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NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago248.7240.5721.998.51517.1105.020341.82
11-20 years ago66.5521.5914.6114.62112.7123.823123.64
21-30 years ago24.6911.31310.0143.82312.0135.31967.05
31-40 years ago13.1127.5166.4186.3188.5158.51550.36
41-50 years ago7.5167.2164.0225.2197.0176.01836.97
over 50 years ago11.11322.9920.41024.1934.2730.18142.84
total371.91111.1377.3452.5591.6458.75763.01
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6351.2413.4242.1300.8501.24110.314
11-20 years ago0.6580.6581.3380.6580.4710.6584.122
21-30 years ago0.4711.0450.8500.21000.6580.4713.424
31-40 years ago0.0.0.21000.8501.0450.6580.8503.424
41-50 years ago0.4710.0.0.4700.6580.6581.0452.926
over 50 years ago0.9451.5382.6283.6231.8337.81618.210
total3.9224.5219.3148.0154.82011.81342.37
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago28.4845.9624.7816.31017.61012.712145.53
11-20 years ago10.81322.5915.61110.01316.5106.81782.35
21-30 years ago4.82012.5127.6167.61613.2129.21454.86
31-40 years ago3.8236.9175.1195.3199.91410.11441.17
41-50 years ago1.6356.2184.0226.9175.11911.21334.97
over 50 years ago5.71814.11211.51329.3720.6971.64152.83
total55.16108.1368.5475.3382.94121.72511.51
totaln/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago278.7287.6450.0526.9835.6718.910497.71
11-20 years ago77.9544.7631.5715.11129.6711.213210.03
21-30 years ago29.8824.8918.41011.51325.8814.911125.24
31-40 years ago17.01114.61112.21212.61219.01019.41094.84
41-50 years ago9.51413.3128.41512.71212.71218.11074.65
over 50 years ago17.71038.5734.6757.0556.65109.63313.92
total430.91223.71155.12135.82179.22192.111316.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #861169/327500
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago67.741.24113.91182.73
11-20 years ago23.190.6584.52128.28
21-30 years ago16.2100.4714.92021.59
31-40 years ago6.0180.6581.3387.915
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.2220.4712.9267.416
total118.623.42328.47150.51
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.4700.0.0.0.0.470
total41.230.31005.11946.62
Western Plateauless than 10 years ago30.650.0.3.62334.25
11-20 years ago5.8180.0.0.8506.617
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago1.5370.0.0.21001.735
total44.130.0.5.01949.12
Central Plateauless than 10 years ago45.940.0.4.81950.73
11-20 years ago9.1140.21002.13011.412
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.6580.0.0.21000.850
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.8500.0.0.6581.338
total59.730.21009.21369.11
Eastern Plateauless than 10 years ago79.830.0.3.82283.63
11-20 years ago13.2110.0.1.24114.411
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.21000.0.0.4710.658
total101.610.0.6.018107.61
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.1220.0.3.4237.515
21-30 years ago1.0450.0.4.0225.120
31-40 years ago1.7330.0.2.3274.020
41-50 years ago0.7500.0.1.4342.128
over 50 years ago1.9320.0.2.8284.720
total17.690.210025.6743.33
Central Pre-Alpsless than 10 years ago25.880.0.29.0754.94
11-20 years ago7.3160.4718.21515.911
21-30 years ago6.9170.0.3.62410.513
31-40 years ago3.7230.0.2.4306.118
41-50 years ago1.2410.0.1.1452.330
over 50 years ago6.2170.4713.1259.714
total51.250.85047.4599.42
Eastern Pre-Alpsless than 10 years ago18.690.0.17.11035.76
11-20 years ago6.7170.21007.11614.011
21-30 years ago4.5210.21004.4219.114
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago3.8230.0.3.0266.817
total36.160.65835.6672.32
Northwestern Alpsless than 10 years ago6.5171.0458.81416.410
11-20 years ago5.1190.8507.31613.211
21-30 years ago2.4290.6583.8236.916
31-40 years ago2.2300.0.3.9226.217
41-50 years ago1.5380.21003.1254.820
over 50 years ago6.0180.8504.62011.513
total23.783.52431.7658.93
Central Alpsless than 10 years ago4.2201.4374.1209.812
11-20 years ago2.0310.6572.0314.520
21-30 years ago1.0450.0.0.4711.438
31-40 years ago0.8491.0441.2402.925
41-50 years ago0.8500.21000.7491.732
over 50 years ago3.3240.21001.6345.119
total12.1113.3249.91125.44
Northeastern Alpsless than 10 years ago2.7271.1416.51610.312
11-20 years ago1.6350.7503.2245.418
21-30 years ago1.1410.8512.1304.121
31-40 years ago1.0450.0.1.3382.329
41-50 years ago0.6590.31001.1412.031
over 50 years ago2.4270.4712.8255.617
total9.5133.32417.0829.85
Southwestern Alpsless than 10 years ago8.4151.04514.91124.48
11-20 years ago3.3240.9449.61413.911
21-30 years ago5.1200.8507.21613.112
31-40 years ago2.6280.6586.2179.414
41-50 years ago3.3251.7337.81512.812
over 50 years ago11.6132.03126.8840.36
total34.377.01672.53113.82
Southeastern Alpsless than 10 years ago18.5100.47122.6941.56
11-20 years ago11.7131.04517.41030.07
21-30 years ago10.1140.210010.21420.49
31-40 years ago4.8200.8505.21910.813
41-50 years ago2.3290.21003.5236.018
over 50 years ago16.2111.24116.61034.07
total63.553.82375.64142.82
Southern Alpsless than 10 years ago4.6211.04511.01316.611
11-20 years ago3.4240.4719.21412.912
21-30 years ago4.3211.04510.71316.011
31-40 years ago2.8270.6588.11511.513
41-50 years ago2.2300.8508.91512.012
over 50 years ago14.7117.11659.2581.04
total32.0710.813107.13150.02
Switzerlandless than 10 years ago348.027.616155.33510.81
11-20 years ago104.245.81876.35186.33
21-30 years ago69.354.02253.56126.94
31-40 years ago32.083.62335.5771.25
41-50 years ago18.4103.72331.2853.26
over 50 years ago73.2512.413124.53210.23
total645.2137.17476.311158.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861170/327501
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago65.841.24113.51180.54
11-20 years ago21.690.6584.52126.78
21-30 years ago15.4110.4714.92020.79
31-40 years ago5.6180.6581.3387.516
41-50 years ago1.5350.4710.9452.826
over 50 years ago3.3240.4712.9266.617
total113.323.42328.07144.81
Eastern Juraless than 10 years ago26.060.31003.32429.55
11-20 years ago7.7150.0.0.4718.115
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.4700.0.0.0.0.470
total40.330.31005.11945.72
Western Plateauless than 10 years ago29.850.0.3.62333.45
11-20 years ago5.4190.0.0.8506.217
21-30 years ago3.1240.0.0.0.3.124
31-40 years ago1.1440.0.0.21001.340
41-50 years ago1.3410.0.0.21001.538
over 50 years ago1.3400.0.0.21001.537
total42.030.0.5.01947.02
Central Plateauless than 10 years ago45.940.0.4.81950.73
11-20 years ago8.9140.21002.13011.312
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.6580.0.0.21000.850
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.8500.0.0.6581.338
total59.530.21009.21369.01
Eastern Plateauless than 10 years ago78.330.0.3.82282.13
11-20 years ago13.0110.0.1.24114.211
21-30 years ago5.6180.0.0.21005.818
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.21000.0.0.4710.658
total99.620.0.6.018105.61
Western Pre-Alpsless than 10 years ago7.5160.210011.71219.48
11-20 years ago3.1260.0.3.2236.317
21-30 years ago1.0450.0.3.5244.620
31-40 years ago1.5350.0.2.3273.821
41-50 years ago0.6570.0.1.4341.929
over 50 years ago1.9320.0.2.4304.322
total15.6100.210024.5740.33
Central Pre-Alpsless than 10 years ago25.380.0.28.2753.54
11-20 years ago7.1170.4718.21515.711
