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NFI1

forest area: avalanches SilvaProtect, modelled and assigned · production region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned %± %± %± %± %± %±
inside perimeter11.61.70.90.711.30.930.81.012.30.919.60.5
outside perimeter88.41.799.10.788.70.969.21.087.70.980.40.5
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 #169647/156030

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
stand stability
criticalless stablestabletotal
cantondegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
AI< 1%....0.31000.3100
1-4%....0.31000.3100
5-9%....0.31000.3100
10-25%........
26-50%........
51-75%........
76-100%........
total....1.0541.054
AR< 1%........
1-4%........
5-9%....0.31000.3100
10-25%........
26-50%........
51-75%........
76-100%........
total....0.31000.3100
BE< 1%....0.7710.771
1-4%..1.0581.4502.438
5-9%0.31002.7351.0584.129
10-25%..2.4382.4384.826
26-50%0.31000.31001.4502.141
51-75%....0.31000.3100
76-100%........
total0.7716.5237.22214.415
BL/BS< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
FR< 1%........
1-4%........
5-9%..0.4100..0.4100
10-25%........
26-50%..0.41000.41000.770
51-75%........
76-100%........
total..0.7700.41001.157
GE< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
GL< 1%..0.41000.41000.870
1-4%..0.41000.41000.870
5-9%..0.4100..0.4100
10-25%0.41000.41000.41001.257
26-50%....0.8700.870
51-75%........
76-100%....0.41000.4100
total0.41001.5492.3394.228
GR< 1%..0.31000.31000.771
1-4%0.31001.4502.5384.229
5-9%..1.4501.4502.835
10-25%..2.4384.9267.321
26-50%0.31001.4502.4384.229
51-75%0.31000.31001.4502.141
76-100%0.3100....0.3100
total1.4507.32112.91621.612
JU< 1%........
1-4%........
5-9%........
10-25%....0.41000.4100
26-50%..0.4100..0.4100
51-75%........
76-100%........
total..0.41000.41000.870
LU< 1%........
1-4%....0.31000.3100
5-9%........
10-25%....0.31000.3100
26-50%........
51-75%........
76-100%........
total....0.6700.670
NE< 1%........
1-4%........
5-9%........
10-25%........
26-50%....0.6700.670
51-75%....0.31000.3100
76-100%........
total....1.0571.057
NW< 1%........
1-4%........
5-9%0.4100....0.4100
10-25%........
26-50%..0.4100..0.4100
51-75%........
76-100%....0.41000.4100
total0.41000.41000.41001.255
OW< 1%........
1-4%..0.4100..0.4100
5-9%..0.4100..0.4100
10-25%..0.770..0.770
26-50%........
51-75%0.4100....0.4100
76-100%........
total0.41001.549..1.943
SG< 1%........
1-4%........
5-9%....0.7700.770
10-25%..0.7700.7701.450
26-50%....0.41000.4100
51-75%....1.1571.157
76-100%........
total..0.7702.9353.631
SH< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
SO< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
SZ< 1%........
1-4%........
5-9%....0.41000.4100
10-25%....0.7700.770
26-50%..0.4100..0.4100
51-75%..0.41000.41000.770
76-100%........
total..0.7701.4492.240
TG< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
TI< 1%........
1-4%0.41000.41000.7711.450
5-9%0.4100..1.8442.141
10-25%..0.7711.8442.537
26-50%..1.1581.4502.538
51-75%..0.41000.41000.771
76-100%....0.41000.4100
total0.7712.5386.4239.719
UR< 1%........
1-4%..0.31000.31000.770
5-9%..0.770..0.770
10-25%..1.057..1.057
26-50%0.31000.3100..0.770
51-75%....0.31000.3100
76-100%........
total0.31002.3360.7703.330
VD< 1%....0.41000.4100
1-4%0.4100....0.4100
5-9%..0.8710.41001.158
10-25%..1.158..1.158
26-50%..0.871..0.871
51-75%........
76-100%..0.4100..0.4100
total0.41003.0350.8714.230
VS< 1%..0.3100..0.3100
1-4%0.31000.7711.4502.437
5-9%0.7713.1334.1287.920
10-25%..4.1285.5259.618
26-50%0.31001.4501.7443.431
51-75%..0.7710.31001.058
76-100%..0.3100..0.3100
total1.45010.61713.01525.011
ZG< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
ZH< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Switzerland< 1%..1.1582.1413.233
1-4%1.4504.6287.32213.216
5-9%1.8459.71910.51822.012
10-25%0.410013.71617.11431.110
26-50%1.4506.8239.12017.314
51-75%0.7711.8454.5287.022
76-100%0.31000.7711.1582.241
total6.02438.3951.7896.16

