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NFI4b

forest area: slope (20% classes) · 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 2009/13
slope (20% classes)
to 20%21-40 %over 100%total
economic region %± %± %± %±
Western Jura2.21.696.616.51.11.1100.0.
Eastern Jura7.16.992.933.6..100.0.
Western Plateau42.214.357.826.1..100.0.
Central Plateau4.54.595.529.1..100.0.
Eastern Plateau11.87.888.229.6..100.0.
Western Pre-Alps7.43.288.218.44.42.5100.0.
Central Pre-Alps10.12.785.313.74.71.9100.0.
Eastern Pre-Alps8.22.689.115.22.71.6100.0.
Northwestern Alps1.01.095.115.93.91.9100.0.
Central Alps2.92.991.724.45.43.7100.0.
Northeastern Alps3.42.491.420.95.22.9100.0.
Southwestern Alps0.50.594.811.14.71.5100.0.
Southeastern Alps2.61.194.311.23.11.2100.0.
Southern Alps1.00.690.69.58.31.6100.0.
Switzerland3.90.591.64.44.60.6100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #170969/157352

NFI4b

forest area: slope (20% classes) · 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 2009/13
slope (20% classes)
to 20%21-40 %over 100%total
economic region1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura0.77130.71140.410031.810
Eastern Jura0.41005.1162..5.525
Western Plateau2.1442.8107..4.928
Central Plateau0.31006.5116..6.820
Eastern Plateau0.7715.4175..6.124
Western Pre-Alps1.94422.21211.15725.29
Central Pre-Alps4.72739.4842.24046.37
Eastern Pre-Alps3.23335.0861.15739.37
Northwestern Alps0.410035.0861.45036.87
Central Alps0.410011.71690.77012.713
Northeastern Alps0.77019.01201.15720.810
Southwestern Alps0.310068.9593.43172.75
Southeastern Alps1.84564.3662.14168.25
Southern Alps1.15891.8518.420101.34
Switzerland18.514437.82321.913478.22

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170970/157353

NFI4b

forest area: number of types natural hazards SilvaProtect · 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 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect %± %± %± %± %± %± %±
no natural hazard..............
one natural hazard82.13.793.72.775.01.952.63.673.23.671.72.672.61.2
two natural hazards13.23.36.32.717.71.730.73.322.93.421.42.419.91.1
three natural hazards4.72.1..5.61.012.52.43.91.65.51.36.00.6
four natural hazards....1.70.64.21.4..1.40.71.50.3
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 #170971/157354

NFI2

forest area: degree of mixture · crown closure · protection forest region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: rockfall SilvaProtect, modelled and assigned = inside perimeter
grid:
state 1993/95
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
degree of mixturecrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a......0.4100..0.41000.771
crowded..............
normal..............
loose..............
open..............
scattered..............
grouped crowded..............
grouped normal..............
heterogeneous..............
total......0.4100..0.41000.771
pure conifer forestn/a..............
crowded..1.1581.0580.3100....2.538
normal....1.4502.4371.1581.1585.924
loose0.7710.41001.0581.7440.41000.7714.927
open..0.41000.31000.31000.41000.41001.845
scattered......0.3100..0.41000.771
grouped crowded..0.4100........0.4100
grouped normal..............
heterogeneous..............
total0.7712.2413.8305.1251.8452.53816.115
mixed conifer forestn/a..............
crowded..0.7710.3100....0.41001.450
normal0.4100..0.31000.31000.4100..1.450
loose0.4100....0.3100....0.771
open..............
scattered0.41000.4100........0.771
grouped crowded..............
grouped normal....0.3100......0.3100
heterogeneous..............
total1.1581.1581.0580.7710.41000.41004.628
mixed broadleaf forestn/a..............
crowded..0.7710.31000.3100..0.41001.845
normal0.7710.4100........1.158
loose..............
open..0.4100........0.4100
scattered..........0.41000.4100
grouped crowded..............
grouped normal..............
heterogeneous..............
total0.7711.4500.31000.3100..0.7713.632
pure broadleaf forestn/a..............
crowded0.41000.7711.4500.771..3.2336.323
normal0.7710.7710.771....1.4503.532
loose......0.771..0.41001.058
open....0.31000.3100..1.1581.845
scattered..........0.41000.4100
grouped crowded..............
grouped normal..............
heterogeneous..............
total1.1581.4502.4381.744..6.42313.016
totaln/a......0.4100..0.41000.771
crowded0.41003.2333.1331.450..3.93012.017
normal1.8451.1582.4382.7351.4502.53811.917
loose1.1580.41001.0582.7350.41001.1586.623
open..0.7710.7710.7710.41001.4503.930
scattered0.41000.4100..0.3100..1.1582.141
grouped crowded..0.4100........0.4100
grouped normal....0.3100......0.3100
heterogeneous..............
total3.6326.1247.6218.2202.14110.31837.99

