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NFI4b

forest area: stand stability · regeneration cover · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2009/13
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZHSwitzerland
stand stabilityregeneration cover %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
critical< 1%................4.82.7..........................1.41.4....1.40.7
1-9%......2.42.3........1.61.6........20.018.1..........7.45.010.09.5..6.83.0....4.01.2
10-25%......2.42.3........1.61.6..........................2.71.9....1.40.7
26-50%................1.61.6................16.715.3........1.41.4....1.10.6
51-75%....................................................
76-100%............................................1.41.4....0.40.4
total......4.73.3........9.73.8........20.018.1......16.715.3..7.45.010.09.5..13.74.0....8.31.7
less stable< 1%..33.328.0100.0.2.42.3......9.28.83.22.2..........10.09.5..........10.09.59.18.74.12.3....4.31.2
1-9%......19.06.0..33.327.3..9.28.819.35.0..50.035.5....60.022.120.012.7....16.715.3..14.86.8..27.313.421.94.8....19.02.4
10-25%......23.96.6......18.311.812.94.3..50.035.5..33.327.8..10.09.5....33.319.3..11.16.020.012.79.18.713.74.0....14.92.2
26-50%......4.73.3........4.82.7..........20.012.7........7.55.110.09.5..5.52.7....5.11.3
51-75%................3.22.2........20.018.1............10.09.5........1.50.7
76-100%..............9.28.8..50.035.5..................3.73.6..........1.20.7
total..33.328.0100.0.50.07.7..33.327.3..45.815.143.56.350.035.5100.0...33.327.880.018.060.015.5....50.020.5..37.19.350.015.945.515.045.25.8....46.03.0
stable< 1%..33.328.0..2.42.3......9.28.84.82.7..........10.09.5....................2.61.0
1-9%..33.328.0..19.06.0..33.327.3..8.48.014.64.5....................25.98.410.09.59.18.720.64.7....15.92.2
10-25%......14.45.4......27.513.616.14.750.035.5........20.012.7....16.715.3..14.86.820.012.79.18.715.14.2....15.02.2
26-50%......4.73.3..33.327.3..9.28.84.82.7......33.327.8............14.86.8..18.211.65.52.7....6.71.5
51-75%......4.73.3........4.82.7....33.327.4..........16.715.3....10.09.5........2.91.0
76-100%................1.61.6....66.727.333.327.8..10.09.5............18.211.6......2.61.0
total..66.727.9..45.37.7..66.727.3..54.215.246.86.350.035.5..100.0.66.727.7..40.015.5....33.319.3..55.59.640.015.654.515.041.15.8....45.73.0
total< 1%..66.727.9100.0.4.73.3......18.311.812.94.3..........20.012.7..........10.09.59.18.75.52.7....8.31.7
1-9%..33.328.0..40.37.6..66.727.3..17.511.335.56.1..50.035.5....80.018.020.012.7....16.715.3..48.19.620.012.736.414.549.45.9....38.92.9
10-25%......40.77.6......45.815.130.65.950.035.550.035.5..33.327.8..30.014.5....50.020.5..25.98.440.015.618.211.631.55.4....31.42.8
26-50%......9.54.5..33.327.3..9.28.811.34.0......33.327.8..20.012.7....16.715.3..22.38.010.09.518.211.612.33.8....12.92.0
51-75%......4.73.3........8.13.5....33.327.4..20.018.1......16.715.3....20.012.7........4.31.2
76-100%..............9.28.81.61.650.035.5..66.727.333.327.8..10.09.5........3.73.6..18.211.61.41.4....4.11.2
total..100.0.100.0.100.0...100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.....100.0...100.0.100.0.100.0.100.0.....100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170199/156582

NFI3

forest area: slope (20% classes) · protection forest region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
slope (20% classes) %± %± %± %± %± %± %±
to 20%9.41.65.50.94.20.90.60.41.70.61.70.53.60.3
21-40 %89.18.290.06.487.87.793.37.493.27.384.55.789.22.9
over 100%1.50.74.50.88.01.36.01.15.21.013.81.37.20.5
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 #170200/156583