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #169648/156031

NFI1

forest area: avalanches SilvaProtect, modelled and assigned · production region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter4.1160.27112.9969.1415.38101.63
outside perimeter31.1520.97100.63155.42109.02417.11
total35.2521.17113.52224.52124.32518.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169649/156032

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %±
critical< 1%............
1-4%......1.60.92.62.51.50.7
5-9%....2.82.71.60.92.62.51.80.8
10-25%......0.50.5..0.40.4
26-50%......2.11.1..1.40.7
51-75%....2.82.70.50.5..0.70.5
76-100%......0.50.5..0.40.4
total....5.63.87.01.95.13.56.21.5
less stable< 1%......1.60.9..1.10.6
1-4%....8.34.64.31.55.13.54.81.3
5-9%....13.95.811.32.35.13.510.21.8
10-25%7.77.4..11.15.216.72.77.74.314.22.1
26-50%7.77.4..8.34.66.41.87.84.37.01.5
51-75%......2.11.12.62.51.80.8
76-100%......1.10.8..0.70.5
total15.410.0..41.78.243.63.628.27.239.73.0
stable< 1%23.111.7..2.82.71.10.8..2.20.9
1-4%15.410.0..5.63.87.51.97.84.37.71.6
5-9%7.67.3..8.34.610.72.315.45.810.91.9
10-25%15.410.0..16.66.217.22.823.06.717.92.3
26-50%15.410.0..11.15.28.62.110.24.99.51.8
51-75%7.77.4..5.63.83.81.47.74.34.81.3
76-100%....2.82.70.50.52.62.51.10.6
total84.610.0..52.88.349.43.766.67.654.13.0
total< 1%23.111.7..2.82.72.71.2..3.31.1
1-4%15.410.0..13.95.813.42.515.55.813.92.1
5-9%7.67.3..25.07.223.73.123.06.723.02.5
10-25%23.111.7..27.87.534.43.530.77.432.42.8
26-50%23.111.7..19.46.617.22.818.06.217.92.3
51-75%7.77.4..8.34.66.41.810.24.97.31.6
76-100%....2.82.72.11.12.62.52.20.9
total100.0...100.0.100.0.100.0.100.0.

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169650/156033

NFI1

forest area: avalanches SilvaProtect, modelled and assigned · protection forest region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter7.51.119.31.220.51.534.11.725.41.612.30.919.60.5
outside perimeter92.51.180.71.279.51.565.91.774.61.687.70.980.40.5
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 #169651/156034

NFI1

forest area: avalanches SilvaProtect, modelled and assigned · protection forest region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter4.21521.6715.3825.4619.6715.38101.53
outside perimeter51.9490.2359.3349.2457.54109.02417.11
total56.14111.9274.6374.7377.03124.32518.61

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169652/156035

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
critical< 1%............
1-4%......1.0580.41001.450
5-9%....0.41001.1580.41001.845
10-25%......0.3100..0.3100
26-50%......1.450..1.450
51-75%....0.41000.3100..0.771
76-100%......0.3100..0.3100
total....0.7714.5280.7715.924
less stable< 1%......1.058..1.058
1-4%....1.1582.8350.7714.628
5-9%....1.8457.3220.7719.819
10-25%0.4100..1.45010.7181.15813.616
26-50%0.4100..1.1584.1291.1586.723
51-75%......1.4500.41001.745
76-100%......0.771..0.771
total0.771..5.42628.0113.93038.19
stable< 1%1.158..0.41000.771..2.141
1-4%0.771..0.7714.8271.1587.422
5-9%0.4100..1.1586.9222.14110.518
10-25%0.771..2.24111.1173.23317.114
26-50%0.771..1.4505.5251.4509.120
51-75%0.4100..0.7712.4381.1584.628
76-100%....0.41000.31000.41001.158
total4.030..6.82331.8109.21951.98
total< 1%1.158..0.41001.745..3.233
1-4%0.771..1.8458.6202.14113.316
5-9%0.4100..3.23315.2153.23322.012
10-25%1.158..3.63122.1124.32931.110
26-50%1.158..2.53811.1172.53817.214
51-75%0.4100..1.1584.1291.4507.022
76-100%....0.41001.4500.41002.141
total4.727..13.01664.3713.81595.96