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170972/157355

NFI4b

forest area: number of types natural hazards SilvaProtect · 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 2009/13
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 hazard31.31026.211141.2434.6839.6874.05346.93
two natural hazards5.0261.84533.31020.21212.41622.11294.86
three natural hazards1.845..10.6188.2202.1415.72528.511
four natural hazards....3.2332.735..1.4507.422
total38.2927.911188.4365.7554.16103.24477.52

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170973/157356

NFI4b

forest area: number of types natural hazards SilvaProtect · canton
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: protection forest perimeter SilvaProtect = inside perimeter
grid:
state 2009/13
number of types natural hazards SilvaProtect
no natural hazardone natural hazardtwo natural hazardsthree natural hazardsfour natural hazardstotal
canton %± %± %± %± %± %±
AG..100.0.......100.0.
AI..80.012.510.09.810.09.8..100.0.
AR..60.015.840.015.8....100.0.
BE..76.32.917.42.65.91.60.50.5100.0.
BL/BS..90.09.310.09.6....100.0.
FR..93.33.74.43.12.22.2..100.0.
GE............
GL..61.59.619.27.87.75.311.56.3100.0.
GR..74.12.820.32.54.41.31.20.7100.0.
JU..96.72.83.33.3....100.0.
LU..90.96.19.16.2....100.0.
NE..71.412.128.612.1....100.0.
NW..57.119.028.617.414.313.5..100.0.
OW..80.87.811.56.33.83.83.83.8100.0.
SG..79.84.415.54.03.62.01.21.2100.0.
SH..100.0.......100.0.
SO..66.719.416.715.316.715.3..100.0.
SZ..80.06.417.56.0..2.52.5100.0.
TG..80.012.620.012.7....100.0.
TI..72.92.921.42.75.21.50.40.4100.0.
UR..43.19.439.19.310.75.97.14.9100.0.
VD..77.75.711.14.311.14.3..100.0.
VS..53.33.430.73.212.32.33.81.3100.0.
ZG..88.910.311.110.8....100.0.
ZH..100.0.......100.0.
Switzerland..72.81.219.71.16.00.61.60.3100.0.

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 04.11.2014 #170974/157357

NFI4b

forest area: number of types natural hazards SilvaProtect · 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 2009/13
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..1.257......1.257
AI..2.6270.31000.3100..3.221
AR..1.9371.347....3.225
BE..57.2713.0164.4270.310075.05
BL/BS..3.7310.4100....4.129
FR..15.7130.7700.4100..16.812
GE............
GL..6.2211.9430.8701.25710.014
GR..64.9617.8133.8301.15887.65
JU..11.3150.4100....11.715
LU..6.3210.670....6.920
NE..3.2301.349....4.525
NW..1.5460.8690.4100..2.732
OW..7.8171.1570.41000.41009.714
SG..24.2104.7271.1570.410030.48
SH..0.770......0.770
SO..1.5490.41000.4100..2.340
SZ..11.6142.536..0.410014.512
TG..2.4340.670....3.030
TI..59.7617.6134.3280.410082.04
UR..4.0273.6281.0570.7709.315
VD..15.9142.3402.340..20.512
VS..38.8822.3118.9192.73572.75
ZG..3.4240.4100....3.921
ZH..1.449......1.449
Switzerland..347.2394.1628.5117.422477.12

calculated by unit of reference: canton

© WSL, Swiss National Forest Inventory, 03.11.2014 #170975/157358

NFI4b

forest area: number of types natural hazards SilvaProtect · 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 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
number of types natural hazards SilvaProtect %± %± %± %± %± %±
no natural hazard............
one natural hazard81.63.896.12.784.72.163.12.072.02.772.71.2
two natural hazards13.63.43.92.712.41.925.51.821.42.419.81.1
three natural hazards4.92.1..2.60.98.81.25.21.35.90.6
four natural hazards....0.30.32.60.71.40.71.50.3
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 #170976/157359

