711
clustered structure0.7711.0581.745
total14.415155.12169.52
BL/BSn/a......
single-layered..4.9264.926
multi-layered..15.41015.410
stratified..0.41000.4100
clustered structure......
total..20.7520.75
FRn/a0.41000.7701.157
single-layered0.410013.41413.814
multi-layered..25.4825.48
stratified0.41001.5491.944
clustered structure..0.41000.4100
total1.15741.5342.63
GEn/a..0.51000.5100
single-layered..0.51000.5100
multi-layered..2.2342.234
stratified......
clustered structure......
total..3.1203.120
GLn/a......
single-layered1.2575.0246.221
multi-layered1.9435.8227.718
stratified0.7712.3393.034
clustered structure0.4100..0.4100
total4.22813.11117.37
GRn/a0.7714.5275.225
single-layered7.02254.8761.86
multi-layered9.81851.3761.06
stratified3.53130.51034.09
clustered structure0.7715.9246.623
total21.612147.03168.62
JUn/a......
single-layered..10.11710.117
multi-layered0.410019.81020.29
stratified0.41003.1343.532
clustered structure......
total0.87033.1333.93
LUn/a..0.31000.3100
single-layered0.67016.11116.711
multi-layered..18.91018.910
stratified..3.8283.828
clustered structure..0.31000.3100
total0.67039.4340.03
NEn/a......
single-layered..5.0255.025
multi-layered0.67013.51214.211
stratified0.31008.3178.616
clustered structure..0.31000.3100
total1.05727.2528.24
NWn/a......
single-layered..2.3362.336
multi-layered0.8693.1293.824
stratified0.41000.8691.255
clustered structure..0.41000.4100
total1.2556.5137.78
OWn/a..0.7710.771
single-layered1.1576.4207.518
multi-layered0.41006.0216.420
stratified0.41003.7294.127
clustered structure..0.41000.4100
total1.94317.2619.04
SGn/a..0.7710.771
single-layered1.45016.61318.112
multi-layered2.24028.2930.48
stratified..5.1265.126
clustered structure......
total3.63150.6554.24
SHn/a......
single-layered..5.7195.719
multi-layered..7.1157.115
stratified......
clustered structure......
total..12.8312.83
SOn/a......
single-layered..6.8216.821
multi-layered..23.5723.57
stratified..1.5491.549
clustered structure......
total..31.8331.83
SZn/a..1.1571.157
single-layered0.77010.11610.915
multi-layered1.44912.01413.413
stratified..2.9342.934
clustered structure......
total2.24026.1628.35
TGn/a......
single-layered..5.4215.421
multi-layered..14.7914.79
stratified..1.2491.249
clustered structure......
total..21.3321.33
TIn/a..0.7710.771
single-layered3.93038.8842.88
multi-layered4.03056.7660.66
stratified1.84411.11712.816
clustered structure..0.7710.771
total9.719108.03117.72
URn/a......
single-layered1.3494.0275.323
multi-layered1.3497.7189.016
stratified0.7703.0323.729
clustered structure......
total3.33014.71118.09
VDn/a..1.1581.158
single-layered1.55035.2936.78
multi-layered2.34048.2750.46
stratified0.41009.4199.819
clustered structure..0.8710.871
total4.23094.7398.92
VSn/a0.7712.1412.835
single-layered10.61736.4847.07
multi-layered7.92026.81034.69
stratified5.82418.51324.411
clustered structure..0.31000.3100
total25.01184.14109.13
ZGn/a..0.41000.4100
single-layered..1.7441.744
multi-layered..3.0283.028
stratified..0.9680.968
clustered structure......
total..6.066.06
ZHn/a......
single-layered..13.41413.414
multi-layered..33.9633.96
stratified..3.9293.929
clustered structure......
total..51.1251.12
Switzerlandn/a2.83516.01518.814
single-layered37.39370.83408.12
multi-layered37.79530.42568.12
stratified16.414138.45154.84
clustered structure1.84510.51812.317
total96.161066.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164784/151166

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand structure %± %± %± %± %± %±
inside perimetern/a....5.63.83.31.3..2.91.0
single-layered30.812.8..44.48.337.63.643.67.939.12.9
multi-layered46.213.8..30.67.740.33.638.57.839.02.9
stratified15.410.0..16.76.217.22.817.96.117.22.3
clustered structure7.67.3..2.82.71.60.9..1.80.8
total100.0...100.0.100.0.100.0.100.0.
outside perimetern/a0.60.30.90.42.00.62.30.51.30.61.50.2
single-layered30.32.033.11.836.62.037.41.635.82.534.80.9
multi-layered58.92.159.81.946.22.137.51.650.82.649.60.9
stratified10.11.36.00.914.41.520.71.410.91.613.10.6
clustered structure0.20.20.20.20.90.42.20.51.10.51.00.2
total100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.50.30.90.42.20.62.50.51.20.51.60.2
single-layered30.42.033.11.837.12.037.41.536.62.435.20.8
multi-layered58.62.159.81.945.22.038.01.549.62.548.70.9
stratified10.21.36.00.914.51.420.11.211.61.613.50.6
clustered structure0.40.30.20.21.00.42.10.41.00.51.10.2
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164785/151167

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand structure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a....0.7712.141..2.835
single-layered1.550..5.82524.2126.02437.49
multi-layered2.241..4.03025.9115.32537.49
stratified0.771..2.24111.1172.53816.414
clustered structure0.4100..0.41001.058..1.845
total4.727..13.01664.3713.81595.96
outside perimetern/a1.1582.1414.0306.9221.84515.915
single-layered59.5775.9674.26113.0547.37369.93
multi-layered115.44137.1393.75113.4567.06526.52
stratified19.71313.71629.21062.5714.415139.55
clustered structure0.41000.41001.8456.6231.45010.618
total196.01229.11202.92302.42131.931062.41
totaln/a1.1582.1414.7289.0191.84518.714
single-layered60.9775.9680.06137.2453.37407.32
multi-layered117.64137.1397.75139.3472.35563.92
stratified20.41313.71631.41073.6616.914156.04
clustered structure0.7710.41002.2417.7211.45012.417
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164786/151168