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169653/156036

NFI1

forest area: avalanches SilvaProtect, modelled and assigned · economic region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region %± %± %±
Western Jura13.42.086.62.0100.0.
Eastern Jura..100.0.100.0.
Western Plateau..100.0.100.0.
Central Plateau1.91.498.11.4100.0.
Eastern Plateau..100.0.100.0.
Western Pre-Alps17.22.382.82.3100.0.
Central Pre-Alps11.01.489.01.4100.0.
Eastern Pre-Alps7.41.492.61.4100.0.
Northwestern Alps32.32.567.72.5100.0.
Central Alps40.54.059.54.0100.0.
Northeastern Alps29.03.171.03.1100.0.
Southwestern Alps34.11.765.91.7100.0.
Southeastern Alps25.41.674.61.6100.0.
Southern Alps12.30.987.70.9100.0.
Switzerland19.60.580.40.5100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #169654/156037

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %± %±
critical< 1%..............
1-4%..1.71.7..1.41.42.02.02.62.51.50.7
5-9%..3.42.4..2.82.0..2.62.51.90.8
10-25%....2.42.4......0.40.4
26-50%..1.71.72.42.41.41.42.02.0..1.50.7
51-75%..1.71.7....2.02.0..0.70.5
76-100%........2.02.0..0.40.4
total..8.63.74.93.45.62.78.03.85.13.56.21.5
less stable< 1%....2.42.41.41.42.02.0..1.10.6
1-4%..6.93.34.93.42.71.96.03.45.13.54.81.3
5-9%..20.75.37.44.112.33.84.02.85.13.510.31.8
10-25%7.77.419.05.214.65.516.44.312.04.67.74.314.22.1
26-50%7.77.48.63.74.93.45.52.78.03.87.84.37.01.5
51-75%....2.42.42.71.92.02.02.62.51.80.8
76-100%..1.71.7..1.41.4....0.70.5
total15.410.056.96.536.77.542.45.834.06.728.27.239.83.0
stable< 1%23.111.7..4.93.4..2.02.0..2.20.9
1-4%15.410.05.22.97.34.15.52.712.04.67.84.37.71.6
5-9%7.87.55.22.912.25.116.44.36.03.415.45.810.91.9
10-25%15.410.012.14.312.25.121.94.820.05.723.06.717.82.3
26-50%15.410.08.63.77.34.16.83.014.04.910.24.99.51.8
51-75%7.77.41.71.712.25.11.41.44.02.87.74.34.71.3
76-100%..1.71.72.42.4....2.62.51.10.6
total84.610.034.56.258.57.752.05.858.07.066.67.653.93.0
total< 1%23.111.7..7.34.11.41.44.02.8..3.31.1
1-4%15.410.013.84.512.25.19.63.420.05.715.55.813.92.1
5-9%7.87.529.36.019.66.231.65.410.04.223.06.723.02.5
10-25%23.111.731.06.129.27.138.35.732.06.630.77.432.42.8
26-50%23.111.719.05.214.65.513.74.024.06.018.06.217.92.3
51-75%7.77.43.42.414.65.54.12.38.03.810.24.97.31.6
76-100%..3.42.42.42.41.41.42.02.02.62.52.20.9
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 #169655/156038

NFI1

forest area: avalanches SilvaProtect, modelled and assigned · economic region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region1000 ha± %1000 ha± %1000 ha± %
Western Jura4.11626.1630.25
Eastern Jura..5.0145.014
Western Plateau..5.1145.114
Central Plateau0.27110.0910.29
Eastern Plateau..5.7135.713
Western Pre-Alps4.71422.8527.64
Central Pre-Alps5.31342.7448.04
Eastern Pre-Alps2.81935.1437.94
Northwestern Alps11.7924.6536.34
Central Alps6.4129.3915.76
Northeastern Alps6.21215.3721.55
Southwestern Alps25.4649.2474.73
Southeastern Alps19.6757.5477.03
Southern Alps15.38109.02124.32
Switzerland101.83417.41519.11