21-30 years ago6.7170.0.3.62410.314
31-40 years ago3.2250.0.2.4305.519
41-50 years ago1.0450.0.1.1452.132
over 50 years ago4.6200.4712.9268.015
total47.950.85046.4595.12
Eastern Pre-Alpsless than 10 years ago17.7100.0.17.11034.86
11-20 years ago5.6180.21006.71612.612
21-30 years ago3.9220.21004.2218.315
31-40 years ago1.6350.21002.2284.021
41-50 years ago0.8500.0.1.4382.230
over 50 years ago3.2250.0.2.6285.818
total32.960.65834.2667.73
Northwestern Alpsless than 10 years ago5.3191.0458.81415.210
11-20 years ago4.3210.6586.51711.312
21-30 years ago1.8330.6583.8236.317
31-40 years ago1.8330.0.3.9225.818
41-50 years ago0.8500.21002.9263.922
over 50 years ago3.6240.8504.2218.614
total17.6103.22530.2651.13
Central Alpsless than 10 years ago3.6221.4373.3238.313
11-20 years ago1.6340.6572.0314.120
21-30 years ago0.6580.0.0.4711.044
31-40 years ago0.8490.4701.2402.328
41-50 years ago0.8500.21000.4701.337
over 50 years ago2.1290.21001.6343.921
total9.5122.7268.71220.95
Northeastern Alpsless than 10 years ago2.5281.1416.3179.913
11-20 years ago1.2410.7503.0254.919
21-30 years ago1.1410.8512.1304.121
31-40 years ago0.8510.0.1.3382.130
41-50 years ago0.6590.31001.1412.031
over 50 years ago1.3380.4711.9313.522
total7.6153.32415.8926.65
Southwestern Alpsless than 10 years ago6.4171.04514.61121.99
11-20 years ago2.7270.9449.01412.712
21-30 years ago2.4290.6585.6188.615
31-40 years ago1.2410.6585.6187.416
41-50 years ago2.2301.7337.61611.512
over 50 years ago9.6142.03125.4836.96
total24.586.81667.7499.02
Southeastern Alpsless than 10 years ago16.2110.47120.9937.56
11-20 years ago9.2140.85016.31026.48
21-30 years ago7.1160.21008.01515.211
31-40 years ago3.1250.8505.2199.114
41-50 years ago1.9320.21003.3245.419
over 50 years ago13.0120.65814.01127.68
total50.652.92667.84121.32
Southern Alpsless than 10 years ago4.6211.0459.21414.811
11-20 years ago1.6350.4717.4169.414
21-30 years ago1.8331.0457.61610.413
31-40 years ago1.2410.6586.8178.615
41-50 years ago1.4380.8508.01510.214
over 50 years ago9.4145.91854.4569.74
total20.199.61493.33123.12
Switzerlandless than 10 years ago334.927.616149.13491.61
11-20 years ago93.145.31971.45169.83
21-30 years ago57.963.82345.96107.64
31-40 years ago25.493.12533.3861.75
41-50 years ago15.2123.72329.0847.86
over 50 years ago54.8610.714113.44178.83
total581.2134.17442.021057.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #861171/327502
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/an/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago246.0238.5720.797.51615.6114.820333.12
11-20 years ago65.1520.31013.0124.42112.1123.623118.44
21-30 years ago24.299.9147.8162.2309.2154.52157.86
31-40 years ago12.9126.9176.2185.5198.5158.31548.36
41-50 years ago7.5167.2163.2254.0226.8175.81834.48
over 50 years ago10.71320.71018.41020.5930.8826.58127.64
total366.71103.6469.3444.0683.0453.55720.11
inside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.6351.2413.4242.1300.8501.24110.314
11-20 years ago0.6580.6581.3380.6580.4710.6584.122
21-30 years ago0.4711.0450.8500.21000.4710.4713.225
31-40 years ago0.0.0.21000.8500.8500.6580.8503.225
41-50 years ago0.4710.0.0.4700.6580.6581.0452.926
over 50 years ago0.9451.5382.6283.4241.6357.81617.810
total3.9224.5219.3147.6164.42111.81341.57
outside perimetern/a0.0.0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago28.4845.7624.5816.31017.01012.512144.43
11-20 years ago10.61322.3915.61110.01316.3106.81781.75
21-30 years ago4.82012.3127.6167.41612.5129.01553.66
31-40 years ago3.8236.9175.1195.3199.9149.91440.97
41-50 years ago1.6356.2184.0226.6175.11911.21334.67
over 50 years ago5.51914.11211.51329.1719.8971.34151.23
total54.76107.5368.3474.7380.74120.72506.51
totaln/a0.4710.21000.0.0.0.0.0.0.0.0.658
less than 10 years ago276.0285.3448.6525.9833.4718.510487.81
11-20 years ago76.3543.2629.9714.91128.8811.013204.23
21-30 years ago29.4823.2916.2119.71422.1913.912114.54
31-40 years ago16.81114.01212.01211.61319.01019.01092.45
41-50 years ago9.51413.3127.61611.31312.41217.91072.05
over 50 years ago17.11136.3732.6752.9552.26105.63296.62
total425.31215.61146.92126.32168.02186.011268.10
© WSL, Swiss National Forest Inventory, 18.06.2020 #861172/327503
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago67.741.24113.91182.73
11-20 years ago23.190.6584.52128.28
21-30 years ago16.2100.4714.92021.59
31-40 years ago6.0180.6581.3387.915
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.2220.4712.9267.416
total118.623.42328.47150.51
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.4700.0.0.0.0.470
total41.230.31005.11946.62
Western Plateauless than 10 years ago30.650.0.3.62334.25
11-20 years ago5.8180.0.0.8506.617
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago1.5370.0.0.21001.735
total44.130.0.5.01949.12
Central Plateauless than 10 years ago46.140.0.4.81950.93
11-20 years ago9.1140.21002.13011.412
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.6580.0.0.21000.850
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.8500.0.0.6581.338
total59.920.21009.21369.31
Eastern Plateauless than 10 years ago79.830.0.3.82283.63
11-20 years ago13.2110.0.1.24114.411
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.21000.0.0.4710.658
total101.610.0.6.018107.61
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.3220.0.3.4237.715
21-30 years ago1.2410.0.4.0225.319
31-40 years ago1.7330.0.2.3274.020
41-50 years ago0.7500.0.1.4342.128
over 50 years ago2.6280.0.3.0275.619
total18.690.210025.8744.63
Central Pre-Alpsless than 10 years ago25.880.0.29.0754.94
11-20 years ago7.3160.4718.21515.911
21-30 years ago6.9170.0.3.62410.513
31-40 years ago3.7230.0.2.4306.118
41-50 years ago1.2410.0.1.1452.330
over 50 years ago6.9160.4713.12510.513
total52.050.85047.45100.22
Eastern Pre-Alpsless than 10 years ago18.690.0.17.11035.76
11-20 years ago6.7170.21007.41614.311
21-30 years ago4.7200.21004.4219.314
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago4.2220.0.3.0267.216
total36.760.65835.8673.22
Northwestern Alpsless than 10 years ago6.7171.0458.81416.610
11-20 years ago5.1190.8507.31613.211
21-30 years ago2.8270.6583.8237.316
31-40 years ago3.0250.0.3.9227.016
41-50 years ago1.9330.21003.1255.219
over 50 years ago7.6160.8504.62013.112
total27.183.52431.7662.33
Central Alpsless than 10 years ago4.2201.4374.1209.812
11-20 years ago2.6270.6572.2295.318
21-30 years ago1.4380.0.0.6582.032
31-40 years ago0.8491.0441.2402.925
41-50 years ago1.4380.21000.7492.328
over 50 years ago4.7200.4702.2297.316
total15.1103.52310.91129.64
Northeastern Alpsless than 10 years ago2.9261.1416.51610.512
11-20 years ago2.2300.7503.2246.017
21-30 years ago1.7330.8512.1304.720
31-40 years ago1.2410.0.1.3382.528
41-50 years ago1.0450.31001.1412.429
over 50 years ago5.2190.4712.8258.314
total14.1103.32417.0834.54
Southwestern Alpsless than 10 years ago8.6151.04514.91124.68
11-20 years ago3.3240.9449.61413.911
21-30 years ago6.5170.8507.21614.511
31-40 years ago3.6230.6586.61710.813
41-50 years ago5.1201.7337.81514.611
over 50 years ago13.2122.23026.8842.16
total40.467.21672.93120.52
Southeastern Alpsless than 10 years ago18.5100.47122.8941.76