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand structure %± %± %± %± %± %± %±
inside perimetern/a..6.93.3..2.82.04.02.8..3.01.0
single-layered30.712.841.46.541.47.742.45.828.06.443.67.939.02.9
multi-layered46.113.834.56.246.37.831.55.448.07.138.57.839.02.9
stratified15.410.015.54.89.94.723.34.916.05.217.96.117.12.3
clustered structure7.87.51.71.72.42.4..4.02.8..1.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetern/a0.80.31.60.62.10.82.41.02.90.91.30.61.50.2
single-layered31.91.432.72.138.42.743.33.237.72.635.82.534.80.9
multi-layered59.41.446.52.247.12.731.83.033.12.550.82.649.50.9
stratified7.80.817.61.712.41.822.02.722.12.210.91.613.20.6
clustered structure0.20.11.60.6..0.40.44.21.11.10.51.00.2
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totaln/a0.70.22.10.61.90.72.50.93.00.91.20.51.60.2
single-layered31.91.333.62.038.72.543.12.836.52.436.62.435.20.8
multi-layered59.21.445.32.147.02.631.72.634.92.449.62.548.70.9
stratified7.90.817.31.612.11.722.32.321.42.011.61.613.50.6
clustered structure0.30.11.60.50.30.30.30.34.21.01.00.51.10.2
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, 03.11.2014 #164787/151169

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand structure · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand structure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetern/a..1.450..0.7710.771..2.935
single-layered1.4508.7205.92410.6174.9266.02437.59
multi-layered2.1417.2226.6227.9208.4205.32537.69
stratified0.7713.2331.4505.8242.8352.53816.514
clustered structure0.41000.41000.3100..0.771..1.845
total4.72820.91314.21525.01117.61313.81596.26
outside perimetern/a3.2332.9352.4382.1413.5311.84515.915
single-layered135.6459.9744.4836.4846.4747.37369.83
multi-layered252.5385.1554.4626.81040.7867.06526.52
stratified33.31032.11014.31518.51327.21014.415139.85
clustered structure0.7712.935..0.31005.2261.45010.618
total425.31182.82115.5384.14123.13131.931062.71
totaln/a3.2334.3292.4382.8354.2281.84518.714
single-layered137.0468.5650.2747.0751.3753.37407.42
multi-layered254.7392.3560.9634.6949.2772.35564.12
stratified34.01035.3915.71524.41130.11016.914156.34
clustered structure1.1583.2330.31000.31005.9241.45012.417
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164788/151170

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %± %±
inside perimeterto 19 m2/ha....21.83.917.74.628.67.017.15.920.12.4
20-39 m2/ha46.113.8..32.74.541.16.047.67.751.17.840.53.0
40-59 m2/ha53.913.8..30.94.426.45.419.06.122.06.527.82.7
from 60 m2/ha....14.53.414.74.34.83.39.74.611.61.9
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha24.21.928.71.727.41.547.53.436.82.840.12.531.10.8
20-39 m2/ha48.42.243.31.833.41.632.23.234.62.838.12.539.10.9
40-59 m2/ha23.01.821.61.526.91.516.62.521.72.417.62.022.50.8
from 60 m2/ha4.40.96.30.912.31.13.71.37.01.54.21.07.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha23.61.828.71.726.81.440.42.935.72.637.92.430.20.8
20-39 m2/ha48.32.243.31.833.31.534.42.836.22.739.32.439.20.8
40-59 m2/ha23.81.821.61.527.41.418.92.321.42.318.11.923.00.7
from 60 m2/ha4.30.96.30.912.61.16.31.46.71.44.71.07.70.5
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 #164789/151171

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-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/ha....8.5204.1284.2282.53819.413
20-39 m2/ha2.241..12.8169.6187.1227.52139.19
40-59 m2/ha2.538..12.1176.2232.8353.23326.811
from 60 m2/ha....5.7253.4310.7711.45011.218
total4.727..39.0923.31114.81514.61596.46
outside perimeterto 19 m2/ha45.8873.9683.8635.3837.2954.37330.23
20-39 m2/ha91.55111.44102.2524.01134.9951.57415.52
40-59 m2/ha43.6855.5782.3612.31621.91223.911239.53
from 60 m2/ha8.32016.31437.692.8357.1225.72577.77
total189.22257.11305.9274.34101.13135.431062.91
totalto 19 m2/ha45.8873.9692.3639.4841.4856.87349.63
20-39 m2/ha93.75111.44114.9533.5942.0859.06454.52
40-59 m2/ha46.1855.5794.4518.51324.71127.111266.33
from 60 m2/ha8.32016.31443.396.2237.8217.12288.96
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164790/151172