NFI4b

forest area: stand stability · regeneration cover · 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 2009/13
stand stability
criticalless stablestabletotal
cantonregeneration cover1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
AI< 1%..0.31000.31000.669
1-9%....0.31000.3100
10-25%........
26-50%........
51-75%........
76-100%........
total..0.31000.6691.054
AR< 1%..0.3100..0.3100
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total..0.3100..0.3100
BE< 1%..0.31000.31000.771
1-9%0.31002.7352.7355.824
10-25%0.31003.4312.1415.924
26-50%..0.7710.7711.450
51-75%....0.7710.771
76-100%........
total0.7717.2216.52314.415
BL/BS< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
FR< 1%........
1-9%..0.41000.41000.770
10-25%........
26-50%....0.41000.4100
51-75%........
76-100%........
total..0.41000.7701.157
GE< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
GL< 1%..0.41000.41000.870
1-9%..0.41000.41000.771
10-25%..0.8701.2571.943
26-50%....0.41000.4100
51-75%........
76-100%..0.4100..0.4100
total..1.9432.3404.228
GR< 1%1.0580.7711.0582.835
1-9%0.31004.2293.2337.721
10-25%0.31002.8353.5316.623
26-50%0.31001.0581.0582.438
51-75%..0.7711.0581.745
76-100%....0.31000.3100
total2.1419.41910.11821.612
JU< 1%........
1-9%........
10-25%....0.41000.4100
26-50%........
51-75%........
76-100%..0.4100..0.4100
total..0.41000.41000.870
LU< 1%........
1-9%..0.3100..0.3100
10-25%..0.3100..0.3100
26-50%........
51-75%........
76-100%........
total..0.670..0.670
NE< 1%........
1-9%........
10-25%........
26-50%........
51-75%....0.31000.3100
76-100%....0.6700.670
total....1.0571.057
NW< 1%........
1-9%........
10-25%..0.4100..0.4100
26-50%....0.41000.4100
51-75%........
76-100%....0.41000.4100
total..0.41000.8691.255
OW< 1%........
1-9%0.41001.157..1.549
10-25%........
26-50%........
51-75%..0.4100..0.4100
76-100%........
total0.41001.549..1.943
SG< 1%..0.41000.41000.770
1-9%..0.770..0.770
10-25%..0.41000.7701.157
26-50%..0.770..0.770
51-75%........
76-100%....0.41000.4100
total..2.2401.4503.631
SH< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
SO< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
SZ< 1%........
1-9%..0.4100..0.4100
10-25%..0.7700.41001.157
26-50%0.4100....0.4100
51-75%....0.41000.4100
76-100%........
total0.41001.1570.7702.240
TG< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
TI< 1%........
1-9%0.7711.4502.5374.727
10-25%..1.1581.4502.537
26-50%..0.7711.4502.241
51-75%........
76-100%..0.4100..0.4100
total0.7713.6315.4259.719
UR< 1%..0.3100..0.3100
1-9%0.3100..0.31000.770
10-25%..0.7700.7701.349
26-50%..0.3100..0.3100
51-75%..0.31000.31000.770
76-100%........
total0.31001.7441.3493.330
VD< 1%..0.4100..0.4100
1-9%..1.1580.41001.550
10-25%..0.41000.41000.871
26-50%....0.8710.871
51-75%........
76-100%....0.8710.871
total..1.9442.3404.230
VS< 1%0.31001.058..1.450
1-9%1.7445.5255.22512.416
10-25%0.7713.4313.8307.920
26-50%0.31001.4501.4503.133
51-75%........
76-100%0.3100....0.3100
total3.43111.31710.31825.011
ZG< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
ZH< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Switzerland< 1%1.4504.2292.5388.021
1-9%3.83018.31415.31537.49
10-25%1.45014.31614.41630.111
26-50%1.1584.9276.42412.417
51-75%..1.4502.7354.129
76-100%0.31001.1582.5384.030
total8.02144.2943.9996.16

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170201/156584

NFI3

forest area: slope (20% classes) · protection forest region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
slope (20% classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
to 20%5.6186.5163.3230.5581.4352.32819.69
21-40 %53.264105.93368.74073.84178.440111.532491.515
over 100%0.9455.2186.2164.8194.42018.1939.76
total59.75117.6378.3379.1384.13132.02550.71

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170202/156585

NFI4b

forest area: stand stability · regeneration cover · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
stand stabilityregeneration cover %± %± %± %± %± %±
critical< 1%......2.11.1..1.40.7
1-9%....2.82.74.31.55.13.54.01.2
10-25%......2.11.1..1.40.7
26-50%......1.60.9..1.10.6
51-75%............
76-100%......0.50.5..0.40.4
total....2.82.710.72.35.13.58.31.7
less stable< 1%....5.63.85.41.7..4.41.2
1-9%15.410.0..25.07.218.32.817.96.119.02.4
10-25%....22.26.915.02.612.85.314.92.2
26-50%....5.63.84.81.67.84.35.11.3
51-75%....2.82.71.60.9..1.50.7
76-100%7.77.4....0.50.52.62.51.10.6
total23.111.7..61.18.145.73.741.07.946.03.0
stable< 1%....5.63.82.11.12.62.52.61.0
1-9%23.111.7..8.34.614.62.628.27.216.12.2
10-25%23.011.7..5.63.816.72.712.85.314.92.1
26-50%7.77.4..8.34.65.41.710.24.96.61.5
51-75%7.77.4....3.81.4..2.91.0
76-100%15.410.0..8.34.61.10.8..2.61.0
total76.911.7..36.18.043.63.653.88.045.73.0
total< 1%....11.15.29.72.22.62.58.41.7
1-9%38.513.5..36.18.037.13.551.38.039.12.9
10-25%23.011.7..27.87.533.93.525.67.031.32.8
26-50%7.77.4..13.95.811.82.418.06.212.82.0
51-75%7.77.4..2.82.75.41.7..4.41.2
76-100%23.111.7..8.34.62.11.12.62.54.11.2
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 #170203/156586

NFI3

forest area: slope (20% classes) · economic region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
slope (20% classes)
to 20%21-40 %over 100%total
economic region %± %± %± %±
Western Jura3.91.493.911.42.21.1100.0.
Eastern Jura3.43.493.123.83.43.4100.0.
Western Plateau37.19.362.922.9..100.0.
Central Plateau11.94.288.118.9..100.0.
Eastern Plateau17.16.482.922.8..100.0.
Western Pre-Alps4.61.792.212.73.21.4100.0.
Central Pre-Alps8.91.786.19.45.01.3100.0.
Eastern Pre-Alps6.61.691.210.52.21.0100.0.
Northwestern Alps1.90.993.511.24.61.4100.0.
Central Alps2.11.585.715.812.23.4100.0.
Northeastern Alps1.51.183.513.515.03.1100.0.
Southwestern Alps0.60.493.37.46.01.1100.0.
Southeastern Alps1.70.693.27.35.21.0100.0.
Southern Alps1.70.584.55.713.81.3100.0.
Switzerland3.60.389.22.97.20.5100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #170204/156587