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169656/156039

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · biogeographical region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter9.81.61.10.66.70.610.01.16.31.08.70.87.50.4
outside perimeter90.21.698.90.693.30.690.01.193.71.091.30.892.50.4
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 #169657/156040

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
critical< 1%..............
1-4%..0.4100..0.31000.41000.41001.450
5-9%..0.771..0.771..0.41001.845
10-25%....0.3100......0.3100
26-50%..0.41000.31000.31000.4100..1.450
51-75%..0.4100....0.4100..0.771
76-100%........0.4100..0.4100
total..1.8450.7711.4501.4500.7716.024
less stable< 1%....0.31000.31000.4100..1.058
1-4%..1.4500.7710.7711.1580.7714.628
5-9%..4.3291.1583.1330.7710.7719.919
10-25%0.41004.0302.1414.1282.1411.15813.716
26-50%0.41001.8450.7711.4501.4501.1586.723
51-75%....0.31000.7710.41000.41001.745
76-100%..0.4100..0.3100....0.771
total0.77111.9175.22510.6176.0243.93038.39
stable< 1%1.158..0.771..0.4100..2.141
1-4%0.7711.1581.0581.4502.1411.1587.422
5-9%0.41001.1581.7444.1281.1582.14110.518
10-25%0.7712.5381.7445.5253.5313.23317.214
26-50%0.7711.8451.0581.7442.5381.4509.120
51-75%0.41000.41001.7440.31000.7711.1584.628
76-100%..0.41000.3100....0.41001.158
total3.9307.2228.32013.01510.2189.21951.98
total< 1%1.158..1.0580.31000.771..3.233
1-4%0.7712.9351.7442.4373.5312.14113.416
5-9%0.41006.1242.8357.9201.8453.23322.112
10-25%1.1586.5234.1289.6185.6254.32931.210
26-50%1.1584.0302.1413.4314.2282.53817.214
51-75%0.41000.7712.1411.0581.4501.4507.022
76-100%..0.7710.31000.31000.41000.41002.141
total4.72820.91314.21525.01117.61313.81596.26

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169658/156041

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · biogeographical region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter3.6170.35813.496.6123.91611.1938.85
outside perimeter32.8527.96186.7259.8357.83115.62480.61
total36.3528.26200.1266.5361.63126.72519.41

