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NFI4b
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
restriction: rockfall SilvaProtect = inside perimeter
grid: grid NFI4 2009-2013
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpineno gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.050.035.4.0.0.0.050.035.4
medium gap.0.0.0.0.0.050.035.4.0.0.0.050.035.4
large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0..0.0.0.0100.0.
lower subalpineno gap.0.0.0.033.319.3.0.0.0.0.0.010.77.1
small gap100.0..0.033.319.319.912.6.0.050.035.431.810.7
medium gap.0.0.0.0.0.029.814.5.0.0.0.015.48.2
large gap.0.0.0.033.319.350.315.8.0.050.035.442.111.3
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0..0.0100.0.100.0.
upper montaneno gap.0.0.0.025.012.525.021.725.021.722.113.824.17.9
small gap.0.0.0.025.012.5.0.025.021.711.110.417.37.0
medium gap.0.0.0.016.710.825.021.725.021.733.215.724.17.9
large gap.0.0.0.025.012.550.025.025.021.733.615.831.08.6
very large gap.0.0.0.08.38.0.0.0.0.0.0.03.53.4
total.0.0.0.0100.0.100.0.100.0.100.0.100.0.
lower montaneno gap.0.0.0.057.113.233.327.350.035.450.025.048.010.0
small gap.0.0.0.028.612.133.327.350.035.450.025.032.09.3
medium gap50.035.4.0.07.16.9.0.0.0.0.0.08.15.5
large gap50.035.4.0.07.16.933.327.3.0.0.0.012.06.5
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.100.0.100.0.100.0.
colline/submontaneno gap33.319.3.0.083.315.220.017.9.0.042.913.242.58.6
small gap16.715.250.035.416.715.240.021.9.0.028.612.127.27.7
medium gap33.319.350.035.4.0.020.017.9.0.014.39.418.26.7
large gap16.715.2.0.0.0.020.017.9.0.014.39.412.15.7
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0..0.0100.0.100.0.
totalno gap22.213.9.0.047.48.112.56.733.319.334.48.832.54.5
small gap22.413.950.035.426.37.124.98.833.319.327.58.326.84.3
medium gap33.315.750.035.47.94.424.98.816.715.217.27.017.53.7
large gap22.213.9.0.015.85.937.79.916.715.220.87.622.24.0
very large gap.0.0.0.02.62.6.0.0.0.0.0.00.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #170439/156822

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter4.727..36.9922.91113.11613.21690.86
outside perimeter33.51027.911151.5442.8741.0890.04386.72
total38.2927.911188.4365.7554.16103.24477.52

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170440/156823

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton %± %± %±
AG..100.0.100.0.
AI30.014.970.014.6100.0.
AR10.09.790.09.7100.0.
BE18.72.681.32.6100.0.
BL/BS..100.0.100.0.
FR6.73.793.33.7100.0.
GE......
GL38.59.661.59.6100.0.
GR22.32.677.72.6100.0.
JU6.74.693.34.2100.0.
LU9.16.290.96.1100.0.
NE21.411.078.610.9100.0.
NW42.919.157.119.0100.0.
OW19.27.880.87.8100.0.
SG11.93.588.13.5100.0.
SH..100.0.100.0.
SO..100.0.100.0.
SZ15.05.785.05.7100.0.
TG..100.0.100.0.
TI10.12.089.92.0100.0.
UR32.08.968.08.9100.0.
VD18.65.381.45.3100.0.
VS33.53.266.53.2100.0.
ZG..100.0.100.0.
ZH..100.0.100.0.
Switzerland19.01.181.01.1100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170441/156824

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton1000 ha± %1000 ha± %1000 ha± %
AG..1.2571.257
AI1.0542.3303.221
AR0.31002.9283.225
BE14.11560.9675.05
BL/BS..4.1294.129
FR1.15715.71316.812
GE......
GL3.9296.22110.014
GR19.61368.1687.65
JU0.87010.91611.715
LU0.6706.3216.920
NE1.0573.5284.525
NW1.2551.5462.732
OW1.9437.8179.714
SG3.63126.7930.48
SH..0.7700.770
SO..2.3402.340
SZ2.24012.31414.512
TG..3.0303.030
TI8.32073.7582.04
UR3.0316.3209.315
VD3.83116.71420.512
VS24.41148.4772.75
ZG..3.9213.921
ZH..1.4491.449
Switzerland90.46386.72477.12