NFI4b

forest area: stand stability · regeneration cover · 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 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
stand stabilityregeneration cover1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
critical< 1%......1.450..1.450
1-9%....0.41002.8350.7713.830
10-25%......1.450..1.450
26-50%......1.058..1.058
51-75%............
76-100%......0.3100..0.3100
total....0.41006.9220.7718.021
less stable< 1%....0.7713.531..4.229
1-9%0.771..3.23311.7172.53818.214
10-25%....2.9359.7191.84514.315
26-50%....0.7713.1331.1584.927
51-75%....0.41001.058..1.450
76-100%0.4100....0.31000.41001.158
total1.158..7.92129.4105.72544.19
stable< 1%....0.7711.4500.41002.538
1-9%1.158..1.1589.4193.93015.515
10-25%1.158..0.77110.7181.84514.315
26-50%0.4100..1.1583.5311.4506.324
51-75%0.4100....2.438..2.835
76-100%0.771..1.1580.771..2.538
total3.631..4.72728.0117.52143.89
total< 1%....1.4506.2230.41008.021
1-9%1.845..4.72723.9127.12237.59
10-25%1.158..3.63121.8123.53130.011
26-50%0.4100..1.8457.6212.53812.317
51-75%0.4100..0.41003.531..4.229
76-100%1.158..1.1581.4500.41003.930
total4.727..13.01664.3713.81595.96

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170205/156588

NFI3

forest area: slope (20% classes) · economic region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
slope (20% classes)
to 20%21-40 %over 100%total
economic region1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura1.33830.4790.75032.47
Eastern Jura0.21005.31090.21005.618
Western Plateau1.9313.2133..5.018
Central Plateau1.2388.8174..9.912
Eastern Plateau1.1415.3227..6.316
Western Pre-Alps1.33726.1770.94528.36
Central Pre-Alps4.52043.5552.52650.55
Eastern Pre-Alps2.62536.4610.94539.95
Northwestern Alps0.75036.3561.83138.95
Central Alps0.47114.51042.13017.08
Northeastern Alps0.37118.9803.42122.66
Southwestern Alps0.55873.8414.81979.13
Southeastern Alps1.43578.4404.42084.13
Southern Alps2.328111.53218.19132.02
Switzerland19.69492.31539.86551.71

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170206/156589

NFI4b

forest area: stand stability · regeneration cover · 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 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilityregeneration cover %± %± %± %± %± %± %±
critical< 1%......1.41.46.03.4..1.50.7
1-9%..3.42.42.42.46.83.02.02.05.13.54.01.2
10-25%..1.71.7..2.71.92.02.0..1.50.7
26-50%....2.42.41.41.42.02.0..1.10.6
51-75%..............
76-100%......1.41.4....0.40.4
total..5.22.94.93.413.74.012.04.65.13.58.31.7
less stable< 1%..3.42.412.25.14.12.34.02.8..4.31.2
1-9%15.410.024.15.69.74.621.94.818.05.417.96.119.02.4
10-25%..22.45.517.15.913.74.012.04.612.85.315.02.2
26-50%..3.42.47.34.15.52.74.02.87.84.35.11.3
51-75%..1.71.72.42.4..4.02.8..1.50.7
76-100%7.77.4..2.42.4....2.62.51.10.6
total23.111.755.26.551.27.845.25.842.07.041.07.946.03.0
stable< 1%..1.71.77.34.1..4.02.82.62.52.51.0
1-9%23.111.712.14.37.44.120.64.710.04.228.27.216.12.2
10-25%23.211.78.63.719.56.215.14.218.05.412.85.314.92.2
26-50%7.77.48.63.72.42.45.52.76.03.410.24.96.61.5
51-75%7.77.43.42.44.93.4..6.03.4..2.91.0
76-100%15.410.05.22.92.42.4..2.02.0..2.61.0
total76.911.739.76.444.07.841.15.846.07.153.88.045.73.0
total< 1%..5.22.919.56.25.52.714.04.92.62.58.31.7
1-9%38.413.539.76.419.66.249.45.930.06.551.38.039.12.9
10-25%23.211.732.86.236.57.531.55.432.06.625.67.031.32.8
26-50%7.77.412.14.312.25.112.33.812.04.618.06.212.82.0
51-75%7.77.45.22.97.34.1..10.04.2..4.41.2
76-100%23.111.75.22.94.93.41.41.42.02.02.62.54.01.2
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 #170207/156590

NFI3

forest area: number of types natural hazards SilvaProtect · biogeographical region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect %± %± %± %± %± %± %±
no natural hazard..............
one natural hazard81.22.694.11.874.81.359.02.470.52.373.31.673.40.8
two natural hazards15.12.45.91.818.41.127.02.223.82.219.91.419.60.7
three natural hazards3.21.2..5.20.611.61.65.21.16.00.95.80.4
four natural hazards0.50.5..1.60.42.40.80.50.40.80.31.20.2
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, 03.11.2014 #170208/156591