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169659/156042

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
critical< 1%..............................
1-4%................3.33.3....1.41.42.02.02.62.51.50.7
5-9%............5.35.1..3.33.3....2.82.0..2.62.51.80.8
10-25%....................5.65.4......0.40.4
26-50%................3.33.36.76.5..1.41.42.02.0..1.40.7
51-75%............5.35.1..........2.02.0..0.70.5
76-100%........................2.02.0..0.40.4
total............10.57.1..10.05.56.76.55.65.45.62.78.03.85.13.56.21.5
less stable< 1%....................5.65.41.41.42.02.0..1.10.6
1-4%............15.88.4..3.33.36.76.55.65.42.71.96.03.45.13.54.81.3
5-9%..........22.314.015.88.4..23.37.713.38.85.65.412.33.84.02.85.13.510.21.8
10-25%7.77.4........11.210.615.88.4..23.37.720.010.416.78.816.44.312.04.67.74.314.22.1
26-50%7.77.4........22.314.05.35.1..6.74.613.38.8..5.52.78.03.87.84.37.01.5
51-75%..................6.76.5..2.71.92.02.02.62.51.80.8
76-100%................3.33.3....1.41.4....0.70.5
total15.310.0........55.916.652.611.5..60.08.960.012.733.411.242.45.834.06.728.27.239.82.9
stable< 1%23.011.7............12.511.7....5.65.4..2.02.0..2.20.9
1-4%15.310.0..........5.35.112.511.76.74.66.76.55.65.45.52.712.04.67.84.37.71.6
5-9%8.07.6..........5.35.125.015.36.74.66.76.511.17.416.44.36.03.415.45.810.91.9
10-25%15.310.0........33.015.710.57.112.511.76.74.66.76.516.78.821.94.820.05.723.06.717.82.3
26-50%15.310.0........11.210.610.57.112.511.76.74.6..11.17.46.83.014.04.910.24.99.51.8
51-75%7.77.4............25.015.33.33.313.38.85.65.41.41.44.02.87.74.34.81.3
76-100%............5.35.1......5.65.4....2.62.51.10.6
total84.710.0........44.116.636.811.1100.0.30.08.433.312.261.111.552.05.858.07.066.67.654.03.0
total< 1%23.011.7............12.511.7....11.17.41.41.44.02.8..3.31.1
1-4%15.310.0..........21.19.412.511.713.36.213.38.811.17.49.63.420.05.715.55.813.92.1
5-9%8.07.6........22.314.026.310.125.015.333.38.620.010.416.78.831.65.410.04.223.06.723.02.5
10-25%23.011.7........44.116.626.310.112.511.730.08.426.711.538.911.538.35.732.06.630.77.432.42.8
26-50%23.011.7........33.515.815.88.412.511.716.76.820.010.411.17.413.74.024.06.018.06.217.92.3
51-75%7.77.4..........5.35.125.015.33.33.320.010.45.65.44.12.38.03.810.24.97.31.6
76-100%............5.35.1..3.33.3..5.65.41.41.42.02.02.62.52.20.9
total100.0.........100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #169660/156043

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · canton
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton %± %± %±
AG..100.0.100.0.
AI..100.0.100.0.
AR..100.0.100.0.
BE5.10.894.90.8100.0.
BL/BS11.85.588.25.1100.0.
FR1.81.098.21.0100.0.
GE......
GL19.04.081.04.0100.0.
GR7.20.892.80.8100.0.
JU9.42.890.62.6100.0.
LU2.81.997.21.9100.0.
NE7.34.192.73.6100.0.
NW9.54.690.54.6100.0.
OW5.32.394.72.3100.0.
SG5.41.294.61.2100.0.
SH16.715.383.315.3100.0.
SO11.85.588.25.5100.0.
SZ9.42.590.62.5100.0.
TG..100.0.100.0.
TI8.10.891.90.8100.0.
UR30.74.669.34.6100.0.
VD3.71.396.31.3100.0.
VS9.21.090.81.0100.0.
ZG..100.0.100.0.
ZH..100.0.100.0.
Switzerland7.50.492.50.4100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #169661/156044