11-20 years ago12.1131.04517.61030.67
21-30 years ago10.7130.47110.61321.79
31-40 years ago7.6160.8505.41913.812
41-50 years ago5.5190.21004.1229.814
over 50 years ago26.181.24117.01044.36
total80.444.02277.64162.02
Southern Alpsless than 10 years ago5.2191.04511.21317.310
11-20 years ago5.0200.4719.41414.711
21-30 years ago7.7161.04511.91320.69
31-40 years ago5.4190.6589.11415.011
41-50 years ago4.4210.85010.11415.311
over 50 years ago17.3107.31662.2586.74
total44.9611.013113.83169.72
Switzerlandless than 10 years ago349.427.616155.73512.61
11-20 years ago107.645.81877.15190.53
21-30 years ago76.554.22255.36136.04
31-40 years ago39.473.62337.1780.25
41-50 years ago26.993.72332.9863.55
over 50 years ago94.9413.012128.73236.72
total694.8137.97486.711219.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861173/327504
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago68.141.24114.11183.33
11-20 years ago23.590.6584.72028.88
21-30 years ago16.8100.4714.92022.19
31-40 years ago6.0180.6581.3387.915
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.4210.4712.9267.616
total120.223.42328.97152.51
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.4700.0.0.0.0.470
total41.230.31005.11946.62
Western Plateauless than 10 years ago30.850.0.3.82334.65
11-20 years ago6.2170.0.0.8507.016
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago1.5370.0.0.21001.735
total44.730.0.5.21949.92
Central Plateauless than 10 years ago46.740.0.4.81951.53
11-20 years ago9.3140.21002.13011.612
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.8500.0.0.21001.045
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.8500.0.0.6581.338
total60.920.21009.21370.31
Eastern Plateauless than 10 years ago79.930.0.3.82283.83
11-20 years ago13.4110.0.1.24114.611
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.4710.0.0.4710.850
total102.110.0.6.018108.11
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.3220.0.3.4237.715
21-30 years ago1.0450.0.4.0225.120
31-40 years ago1.7330.0.2.5264.220
41-50 years ago0.7500.0.1.4342.128
over 50 years ago2.3290.0.3.1275.419
total18.290.210026.1644.43
Central Pre-Alpsless than 10 years ago26.280.0.29.7755.94
11-20 years ago7.3160.4718.21515.911
21-30 years ago6.9170.0.3.62410.513
31-40 years ago3.7230.0.2.4306.118
41-50 years ago1.2410.0.1.3412.529
over 50 years ago6.2170.4713.1259.714
total51.650.85048.25100.62
Eastern Pre-Alpsless than 10 years ago18.790.0.17.61036.36
11-20 years ago6.7170.21007.31614.211
21-30 years ago4.5210.21004.5209.314
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago4.1220.0.3.2257.216
total36.660.65836.6573.82
Northwestern Alpsless than 10 years ago6.7171.0459.21417.010
11-20 years ago5.3190.8507.31613.411
21-30 years ago2.4290.6583.8236.916
31-40 years ago2.2300.0.4.1226.417
41-50 years ago1.5380.21003.3244.920
over 50 years ago6.8170.8504.62012.312
total24.983.52432.5660.93
Central Alpsless than 10 years ago4.9191.4374.12010.411
11-20 years ago2.0310.6572.0314.520
21-30 years ago1.0450.0.0.4711.438
31-40 years ago0.8491.0441.2402.925
41-50 years ago0.8500.21000.7491.732
over 50 years ago3.3240.21001.6345.119
total12.7103.3249.91126.04
Northeastern Alpsless than 10 years ago2.9261.1416.51610.512
11-20 years ago1.8330.7503.4235.817
21-30 years ago1.1410.8512.1304.121
31-40 years ago1.0450.0.1.3382.329
41-50 years ago0.6590.31001.1412.031
over 50 years ago2.4270.4713.0245.817
total9.8133.32417.4830.64
Southwestern Alpsless than 10 years ago8.4151.04514.91124.48
11-20 years ago3.3240.9449.61413.911
21-30 years ago5.1200.8507.21613.112
31-40 years ago3.0260.6586.2179.814
41-50 years ago3.5241.7337.81513.012
over 50 years ago12.0132.03126.8840.76
total35.377.01672.53114.82
Southeastern Alpsless than 10 years ago18.7100.65822.8942.16
11-20 years ago11.9131.04517.41030.27
21-30 years ago10.3140.210010.61321.09
31-40 years ago5.2190.8505.21911.213
41-50 years ago2.3290.21003.5236.018
over 50 years ago16.8101.24117.01035.07
total65.154.02276.54145.62
Southern Alpsless than 10 years ago4.8201.04511.01316.710
11-20 years ago3.6230.4719.21413.112
21-30 years ago4.3211.04511.31316.610
31-40 years ago2.8270.6588.11511.513
41-50 years ago2.4290.8508.91512.212
over 50 years ago15.7117.31660.6583.54
total33.6711.013109.13153.72
Switzerlandless than 10 years ago351.527.816157.33516.61
11-20 years ago106.445.81876.95189.13
21-30 years ago70.154.02254.66128.84
31-40 years ago33.083.62335.9772.55
41-50 years ago18.8103.72331.5854.06
over 50 years ago77.1512.612127.03216.73
total657.0137.57483.211177.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #861174/327505
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago68.141.24114.11183.33
11-20 years ago23.590.6584.72028.88
21-30 years ago16.8100.4714.92022.19
31-40 years ago6.0180.6581.3387.915
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.4210.4712.9267.616
total120.223.42328.97152.51
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.4700.0.0.0.0.470
total41.230.31005.11946.62
Western Plateauless than 10 years ago30.850.0.3.82334.65
11-20 years ago6.2170.0.0.8507.016
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago1.5370.0.0.21001.735
total44.730.0.5.21949.92
Central Plateauless than 10 years ago46.740.0.4.81951.53
11-20 years ago9.3140.21002.13011.612
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.8500.0.0.21001.045
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.8500.0.0.6581.338
total60.920.21009.21370.31
Eastern Plateauless than 10 years ago79.930.0.3.82283.83
11-20 years ago13.4110.0.1.24114.611
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.4710.0.0.4710.850
total102.110.0.6.018108.11
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.5210.0.3.4237.915
21-30 years ago1.2410.0.4.0225.319
31-40 years ago1.7330.0.2.5264.220
41-50 years ago0.7500.0.1.4342.128
over 50 years ago2.8270.0.3.3266.118
total19.090.210026.3645.53
Central Pre-Alpsless than 10 years ago26.280.0.29.7755.94
11-20 years ago7.3160.4718.21515.911
21-30 years ago6.9170.0.3.62410.513
31-40 years ago3.7230.0.2.4306.118
41-50 years ago1.2410.0.1.3412.529
over 50 years ago6.9160.4713.12510.513
total52.450.85048.25101.42
Eastern Pre-Alpsless than 10 years ago18.790.0.17.61036.36
11-20 years ago6.7170.21007.51614.411
21-30 years ago4.7200.21004.5209.514
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago4.5210.0.3.2257.616
total37.260.65836.8574.62
Northwestern Alpsless than 10 years ago6.9171.0459.21417.210
11-20 years ago5.3190.8507.31613.411
21-30 years ago2.8270.6583.8237.316
31-40 years ago3.0250.0.4.1227.216
41-50 years ago1.9330.21003.3245.319
over 50 years ago8.2150.8504.62013.712
total28.173.52432.5664.13
Central Alpsless than 10 years ago4.9191.4374.12010.411
11-20 years ago2.6270.6572.2295.318
21-30 years ago1.4380.0.0.6582.032
31-40 years ago0.8491.0441.2402.925
41-50 years ago1.4380.21000.7492.328
over 50 years ago4.9190.4702.2297.515
total15.993.52310.91130.44
Northeastern Alpsless than 10 years ago3.1251.1416.51610.712
11-20 years ago2.4290.7503.4236.416
21-30 years ago1.7330.8512.1304.720
31-40 years ago1.2410.0.1.3382.528
41-50 years ago1.0450.31001.1412.429