NFI4b

forest area: stand stability · regeneration cover · 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 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilityregeneration cover1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
critical< 1%......0.31001.158..1.450
1-9%..0.7710.31001.7440.41000.7713.830
10-25%..0.4100..0.7710.4100..1.450
26-50%....0.31000.31000.4100..1.058
51-75%..............
76-100%......0.3100....0.3100
total..1.1580.7713.4312.1410.7718.021
less stable< 1%..0.7711.7441.0580.771..4.229
1-9%0.7715.0261.4505.5253.2332.53818.314
10-25%..4.7282.4383.4312.1411.84514.415
26-50%..0.7711.0581.4500.7711.1584.927
51-75%..0.41000.3100..0.771..1.450
76-100%0.4100..0.3100....0.41001.158
total1.15811.5177.22111.3177.4215.72544.29
stable< 1%..0.41001.058..0.7710.41002.538
1-9%1.1582.5381.1585.2251.8453.93015.515
10-25%1.1581.8452.8353.8303.2331.84514.315
26-50%0.41001.8450.31001.4501.1581.4506.324
51-75%0.41000.7710.771..1.158..2.835
76-100%0.7711.1580.3100..0.4100..2.538
total3.6328.3206.22310.3188.1207.52143.99
total< 1%..1.1582.8351.4502.5380.41008.021
1-9%1.8458.3202.83512.4165.3257.12237.69
10-25%1.1586.9235.2257.9205.6253.53130.111
26-50%0.41002.5381.7453.1332.1412.53812.317
51-75%0.41001.1581.058..1.845..4.229
76-100%1.1581.1580.7710.31000.41000.41003.930
total4.72820.91314.21525.01117.61313.81596.26

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170209/156592

NFI3

forest area: number of types natural hazards SilvaProtect · biogeographical region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
no natural hazard..............
one natural hazard32.1728.68156.3341.7547.8598.63405.12
two natural hazards6.0171.83238.5619.1916.11026.88108.34
three natural hazards1.338..10.9138.2143.5228.11431.97
four natural hazards0.2100..3.4231.7310.4711.1416.716
total39.5630.47209.1270.7367.84134.62552.01

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170210/156593

NFI4b

forest area: stand stability · regeneration cover · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2009/13
economic region
Western JuraEastern JuraWestern PlateauCentral PlateauEastern PlateauWestern Pre-AlpsCentral Pre-AlpsEastern Pre-AlpsNorthwestern AlpsCentral AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
stand stabilityregeneration cover %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
critical< 1%......................1.41.46.03.4..1.40.7
1-9%............5.35.1..3.33.36.76.5..6.83.02.02.05.13.54.01.2
10-25%................3.33.3....2.71.92.02.0..1.40.7
26-50%..................6.76.5..1.41.42.02.0..1.10.6
51-75%..............................
76-100%......................1.41.4....0.40.4
total............5.35.1..6.74.613.38.8..13.74.012.04.65.13.58.31.7
less stable< 1%..............25.015.36.74.66.76.511.17.44.12.34.02.8..4.41.2
1-9%15.310.0........22.314.031.610.712.511.720.07.3..16.78.821.94.818.05.417.96.119.02.4
10-25%..........21.813.731.610.7..16.76.826.711.516.78.813.74.012.04.612.85.315.02.2
26-50%..............25.015.36.74.66.76.5..5.52.74.02.87.84.35.11.3
51-75%............5.35.1....6.76.5....4.02.8..1.50.7
76-100%7.77.4..................5.65.4....2.62.51.10.6
total23.011.7........44.116.668.410.762.517.150.09.146.712.950.011.845.25.842.07.041.07.946.03.0
stable< 1%............5.35.112.511.7....11.17.4..4.02.82.62.52.61.0
1-9%23.011.7........22.314.0..12.511.716.76.86.76.55.65.420.64.710.04.228.27.216.12.2
10-25%23.311.8........11.210.65.35.1..10.05.520.010.427.810.615.14.218.05.412.85.314.92.2
26-50%7.77.4........11.210.610.57.1..6.74.6..5.65.45.52.76.03.410.24.96.61.5
51-75%7.77.4..............6.74.613.38.8....6.03.4..2.91.0
76-100%15.310.0........11.210.65.35.112.511.73.33.3......2.02.0..2.61.0
total77.011.7........55.916.626.310.137.517.143.39.140.012.750.011.841.15.846.07.153.88.045.73.0
total< 1%............5.35.137.517.16.74.66.76.522.29.85.52.714.04.92.62.58.41.7
1-9%38.313.5........44.716.636.811.125.015.340.09.013.38.822.39.849.45.930.06.551.38.039.02.9
10-25%23.311.8........33.015.736.811.1..30.08.446.712.944.411.731.55.432.06.625.67.031.32.8
26-50%7.77.4........11.210.610.57.125.015.313.36.213.38.85.65.412.33.812.04.618.06.212.82.0
51-75%7.77.4..........5.35.1..6.74.620.010.4....10.04.2..4.41.2
76-100%23.011.7........11.210.65.35.112.511.73.33.3..5.65.41.41.42.02.02.62.54.11.2
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 #170211/156594