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170442/156825

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned %± %± %± %± %± %±
inside perimeter12.63.3..11.41.829.01.812.31.919.01.1
outside perimeter87.43.3100.0.88.61.871.01.887.71.981.01.1
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 #170443/156826

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter4.727..12.61660.5712.41690.36
outside perimeter32.91017.91498.05148.4488.84386.02
total37.6917.914110.74208.93101.34476.32

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170444/156827

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter8.42.218.72.319.02.733.53.222.73.012.31.919.01.1
outside perimeter91.62.281.32.381.02.766.53.277.33.087.71.981.01.1
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 #170445/156828
NFI4b
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: canton
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
restriction: rockfall SilvaProtect = inside perimeter
grid: grid NFI4 2009-2013
state 2009/13
altitudinal vegetation zone
upper subalpinelower subalpineupper montanelower montanecolline/submontanetotal
cantonarea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
AGno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
AIno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
ARno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
BEno gap.0.032.626.920.017.975.021.750.025.043.612.4
small gap.0.034.927.820.017.9.0.025.021.719.19.9
medium gap.0.0.0.040.021.9.0.025.021.718.79.7
large gap.0.032.626.920.017.925.021.7.0.018.79.7
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0100.0.100.0.100.0.100.0.100.0.
BL/BSno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0100.0.100.0.
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0100.0.100.0.
FRno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
GEno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
GLno gap.0.0.0.050.035.740.022.1.0.042.918.9
small gap.0.0.0.0.0.040.022.1.0.028.617.2
medium gap.0.0.0.0.0.020.018.0.0.014.313.3
large gap.0.0.0.050.035.7.0.0.0.014.313.3
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0100.0.100.0..0.0100.0.
GRno gap.0.0.0.024.915.325.021.7.0.019.910.3
small gap.0.0100.0.12.411.775.021.750.035.439.912.6
medium gap.0.0.0.024.915.3.0.050.035.419.910.3
large gap.0.0.0.037.817.2.0.0.0.020.210.4
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0100.0.100.0.100.0.100.0.100.0.
JUno gap.0.0.0.0.0.0.0.033.327.433.327.4
small gap.0.0.0.0.0.0.0.033.327.433.327.4
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.033.327.433.327.4
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0100.0.100.0.
LUno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
NEno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
NWno gap.0.0.0.0.0.0100.0..0.0100.0.
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0..0.0100.0.
OWno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0100.0.50.035.7
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0100.0..0.0.0.0.0.050.035.7
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0100.0..0.0.0.0100.0.100.0.
SGno gap.0.0.0.0.0.0.0.050.035.525.021.7
small gap.0.0.0.0100.0.100.0..0.050.025.1
medium gap.0.0.0.0.0.0.0.050.035.525.021.7
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0100.0.100.0.100.0.100.0.
SHno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
SOno gap.0.0.0.0.0.0.0.0100.0.50.035.5
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0100.0..0.050.035.5
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0.100.0.100.0.
SZno gap.0.0.0.0.0.0.0.0100.0.33.327.4
small gap.0.0.0.0.0.0100.0..0.033.327.4
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0100.0..0.0.0.033.327.4
total.0.0.0.0100.0.100.0.100.0.100.0.
TGno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
TIno gap.0.0.0.020.017.9100.0.50.014.445.011.1
small gap.0.0.0.020.017.9.0.025.012.520.09.0
medium gap.0.0.0.040.021.9.0.08.38.015.08.0
large gap.0.0100.0.20.017.9.0.016.710.820.09.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0100.0.100.0.100.0.100.0.100.0.
URno gap.0.033.327.433.327.450.035.6.0.037.517.2
small gap.0.066.727.433.327.4.0.0.0.037.517.2
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.033.327.450.035.6.0.025.015.4
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0100.0.100.0.100.0..0.0100.0.
VDno gap.0.0.0.0.0.0100.0.100.0.100.0.
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0.100.0.100.0.
VSno gap.0.0.0.025.021.733.327.320.017.912.56.7
small gap50.035.419.912.6.0.033.327.340.021.924.98.8
medium gap50.035.429.814.525.021.7.0.020.017.924.98.8
large gap.0.050.315.850.025.033.327.320.017.937.79.9
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.100.0.100.0.
ZGno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
ZHno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.0.0.0.0.0.0.0
medium gap.0.0.0.0.0.0.0.0.0.0.0.0
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0.0.0.0.0.0.0
Switzerlandno gap.0.010.26.924.28.048.010.042.58.632.64.5
small gap50.035.431.410.617.17.032.29.427.17.726.84.3
medium gap50.035.415.78.324.07.98.55.818.26.717.63.7
large gap.0.042.811.431.18.611.36.212.25.722.14.0
very large gap.0.0.0.03.63.5.0.0.0.00.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #170446/156829