NFI3

forest area: stand stability · degree of cover of regeneration (7 classes) · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
stand stability
criticalless stablestabletotal
economic regiondegree of cover of regeneration (7 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura< 1%....1.1581.158
1-4%....0.7710.771
5-9%....0.41000.4100
10-25%..0.41000.7711.158
26-50%..0.41000.7711.158
51-75%....0.41000.4100
76-100%........
total..0.7713.9304.627
Eastern Jura< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Western Plateau< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Central Plateau< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Eastern Plateau< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Western Pre-Alps< 1%........
1-4%........
5-9%..0.770..0.770
10-25%..0.41001.1581.550
26-50%..0.7700.41001.157
51-75%........
76-100%........
total..1.9441.5503.333
Central Pre-Alps< 1%........
1-4%..1.1580.41001.450
5-9%0.41001.1580.41001.844
10-25%..1.1580.7711.844
26-50%..0.41000.7711.158
51-75%0.4100....0.4100
76-100%....0.41000.4100
total0.7713.6312.5376.822
Eastern Pre-Alps< 1%....0.41000.4100
1-4%....0.41000.4100
5-9%....0.7710.771
10-25%....0.41000.4100
26-50%....0.41000.4100
51-75%....0.7710.771
76-100%........
total....2.9352.935
Northwestern Alps< 1%........
1-4%0.41000.41000.7711.450
5-9%0.41002.5370.7713.631
10-25%..2.5370.7713.233
26-50%0.41000.7710.7711.844
51-75%....0.41000.4100
76-100%..0.4100..0.4100
total1.1576.4233.23310.717
Central Alps< 1%........
1-4%..0.31000.31000.770
5-9%..0.7700.31001.057
10-25%..1.0570.31001.449
26-50%0.31000.770..1.057
51-75%..0.31000.7701.057
76-100%........
total0.31003.1321.7445.224
Northeastern Alps< 1%..0.41000.41000.770
1-4%..0.41000.41000.770
5-9%..0.41000.7701.158
10-25%0.41001.1571.1572.537
26-50%....0.7700.770
51-75%....0.41000.4100
76-100%....0.41000.4100
total0.41002.2403.9296.422
Southwestern Alps< 1%..0.3100..0.3100
1-4%0.31000.7711.4502.437
5-9%0.7713.1334.1287.920
10-25%..4.1285.5259.618
26-50%0.31001.4501.7443.431
51-75%..0.7710.31001.058
76-100%..0.3100..0.3100
total1.45010.61713.01525.011
Southeastern Alps< 1%..0.41000.41000.771
1-4%0.41001.1582.1413.531
5-9%..0.7711.1581.845
10-25%..2.1413.5315.625
26-50%0.41001.4502.5384.228
51-75%0.41000.41000.7711.450
76-100%0.4100....0.4100
total1.4506.02410.21817.613
Southern Alps< 1%........
1-4%0.41000.7711.1582.141
5-9%0.41000.7712.1413.233
10-25%..1.1583.2334.329
26-50%..1.1581.4502.538
51-75%..0.41001.1581.450
76-100%....0.41000.4100
total0.7713.9309.21913.815
Switzerland< 1%..1.1582.1413.233
1-4%1.4504.6287.42213.416
5-9%1.8459.91910.51822.112
10-25%0.410013.71617.21431.210
26-50%1.4506.7239.22017.314
51-75%0.7711.7454.6287.022
76-100%0.41000.7711.1582.141
total6.02438.3952.1896.46

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169662/156045

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · canton
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton1000 ha± %1000 ha± %1000 ha± %
AG..1.6251.625
AI..2.9152.915
AR..3.1153.115
BE4.11575.6379.73
BL/BS0.4503.2173.616
FR0.35816.5716.86
GE......
GL1.8237.9109.78
GR7.21292.3399.52
JU1.0319.6910.68
LU0.2716.8117.011
NE0.3583.8154.115
NW0.4494.1134.512
OW0.5449.189.68
SG1.82331.6433.44
SH0.11000.5440.640
SO0.4503.0183.416
SZ1.42713.3714.77
TG..2.6182.618
TI8.21193.82102.02
UR3.1177.11010.28
VD0.83521.4622.36
VS6.81267.8374.73
ZG..2.5162.516
ZH..0.9330.933
Switzerland38.95480.91519.91

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #169663/156046

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · production region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %±
inside perimeter10.11.61.40.82.20.49.60.68.70.87.50.4
outside perimeter89.91.698.60.897.80.490.40.691.30.892.50.4
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 #169664/156047

NFI3

forest area: stand stability · degree of cover of assured regeneration · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of assured regeneration %± %± %± %± %± %± %±
criticalless than 1%....0.90.91.61.5....0.70.5
1-4%....1.81.31.51.52.42.42.42.41.80.8
5-9%......1.51.5..2.42.40.70.5
10-25%....3.61.8..2.42.4..1.80.8
26-50%......1.51.52.42.42.42.41.10.6
51-75%..............
76-100%..............
total....6.42.36.02.97.14.07.34.16.21.5
less stableless than 1%....2.71.61.51.54.83.3..2.20.9
1-4%7.77.4..11.83.15.92.94.83.39.74.68.81.7
5-9%....12.73.210.33.77.14.04.93.49.51.8
10-25%7.77.4..14.53.416.24.59.54.59.84.713.12.0
26-50%....6.42.35.92.92.42.44.93.45.11.3
51-75%....0.90.92.92.0....1.10.6
76-100%..............
total15.410.0..49.14.842.66.028.67.029.37.139.73.0
stableless than 1%23.011.7..3.61.8..7.14.02.42.44.11.2
1-4%23.211.7..8.22.67.33.214.35.49.84.79.91.8
5-9%....10.02.916.24.52.42.419.56.211.31.9
10-25%23.011.7..10.02.925.05.326.26.812.25.117.12.3
26-50%15.410.0..8.22.61.51.514.35.414.65.58.81.7
51-75%....4.52.01.51.5..2.42.42.61.0
76-100%..........2.42.40.40.4
total84.610.0..44.54.751.46.164.37.463.47.554.03.0
totalless than 1%23.011.7..7.32.53.02.111.95.02.42.47.01.5
1-4%30.912.8..21.83.914.74.321.46.322.06.520.52.4
5-9%....22.74.027.95.49.54.526.86.921.52.5
10-25%30.712.8..28.24.341.16.038.17.522.06.532.02.8
26-50%15.410.0..14.53.48.83.419.06.121.96.515.02.2
51-75%....5.52.24.42.5..2.42.43.61.1
76-100%..........2.42.40.40.4
total100.0...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 #169665/156048