NFI4b

forest area: stand stability · regeneration cover · 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 2009/13
stand stability
criticalless stablestabletotal
economic regionregeneration cover1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura< 1%........
1-9%..0.7711.1581.845
10-25%....1.1581.158
26-50%....0.41000.4100
51-75%....0.41000.4100
76-100%..0.41000.7711.158
total..1.1583.6314.627
Eastern Jura< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Western Plateau< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Central Plateau< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Eastern Plateau< 1%........
1-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
Western Pre-Alps< 1%........
1-9%..0.7700.7701.549
10-25%..0.7710.41001.158
26-50%....0.41000.4100
51-75%........
76-100%....0.41000.4100
total..1.5501.9443.333
Central Pre-Alps< 1%....0.41000.4100
1-9%0.41002.240..2.537
10-25%..2.2400.41002.537
26-50%....0.7710.771
51-75%..0.4100..0.4100
76-100%....0.41000.4100
total0.41004.7271.8446.822
Eastern Pre-Alps< 1%..0.7710.41001.157
1-9%..0.41000.41000.771
10-25%........
26-50%..0.771..0.771
51-75%........
76-100%....0.41000.4100
total..1.8441.1572.935
Northwestern Alps< 1%..0.771..0.771
1-9%0.41002.1401.8444.328
10-25%0.41001.8441.1573.233
26-50%..0.7710.7711.450
51-75%....0.7710.771
76-100%....0.41000.4100
total0.7715.4254.62710.717
Central Alps< 1%..0.3100..0.3100
1-9%0.3100..0.31000.770
10-25%..1.4491.0572.437
26-50%0.31000.3100..0.770
51-75%..0.31000.7701.057
76-100%........
total0.7702.4372.1405.224
Northeastern Alps< 1%..0.7700.7701.449
1-9%..1.1570.41001.450
10-25%..1.1571.8442.934
26-50%....0.41000.4100
51-75%........
76-100%..0.4100..0.4100
total..3.2323.2326.422
Southwestern Alps< 1%0.31001.058..1.450
1-9%1.7445.5255.22512.416
10-25%0.7713.4313.8307.920
26-50%0.31001.4501.4503.133
51-75%........
76-100%0.3100....0.3100
total3.43111.31710.31825.011
Southeastern Alps< 1%1.1580.7710.7712.538
1-9%0.41003.2331.8455.325
10-25%0.41002.1413.2335.625
26-50%0.41000.7711.1582.141
51-75%..0.7711.1581.845
76-100%....0.41000.4100
total2.1417.4218.12017.613
Southern Alps< 1%....0.41000.4100
1-9%0.7712.5383.9307.122
10-25%..1.8451.8453.531
26-50%..1.1581.4502.538
51-75%........
76-100%..0.4100..0.4100
total0.7715.7257.52113.815
Switzerland< 1%1.4504.2292.5388.121
1-9%3.83018.31415.51537.69
10-25%1.45014.41514.41530.211
26-50%1.0584.9276.42412.317
51-75%..1.4502.8354.229
76-100%0.31001.1582.5383.930
total8.02144.3944.1996.46

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170212/156595

NFI3

forest area: number of types natural hazards SilvaProtect · canton
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
number of types natural hazards SilvaProtect
no natural hazardone natural hazardtwo natural hazardsthree natural hazardsfour natural hazardstotal
canton %± %± %± %± %± %±
AG..100.0.......100.0.
AI..80.08.315.08.15.04.9..100.0.
AR..72.210.727.810.6....100.0.
BE..80.01.815.41.64.00.90.60.4100.0.
BL/BS..95.24.14.84.7....100.0.
FR..91.03.06.72.72.21.6..100.0.
GE............
GL..54.06.432.96.08.23.54.92.8100.0.
GR..71.71.822.51.74.80.91.00.4100.0.
JU..93.53.16.53.1....100.0.
LU..88.15.011.95.0....100.0.
NE..69.29.030.89.1....100.0.
NW..65.010.121.88.78.76.04.44.3100.0.
OW..79.65.514.84.93.72.61.91.8100.0.
SG..82.22.713.22.43.01.21.50.9100.0.
SH..100.0.......100.0.
SO..55.611.733.311.15.65.45.65.4100.0.
SZ..83.24.113.23.71.21.22.41.7100.0.
TG..81.39.718.89.8....100.0.
TI..74.51.819.11.66.01.00.30.2100.0.
UR..37.16.238.76.214.54.59.73.8100.0.
VD..68.84.119.23.512.02.9..100.0.
VS..59.72.326.92.111.21.52.20.7100.0.
ZG..93.35.46.76.5....100.0.
ZH..100.0.......100.0.
Switzerland..73.40.819.60.75.80.41.20.2100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170213/156596