over 50 years ago5.2190.4713.0248.514
total14.5103.32417.4835.24
Southwestern Alpsless than 10 years ago8.6151.04514.91124.68
11-20 years ago3.3240.9449.61413.911
21-30 years ago6.5170.8507.21614.511
31-40 years ago3.8230.6586.61711.013
41-50 years ago5.3191.7337.81514.811
over 50 years ago13.6122.23026.8842.56
total41.267.21672.93121.32
Southeastern Alpsless than 10 years ago18.7100.65822.8942.16
11-20 years ago12.5121.04517.61031.07
21-30 years ago10.9130.47111.01322.29
31-40 years ago8.0160.8505.41914.211
41-50 years ago5.5190.21004.32110.014
over 50 years ago26.781.24117.41045.36
total82.344.22278.54164.92
Southern Alpsless than 10 years ago5.4191.04511.21317.510
11-20 years ago5.2190.4719.41414.911
21-30 years ago7.7161.04512.31221.09
31-40 years ago5.4190.6589.11415.011
41-50 years ago4.6210.85010.11415.511
over 50 years ago18.0107.51663.0588.54
total46.2611.213115.03172.42
Switzerlandless than 10 years ago352.727.816157.53518.01
11-20 years ago110.045.81877.75193.53
21-30 years ago77.354.22256.26137.84
31-40 years ago40.373.62337.4781.35
41-50 years ago27.393.72333.4864.55
over 50 years ago98.4413.212130.53242.12
total706.0138.37492.911237.21
© WSL, Swiss National Forest Inventory, 18.06.2020 #861175/327506
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago66.941.23814.01182.13
11-20 years ago23.080.5584.61928.17
21-30 years ago18.690.3714.42023.38
31-40 years ago5.8170.5581.2387.515
41-50 years ago1.6330.3710.9452.825
over 50 years ago5.0190.3713.1238.514
total120.823.32328.27152.31
Eastern Juraless than 10 years ago26.360.21003.22429.85
11-20 years ago7.6150.0.0.7508.314
21-30 years ago4.0210.0.0.6584.519
31-40 years ago1.0440.0.0.4701.437
41-50 years ago1.8330.0.0.4702.230
over 50 years ago0.4700.0.0.0.0.470
total41.030.21005.21846.52
Western Plateauless than 10 years ago30.650.0.3.62234.24
11-20 years ago5.9170.0.0.7506.716
21-30 years ago3.6210.0.0.21003.820
31-40 years ago1.5370.0.0.21001.635
41-50 years ago1.3380.0.0.21001.535
over 50 years ago1.5350.0.0.21001.733
total44.530.0.5.01849.62
Central Plateauless than 10 years ago46.240.0.5.01851.23
11-20 years ago9.5130.21001.93011.511
21-30 years ago3.8210.0.1.7315.517
31-40 years ago0.7500.0.0.3701.041
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.7500.0.0.5581.238
total60.920.21009.61270.71
Eastern Plateauless than 10 years ago78.930.0.4.02082.92
11-20 years ago13.5110.0.1.14114.610
21-30 years ago5.9170.0.0.4716.316
31-40 years ago1.9300.0.0.21002.129
41-50 years ago0.7500.0.0.21000.945
over 50 years ago0.4710.0.0.3710.750
total101.310.0.6.116107.51
Western Pre-Alpsless than 10 years ago8.2140.37111.01119.57
11-20 years ago4.0210.0.4.4198.413
21-30 years ago0.9450.0.3.9214.719
31-40 years ago1.7320.0.2.4254.119
41-50 years ago0.7500.0.1.8302.425
over 50 years ago2.0290.0.3.0255.118
total17.580.37126.5644.33
Central Pre-Alpsless than 10 years ago25.380.210029.9755.44
11-20 years ago7.1160.5588.01415.710
21-30 years ago7.5150.21003.42311.112
31-40 years ago3.5220.0.2.3295.817
41-50 years ago1.1410.0.1.5352.627
over 50 years ago5.7170.6583.3239.613
total50.151.53548.55100.22
Eastern Pre-Alpsless than 10 years ago17.890.0.17.8935.66
11-20 years ago6.3170.21007.51414.010
21-30 years ago5.0180.21004.6199.813
31-40 years ago2.1290.21002.3264.619
41-50 years ago0.9450.0.1.6332.627
over 50 years ago3.7220.0.3.6217.315
total35.860.55837.4573.72
Northwestern Alpsless than 10 years ago6.0170.9459.61316.59
11-20 years ago4.7190.7507.41512.911
21-30 years ago2.6260.7504.3207.714
31-40 years ago2.4270.0.4.1206.516
41-50 years ago1.4350.21003.0244.619
over 50 years ago6.3170.7504.81911.912
total23.483.22333.4560.03
Central Alpsless than 10 years ago4.9181.7334.11910.611
11-20 years ago1.8310.5582.1294.419
21-30 years ago0.9450.0.0.3711.338
31-40 years ago1.1400.9441.3383.223
41-50 years ago0.7500.21000.7491.632
over 50 years ago3.5220.21001.7325.417
total12.8103.42210.21126.44
Northeastern Alpsless than 10 years ago3.2231.0416.51610.711
11-20 years ago1.7320.6503.2225.616
21-30 years ago1.2380.7512.3274.219
31-40 years ago0.9450.0.1.2382.129
41-50 years ago0.8500.21001.0412.030
over 50 years ago3.0230.4712.8246.115
total10.8113.02416.9830.74
Southwestern Alpsless than 10 years ago8.2140.94514.91024.08
11-20 years ago3.9210.9449.31314.011
21-30 years ago5.3180.7507.01513.011
31-40 years ago3.8220.5586.81611.112
41-50 years ago3.2231.5337.51512.211
over 50 years ago12.4122.12925.8740.36
total36.866.61671.33114.72
Southeastern Alpsless than 10 years ago17.7100.55823.0841.36
11-20 years ago12.0121.14116.51029.67
21-30 years ago10.4130.210010.81221.49
31-40 years ago5.3180.7505.31811.212
41-50 years ago2.7260.21003.3236.217
over 50 years ago17.0101.23817.21035.56
total65.143.92176.14145.12
Southern Alpsless than 10 years ago4.5201.23812.31218.09
11-20 years ago3.2230.4718.41411.912
21-30 years ago4.6190.94511.11216.510
31-40 years ago2.9250.7508.11411.712
41-50 years ago2.2290.7509.21412.112
over 50 years ago15.5107.31559.9482.73
total32.8711.112109.02152.92
Switzerlandless than 10 years ago344.828.215158.93511.91
11-20 years ago104.145.61875.95185.63
21-30 years ago74.354.02154.96133.13
31-40 years ago34.573.52236.0774.05
41-50 years ago19.0103.32331.4753.76
over 50 years ago77.1512.912126.23216.22
total653.8137.47483.411174.60
© WSL, Swiss National Forest Inventory, 18.06.2020 #861176/327507
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest
grid: terrestrial grid NFI3
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago66.941.23814.01182.13
11-20 years ago23.080.5584.61928.17
21-30 years ago18.690.3714.42023.38
31-40 years ago5.8170.5581.2387.515
41-50 years ago1.6330.3710.9452.825
over 50 years ago5.0190.3713.1238.514
total120.823.32328.27152.31
Eastern Juraless than 10 years ago26.360.21003.22429.85
11-20 years ago7.6150.0.0.7508.314
21-30 years ago4.0210.0.0.6584.519
31-40 years ago1.0440.0.0.4701.437
41-50 years ago1.8330.0.0.4702.230
over 50 years ago0.4700.0.0.0.0.470
total41.030.21005.21846.52
Western Plateauless than 10 years ago30.650.0.3.62234.24
11-20 years ago5.9170.0.0.7506.716
21-30 years ago3.6210.0.0.21003.820
31-40 years ago1.5370.0.0.21001.635
41-50 years ago1.3380.0.0.21001.535
over 50 years ago1.5350.0.0.21001.733
total44.530.0.5.01849.62
Central Plateauless than 10 years ago46.240.0.5.01851.23
11-20 years ago9.5130.21001.93011.511
21-30 years ago3.8210.0.1.7315.517
31-40 years ago0.7500.0.0.3701.041
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.7500.0.0.5581.238
total60.920.21009.61270.71
Eastern Plateauless than 10 years ago78.930.0.4.02082.92
11-20 years ago13.5110.0.1.14114.610
21-30 years ago5.9170.0.0.4716.316
31-40 years ago1.9300.0.0.21002.129
41-50 years ago0.7500.0.0.21000.945
over 50 years ago0.4710.0.0.3710.750
total101.310.0.6.116107.51
Western Pre-Alpsless than 10 years ago8.2140.37111.01119.57
11-20 years ago4.2200.0.4.4198.613
21-30 years ago1.1410.0.3.9214.919
31-40 years ago1.7320.0.2.4254.119
41-50 years ago0.7500.0.1.8302.425
over 50 years ago2.4270.0.3.2245.717
total18.280.37126.7645.33
Central Pre-Alpsless than 10 years ago25.380.210029.9755.44