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonbasal area (standing live trees) %± %± %±
AGto 19 m2/ha..37.74.437.74.4
20-39 m2/ha..46.74.546.74.5
40-59 m2/ha..13.93.113.93.1
from 60 m2/ha..1.61.21.61.2
total..100.0.100.0.
AIto 19 m2/ha..15.110.112.38.4
20-39 m2/ha..7.67.56.26.1
40-59 m2/ha66.727.954.614.156.812.7
from 60 m2/ha33.328.022.711.924.711.0
total100.0.100.0.100.0.
ARto 19 m2/ha..16.77.716.07.5
20-39 m2/ha..16.77.816.07.5
40-59 m2/ha..37.510.036.09.7
from 60 m2/ha100.0.29.29.432.09.5
total100.0.100.0.100.0.
BEto 19 m2/ha31.07.126.92.127.32.0
20-39 m2/ha35.67.439.12.338.82.2
40-59 m2/ha33.47.324.02.024.81.9
from 60 m2/ha..10.01.49.11.3
total100.0.100.0.100.0.
BL/BSto 19 m2/ha..23.66.023.66.0
20-39 m2/ha..57.16.957.16.9
40-59 m2/ha..13.84.913.84.9
from 60 m2/ha..5.53.15.53.1
total..100.0.100.0.
FRto 19 m2/ha33.327.327.94.328.14.2
20-39 m2/ha66.727.328.04.329.04.3
40-59 m2/ha..34.24.533.34.4
from 60 m2/ha..9.92.89.62.8
total100.0.100.0.100.0.
GEto 19 m2/ha..44.320.144.320.1
20-39 m2/ha..44.320.144.320.1
40-59 m2/ha..11.410.311.410.3
from 60 m2/ha......
total..100.0.100.0.
GLto 19 m2/ha18.311.835.38.331.27.0
20-39 m2/ha35.814.532.48.133.27.1
40-59 m2/ha9.28.817.66.615.65.5
from 60 m2/ha36.714.714.76.120.06.0
total100.0.100.0.100.0.
GRto 19 m2/ha19.35.035.42.333.42.1
20-39 m2/ha51.66.335.12.337.22.2
40-59 m2/ha24.25.523.12.123.21.9
from 60 m2/ha4.82.76.41.26.21.1
total100.0.100.0.100.0.
JUto 19 m2/ha..23.64.623.04.5
20-39 m2/ha50.035.545.95.446.05.4
40-59 m2/ha50.035.522.34.522.94.5
from 60 m2/ha..8.23.08.12.9
total100.0.100.0.100.0.
LUto 19 m2/ha..20.73.620.43.6
20-39 m2/ha..46.24.545.54.4
40-59 m2/ha50.035.521.03.721.53.7
from 60 m2/ha50.035.512.12.912.73.0
total100.0.100.0.100.0.
NEto 19 m2/ha..26.54.925.64.7
20-39 m2/ha66.727.342.75.443.55.3
40-59 m2/ha33.327.428.55.028.74.9
from 60 m2/ha..2.41.72.31.6
total100.0.100.0.100.0.
NWto 19 m2/ha..23.510.520.09.1
20-39 m2/ha66.727.723.510.530.010.5
40-59 m2/ha33.327.847.112.345.011.3
from 60 m2/ha..5.95.85.05.0
total100.0.100.0.100.0.
OWto 19 m2/ha..36.87.233.26.6
20-39 m2/ha40.022.124.06.425.56.2
40-59 m2/ha60.022.128.36.731.46.5
from 60 m2/ha..10.94.69.84.2
total100.0.100.0.100.0.
SGto 19 m2/ha30.014.517.13.218.03.1
20-39 m2/ha20.012.735.74.134.73.9
40-59 m2/ha30.014.529.33.929.33.7
from 60 m2/ha20.012.717.93.218.03.1
total100.0.100.0.100.0.
SHto 19 m2/ha..13.95.813.95.8
20-39 m2/ha..58.38.258.38.2
40-59 m2/ha..27.87.527.87.5
from 60 m2/ha......
total..100.0.100.0.
SOto 19 m2/ha..25.04.825.04.8
20-39 m2/ha..53.65.553.65.5
40-59 m2/ha..19.04.319.04.3
from 60 m2/ha..2.41.72.41.7
total..100.0.100.0.
SZto 19 m2/ha16.715.325.05.124.44.9
20-39 m2/ha16.715.334.75.633.35.4
40-59 m2/ha50.020.533.35.634.65.4
from 60 m2/ha16.715.37.03.07.73.0
total100.0.100.0.100.0.
TGto 19 m2/ha..30.95.530.95.5
20-39 m2/ha..39.35.839.35.8
40-59 m2/ha..24.25.124.25.1
from 60 m2/ha..5.62.75.62.7
total..100.0.100.0.
TIto 19 m2/ha26.08.541.42.840.12.7
20-39 m2/ha48.19.639.02.839.82.7
40-59 m2/ha14.86.815.62.115.52.0
from 60 m2/ha11.16.04.01.14.61.2
total100.0.100.0.100.0.
URto 19 m2/ha20.012.729.87.028.06.2
20-39 m2/ha20.012.741.07.537.26.6
40-59 m2/ha40.015.618.05.822.05.6
from 60 m2/ha20.012.711.24.812.84.6
total100.0.100.0.100.0.
VDto 19 m2/ha18.211.627.22.826.82.7
20-39 m2/ha27.313.445.23.244.43.1
40-59 m2/ha27.313.420.82.621.12.5
from 60 m2/ha27.313.46.81.67.71.6
total100.0.100.0.100.0.
VSto 19 m2/ha16.54.446.53.239.62.7
20-39 m2/ha41.15.831.83.033.92.7
40-59 m2/ha27.45.217.12.419.52.2
from 60 m2/ha15.14.24.51.36.91.4
total100.0.100.0.100.0.
ZGto 19 m2/ha..35.713.235.713.2
20-39 m2/ha..42.913.742.913.7
40-59 m2/ha..14.39.714.39.7
from 60 m2/ha..7.17.17.17.1
total..100.0.100.0.
ZHto 19 m2/ha..31.73.931.73.9
20-39 m2/ha..41.44.141.44.1
40-59 m2/ha..24.13.624.13.6
from 60 m2/ha..2.81.42.81.4
total..100.0.100.0.
Switzerlandto 19 m2/ha20.12.431.10.830.20.8
20-39 m2/ha40.53.039.20.939.30.9
40-59 m2/ha27.62.722.50.822.90.7
from 60 m2/ha11.71.97.20.57.60.5
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164791/151173