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
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 perimeter4.72820.21313.41524.41115.51412.41690.56
outside perimeter50.4888.0557.5648.3752.7788.84385.82
total55.18108.2470.9572.7568.25101.34476.32

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170447/156830

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region %± %± %±
Western Jura14.63.885.43.8100.0.
Eastern Jura..100.0.100.0.
Western Plateau..100.0.100.0.
Central Plateau..100.0.100.0.
Eastern Plateau..100.0.100.0.
Western Pre-Alps11.73.988.33.9100.0.
Central Pre-Alps14.73.185.33.1100.0.
Eastern Pre-Alps7.32.592.72.5100.0.
Northwestern Alps28.14.471.94.4100.0.
Central Alps37.88.062.28.0100.0.
Northeastern Alps29.36.070.76.0100.0.
Southwestern Alps33.53.266.53.2100.0.
Southeastern Alps22.73.077.33.0100.0.
Southern Alps12.31.987.71.9100.0.
Switzerland19.01.181.01.1100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #170448/156831

NFI3

forest area: avalanches SilvaProtect, modelled and assigned · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
avalanches SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region1000 ha± %1000 ha± %1000 ha± %
Western Jura4.62727.11031.810
Eastern Jura..5.5255.525
Western Plateau..4.9284.928
Central Plateau..6.8206.820
Eastern Plateau..6.1246.124
Western Pre-Alps2.93522.21025.29
Central Pre-Alps6.82239.4846.37
Eastern Pre-Alps2.93536.4739.37
Northwestern Alps10.41726.4936.87
Central Alps4.8257.91912.713
Northeastern Alps6.12214.71320.810
Southwestern Alps24.41148.3772.75
Southeastern Alps15.51452.7768.25
Southern Alps12.41688.84101.34
Switzerland90.86387.52478.22

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170449/156832

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter8.52.72.51.87.21.112.52.43.91.610.01.88.00.7
outside perimeter91.52.797.51.892.81.187.52.496.11.690.01.892.00.7
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 #170450/156833

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
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 perimeter3.2330.77113.5168.2202.14110.31838.19
outside perimeter34.9927.211174.9357.5651.9692.94439.42
total38.2927.911188.4365.7554.16103.24477.52

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170451/156834

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton %± %± %±
AG..100.0.100.0.
AI..100.0.100.0.
AR..100.0.100.0.
BE7.31.892.71.8100.0.
BL/BS10.09.690.09.3100.0.
FR..100.0.100.0.
GE......
GL26.98.873.18.8100.0.
GR6.01.594.01.5100.0.
JU10.05.590.05.2100.0.
LU..100.0.100.0.
NE..100.0.100.0.
NW14.313.585.713.2100.0.
OW7.75.392.35.3100.0.
SG4.82.395.22.3100.0.
SH..100.0.100.0.
SO33.319.366.719.4100.0.
SZ7.54.292.54.2100.0.
TG..100.0.100.0.
TI8.71.991.31.9100.0.
UR28.48.671.68.6100.0.
VD3.72.696.32.6100.0.
VS11.32.288.72.2100.0.
ZG..100.0.100.0.
ZH..100.0.100.0.
Switzerland8.00.792.00.7100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170452/156835

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · canton
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
canton1000 ha± %1000 ha± %1000 ha± %
AG..1.2571.257
AI..3.2213.221
AR..3.2253.225
BE5.52569.5675.05
BL/BS0.41003.7314.129
FR..16.81216.812
GE......
GL2.7367.31910.014
GR5.22682.4587.65
JU1.25710.51611.715
LU..6.9206.920
NE..4.5254.525
NW0.41002.3362.732
OW0.7709.0159.714
SG1.45028.9930.48
SH..0.7700.770
SO0.8701.5492.340
SZ1.15713.41314.512
TG..3.0303.030
TI7.22274.8582.04
UR2.6346.6209.315
VD0.87119.71320.512
VS8.22064.5572.75
ZG..3.9213.921
ZH..1.4491.449
Switzerland38.29438.92477.12