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · production region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter3.6170.3582.52021.5710.9938.75
outside perimeter31.7520.87111.02203.02113.42479.91
total35.2521.17113.52224.52124.32518.61

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169666/156049

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · protection forest region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter6.81.14.10.610.91.19.21.05.80.88.70.87.50.4
outside perimeter93.21.195.90.689.11.190.81.094.20.891.30.892.50.4
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 #169667/156050

NFI3

forest area: stand stability · degree of cover of assured regeneration · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of assured regeneration1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
criticalless than 1%....0.41000.4100....0.771
1-4%....0.7710.31000.41000.41001.845
5-9%......0.3100..0.41000.771
10-25%....1.450..0.4100..1.845
26-50%......0.31000.41000.41001.158
51-75%..............
76-100%..............
total....2.5381.4501.1581.1586.024
less stableless than 1%....1.1580.31000.771..2.141
1-4%0.4100..4.6281.4500.7711.4508.520
5-9%....5.0272.4371.1580.7719.120
10-25%0.4100..5.7253.8301.4501.45012.617
26-50%....2.5381.4500.41000.7714.927
51-75%....0.41000.771....1.058
76-100%..............
total0.771..19.2139.9184.2284.32938.39
stableless than 1%1.158..1.450..1.1580.41003.930
1-4%1.158..3.2331.7442.1411.4509.519
5-9%....3.9303.8300.41002.83510.918
10-25%1.158..3.9305.8243.9301.84516.514
26-50%0.771..3.2330.31002.1412.1418.520
51-75%....1.8450.3100..0.41002.538
76-100%..........0.41000.4100
total4.030..17.41412.0169.5199.31952.18
totalless than 1%1.158..2.8350.7711.8440.41006.723
1-4%1.450..8.5203.4313.2333.23319.813
5-9%....8.9206.5221.4503.93020.713
10-25%1.450..11.0189.6185.7243.23330.910
26-50%0.771..5.7252.1412.8353.23314.515
51-75%....2.1411.058..0.41003.532
76-100%..........0.41000.4100
total4.727..39.0923.31114.81514.61596.46

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169668/156051

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · protection forest region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter3.8164.6158.1116.8124.51510.9938.75
outside perimeter52.34107.2266.5367.8372.63113.42479.91
total56.14111.9274.6374.7377.03124.32518.61

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #169669/156052

NFI1

forest area: rockfall SilvaProtect, modelled and assigned · economic region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI1
state 1983/85
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region %± %± %±
Western Jura10.41.889.61.8100.0.
Eastern Jura8.34.091.73.7100.0.
Western Plateau2.01.998.01.9100.0.
Central Plateau1.91.398.11.3100.0.
Eastern Plateau..100.0.100.0.
Western Pre-Alps1.40.798.60.7100.0.
Central Pre-Alps2.90.897.10.8100.0.
Eastern Pre-Alps1.90.798.10.7100.0.
Northwestern Alps7.91.492.11.4100.0.
Central Alps26.83.673.23.6100.0.
Northeastern Alps15.22.484.82.4100.0.
Southwestern Alps9.21.090.81.0100.0.
Southeastern Alps5.80.894.20.8100.0.
Southern Alps8.70.891.30.8100.0.
Switzerland7.50.492.50.4100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #169670/156053
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