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
cantonbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
AGto 19 m2/ha..18.51218.512
20-39 m2/ha..22.91022.910
40-59 m2/ha..6.8236.823
from 60 m2/ha..0.8700.870
total..49.1249.12
AIto 19 m2/ha..0.6690.669
20-39 m2/ha..0.31000.3100
40-59 m2/ha0.6692.3333.027
from 60 m2/ha0.31001.0541.345
total1.0544.3185.212
ARto 19 m2/ha..1.3471.347
20-39 m2/ha..1.3471.347
40-59 m2/ha..2.9272.927
from 60 m2/ha0.31002.2332.630
total0.31007.768.05
BEto 19 m2/ha4.52741.8846.28
20-39 m2/ha5.12560.6665.76
40-59 m2/ha4.82637.3942.18
from 60 m2/ha..15.51415.514
total14.415155.12169.52
BL/BSto 19 m2/ha..4.9264.926
20-39 m2/ha..11.81311.813
40-59 m2/ha..2.9362.936
from 60 m2/ha..1.1581.158
total..20.7520.75
FRto 19 m2/ha0.410011.61611.915
20-39 m2/ha0.77011.61612.315
40-59 m2/ha..14.21414.214
from 60 m2/ha..4.1294.129
total1.15741.5342.63
GEto 19 m2/ha..1.4481.448
20-39 m2/ha..1.4481.448
40-59 m2/ha..0.41000.4100
from 60 m2/ha......
total..3.1203.120
GLto 19 m2/ha0.8704.6265.423
20-39 m2/ha1.5494.2275.723
40-59 m2/ha0.41002.3392.736
from 60 m2/ha1.5491.9433.531
total4.22813.11117.37
GRto 19 m2/ha4.22952.1756.37
20-39 m2/ha11.21751.6762.86
40-59 m2/ha5.22633.9939.18
from 60 m2/ha1.0589.41910.518
total21.612147.03168.62
JUto 19 m2/ha..7.8207.820
20-39 m2/ha0.410015.21215.612
40-59 m2/ha0.41007.4217.820
from 60 m2/ha..2.7362.736
total0.87033.1333.93
LUto 19 m2/ha..8.2188.218
20-39 m2/ha..18.21018.210
40-59 m2/ha0.31008.3188.618
from 60 m2/ha0.31004.8255.124
total0.67039.4340.03
NEto 19 m2/ha..7.2197.219
20-39 m2/ha0.67011.61312.213
40-59 m2/ha0.31007.8188.118
from 60 m2/ha..0.6700.670
total1.05727.2528.24
NWto 19 m2/ha..1.5461.546
20-39 m2/ha0.8691.5462.336
40-59 m2/ha0.41003.1293.526
from 60 m2/ha..0.41000.4100
total1.2556.5137.78
OWto 19 m2/ha..6.3216.321
20-39 m2/ha0.7704.1274.924
40-59 m2/ha1.1574.9246.021
from 60 m2/ha..1.9431.943
total1.94317.2619.04
SGto 19 m2/ha1.1578.7199.718
20-39 m2/ha0.77018.11218.812
40-59 m2/ha1.15714.81415.913
from 60 m2/ha0.7709.0199.818
total3.63150.6554.24
SHto 19 m2/ha..1.8421.842
20-39 m2/ha..7.5147.514
40-59 m2/ha..3.6273.627
from 60 m2/ha......
total..12.8312.83
SOto 19 m2/ha..7.9197.919
20-39 m2/ha..17.01117.011
40-59 m2/ha..6.1236.123
from 60 m2/ha..0.8700.870
total..31.8331.83
SZto 19 m2/ha0.41006.5226.921
20-39 m2/ha0.41009.1179.417
40-59 m2/ha1.1578.7179.816
from 60 m2/ha0.41001.8442.240
total2.24026.1628.35
TGto 19 m2/ha..6.6186.618
20-39 m2/ha..8.4158.415
40-59 m2/ha..5.2225.222
from 60 m2/ha..1.2491.249
total..21.3321.33
TIto 19 m2/ha2.53844.7847.27
20-39 m2/ha4.72742.2846.87
40-59 m2/ha1.45016.81418.313
from 60 m2/ha1.1584.3285.425
total9.719108.03117.72
URto 19 m2/ha0.7704.4265.024
20-39 m2/ha0.7706.0216.720
40-59 m2/ha1.3492.6344.027
from 60 m2/ha0.7701.7432.336
total3.33014.71118.09
VDto 19 m2/ha0.87125.71126.511
20-39 m2/ha1.15842.8743.97
40-59 m2/ha1.15819.71320.912
from 60 m2/ha1.1586.4247.622
total4.23094.7398.92
VSto 19 m2/ha4.12939.1843.37
20-39 m2/ha10.31826.81037.08
40-59 m2/ha6.92214.41521.312
from 60 m2/ha3.8303.8307.621
total25.01184.14109.13
ZGto 19 m2/ha..2.1372.137
20-39 m2/ha..2.6322.632
40-59 m2/ha..0.9680.968
from 60 m2/ha..0.41000.4100
total..6.066.06
ZHto 19 m2/ha..16.21216.212
20-39 m2/ha..21.21021.210
40-59 m2/ha..12.31512.315
from 60 m2/ha..1.4491.449
total..51.1251.12
Switzerlandto 19 m2/ha19.313331.53350.93
20-39 m2/ha38.99417.92456.82
40-59 m2/ha26.511239.43265.93
from 60 m2/ha11.31877.3788.56
total96.161066.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164792/151174