NFI4b

forest area: stand stability · degree of cover of regeneration (7 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %± %±
critical< 1%......1.51.57.14.0..1.50.7
1-4%....1.81.35.92.9..4.93.42.91.0
5-9%....1.81.3..2.42.4..1.10.6
10-25%....0.90.92.92.02.42.4..1.40.7
26-50%....0.90.91.51.52.42.4..1.10.6
51-75%..............
76-100%......1.51.5....0.40.4
total....5.52.213.24.114.35.44.93.48.31.7
less stable< 1%....6.42.34.42.52.42.42.42.44.41.2
1-4%....5.52.211.83.911.95.09.74.68.41.7
5-9%15.410.0..12.73.210.33.77.14.07.34.110.61.9
10-25%....20.03.814.74.39.54.512.25.115.02.2
26-50%....3.61.85.92.94.83.39.84.75.11.3
51-75%....1.81.3..4.83.3..1.50.7
76-100%7.77.4..0.90.9....2.42.41.10.6
total23.011.7..50.94.847.06.140.57.643.97.845.93.0
stable< 1%....3.61.8..4.83.32.42.42.61.0
1-4%....6.42.311.83.97.14.019.66.29.51.8
5-9%23.011.7..5.52.27.43.22.42.47.34.16.61.5
10-25%23.211.7..12.73.216.24.519.06.112.25.114.92.2
26-50%7.77.4..6.42.34.42.57.14.09.74.66.61.5
51-75%7.77.4..4.52.0..4.83.3..2.91.0
76-100%15.410.0..4.52.0......2.61.0
total77.011.7..43.64.739.85.945.27.751.27.845.73.0
total< 1%....10.02.95.92.914.35.44.93.48.41.7
1-4%....13.63.329.45.519.06.134.27.420.72.4
5-9%38.413.5..20.03.817.74.611.95.014.65.518.32.3
10-25%23.211.7..33.64.533.85.731.07.124.36.731.32.8
26-50%7.77.4..10.93.011.83.914.35.419.66.212.82.0
51-75%7.77.4..6.42.3..9.54.5..4.41.2
76-100%23.011.7..5.52.21.51.5..2.42.44.01.2
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 #170214/156597

NFI3

forest area: number of types natural hazards SilvaProtect · canton
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
number of types natural hazards SilvaProtect
no natural hazardone natural hazardtwo natural hazardsthree natural hazardsfour natural hazardstotal
canton1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
AG..1.733......1.733
AI..2.4190.5560.2100..3.016
AR..2.1240.843....2.919
BE..68.3413.2113.4230.55885.34
BL/BS..4.0200.2100....4.220
FR..14.891.1400.471..16.39
GE............
GL..5.7153.4210.9440.55710.510
GR..77.5424.385.2181.141108.13
JU..10.3110.750....11.011
LU..6.3150.844....7.114
NE..3.2221.435....4.718
NW..2.9221.0430.4700.21004.516
OW..7.7121.4340.4700.21009.710
SG..28.464.6191.1410.55834.55
SH..0.657......0.657
SO..1.7311.0400.21000.21003.123
SZ..12.6102.0290.21000.47015.28
TG..2.2260.557....2.724
TI..80.6320.796.5160.471108.12
UR..4.3194.5191.7321.14011.610
VD..15.6104.4202.726..22.78
VS..47.2521.388.9131.73179.13
ZG..2.5210.2100....2.620
ZH..1.535......1.535
Switzerland..404.22108.0431.976.716550.91

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170215/156598

NFI4b

forest area: stand stability · degree of cover of regeneration (7 classes) · 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 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-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%......0.31001.158..1.450
1-4%....0.7711.450..0.7712.835
5-9%....0.771..0.4100..1.158
10-25%....0.41000.7710.4100..1.450
26-50%....0.41000.31000.4100..1.058
51-75%..............
76-100%......0.3100....0.3100
total....2.1413.1332.1410.7718.021
less stable< 1%....2.5381.0580.41000.41004.229
1-4%....2.1412.7351.8441.4508.121
5-9%0.771..5.0272.4371.1581.15810.218
10-25%....7.8213.4311.4501.84514.415
26-50%....1.4501.4500.7711.4504.927
51-75%....0.771..0.771..1.450
76-100%0.4100..0.4100....0.41001.158
total1.158..19.91310.9176.0246.42344.39
stable< 1%....1.450..0.7710.41002.538
1-4%....2.5382.7351.1582.9359.120
5-9%1.158..2.1411.7450.41001.1586.424
10-25%1.158..5.0273.8302.8351.84514.415
26-50%0.4100..2.5381.0581.1581.4506.424
51-75%0.4100..1.845..0.771..2.835
76-100%0.771..1.845......2.538
total3.631..17.0149.3196.7227.52144.19
total< 1%....3.9301.4502.1410.7718.121
1-4%....5.3266.8222.8355.02620.013
5-9%1.845..7.8214.1281.8442.14117.614
10-25%1.158..13.1167.9204.6273.63130.211
26-50%0.4100..4.3292.7352.1412.93512.317
51-75%0.4100..2.538..1.450..4.329
76-100%1.158..2.1410.3100..0.41003.930
total4.727..39.0923.31114.81514.61596.46

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170216/156599

NFI3

forest area: number of types natural hazards SilvaProtect · production region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect %± %± %± %± %± %±
no natural hazard............
one natural hazard81.02.795.02.084.71.464.71.373.41.673.40.8
two natural hazards15.22.55.02.012.81.324.81.219.91.519.60.7
three natural hazards3.31.2..2.10.68.50.75.90.95.80.4
four natural hazards0.50.5..0.30.22.10.40.80.31.20.2
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 #170217/156600