11-20 years ago7.3150.5588.01415.810
21-30 years ago7.5150.21003.42311.112
31-40 years ago3.5220.0.2.3295.817
41-50 years ago1.1410.0.1.5352.627
over 50 years ago6.5160.6583.32310.512
total51.251.53548.55101.22
Eastern Pre-Alpsless than 10 years ago17.890.0.17.8935.66
11-20 years ago6.3170.21007.71414.210
21-30 years ago5.1180.21004.61910.013
31-40 years ago2.1290.21002.3264.619
41-50 years ago0.9450.0.1.6332.627
over 50 years ago4.1210.0.3.6217.615
total36.360.55837.6574.52
Northwestern Alpsless than 10 years ago6.1160.9459.61316.79
11-20 years ago4.7190.7507.41512.911
21-30 years ago3.2230.7504.3208.214
31-40 years ago3.1240.0.4.1207.215
41-50 years ago1.8310.21003.0244.918
over 50 years ago8.1150.7504.81913.611
total27.073.22333.4563.53
Central Alpsless than 10 years ago4.9181.7334.11910.611
11-20 years ago2.3270.5582.2285.118
21-30 years ago1.6330.0.0.5582.129
31-40 years ago1.2370.9441.3383.422
41-50 years ago1.4350.21000.7492.327
over 50 years ago4.9180.4702.2287.515
total16.493.62211.01031.04
Northeastern Alpsless than 10 years ago3.4221.0416.51610.911
11-20 years ago2.3280.6503.2226.116
21-30 years ago2.1290.7512.3275.118
31-40 years ago1.1410.0.1.2382.328
41-50 years ago1.1410.21001.0412.327
over 50 years ago5.7170.4713.0239.013
total15.693.02417.0835.64
Southwestern Alpsless than 10 years ago8.4140.94514.91024.18
11-20 years ago3.9210.9449.31314.011
21-30 years ago6.8160.7507.01514.511
31-40 years ago4.7190.5587.11512.412
41-50 years ago4.9191.5337.51513.911
over 50 years ago14.2112.32825.8742.35
total42.766.81671.63121.22
Southeastern Alpsless than 10 years ago17.7100.55823.0841.36
11-20 years ago12.7121.14116.71030.57
21-30 years ago11.1120.47111.11222.68
31-40 years ago8.3140.7505.41814.511
41-50 years ago5.8170.21004.02110.013
over 50 years ago26.581.43517.8945.66
total82.244.32078.03164.52
Southern Alpsless than 10 years ago5.0191.23812.51218.79
11-20 years ago4.8190.4718.51413.711
21-30 years ago7.8150.94512.21220.89
31-40 years ago5.2180.7509.01414.911
41-50 years ago4.1210.75010.31315.111
over 50 years ago18.097.51562.3487.83
total44.9611.312114.82171.01
Switzerlandless than 10 years ago345.828.215159.13513.11
11-20 years ago107.945.61876.65190.13
21-30 years ago82.154.12156.55142.73
31-40 years ago41.863.52237.5782.74
41-50 years ago27.283.32333.1763.65
over 50 years ago98.3413.611130.13242.02
total703.1138.37492.911234.31
© WSL, Swiss National Forest Inventory, 18.06.2020 #861177/327508
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: forest
grid: terrestrial grid NFI3
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago66.941.23814.21182.33
11-20 years ago23.080.5584.61928.17
21-30 years ago18.690.3714.42023.38
31-40 years ago5.9170.5581.2387.715
41-50 years ago1.8310.3710.9453.024
over 50 years ago5.4180.3713.1238.914
total121.623.32328.47153.21
Eastern Juraless than 10 years ago26.360.21003.22429.85
11-20 years ago7.6150.0.0.7508.314
21-30 years ago4.0210.0.0.6584.519
31-40 years ago1.0440.0.0.4701.437
41-50 years ago1.8330.0.0.4702.230
over 50 years ago0.6570.0.0.0.0.657
total41.230.21005.21846.72
Western Plateauless than 10 years ago30.650.0.3.62234.24
11-20 years ago6.1170.0.0.7506.816
21-30 years ago3.6210.0.0.21003.820
31-40 years ago1.5370.0.0.21001.635
41-50 years ago1.3380.0.0.21001.535
over 50 years ago2.1300.0.0.21002.329
total45.330.0.5.01850.32
Central Plateauless than 10 years ago46.440.0.5.01851.43
11-20 years ago9.5130.21001.93011.511
21-30 years ago3.8210.0.1.7315.517
31-40 years ago0.7500.0.0.3701.041
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago0.9450.0.0.7501.633
total61.320.21009.81271.21
Eastern Plateauless than 10 years ago78.930.0.4.02082.92
11-20 years ago13.5110.0.1.14114.610
21-30 years ago5.9170.0.0.4716.316
31-40 years ago1.9300.0.0.21002.129
41-50 years ago0.7500.0.0.21000.945
over 50 years ago0.4710.0.0.3710.750
total101.310.0.6.116107.51
Western Pre-Alpsless than 10 years ago8.2140.37111.01119.57
11-20 years ago4.2200.0.4.4198.613
21-30 years ago1.1410.0.3.9214.919
31-40 years ago1.7320.0.2.4254.119
41-50 years ago0.7500.0.1.8302.425
over 50 years ago3.3230.0.3.4236.715
total19.180.37126.9646.32
Central Pre-Alpsless than 10 years ago25.380.210030.1755.64
11-20 years ago7.3150.5588.41416.210
21-30 years ago7.7150.21003.62311.512
31-40 years ago3.5220.0.2.5276.017
41-50 years ago1.1410.0.1.7332.826
over 50 years ago8.5140.6583.72212.811
total53.441.53549.94104.81
Eastern Pre-Alpsless than 10 years ago17.890.0.17.9935.86
11-20 years ago6.3170.21008.11414.610
21-30 years ago5.1180.21004.81810.212
31-40 years ago2.1290.21002.3264.619
41-50 years ago0.9450.0.1.6332.627
over 50 years ago4.8190.0.4.1208.913
total37.160.55838.9576.52
Northwestern Alpsless than 10 years ago6.5160.9459.81217.29
11-20 years ago4.7190.7507.61513.110
21-30 years ago3.3230.7504.3208.414
31-40 years ago3.1240.0.4.1207.215
41-50 years ago2.1290.21003.5225.817
over 50 years ago10.9120.7505.51717.110
total30.673.22334.9568.72
Central Alpsless than 10 years ago4.9181.8314.11910.811
11-20 years ago2.3270.5582.6265.517
21-30 years ago2.0300.0.0.5582.527
31-40 years ago1.2370.9441.3383.422
41-50 years ago1.4350.21001.1402.625
over 50 years ago6.6160.9442.4279.912
total18.484.41911.91034.73
Northeastern Alpsless than 10 years ago3.4221.0416.81511.311
11-20 years ago2.3280.6503.4226.315
21-30 years ago2.1290.7512.3275.118
31-40 years ago1.1410.0.1.4352.427
41-50 years ago1.1410.21001.0412.327
over 50 years ago6.3161.5354.22012.011
total16.294.12019.0739.33
Southwestern Alpsless than 10 years ago8.4140.94514.91024.18
11-20 years ago3.9210.9449.31314.011
21-30 years ago6.8160.7507.01514.511
31-40 years ago4.9190.5587.11512.511
41-50 years ago5.9171.5338.01415.510
over 50 years ago16.7102.72627.6746.95
total46.457.21573.93127.52
Southeastern Alpsless than 10 years ago17.7100.75023.0841.56
11-20 years ago12.7121.14116.71030.57
21-30 years ago11.3120.47111.71223.48
31-40 years ago8.3140.7505.61714.611
41-50 years ago5.8170.21004.02110.013
over 50 years ago28.771.63319.8950.25
total84.644.61980.83170.12
Southern Alpsless than 10 years ago5.0191.23812.81119.19
11-20 years ago5.0190.4718.51413.911
21-30 years ago8.3140.94512.31221.59
31-40 years ago5.5180.7509.61315.810
41-50 years ago5.3180.75010.51316.510
over 50 years ago24.588.01568.14100.63
total53.7511.812121.92187.41
Switzerlandless than 10 years ago346.328.614160.53515.41
11-20 years ago108.245.61878.15191.93
21-30 years ago83.644.12157.65145.33
31-40 years ago42.563.52238.6784.64
41-50 years ago29.983.32334.9768.25
over 50 years ago119.6416.310143.13279.12
total730.2141.46512.711284.30
© WSL, Swiss National Forest Inventory, 18.06.2020 #861178/327509
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago67.041.14113.71181.94
11-20 years ago21.790.6584.62026.98
21-30 years ago9.8140.4712.52712.712
31-40 years ago6.4170.0.2.4298.914
41-50 years ago4.4210.4711.0445.818
over 50 years ago3.9220.9453.8228.714
total113.323.42328.07144.81
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago22.970.31002.33025.56
11-20 years ago10.7120.0.1.63512.411
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago1.7340.0.0.4712.231