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %±
inside perimeterto 19 m2/ha....22.26.921.53.018.06.220.02.4
20-39 m2/ha46.213.8..30.67.740.33.648.68.040.53.0
40-59 m2/ha53.813.8..33.37.925.83.223.16.827.82.7
from 60 m2/ha....13.95.812.42.410.24.911.61.9
total100.0...100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha23.51.831.31.822.61.837.51.639.92.531.00.8
20-39 m2/ha51.22.240.51.933.22.034.61.638.32.539.10.9
40-59 m2/ha21.41.822.21.630.21.920.61.417.52.022.50.8
from 60 m2/ha3.90.86.00.914.01.57.30.94.31.17.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha22.91.831.31.822.51.734.71.537.82.430.10.8
20-39 m2/ha51.12.140.51.933.11.935.61.539.32.439.20.8
40-59 m2/ha22.21.822.21.630.41.921.51.318.01.923.00.7
from 60 m2/ha3.80.86.00.914.01.48.20.84.91.17.70.5
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164793/151175

NFI4b

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 NFI3/NFI4 combined
grid:
state 2009/13
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/ha....2.93513.8162.53819.213
20-39 m2/ha2.241..4.03025.9116.72238.89
40-59 m2/ha2.638..4.32916.6143.23326.711
from 60 m2/ha....1.8457.9211.45011.218
total4.727..13.01664.3713.81595.96
outside perimeterto 19 m2/ha46.0871.7645.88113.5552.77329.63
20-39 m2/ha100.4492.8567.46104.5550.57415.62
40-59 m2/ha42.0851.0761.3762.3723.012239.53
from 60 m2/ha7.72113.71628.51122.2125.72577.77
total196.01229.11202.92302.42131.931062.41
totalto 19 m2/ha46.0871.7648.78127.3555.17348.83
20-39 m2/ha102.6492.8571.46130.4457.36454.42
40-59 m2/ha44.5851.0765.6678.9626.211266.23
from 60 m2/ha7.72113.71630.31030.1107.12288.96
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164794/151176

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedbasal area (standing live trees) %± %± %± %± %± %± %±
inside perimeterto 19 m2/ha..27.65.919.56.216.54.424.06.018.06.220.12.4
20-39 m2/ha46.113.836.26.322.06.541.15.852.07.148.68.040.53.0
40-59 m2/ha53.913.829.36.031.77.327.45.220.05.723.16.827.82.7
from 60 m2/ha..6.93.326.86.915.14.24.02.810.24.911.61.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimeterto 19 m2/ha27.81.326.82.023.72.346.53.235.82.639.92.531.10.8
20-39 m2/ha45.31.435.12.132.92.631.83.035.12.538.32.539.10.9
40-59 m2/ha21.91.226.42.028.42.517.12.422.62.217.52.022.50.8
from 60 m2/ha5.00.611.61.415.02.04.51.36.61.34.31.17.30.5
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalto 19 m2/ha27.51.326.91.923.32.239.62.734.32.437.82.430.20.8
20-39 m2/ha45.31.435.22.031.72.433.92.737.22.439.32.439.20.9
40-59 m2/ha22.21.226.71.928.82.319.52.222.32.118.01.923.00.7
from 60 m2/ha5.00.611.21.316.31.96.91.46.21.24.91.17.70.5
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, 03.11.2014 #164795/151177

NFI4b

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 NFI3/NFI4 combined
grid:
state 2009/13
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/ha..5.8252.8354.1294.2282.53819.413
20-39 m2/ha2.1417.6213.13310.3189.1196.72239.09
40-59 m2/ha2.5386.1244.5276.9223.5313.23326.711
from 60 m2/ha..1.4503.8303.8300.7711.45011.118
total4.72820.91314.21525.01117.61313.81596.26
outside perimeterto 19 m2/ha118.0549.0827.41139.1844.0852.77330.33
20-39 m2/ha192.8364.2638.0826.81043.2850.57415.52
40-59 m2/ha93.0648.3832.8914.41527.81023.012239.33
from 60 m2/ha21.51321.31317.3133.8308.1205.72577.67
total425.31182.82115.5384.14123.13131.931062.71
totalto 19 m2/ha118.0554.8730.21043.3748.2755.17349.63
20-39 m2/ha195.0371.8641.1837.0852.3757.36454.52
40-59 m2/ha95.5554.5737.3821.31231.31026.211266.03
from 60 m2/ha21.51322.71221.1127.6218.8197.12288.76
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164796/151178