NFI4b

forest area: stand stability · degree of cover of regeneration (7 classes) · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI3/NFI4 combined
restriction: avalanches SilvaProtect, modelled and assigned = inside perimeter
grid:
state 2009/13
canton
AGAIARBEBL/BSFRGEGLGRJULUNENWOWSGSHSOSZTGTIURVDVSZGZHSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %± %±
critical< 1%................4.82.7..........................1.41.4....1.40.7
1-4%......2.42.3..............................7.45.010.09.5..5.52.7....2.91.0
5-9%................1.61.6........20.018.1................1.41.4....1.10.6
10-25%......2.42.3........1.61.6..........................2.71.9....1.40.7
26-50%................1.61.6................16.715.3........1.41.4....1.10.6
51-75%....................................................
76-100%............................................1.41.4....0.40.4
total......4.73.3........9.73.8........20.018.1......16.715.3..7.45.010.09.5..13.74.0....8.31.7
less stable< 1%..33.328.0100.0.2.42.3......9.28.83.22.2..........10.09.5..........10.09.59.18.74.12.3....4.31.2
1-4%......2.42.3..33.327.3..9.28.811.34.0..50.035.5....20.018.1..........7.45.0....12.33.8....8.41.7
5-9%......16.65.7........8.13.5........40.022.120.012.7....16.715.3..7.45.0..27.313.49.63.4....10.61.9
10-25%......23.96.6......18.311.812.94.3..50.035.5..33.327.8..10.09.5....33.319.3..11.16.020.012.79.18.713.74.0....14.92.2
26-50%......4.73.3........4.82.7..........20.012.7........7.55.110.09.5..5.52.7....5.11.3
51-75%................3.22.2........20.018.1............10.09.5........1.50.7
76-100%..............9.28.8..50.035.5..................3.73.6..........1.20.7
total..33.328.0100.0.50.07.7..33.327.3..45.815.143.56.350.035.5100.0...33.327.880.018.060.015.5....50.020.5..37.19.350.015.945.515.045.25.8....46.03.0
stable< 1%..33.328.0..2.42.3......9.28.84.82.7..........10.09.5....................2.61.0
1-4%..33.328.0..9.54.5..33.327.3....9.73.8....................18.57.5....12.33.8....9.41.8
5-9%......9.54.5......8.48.04.82.7....................7.45.010.09.59.18.78.33.2....6.51.5
10-25%......14.45.4......27.513.616.14.750.035.5........20.012.7....16.715.3..14.86.820.012.79.18.715.14.2....15.02.2
26-50%......4.73.3..33.327.3..9.28.84.82.7......33.327.8............14.86.8..18.211.65.52.7....6.71.5
51-75%......4.73.3........4.82.7....33.327.4..........16.715.3....10.09.5........2.91.0
76-100%................1.61.6....66.727.333.327.8..10.09.5............18.211.6......2.61.0
total..66.727.9..45.37.7..66.727.3..54.215.246.86.350.035.5..100.0.66.727.7..40.015.5....33.319.3..55.59.640.015.654.515.041.15.8....45.73.0
total< 1%..66.727.9100.0.4.73.3......18.311.812.94.3..........20.012.7..........10.09.59.18.75.52.7....8.31.7
1-4%..33.328.0..14.25.4..66.727.3..9.28.821.05.2..50.035.5....20.018.1..........33.39.110.09.5..30.15.4....20.72.4
5-9%......26.16.8......8.48.014.54.5........60.022.120.012.7....16.715.3..14.86.810.09.636.414.519.24.6....18.32.3
10-25%......40.77.6......45.815.130.65.950.035.550.035.5..33.327.8..30.014.5....50.020.5..25.98.440.015.618.211.631.55.4....31.42.8
26-50%......9.54.5..33.327.3..9.28.811.34.0......33.327.8..20.012.7....16.715.3..22.38.010.09.518.211.612.33.8....12.92.0
51-75%......4.73.3........8.13.5....33.327.4..20.018.1......16.715.3....20.012.7........4.31.2
76-100%..............9.28.81.61.650.035.5..66.727.333.327.8..10.09.5........3.73.6..18.211.61.41.4....4.11.2
total..100.0.100.0.100.0...100.0...100.0.100.0.100.0.100.0.100.0.100.0.100.0.100.0.....100.0...100.0.100.0.100.0.100.0.....100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170218/156601

NFI3

forest area: number of types natural hazards SilvaProtect · production region
unit: 1000 ha
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
no natural hazard............
one natural hazard31.0720.59100.53155.5396.83404.42
two natural hazards5.8171.14115.21159.6526.38108.04
three natural hazards1.338..2.52720.397.71531.87
four natural hazards0.2100..0.4715.0181.1416.616
total38.3621.69118.63240.42132.02550.91