total40.330.31005.11945.72
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago26.860.0.3.62330.45
11-20 years ago7.2160.0.0.6577.815
21-30 years ago3.7230.0.0.21003.923
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.9500.0.0.4701.340
over 50 years ago1.5370.0.0.0.1.537
total42.030.0.5.01947.02
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago47.540.21005.21852.83
11-20 years ago9.3130.0.2.13011.512
21-30 years ago1.4370.0.0.8502.130
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.4701.241
total59.530.21009.21369.01
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago75.230.0.3.52378.73
11-20 years ago15.0110.0.1.04516.010
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago0.8500.0.0.5581.338
total99.620.0.6.018105.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.7170.210010.01316.99
11-20 years ago3.4240.0.5.3198.714
21-30 years ago1.6360.0.2.4274.021
31-40 years ago1.0450.0.2.3283.224
41-50 years ago1.2410.0.1.6332.825
over 50 years ago1.7340.0.2.9274.621
total15.6100.210024.5740.33
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago23.480.210023.9847.55
11-20 years ago11.5130.0.11.31322.99
21-30 years ago3.0260.21004.1227.316
31-40 years ago3.7230.0.1.8355.519
41-50 years ago2.3290.0.1.5383.823
over 50 years ago3.9220.4713.8238.115
total47.950.85046.4595.12
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago15.0110.47115.21030.67
11-20 years ago7.9150.21008.31516.410
21-30 years ago2.8270.0.3.1256.018
31-40 years ago2.1300.0.2.9265.019
41-50 years ago1.6350.0.1.9313.523
over 50 years ago3.5240.0.2.8266.218
total32.960.65834.2667.73
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago5.8180.85011.11317.79
11-20 years ago2.8260.6584.2217.615
21-30 years ago2.7270.6584.9208.115
31-40 years ago1.2410.21002.5293.922
41-50 years ago1.6350.0.2.9264.520
over 50 years ago3.6241.0454.7209.314
total17.6103.22530.2651.13
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.1291.4372.3285.817
11-20 years ago1.9310.21002.3284.419
21-30 years ago1.4360.4711.4373.223
31-40 years ago0.8500.21000.6571.535
41-50 years ago0.6560.4700.6581.535
over 50 years ago2.7250.21001.6344.419
total9.5122.7268.71220.95
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.0301.3415.4188.814
11-20 years ago1.5360.7493.6225.817
21-30 years ago1.3410.3712.1303.722
31-40 years ago0.5560.3701.0451.831
41-50 years ago0.4720.0.1.1451.537
over 50 years ago1.8330.6592.6265.119
total7.6153.32415.8926.65
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.6212.13015.41122.19
11-20 years ago3.5230.65810.01314.111
21-30 years ago1.6350.21006.6178.315
31-40 years ago2.0310.6583.9226.517
41-50 years ago1.8330.6585.6188.015
over 50 years ago11.0132.82726.3840.06
total24.586.81667.7499.02
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago14.0110.65814.21128.98
11-20 years ago10.0140.47115.61126.08
21-30 years ago6.1180.210011.51317.910
31-40 years ago4.7200.4717.11612.212
41-50 years ago2.8270.6584.7208.015
over 50 years ago13.0120.75014.61128.48
total50.652.92667.84121.32
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago3.8231.24110.81315.811
11-20 years ago2.6280.6585.6198.915
21-30 years ago1.0450.4716.7178.015
31-40 years ago1.8330.8505.4198.015
41-50 years ago1.7350.6588.81511.013
over 50 years ago9.3146.11856.0571.44
total20.199.61493.33123.12
Switzerlandn/a0.4710.0.0.0.0.471
less than 10 years ago316.929.914136.64463.42
11-20 years ago109.243.82276.25189.23
21-30 years ago44.872.62747.5694.94
31-40 years ago29.982.52831.2863.65
41-50 years ago20.9102.52830.1853.56
over 50 years ago59.2612.812120.44192.43
total581.2134.17442.021057.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #861179/327510
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago67.741.24114.11182.93
11-20 years ago23.190.6584.52128.28
21-30 years ago16.2100.4714.92021.59
31-40 years ago6.2170.6581.3388.115
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.6210.4712.9267.815
total119.223.42328.67151.31
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.6570.0.0.0.0.657
total41.430.31005.11946.82
Western Plateauless than 10 years ago30.650.0.3.62334.25
11-20 years ago5.8180.0.0.8506.617
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago2.2310.0.0.21002.430
total44.730.0.5.01949.72
Central Plateauless than 10 years ago46.540.0.4.81951.33
11-20 years ago9.1140.21002.13011.412
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.6580.0.0.21000.850
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago1.0450.0.0.8501.733
total60.520.21009.41370.11
Eastern Plateauless than 10 years ago79.830.0.3.82283.63
11-20 years ago13.2110.0.1.24114.411
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.21000.0.0.4710.658
total101.610.0.6.018107.61
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.5210.0.3.4237.915
21-30 years ago1.2410.0.4.0225.319
31-40 years ago1.7330.0.2.3274.020
41-50 years ago0.7500.0.1.4342.128
over 50 years ago3.1250.0.3.5256.617
total19.490.210026.3645.83
Central Pre-Alpsless than 10 years ago25.880.0.29.5755.34
11-20 years ago7.3160.4718.41516.110
21-30 years ago6.9170.0.3.82310.713
31-40 years ago3.7230.0.2.6296.318
41-50 years ago1.2410.0.1.5382.728
over 50 years ago8.8150.4713.32412.512
total53.850.85049.05103.62
Eastern Pre-Alpsless than 10 years ago18.690.0.17.11035.76
11-20 years ago6.7170.21007.81514.711
21-30 years ago4.7200.21004.5209.514
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago4.9200.0.3.5238.415
total37.460.65837.0575.02
Northwestern Alpsless than 10 years ago6.9171.0459.01417.010
11-20 years ago5.1190.8507.51613.411
21-30 years ago3.0260.6583.8237.516
31-40 years ago3.0250.0.3.9227.016
41-50 years ago2.0310.21003.3245.519
over 50 years ago10.0140.8505.01915.911
total30.173.52432.7666.33
Central Alpsless than 10 years ago4.2201.6354.1209.912
11-20 years ago2.6270.6572.5275.717
21-30 years ago1.8330.0.0.6582.429
31-40 years ago0.8491.0441.2402.925
41-50 years ago1.4380.21001.1402.726
over 50 years ago6.3171.0442.4289.713
total17.194.32011.91033.34
Northeastern Alpsless than 10 years ago2.9261.1417.01611.012
11-20 years ago2.2300.7503.3236.216
21-30 years ago1.7330.8512.1304.720
31-40 years ago1.2410.0.1.5352.727
41-50 years ago1.0450.31001.1412.429
over 50 years ago5.9171.4384.12111.412
total14.9104.32019.2738.43
Southwestern Alpsless than 10 years ago8.6151.04514.91124.68
11-20 years ago3.3240.9449.61413.911
21-30 years ago6.5170.8507.21614.511
31-40 years ago3.8230.6586.61711.113
41-50 years ago6.3181.7338.21516.211
over 50 years ago15.4112.62828.1746.15
total44.067.61674.73126.32
Southeastern Alpsless than 10 years ago18.5100.65822.8941.96
11-20 years ago12.1131.04517.61030.67
21-30 years ago10.9130.47111.41322.69
31-40 years ago7.6160.8505.71814.012
41-50 years ago5.5190.21004.1229.814
over 50 years ago28.581.43819.21049.06
total83.044.42180.74168.02
Southern Alpsless than 10 years ago5.2191.04511.61317.710
11-20 years ago5.2190.4719.41414.911
21-30 years ago8.1151.04512.11221.29
31-40 years ago5.8180.6589.71416.011
41-50 years ago5.6190.85010.31416.711
over 50 years ago23.898.01567.7499.53