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170453/156836

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %±
inside perimeter8.72.82.01.92.60.910.11.210.21.88.00.7
outside perimeter91.32.898.01.997.40.989.91.289.81.892.00.7
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 #170454/156837
NFI4b
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: production region
unit: %
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
restriction: rockfall SilvaProtect = inside perimeter
grid: grid NFI4 2009-2013
state 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %±
upper subalpineno gap.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.050.035.4.0.050.035.4
medium gap.0.0.0.0.0.050.035.4.0.050.035.4
large gap.0.0.0.0.0.0.0.0.0.0.0.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0..0.0100.0.
lower subalpineno gap.0.0.0.0.0.013.38.8.0.010.47.0
small gap100.0..0.0.0.026.611.450.035.431.610.7
medium gap.0.0.0.0.0.019.910.3.0.015.68.3
large gap.0.0.0.0100.0.40.212.750.035.442.311.3
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.100.0.100.0.
upper montaneno gap.0.0.0.0.0.027.810.622.113.824.07.9
small gap.0.0.0.0.0.022.29.811.110.417.17.0
medium gap.0.0.0.0100.0.11.17.433.215.724.48.0
large gap.0.0.0.0.0.033.311.133.615.831.18.6
very large gap.0.0.0.0.0.05.65.4.0.03.43.3
total.0.0.0.0100.0.100.0.100.0.100.0.
lower montaneno gap.0.0.0.050.035.452.912.150.025.047.810.0
small gap.0.0.0.050.035.429.411.150.025.032.09.3
medium gap50.035.4.0.0.0.05.95.7.0.08.15.5
large gap50.035.4.0.0.0.011.87.8.0.012.16.5
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.100.0.100.0.
colline/submontaneno gap33.319.3.0.033.327.255.616.642.913.242.38.6
small gap16.715.2100.0.33.327.222.213.928.612.127.27.8
medium gap33.319.3.0.033.327.211.110.514.39.418.36.8
large gap16.715.2.0.0.0.011.110.514.39.412.15.7
very large gap.0.0.0.0.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap22.213.9.0.025.015.334.46.134.48.832.34.5
small gap22.113.8100.0.25.015.326.25.627.58.326.84.3
medium gap33.415.7.0.037.517.113.14.317.27.017.73.7
large gap22.213.9.0.012.511.724.75.520.87.622.24.0
very large gap.0.0.0.0.0.01.61.6.0.00.90.9
total100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #170455/156838

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · production region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter3.3330.41002.93521.11210.31837.99
outside perimeter34.3917.614107.84187.8391.04438.42
total37.6917.914110.74208.93101.34476.32

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170456/156839

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · protection forest region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
rockfall SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter6.52.05.71.310.72.211.32.23.11.210.21.88.00.7
outside perimeter93.52.094.31.389.32.288.72.296.91.289.81.892.00.7
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 #170457/156840

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
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 perimeter3.6326.1247.6218.2202.14110.31837.99
outside perimeter51.58102.1463.3664.5566.1691.04438.42
total55.18108.2470.9572.7568.25101.34476.32

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170458/156841

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · economic region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region %± %± %±
Western Jura9.03.091.03.0100.0.
Eastern Jura7.16.992.96.8100.0.
Western Plateau..100.0.100.0.
Central Plateau4.54.595.54.5100.0.
Eastern Plateau..100.0.100.0.
Western Pre-Alps1.51.598.51.5100.0.
Central Pre-Alps3.11.596.91.5100.0.
Eastern Pre-Alps2.71.697.31.6100.0.
Northwestern Alps11.63.288.43.2100.0.
Central Alps27.07.373.07.3100.0.
Northeastern Alps15.54.884.54.8100.0.
Southwestern Alps11.32.288.72.2100.0.
Southeastern Alps3.11.296.91.2100.0.
Southern Alps10.21.889.81.8100.0.
Switzerland8.00.792.00.7100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #170459/156842