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170219/156602

NFI4b

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 2009/13
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%..0.31000.31000.669
1-4%....0.31000.3100
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total..0.31000.6691.054
AR< 1%..0.3100..0.3100
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total..0.3100..0.3100
BE< 1%..0.31000.31000.771
1-4%0.31000.31001.4502.141
5-9%..2.4381.4503.830
10-25%0.31003.4312.1415.924
26-50%..0.7710.7711.450
51-75%....0.7710.771
76-100%........
total0.7717.2216.52314.415
BL/BS< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
FR< 1%........
1-4%..0.41000.41000.770
5-9%........
10-25%........
26-50%....0.41000.4100
51-75%........
76-100%........
total..0.41000.7701.157
GE< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
GL< 1%..0.41000.41000.870
1-4%..0.4100..0.4100
5-9%....0.41000.4100
10-25%..0.8701.2571.943
26-50%....0.41000.4100
51-75%........
76-100%..0.4100..0.4100
total..1.9432.3404.228
GR< 1%1.0580.7711.0582.835
1-4%..2.4382.1414.627
5-9%0.31001.7451.0583.133
10-25%0.31002.8353.5316.623
26-50%0.31001.0581.0582.438
51-75%..0.7711.0581.745
76-100%....0.31000.3100
total2.1419.41910.11821.612
JU< 1%........
1-4%........
5-9%........
10-25%....0.41000.4100
26-50%........
51-75%........
76-100%..0.4100..0.4100
total..0.41000.41000.870
LU< 1%........
1-4%..0.3100..0.3100
5-9%........
10-25%..0.3100..0.3100
26-50%........
51-75%........
76-100%........
total..0.670..0.670
NE< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%....0.31000.3100
76-100%....0.6700.670
total....1.0571.057
NW< 1%........
1-4%........
5-9%........
10-25%..0.4100..0.4100
26-50%....0.41000.4100
51-75%........
76-100%....0.41000.4100
total..0.41000.8691.255
OW< 1%........
1-4%..0.4100..0.4100
5-9%0.41000.770..1.157
10-25%........
26-50%........
51-75%..0.4100..0.4100
76-100%........
total0.41001.549..1.943
SG< 1%..0.41000.41000.770
1-4%........
5-9%..0.770..0.770
10-25%..0.41000.7701.157
26-50%..0.770..0.770
51-75%........
76-100%....0.41000.4100
total..2.2401.4503.631
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%..0.4100..0.4100
10-25%..0.7700.41001.157
26-50%0.4100....0.4100
51-75%....0.41000.4100
76-100%........
total0.41001.1570.7702.240
TG< 1%........
1-4%........
5-9%........
10-25%........
26-50%........
51-75%........
76-100%........
total........
TI< 1%........
1-4%0.7710.7711.8443.233
5-9%..0.7710.7711.450
10-25%..1.1581.4502.537
26-50%..0.7711.4502.241
51-75%........
76-100%..0.4100..0.4100
total0.7713.6315.4259.719
UR< 1%..0.3100..0.3100
1-4%0.3100....0.3100
5-9%....0.31000.3100
10-25%..0.7700.7701.349
26-50%..0.3100..0.3100
51-75%..0.31000.31000.770
76-100%........
total0.31001.7441.3493.330
VD< 1%..0.4100..0.4100
1-4%........
5-9%..1.1580.41001.550
10-25%..0.41000.41000.871
26-50%....0.8710.871
51-75%........
76-100%....0.8710.871
total..1.9442.3404.230
VS< 1%0.31001.058..1.450
1-4%1.4503.1333.1337.521
5-9%0.31002.4372.1414.826
10-25%0.7713.4313.8307.920
26-50%0.31001.4501.4503.133
51-75%........
76-100%0.3100....0.3100
total3.43111.31710.31825.011
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%1.4504.2292.5388.021
1-4%2.8358.0219.02019.813
5-9%1.15810.2186.32417.614
10-25%1.45014.31614.41630.111
26-50%1.1584.9276.42412.417
51-75%..1.4502.7354.129
76-100%0.31001.1582.5384.030
total8.02144.2943.9996.16

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170220/156603

NFI3

forest area: number of types natural hazards SilvaProtect · protection forest region
unit: %
unit of evaluation: forest
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid: terrestrial grid NFI3
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect %± %± %± %± %± %± %±
no natural hazard..............
one natural hazard86.11.977.91.671.82.159.72.372.62.073.41.673.40.8
two natural hazards11.51.816.11.420.21.926.92.122.31.919.91.519.60.7
three natural hazards2.10.85.20.94.91.011.21.54.81.05.90.95.80.4
four natural hazards0.30.30.80.33.10.82.20.70.40.30.80.31.20.2
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 #170221/156604

NFI4b

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 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
stand stabilitydegree of cover of regeneration (7 classes) %± %± %± %± %± %±
critical< 1%......2.11.1..1.40.7
1-4%......3.21.35.13.52.91.0
5-9%....2.82.71.10.8..1.10.6
10-25%......2.11.1..1.40.7
26-50%......1.60.9..1.10.6
51-75%............
76-100%......0.50.5..0.40.4
total....2.82.710.72.35.13.58.31.7
less stable< 1%....5.63.85.41.7..4.41.2
1-4%....8.34.68.62.110.24.98.41.7
5-9%15.410.0..16.76.29.72.27.74.310.61.9
10-25%....22.26.915.02.612.85.314.92.2
26-50%....5.63.84.81.67.84.35.11.3
51-75%....2.82.71.60.9..1.50.7
76-100%7.77.4....0.50.52.62.51.10.6
total23.111.7..61.18.145.73.741.07.946.03.0
stable< 1%....5.63.82.11.12.62.52.61.0
1-4%....8.34.68.12.020.66.59.51.8
5-9%23.111.7....6.51.87.74.36.61.5
10-25%23.011.7..5.63.816.72.712.85.314.92.1
26-50%7.77.4..8.34.65.41.710.24.96.61.5
51-75%7.77.4....3.81.4..2.91.0
76-100%15.410.0..8.34.61.10.8..2.61.0
total76.911.7..36.18.043.63.653.88.045.73.0
total< 1%....11.15.29.72.22.62.58.41.7
1-4%....16.76.219.92.935.97.720.82.4
5-9%38.513.5..19.46.617.32.815.45.818.32.3
10-25%23.011.7..27.87.533.93.525.67.031.32.8
26-50%7.77.4..13.95.811.82.418.06.212.82.0
51-75%7.77.4..2.82.75.41.7..4.41.2
76-100%23.111.7..8.34.62.11.12.62.54.11.2
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 #170222/156605
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