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · basal area (standing live trees) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees) %± %± %±
Western Jurato 19 m2/ha..23.42.122.72.0
20-39 m2/ha46.013.849.92.549.82.4
40-59 m2/ha54.013.822.42.023.42.0
from 60 m2/ha..4.31.04.21.0
total100.0.100.0.100.0.
Eastern Jurato 19 m2/ha..23.83.923.83.9
20-39 m2/ha..55.84.555.84.5
40-59 m2/ha..18.13.518.13.5
from 60 m2/ha..2.31.32.31.3
total..100.0.100.0.
Western Plateauto 19 m2/ha..28.04.228.04.2
20-39 m2/ha..38.14.538.14.5
40-59 m2/ha..24.64.024.64.0
from 60 m2/ha..9.42.79.42.7
total..100.0.100.0.
Central Plateauto 19 m2/ha..31.23.131.23.1
20-39 m2/ha..41.53.341.53.3
40-59 m2/ha..19.92.719.92.7
from 60 m2/ha..7.31.87.31.8
total..100.0.100.0.
Eastern Plateauto 19 m2/ha..32.62.732.62.7
20-39 m2/ha..40.62.840.62.8
40-59 m2/ha..23.02.423.02.4
from 60 m2/ha..3.81.13.81.1
total..100.0.100.0.
Western Pre-Alpsto 19 m2/ha55.316.625.94.228.14.1
20-39 m2/ha22.314.028.64.328.14.1
40-59 m2/ha..32.24.429.84.2
from 60 m2/ha22.314.013.33.214.03.2
total100.0.100.0.100.0.
Central Pre-Alpsto 19 m2/ha15.88.424.92.724.32.6
20-39 m2/ha36.811.136.83.036.82.9
40-59 m2/ha42.111.327.32.828.32.7
from 60 m2/ha5.35.111.12.010.71.9
total100.0.100.0.100.0.
Eastern Pre-Alpsto 19 m2/ha..17.72.717.02.6
20-39 m2/ha25.015.331.33.331.13.2
40-59 m2/ha50.017.732.83.333.53.3
from 60 m2/ha25.015.318.22.718.42.7
total100.0.100.0.100.0.
Northwestern Alpsto 19 m2/ha26.78.131.03.930.23.5
20-39 m2/ha40.09.037.34.137.83.7
40-59 m2/ha30.08.420.43.422.13.2
from 60 m2/ha3.33.311.32.79.92.3
total100.0.100.0.100.0.
Central Alpsto 19 m2/ha20.010.428.95.727.25.1
20-39 m2/ha20.010.436.56.133.35.4
40-59 m2/ha40.012.723.65.326.85.0
from 60 m2/ha20.010.411.03.912.73.8
total100.0.100.0.100.0.
Northeastern Alpsto 19 m2/ha27.810.633.85.632.65.0
20-39 m2/ha22.39.835.25.732.65.0
40-59 m2/ha16.78.821.14.920.24.3
from 60 m2/ha33.311.19.93.514.63.8
total100.0.100.0.100.0.
Southwestern Alpsto 19 m2/ha16.54.446.53.239.62.7
20-39 m2/ha41.15.831.83.033.92.7
40-59 m2/ha27.45.217.12.419.52.2
from 60 m2/ha15.14.24.51.36.91.4
total100.0.100.0.100.0.
Southeastern Alpsto 19 m2/ha24.06.035.82.634.32.4
20-39 m2/ha52.07.135.12.537.22.4
40-59 m2/ha20.05.722.62.222.32.1
from 60 m2/ha4.02.86.61.36.21.2
total100.0.100.0.100.0.
Southern Alpsto 19 m2/ha18.06.239.92.537.82.4
20-39 m2/ha48.68.038.32.539.32.4
40-59 m2/ha23.16.817.52.018.01.9
from 60 m2/ha10.24.94.31.14.91.1
total100.0.100.0.100.0.
Switzerlandto 19 m2/ha20.22.431.00.830.10.8
20-39 m2/ha40.53.039.10.939.20.8
40-59 m2/ha27.72.722.60.823.00.7
from 60 m2/ha11.71.97.30.57.70.5
total100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164797/151179

NFI4b

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 NFI3/NFI4 combined
grid:
state 2009/13
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic regionbasal area (standing live trees)1000 ha± %1000 ha± %1000 ha± %
Western Jurato 19 m2/ha..34.6934.69
20-39 m2/ha2.14173.9576.15
40-59 m2/ha2.53833.2935.79
from 60 m2/ha..6.4236.423
total4.627148.22152.82
Eastern Jurato 19 m2/ha..11.51611.516
20-39 m2/ha..26.9826.98
40-59 m2/ha..8.7198.719
from 60 m2/ha..1.1581.158
total..48.2248.22
Western Plateauto 19 m2/ha..13.51513.515
20-39 m2/ha..18.41218.412
40-59 m2/ha..11.91711.917
from 60 m2/ha..4.5294.529
total..48.4348.43
Central Plateauto 19 m2/ha..21.51021.510
20-39 m2/ha..28.5828.58
40-59 m2/ha..13.71413.714
from 60 m2/ha..5.0245.024
total..68.7268.72
Eastern Plateauto 19 m2/ha..36.5836.58
20-39 m2/ha..45.4745.47
40-59 m2/ha..25.71025.710
from 60 m2/ha..4.3284.328
total..111.92111.92
Western Pre-Alpsto 19 m2/ha1.84410.71712.615
20-39 m2/ha0.77011.81612.615
40-59 m2/ha..13.31413.314
from 60 m2/ha0.7705.5256.323
total3.33341.4444.84
Central Pre-Alpsto 19 m2/ha1.15822.61123.711
20-39 m2/ha2.53733.3935.98
40-59 m2/ha2.93524.71127.610
from 60 m2/ha0.410010.01810.418
total6.82290.7397.52
Eastern Pre-Alpsto 19 m2/ha..12.51612.516
20-39 m2/ha0.77122.11122.911
40-59 m2/ha1.45023.21124.610
from 60 m2/ha0.77112.91613.615
total2.93570.7373.63
Northwestern Alpsto 19 m2/ha2.93515.71418.612
20-39 m2/ha4.32818.91223.210
40-59 m2/ha3.23310.41713.615
from 60 m2/ha0.41005.7246.124
total10.71750.8561.54
Central Alpsto 19 m2/ha1.0576.3227.320
20-39 m2/ha1.0578.0199.018
40-59 m2/ha2.1405.2247.220
from 60 m2/ha1.0572.4373.430
total5.22421.8927.07
Northeastern Alpsto 19 m2/ha1.8448.61910.416
20-39 m2/ha1.4508.91810.416
40-59 m2/ha1.1575.4246.422
from 60 m2/ha2.1402.5374.726
total6.42225.4831.96
Southwestern Alpsto 19 m2/ha4.12939.1843.37
20-39 m2/ha10.31826.81037.08
40-59 m2/ha6.92214.41521.312
from 60 m2/ha3.8303.8307.621
total25.01184.14109.13
Southeastern Alpsto 19 m2/ha4.22844.0848.27
20-39 m2/ha9.11943.2852.37
40-59 m2/ha3.53127.81031.310
from 60 m2/ha0.7718.1208.819
total17.613123.13140.62
Southern Alpsto 19 m2/ha2.53852.7755.17
20-39 m2/ha6.72250.5757.36
40-59 m2/ha3.23323.01226.211
from 60 m2/ha1.4505.7257.122
total13.815131.93145.72
Switzerlandto 19 m2/ha19.413329.83349.23
20-39 m2/ha39.09416.82455.82
40-59 m2/ha26.711240.63267.43
from 60 m2/ha11.21778.0789.26
total96.461065.311161.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164798/151180