NFI2

forest area: degree of mixture · crown closure · economic region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: rockfall SilvaProtect, modelled and assigned = inside perimeter
grid:
state 1993/95
degree of mixture
n/apure conifer forestmixed conifer forestmixed broadleaf forestpure broadleaf foresttotal
economic regioncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a............
crowded........0.41000.4100
normal......0.7710.7711.450
loose..0.41000.4100....0.771
open............
scattered....0.4100....0.4100
grouped crowded............
grouped normal............
heterogeneous............
total..0.41000.7710.7711.1582.935
Eastern Juran/a............
crowded............
normal............
loose..0.4100......0.4100
open............
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total..0.4100......0.4100
Western Plateaun/a............
crowded............
normal............
loose............
open............
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total............
Central Plateaun/a............
crowded............
normal....0.3100....0.3100
loose............
open............
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total....0.3100....0.3100
Eastern Plateaun/a............
crowded............
normal............
loose............
open............
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total............
Western Pre-Alpsn/a............
crowded............
normal............
loose............
open..0.4100......0.4100
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total..0.4100......0.4100
Central Pre-Alpsn/a............
crowded..0.4100....0.41000.771
normal........0.41000.4100
loose............
open......0.4100..0.4100
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total..0.4100..0.41000.7711.450
Eastern Pre-Alpsn/a............
crowded......0.41000.7711.157
normal............
loose............
open............
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total......0.41000.7711.157
Northwestern Alpsn/a............
crowded..0.7710.7710.7710.41002.537
normal......0.41000.41000.771
loose..0.4100......0.4100
open............
scattered....0.4100....0.4100
grouped crowded..0.4100......0.4100
grouped normal............
heterogeneous............
total..1.4501.1571.1570.7714.328
Central Alpsn/a............
crowded..0.770......0.770
normal..1.0570.3100..0.31001.744
loose..0.770......0.770
open..0.3100......0.3100
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total..2.7340.3100..0.31003.430
Northeastern Alpsn/a............
crowded..0.41000.4100..0.7701.449
normal..0.4100....0.41000.770
loose..0.4100......0.4100
open........0.41000.4100
scattered............
grouped crowded............
grouped normal....0.4100....0.4100
heterogeneous............
total..1.1570.770..1.4493.232
Southwestern Alpsn/a0.4100........0.4100
crowded..0.3100..0.31000.7711.450
normal..2.4370.3100....2.735
loose..1.7440.3100..0.7712.735
open..0.3100....0.31000.771
scattered..0.3100......0.3100
grouped crowded............
grouped normal............
heterogeneous............
total0.41005.1250.7710.31001.7448.220
Southeastern Alpsn/a............
crowded............
normal..1.1580.4100....1.450
loose..0.4100......0.4100
open..0.4100......0.4100
scattered............
grouped crowded............
grouped normal............
heterogeneous............
total..1.8450.4100....2.141
Southern Alpsn/a0.4100........0.4100
crowded....0.41000.41003.2333.930
normal..1.158....1.4502.538
loose..0.771....0.41001.158
open..0.4100....1.1581.450
scattered..0.4100..0.41000.41001.158
grouped crowded............
grouped normal............
heterogeneous............
total0.41002.5380.41000.7716.42310.318
Switzerlandn/a0.771........0.771
crowded..2.5381.4501.8456.42312.017
normal..5.9241.3501.1583.53211.917
loose..4.9270.771..1.0586.723
open..1.845..0.41001.8453.930
scattered..0.7710.7710.41000.41002.141
grouped crowded..0.4100......0.4100
grouped normal....0.4100....0.4100
heterogeneous............
total0.77116.1154.6283.63213.11638.09

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170977/157360

NFI4b

forest area: landslide/mudflow 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 2009/13
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter18.6135.62514.81556.7722.312118.15
outside perimeter19.01312.31795.95152.2478.95358.33
total37.6917.914110.74208.93101.34476.32

calculated by unit of reference: production region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170978/157361

NFI4b

forest area: landslide/mudflow 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 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter43.54.014.02.022.92.934.93.321.63.022.12.524.71.2
outside perimeter56.54.086.02.077.12.965.13.378.43.077.92.575.31.2
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 #170979/157362

NFI4b

forest area: landslide/mudflow 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 2009/13
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern AlpsSwitzerland
landslide/mudflow SilvaProtect, modelled and assigned1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
inside perimeter24.01215.11516.21425.41014.81522.312117.85
outside perimeter31.11093.0554.7647.3753.4778.95358.63
total55.18108.2470.9572.7568.25101.34476.32

calculated by unit of reference: protection forest region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170980/157363