total53.5511.813120.72186.01
Switzerlandless than 10 years ago350.028.016157.33515.21
11-20 years ago108.045.81878.65192.33
21-30 years ago77.754.22256.66138.54
31-40 years ago40.373.62338.3782.25
41-50 years ago29.583.72334.5767.75
over 50 years ago115.2416.111141.03272.32
total720.6141.37506.411268.30
© WSL, Swiss National Forest Inventory, 18.06.2020 #861180/327511
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago69.741.14113.71184.63
11-20 years ago23.590.6585.21929.37
21-30 years ago10.8130.4712.52713.711
31-40 years ago7.3160.0.2.4299.714
41-50 years ago4.6200.4711.0446.018
over 50 years ago4.7200.9453.8229.514
total120.623.42328.67152.71
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago24.270.31002.33026.76
11-20 years ago11.1120.0.1.63512.711
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago1.7340.0.0.4712.231
total42.030.31005.11947.42
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.860.0.3.62331.45
11-20 years ago7.4160.0.0.6578.015
21-30 years ago4.1220.0.0.21004.322
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago1.7350.0.0.0.1.735
total44.330.0.5.01949.22
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago48.040.21005.21853.43
11-20 years ago9.3130.0.2.13011.512
21-30 years ago1.4370.0.0.8502.130
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.6571.437
total60.020.21009.41369.71
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago77.530.0.3.52381.03
11-20 years ago15.7100.0.1.04516.710
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago1.0450.0.0.5581.635
total102.910.0.6.018108.91
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3160.210010.21317.79
11-20 years ago4.1220.0.5.3199.414
21-30 years ago2.8270.0.2.6265.418
31-40 years ago1.0450.0.2.5273.523
41-50 years ago1.4380.0.1.6333.024
over 50 years ago1.7340.0.3.3255.120
total18.490.210025.6744.23
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago25.280.210024.3849.75
11-20 years ago12.5120.0.12.11224.68
21-30 years ago3.4240.21004.3227.916
31-40 years ago4.1220.0.1.8355.918
41-50 years ago2.7270.0.1.5384.222
over 50 years ago6.4170.4714.22211.113
total54.450.85048.25103.42
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.8100.47115.81033.16
11-20 years ago9.0140.21008.31517.510
21-30 years ago3.5240.0.3.4246.817
31-40 years ago2.3290.0.3.1255.418
41-50 years ago2.2300.0.2.1304.321
over 50 years ago4.5210.0.3.1257.616
total38.360.65835.8674.82
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.2160.85011.41219.49
11-20 years ago4.2210.6584.6209.514
21-30 years ago3.9230.8505.3199.913
31-40 years ago1.8330.21002.5294.521
41-50 years ago2.0310.0.2.9264.920
over 50 years ago6.6171.0455.51913.111
total25.883.52432.1661.43
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.7261.8332.9257.414
11-20 years ago2.1290.4713.1245.617
21-30 years ago2.5280.4711.4374.221
31-40 years ago1.2410.4710.6572.130
41-50 years ago0.6560.4700.6581.535
over 50 years ago3.7220.4702.0316.017
total12.7103.72210.51126.94
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5261.3415.6189.513
11-20 years ago1.7340.7493.8226.216
21-30 years ago2.1320.3712.2294.720
31-40 years ago1.0400.3701.0452.327
41-50 years ago0.7580.0.1.1451.735
over 50 years ago3.3240.8514.0218.114
total11.4123.52317.7832.54
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago8.3152.13016.11026.58
11-20 years ago4.2220.65810.01314.711
21-30 years ago3.2250.21007.61610.913
31-40 years ago4.6211.0455.11910.813
41-50 years ago4.0220.6586.91711.513
over 50 years ago15.9112.82728.1746.75
total40.267.21673.73121.12
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.3110.85017.21034.47
11-20 years ago12.1120.47116.51029.08
21-30 years ago10.8130.65812.71224.29
31-40 years ago7.1160.4718.71516.211
41-50 years ago4.2220.6585.1199.814
over 50 years ago19.0101.63517.51038.07
total69.544.42177.84151.62
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.6211.24112.31218.110
11-20 years ago3.2250.6586.61710.513
21-30 years ago2.9260.4719.01512.312
31-40 years ago5.3190.8508.21514.311
41-50 years ago3.2251.04510.01414.211
over 50 years ago18.3107.11763.6488.93
total37.5711.013109.73158.32
Switzerlandn/a0.4710.0.0.0.0.471
less than 10 years ago338.3210.514144.13492.81
11-20 years ago120.144.02280.95205.03
21-30 years ago59.863.32453.26116.34
31-40 years ago41.773.12537.2782.05
41-50 years ago28.382.92633.2864.45
over 50 years ago89.4514.911136.63240.92
total677.9138.77485.311201.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #861181/327512
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2004/06
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juraless than 10 years ago68.141.24114.31183.53
11-20 years ago23.590.6584.72028.88
21-30 years ago16.8100.4714.92022.19
31-40 years ago6.2170.6581.3388.115
41-50 years ago1.5350.4710.9452.826
over 50 years ago4.8200.4712.9268.015
total120.923.42329.07153.31
Eastern Juraless than 10 years ago26.660.31003.32430.25
11-20 years ago7.9150.0.0.4718.315
21-30 years ago3.9220.0.0.6584.520
31-40 years ago1.0440.0.0.4701.537
41-50 years ago1.3410.0.0.4701.735
over 50 years ago0.6570.0.0.0.0.657
total41.430.31005.11946.82
Western Plateauless than 10 years ago30.850.0.3.82334.65
11-20 years ago6.2170.0.0.8507.016
21-30 years ago3.5220.0.0.0.3.522
31-40 years ago1.4400.0.0.21001.537
41-50 years ago1.3410.0.0.21001.538
over 50 years ago2.2310.0.0.21002.430
total45.330.0.5.21950.52
Central Plateauless than 10 years ago46.940.0.4.81951.73
11-20 years ago9.3140.21002.13011.612
21-30 years ago3.3240.0.1.3374.720
31-40 years ago0.8500.0.0.21001.045
41-50 years ago0.0.0.0.0.21000.2100
over 50 years ago1.0450.0.0.8501.733
total61.320.21009.41370.91
Eastern Plateauless than 10 years ago79.930.0.3.82283.83
11-20 years ago13.4110.0.1.24114.611
21-30 years ago5.8180.0.0.21006.118
31-40 years ago1.8330.0.0.21002.031
41-50 years ago0.8500.0.0.21000.945
over 50 years ago0.4710.0.0.4710.850
total102.110.0.6.018108.11
Western Pre-Alpsless than 10 years ago8.0150.210011.71219.98
11-20 years ago4.5210.0.3.4237.915
21-30 years ago1.2410.0.4.0225.319
31-40 years ago1.7330.0.2.5264.220
41-50 years ago0.7500.0.1.4342.128
over 50 years ago3.4240.0.3.5256.817
total19.680.210026.4646.23
Central Pre-Alpsless than 10 years ago26.280.0.29.8756.14
11-20 years ago7.3160.4718.41516.110
21-30 years ago6.9170.0.3.82310.713
31-40 years ago3.7230.0.2.6296.318
41-50 years ago1.2410.0.1.5382.728
over 50 years ago8.9140.4713.52312.912
total54.450.85049.65104.82
Eastern Pre-Alpsless than 10 years ago18.790.0.17.8936.56
11-20 years ago6.7170.21008.01514.911
21-30 years ago4.7200.21004.8209.714
31-40 years ago1.6350.21002.4274.321
41-50 years ago0.8500.0.1.6352.429
over 50 years ago5.1200.0.3.5238.715
total37.860.65838.1576.52
Northwestern Alpsless than 10 years ago7.1161.0459.41417.610
11-20 years ago5.3190.8507.51613.611
21-30 years ago3.0260.6583.8237.516
31-40 years ago3.0250.0.4.1227.216
41-50 years ago2.0310.21003.7235.918
over 50 years ago11.0130.8505.21917.110
total31.573.52433.9668.93
Central Alpsless than 10 years ago4.9191.6354.12010.611
11-20 years ago2.6270.6572.5275.717