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical....5.52.213.24.114.35.44.93.48.31.7
less stable23.011.7..50.94.847.06.140.57.643.97.845.93.0
stable77.011.7..43.64.739.85.945.27.751.27.845.73.0
total100.0...100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.10.62.50.67.40.913.82.36.91.57.01.35.60.4
less stable32.22.037.71.847.01.740.53.335.22.849.72.640.90.9
stable65.72.159.81.845.71.745.73.457.92.943.32.553.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.00.62.50.67.10.813.72.07.91.56.81.25.80.4
less stable32.02.037.71.847.41.642.12.935.92.649.12.441.30.9
stable66.02.059.81.845.41.644.32.956.32.744.12.452.90.9
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, 03.11.2014 #164799/151181

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
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 perimetercritical....2.1413.1332.1410.7718.021
less stable1.158..19.91310.9176.0246.42344.39
stable3.631..17.0149.3196.7227.52144.19
total4.727..39.0923.31114.81514.61596.46
outside perimetercritical4.0306.42322.51210.3177.0229.51959.67
less stable60.9796.95143.7430.1935.6967.26434.42
stable124.34153.83139.7433.9958.5658.76568.92
total189.22257.11305.9274.34101.13135.431062.91
totalcritical4.0306.42324.71213.3159.11910.21867.67
less stable62.0696.95163.6441.0741.6873.65478.72
stable127.93153.83156.7443.2765.2566.16613.02
total193.81257.11344.9197.63115.92150.021159.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164800/151182

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches 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 stable33.328.030.313.030.811.8
stable66.727.969.713.069.211.8
total100.0.100.0.100.0.
ARcritical..4.24.24.04.0
less stable100.0.37.510.140.010.0
stable..58.310.156.010.0
total100.0.100.0.100.0.
BEcritical4.73.35.11.05.01.0
less stable50.07.742.42.343.02.2
stable45.37.752.62.351.92.2
total100.0.100.0.100.0.
BL/BScritical......
less stable..37.46.837.46.8
stable..62.66.862.66.8
total..100.0.100.0.
FRcritical..4.52.04.41.9
less stable33.327.347.74.847.34.7
stable66.727.347.84.848.34.7
total100.0.100.0.100.0.
GEcritical......
less stable..29.518.729.518.7
stable..70.518.770.518.7
total..100.0.100.0.
GLcritical..14.76.111.14.7
less stable45.815.152.98.651.27.5
stable54.215.232.48.137.77.3
total100.0.100.0.100.0.
GRcritical9.73.86.41.26.81.1
less stable43.56.337.02.437.92.2
stable46.86.356.62.455.42.3
total100.0.100.0.100.0.
JUcritical..4.72.34.62.3
less stable50.035.536.45.236.75.2
stable50.035.558.95.458.75.3
total100.0.100.0.100.0.
LUcritical..8.82.58.62.5
less stable100.0.39.24.440.14.4
stable..52.14.551.34.5
total100.0.100.0.100.0.
NEcritical......
less stable..32.15.131.05.0
stable100.0.67.95.169.05.0
total100.0.100.0.100.0.
NWcritical..5.95.85.05.0
less stable33.327.870.611.265.010.8
stable66.727.723.510.530.010.5
total100.0.100.0.100.0.
OWcritical20.018.14.43.05.93.3
less stable80.018.045.77.449.17.0
stable..49.97.445.07.0
total100.0.100.0.100.0.
SGcritical..3.61.63.31.5
less stable60.015.550.74.251.34.1
stable40.015.545.74.245.34.1
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 stable..36.95.336.95.3
stable..61.95.361.95.3
total..100.0.100.0.
SZcritical16.715.38.33.39.03.3
less stable50.020.541.75.842.35.6
stable33.319.350.05.948.75.7
total100.0.100.0.100.0.
TGcritical..2.82.02.82.0
less stable..41.15.941.15.9
stable..56.15.956.15.9
total..100.0.100.0.
TIcritical7.45.07.21.57.21.4
less stable37.19.352.72.951.42.8
stable55.59.640.12.841.42.7
total100.0.100.0.100.0.
URcritical10.09.511.54.911.34.4
less stable50.015.945.87.646.66.8
stable40.015.642.67.542.26.7
total100.0.100.0.100.0.
VDcritical..4.41.34.21.2
less stable45.515.032.53.033.02.9
stable54.515.063.13.162.83.0
total100.0.100.0.100.0.
VScritical13.74.012.62.112.91.9
less stable45.25.840.83.141.82.8
stable41.15.846.63.245.32.8
total100.0.100.0.100.0.
ZGcritical......
less stable..35.713.235.713.2
stable..64.313.364.313.3
total..100.0.100.0.
ZHcritical..4.11.74.11.7
less stable..35.24.035.24.0
stable..60.74.160.74.1
total..100.0.100.0.
Switzerlandcritical8.31.75.50.45.80.4
less stable46.03.040.90.941.30.9
stable45.73.053.60.952.90.9
total100.0.100.0.100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164801/151183