NFI4b

forest area: landslide/mudflow 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 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region %± %± %±
Western Jura46.05.354.05.3100.0.
Eastern Jura71.412.128.612.1100.0.
Western Plateau16.910.983.110.9100.0.
Central Plateau40.910.559.110.5100.0.
Eastern Plateau29.411.170.611.0100.0.
Western Pre-Alps13.34.186.74.1100.0.
Central Pre-Alps7.82.492.22.4100.0.
Eastern Pre-Alps20.03.880.03.8100.0.
Northwestern Alps22.34.177.74.1100.0.
Central Alps32.47.767.67.7100.0.
Northeastern Alps22.45.577.65.5100.0.
Southwestern Alps34.93.365.13.3100.0.
Southeastern Alps21.63.078.43.0100.0.
Southern Alps22.12.577.92.5100.0.
Switzerland24.71.275.31.2100.0.

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 04.11.2014 #170981/157364

NFI2

forest area: altitudinal vegetation zone · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: rockfall SilvaProtect, modelled and assigned = inside perimeter
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
altitudinal vegetation zonedegree of cover (aerial photo, 5 classes) %± %± %± %± %± %± %±
upper subalpine0-20%..............
21-40%..............
41-60%......50.035.4....50.035.4
61-80%......50.035.4....50.035.4
over 80%..............
total......100.0.....100.0.
lower subalpine0-20%....16.715.29.99.4....10.57.0
21-40%......30.414.6....15.88.4
41-60%100.0...50.020.49.99.4....26.610.2
61-80%....33.319.319.912.6..100.0.31.710.7
over 80%......29.814.5....15.48.2
total100.0...100.0.100.0...100.0.100.0.
upper montane0-20%..............
21-40%....8.38.0......3.53.4
41-60%....33.313.625.021.725.021.755.316.638.09.0
61-80%....33.313.675.021.750.025.011.510.834.38.8
over 80%....25.012.5..25.021.733.215.724.28.0
total....100.0.100.0.100.0.100.0.100.0.
lower montane0-20%..............
21-40%..............
41-60%....7.16.9..50.035.425.021.712.06.5
61-80%....21.411.066.727.350.035.4..23.88.5
over 80%100.0...71.412.133.327.3..75.021.764.29.6
total100.0...100.0.100.0.100.0.100.0.100.0.
colline/submontane0-20%..............
21-40%..............
41-60%......40.021.9..7.16.98.94.9
61-80%16.715.2..33.319.320.017.9..14.39.418.26.7
over 80%83.315.2100.0.66.719.340.021.9..78.611.072.97.7
total100.0.100.0.100.0.100.0...100.0.100.0.
total0-20%....2.62.64.24.1....1.81.3
21-40%....2.62.612.76.9....3.71.8
41-60%11.310.6..21.16.620.88.333.319.324.17.921.33.9
61-80%11.110.5..28.97.437.49.950.020.417.47.126.74.3
over 80%77.613.9100.0.44.78.124.98.816.715.258.59.246.54.8
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170982/157365

NFI4b

forest area: landslide/mudflow 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 2009/13
landslide/mudflow SilvaProtect, modelled and assigned
inside perimeteroutside perimetertotal
economic region1000 ha± %1000 ha± %1000 ha± %
Western Jura14.61517.11431.810
Eastern Jura4.0301.6495.525
Western Plateau0.8704.1314.928
Central Plateau2.8334.0276.820
Eastern Plateau1.8444.3286.124
Western Pre-Alps3.33221.81025.29
Central Pre-Alps3.63142.7746.37
Eastern Pre-Alps7.92031.4839.37
Northwestern Alps8.22028.6936.87
Central Alps4.1278.61812.713
Northeastern Alps4.72616.11220.810
Southwestern Alps25.41047.3772.75
Southeastern Alps14.81553.4768.25
Southern Alps22.31278.95101.34
Switzerland118.25360.03478.22

calculated by unit of reference: economic region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170983/157366

NFI4b

forest area: avalanches 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 2009/13
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
avalanches SilvaProtect, modelled and assigned %± %± %± %± %± %± %±
inside perimeter12.33.2..19.61.734.93.424.23.512.82.019.01.1
outside perimeter87.73.2100.0.80.41.765.13.475.83.587.22.081.01.1
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 #170984/157367

NFI4b

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 2009/13
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 #170985/157368