NFI3

forest area: rockfall SilvaProtect, modelled and assigned · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
rockfall SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region1000 ha± %1000 ha± %1000 ha± %
Western Jura2.93528.91031.810
Eastern Jura0.41005.1265.525
Western Plateau..4.9284.928
Central Plateau0.31006.5216.820
Eastern Plateau..6.1246.124
Western Pre-Alps0.410024.8925.29
Central Pre-Alps1.45044.8746.37
Eastern Pre-Alps1.15738.2739.37
Northwestern Alps4.32832.5836.87
Central Alps3.4309.31712.713
Northeastern Alps3.23217.61120.810
Southwestern Alps8.22064.5572.75
Southeastern Alps2.14166.1668.25
Southern Alps10.31891.04101.34
Switzerland38.09440.22478.22

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170460/156843
NFI4b
number of forest plots
altitudinal vegetation zone · area of largest gap (aerial photo, 5 classes)
unit of reference: biogeographical region
unit: %
unit of evaluation: accessible forest without shrub forest
restriction: rockfall SilvaProtect = inside perimeter
grid: grid NFI4 2009-2013
state 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
altitudinal vegetation zonearea of largest gap (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpineno gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
small gap.0.0.0.0.0.050.035.4.0.0.0.024.621.4
medium gap.0.0.0.0.0.050.035.450.035.4.0.050.025.0
large gap.0.0.0.0.0.0.0.050.035.4.0.025.421.9
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total.0.0.0.0.0.0100.0.100.0..0.0100.0.
lower subalpineno gap.0.0.0.025.015.3.0.0.0.0.0.09.66.5
small gap100.0..0.025.015.319.912.6.0.050.035.428.89.9
medium gap.0.0.0.025.015.329.814.5.0.0.0.023.69.2
large gap.0.0.0.025.015.350.315.8.0.050.035.438.010.6
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0..0.0100.0.100.0.
upper montaneno gap.0.0.0.023.111.725.021.720.017.927.213.424.27.5
small gap.0.0.0.023.111.7.0.020.017.99.18.615.26.3
medium gap.0.0.0.015.410.025.021.720.017.927.213.421.27.1
large gap.0.0.0.030.812.850.025.040.021.936.614.636.48.4
very large gap.0.0.0.07.77.4.0.0.0.0.0.03.03.0
total.0.0.0.0100.0.100.0.100.0.100.0.100.0.
lower montaneno gap.0.0.0.053.312.933.327.350.035.440.021.944.49.6
small gap.0.0.0.026.711.433.327.350.035.460.021.933.39.1
medium gap50.035.4.0.013.38.8.0.0.0.0.0.011.26.1
large gap50.035.4.0.06.76.433.327.3.0.0.0.011.16.0
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0..0.0100.0.100.0.100.0.100.0.100.0.
colline/submontaneno gap33.319.3.0.083.315.220.017.9.0.037.512.138.98.1
small gap16.715.250.035.416.715.240.021.9.0.031.311.627.77.5
medium gap33.319.350.035.4.0.020.017.9.0.012.58.316.76.2
large gap16.715.2.0.0.0.020.017.9100.0.18.89.816.76.2
very large gap.0.0.0.0.0.0.0.0.0.0.0.0.0.0
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
totalno gap22.213.9.0.042.97.612.56.720.012.632.38.029.84.2
small gap22.413.950.035.423.86.624.98.820.012.629.47.825.64.0
medium gap33.315.750.035.414.35.424.98.820.012.614.76.119.03.6
large gap22.213.9.0.016.75.837.79.940.115.523.67.324.83.9
very large gap.0.0.0.02.42.4.0.0.0.0.0.00.80.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 29.12.2015 #170461/156844

NFI3

forest area: forest type (12 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2004/06
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
forest type (12 classes) %± %± %± %± %± %± %±
inaccessible forest..............
shrub forest..............
permanently unstocked forest area..2.51.84.00.81.60.91.30.91.00.62.30.4
forest aisles, embankments1.91.3..0.60.30.50.5..1.70.80.80.2
permanently open stand1.01.0..2.10.64.21.46.52.03.11.02.90.5
selva, plantation..........1.00.60.20.1
coppice forest1.91.3..1.10.50.50.5..14.12.03.70.5
coppice with standards..........4.81.31.00.3
selection type high forest7.52.65.12.514.11.513.02.417.03.08.21.612.00.9
non-uniform high forest4.72.17.63.05.81.012.52.45.91.912.11.98.10.7
imcomplete..............
uniform high forest83.03.784.84.072.31.967.73.469.33.753.82.968.91.2
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 #170462/156845
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