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
avalanches 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 stable0.31001.3451.639
stable0.6693.0273.622
total1.0544.3185.212
ARcritical..0.31000.3100
less stable0.31002.9283.225
stable..4.5184.518
total0.31007.768.05
BEcritical0.7717.9208.520
less stable7.22165.7672.95
stable6.52381.5588.05
total14.415155.12169.52
BL/BScritical......
less stable..7.7197.719
stable..13.01213.012
total..20.7520.75
FRcritical..1.9441.944
less stable0.410019.81120.210
stable0.77019.81020.510
total1.15741.5342.63
GEcritical......
less stable..0.9650.965
stable..2.2342.234
total..3.1203.120
GLcritical..1.9431.943
less stable1.9436.9208.916
stable2.3404.2276.521
total4.22813.11117.37
GRcritical2.1419.41911.417
less stable9.41954.4763.86
stable10.11883.2593.44
total21.612147.03168.62
JUcritical..1.6491.649
less stable0.410012.01512.415
stable0.410019.51019.99
total0.87033.1333.93
LUcritical..3.5293.529
less stable0.67015.41216.111
stable..20.5920.59
total0.67039.4340.03
NEcritical......
less stable..8.7178.717
stable1.05718.5919.49
total1.05727.2528.24
NWcritical..0.41000.4100
less stable0.41004.6205.019
stable0.8691.5462.336
total1.2556.5137.78
OWcritical0.41000.7701.157
less stable1.5497.8179.315
stable..8.6168.616
total1.94317.2619.04
SGcritical..1.8441.844
less stable2.24025.7927.89
stable1.45023.11024.610
total3.63150.6554.24
SHcritical..0.41000.4100
less stable..3.2293.229
stable..9.3119.311
total..12.8312.83
SOcritical..0.41000.4100
less stable..11.71511.715
stable..19.7919.79
total..31.8331.83
SZcritical0.41002.2402.536
less stable1.15710.91511.914
stable0.77013.01313.813
total2.24026.1628.35
TGcritical..0.6700.670
less stable..8.7158.715
stable..11.91111.911
total..21.3321.33
TIcritical0.7717.8218.520
less stable3.63156.9660.56
stable5.42543.3848.77
total9.719108.03117.72
URcritical0.31001.7442.040
less stable1.7446.7208.417
stable1.3496.3207.617
total3.33014.71118.09
VDcritical..4.2304.230
less stable1.94430.7932.69
stable2.34059.8662.15
total4.23094.7398.92
VScritical3.43110.61714.115
less stable11.31734.3945.67
stable10.31839.2849.57
total25.01184.14109.13
ZGcritical......
less stable..2.1372.137
stable..3.9213.921
total..6.066.06
ZHcritical..2.1402.140
less stable..18.01218.012
stable..31.0731.07
total..51.1251.12
Switzerlandcritical8.02159.2867.27
less stable44.29435.82480.02
stable43.99571.12615.02
total96.161066.111162.11

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #164802/151184

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %±
inside perimetercritical....2.82.710.72.35.13.58.31.7
less stable23.111.7..61.18.145.73.741.07.946.03.0
stable76.911.7..36.18.043.63.653.88.045.73.0
total100.0...100.0.100.0.100.0.100.0.
outside perimetercritical2.20.62.50.67.11.18.71.06.61.35.60.4
less stable31.82.037.71.944.82.142.31.750.22.640.80.9
stable65.92.059.81.948.12.148.91.743.22.653.60.9
total100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.20.62.50.66.81.09.10.96.51.25.80.4
less stable31.62.037.71.945.72.042.91.549.32.541.30.9
stable66.22.059.81.947.42.048.01.544.22.452.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164803/151185

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimetercritical....0.41006.9220.7718.021
less stable1.158..7.92129.4105.72544.19
stable3.631..4.72728.0117.52143.89
total4.727..13.01664.3713.81595.96
outside perimetercritical4.4295.62514.41526.4118.72059.58
less stable62.4686.4590.85128.0466.16433.92
stable129.23137.1397.75148.0457.07569.02
total196.01229.11202.92302.42131.931062.41
totalcritical4.4295.62514.81533.3109.51967.57
less stable63.5686.4598.75157.4471.85477.92
stable132.93137.13102.35176.1364.46612.82
total200.81229.11215.92366.71145.721158.21

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164804/151186

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assignedstand stability %± %± %± %± %± %± %±
inside perimetercritical..5.22.94.93.413.74.012.04.65.13.58.31.7
less stable23.111.755.26.551.27.845.25.842.07.041.07.946.03.0
stable76.911.739.76.444.07.841.15.846.07.153.88.045.73.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
outside perimetercritical2.40.47.51.27.01.412.62.16.81.36.61.35.60.4
less stable35.11.448.12.245.02.740.83.136.52.650.22.640.90.9
stable62.61.444.42.248.02.746.63.256.72.643.22.653.50.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalcritical2.30.47.31.16.81.312.91.97.41.36.51.25.80.4
less stable34.91.448.82.145.62.641.82.837.22.449.32.541.30.9
stable62.71.443.92.147.62.645.32.855.42.544.22.452.90.9
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, 03.11.2014 #164805/151187

NFI4b

forest area: avalanches SilvaProtect, modelled and assigned · stand stability · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
grid:
state 2009/13
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 perimetercritical..1.1580.7713.4312.1410.7718.021
less stable1.15811.5177.22111.3177.4215.72544.29
stable3.6328.3206.22310.3188.1207.52143.99
total4.72820.91314.21525.01117.61313.81596.26
outside perimetercritical10.01913.7168.12010.6178.4208.72059.58
less stable149.2488.0551.9734.3944.9866.16434.52
stable266.1281.1555.5639.2869.8557.07568.72
total425.31182.82115.5384.14123.13131.931062.71
totalcritical10.01914.8158.82014.11510.5189.51967.67
less stable150.2499.5559.2645.6752.3771.85478.72
stable269.7289.4561.7649.5777.9564.46612.62
total430.01203.82129.72109.13140.62145.721158.91

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #164806/151188
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