NFI2

forest area: altitudinal vegetation zone · degree of cover (aerial photo, 5 classes) · biogeographical region
unit: 1000 ha
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: rockfall SilvaProtect, modelled and assigned = inside perimeter
grid:
state 1993/95
biogeographical region
JuraPlateauNorthern AlpsWestern Central-AlpsEastern Central-AlpsSouthern AlpsSwitzerland
altitudinal vegetation zonedegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
upper subalpine0-20%..............
21-40%..............
41-60%......0.3100....0.3100
61-80%......0.3100....0.3100
over 80%..............
total......0.771....0.771
lower subalpine0-20%....0.41000.3100....0.771
21-40%......1.058....1.058
41-60%0.4100..1.1580.3100....1.845
61-80%....0.7710.771..0.7712.141
over 80%......1.058....1.058
total0.4100..2.1413.431..0.7716.623
upper montane0-20%..............
21-40%....0.4100......0.4100
41-60%....1.4500.31000.41001.8453.930
61-80%....1.4501.0580.7710.41003.532
over 80%....1.158..0.41001.1582.538
total....4.3291.4501.4503.23310.318
lower montane0-20%..............
21-40%..............
41-60%....0.4100..0.41000.41001.158
61-80%....1.1580.7710.4100..2.141
over 80%0.771..3.5310.3100..1.1585.725
total0.771..5.0271.0580.7711.4508.820
colline/submontane0-20%..............
21-40%..............
41-60%......0.771..0.41001.058
61-80%0.4100..0.7710.3100..0.7712.141
over 80%1.8450.7711.4500.771..3.9308.520
total2.2410.7712.1411.744..5.02611.717
total0-20%....0.41000.3100....0.771
21-40%....0.41001.058....1.450
41-60%0.4100..2.8351.7440.7712.5388.121
61-80%0.4100..3.9303.1331.1581.84510.218
over 80%2.5380.7716.0242.1410.41006.12417.714
total3.2330.77113.5168.2202.14110.31838.19

calculated by unit of reference: biogeographical region

© WSL, Swiss National Forest Inventory, 03.11.2014 #170986/157369

NFI4b

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 2009/13
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 #170987/157370

NFI4b

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 2009/13
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 #170988/157371

NFI4b

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 2009/13
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 #170989/157372

NFI4b

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 2009/13
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 #170990/157373

NFI2

forest area: altitudinal vegetation zone · degree of cover (aerial photo, 5 classes) · production region
unit: %
unit of evaluation: accessible forest excluding shrub forest NFI1/NFI2/NFI3/NFI4 combined
restriction: rockfall SilvaProtect, modelled and assigned = inside perimeter
grid:
state 1993/95
production region
JuraPlateauPre-AlpsAlpsSouthern AlpsSwitzerland
altitudinal vegetation zonedegree of cover (aerial photo, 5 classes) %± %± %± %± %± %±
upper subalpine0-20%............
21-40%............
41-60%......50.035.4..50.035.4
61-80%......50.035.4..50.035.4
over 80%............
total......100.0...100.0.
lower subalpine0-20%......13.38.8..10.47.0
21-40%......20.310.4..15.98.4
41-60%100.0...100.0.19.910.3..26.510.2
61-80%......26.611.4100.0.31.510.7
over 80%......19.910.3..15.68.3
total100.0...100.0.100.0.100.0.100.0.
upper montane0-20%............
21-40%......5.65.4..3.43.3
41-60%....50.035.427.810.655.316.638.19.0
61-80%....50.035.444.411.711.510.834.48.8
over 80%......22.29.833.215.724.17.9
total....100.0.100.0.100.0.100.0.
lower montane0-20%............
21-40%............
41-60%......11.87.825.021.712.06.5
61-80%......35.311.6..23.78.5
over 80%100.0...100.0.52.912.175.021.764.39.6
total100.0...100.0.100.0.100.0.100.0.
colline/submontane0-20%............
21-40%............
41-60%......22.213.97.16.98.94.9
61-80%16.715.2..33.327.222.213.914.39.418.26.7
over 80%83.315.2100.0.66.727.255.616.678.611.072.97.7
total100.0.100.0.100.0.100.0.100.0.100.0.
total0-20%......3.32.3..1.81.3
21-40%......6.63.2..3.71.8
41-60%11.010.4..25.015.321.35.224.17.921.23.9
61-80%11.110.5..25.015.334.46.117.47.126.74.2
over 80%77.913.8100.0.50.017.734.46.158.59.246.54.8
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 #170991/157374

NFI4b

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 2009/13
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 #170992/157375
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