21-30 years ago1.8330.0.0.6582.429
31-40 years ago0.8491.0441.2402.925
41-50 years ago1.4380.21001.1402.726
over 50 years ago6.5171.0442.4289.913
total17.994.32011.91034.14
Northeastern Alpsless than 10 years ago3.1251.1417.01611.212
11-20 years ago2.4290.7503.5226.616
21-30 years ago1.7330.8512.1304.720
31-40 years ago1.2410.0.1.5352.727
41-50 years ago1.0450.31001.1412.429
over 50 years ago5.9171.4384.12111.412
total15.2104.32019.4739.03
Southwestern Alpsless than 10 years ago8.6151.04514.91124.68
11-20 years ago3.3240.9449.61413.911
21-30 years ago6.5170.8507.21614.511
31-40 years ago4.0220.6586.61711.313
41-50 years ago6.5171.7338.41516.610
over 50 years ago16.0112.62828.3746.95
total45.067.61675.13127.72
Southeastern Alpsless than 10 years ago18.7100.85022.8942.36
11-20 years ago12.5121.04517.61031.07
21-30 years ago11.1130.47111.61323.09
31-40 years ago8.0160.8505.71814.411
41-50 years ago5.5190.21004.32110.014
over 50 years ago29.181.43819.41049.86
total84.844.62181.34170.62
Southern Alpsless than 10 years ago5.4191.04511.61317.910
11-20 years ago5.4190.4719.41415.111
21-30 years ago8.3151.04512.51221.89
31-40 years ago5.8180.6589.71416.011
41-50 years ago5.8180.85010.31416.910
over 50 years ago24.498.01568.34100.73
total54.9511.813121.72188.41
Switzerlandless than 10 years ago353.128.216159.13520.41
11-20 years ago110.245.81879.25195.13
21-30 years ago78.754.22257.46140.44
31-40 years ago41.173.62338.7783.45
41-50 years ago29.983.72335.3768.85
over 50 years ago119.2416.111142.43277.72
total732.2141.57512.111285.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #861182/327513
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago68.941.14113.71183.83
11-20 years ago22.990.6585.01928.58
21-30 years ago10.6130.4712.52713.511
31-40 years ago7.1160.0.2.4299.514
41-50 years ago4.6200.4711.0446.018
over 50 years ago4.5210.9453.8229.314
total118.623.42328.47150.51
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago23.670.31002.33026.16
11-20 years ago10.9120.0.1.63512.511
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago1.7340.0.0.4712.231
total41.230.31005.11946.62
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.860.0.3.62331.45
11-20 years ago7.4160.0.0.6578.015
21-30 years ago3.9230.0.0.21004.122
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago1.7350.0.0.0.1.735
total44.130.0.5.01949.12
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago47.640.21005.21853.03
11-20 years ago9.3130.0.2.13011.512
21-30 years ago1.4370.0.0.8502.130
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.4701.241
total59.730.21009.21369.11
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago76.830.0.3.52380.23
11-20 years ago15.3110.0.1.04516.310
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago0.8500.0.0.5581.338
total101.610.0.6.018107.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.1160.210010.21317.59
11-20 years ago3.7230.0.5.3199.014
21-30 years ago2.6280.0.2.6265.219
31-40 years ago1.0450.0.2.5273.523
41-50 years ago1.4380.0.1.6333.024
over 50 years ago1.7340.0.3.3255.120
total17.690.210025.6743.33
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.280.210024.1848.55
11-20 years ago12.1120.0.11.91224.08
21-30 years ago3.0260.21004.1227.316
31-40 years ago3.9230.0.1.8355.719
41-50 years ago2.7270.0.1.5384.222
over 50 years ago5.3190.4714.0229.714
total51.250.85047.4599.42
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.0100.47115.81032.36
11-20 years ago8.5150.21008.31517.010
21-30 years ago3.3250.0.3.1256.417
31-40 years ago2.3290.0.3.1255.418
41-50 years ago1.9330.0.2.1304.022
over 50 years ago4.1220.0.3.1257.216
total36.160.65835.6672.32
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.8170.85011.41219.09
11-20 years ago3.8230.6584.6209.114
21-30 years ago3.3250.8505.3199.314
31-40 years ago1.6350.21002.5294.321
41-50 years ago2.0310.0.2.9264.920
over 50 years ago6.2181.0455.11912.312
total23.783.52431.7658.93
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5271.8332.7267.015
11-20 years ago2.1290.21002.9255.217
21-30 years ago2.3290.4711.4374.021
31-40 years ago1.0450.4710.6571.931
41-50 years ago0.6560.4700.6581.535
over 50 years ago3.7220.21001.8325.617
total12.1113.3249.91125.44
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.2281.3415.4188.913
11-20 years ago1.7340.7493.8226.216
21-30 years ago1.5380.3712.2294.121
31-40 years ago0.9440.3701.0452.228
41-50 years ago0.4720.0.1.1451.537
over 50 years ago2.7260.6593.5226.916
total9.5133.32417.0829.85
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3162.13016.11025.58
11-20 years ago4.0220.65810.01314.511
21-30 years ago2.2300.21007.4169.714
31-40 years ago3.6230.8505.1199.614
41-50 years ago3.0260.6586.41710.114
over 50 years ago14.2112.82727.5744.56
total34.377.01672.53113.82
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago15.4110.65816.61132.67
11-20 years ago12.1120.47116.31028.88
21-30 years ago8.8150.47112.31221.59
31-40 years ago7.1160.4718.71516.211
41-50 years ago4.0220.6584.9209.414
over 50 years ago16.2111.43816.71034.27
total63.553.82375.64142.82
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.4211.24112.11217.710
11-20 years ago2.8270.6586.4179.914
21-30 years ago2.7270.4718.81511.913
31-40 years ago4.1220.8508.21513.112
41-50 years ago2.6281.0459.81413.412
over 50 years ago15.3116.91761.8584.04
total32.0710.813107.13150.02
Switzerlandn/a0.4710.0.0.0.0.471
less than 10 years ago330.6210.314142.73483.61
11-20 years ago116.743.82280.05200.53
21-30 years ago54.063.12552.06109.14
31-40 years ago38.572.92637.2778.65
41-50 years ago26.092.92632.3861.26
over 50 years ago79.1514.212132.03225.23
total645.2137.17476.311158.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861183/327514
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago69.741.14113.71184.63
11-20 years ago23.590.6585.21929.37
21-30 years ago10.8130.4712.52713.711
31-40 years ago7.3160.0.2.4299.714
41-50 years ago4.6200.4711.0446.018
over 50 years ago4.7200.9453.8229.514
total120.623.42328.67152.71
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago24.270.31002.33026.76
11-20 years ago11.1120.0.1.63512.711
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago1.7340.0.0.4712.231
total42.030.31005.11947.42
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.860.0.3.62331.45
11-20 years ago7.4160.0.0.6578.015
21-30 years ago4.1220.0.0.21004.322
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago1.7350.0.0.0.1.735
total44.330.0.5.01949.22
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago48.240.21005.21853.63
11-20 years ago9.3130.0.2.13011.512
21-30 years ago1.4370.0.0.8502.130
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.6571.437
total60.320.21009.41369.91
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago77.530.0.3.52381.03
11-20 years ago15.7100.0.1.04516.710
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago1.0450.0.0.5581.635
total102.910.0.6.018108.91
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3160.210010.21317.79
11-20 years ago4.1220.0.5.3199.414
21-30 years ago3.2250.0.2.6265.818
31-40 years ago1.0450.0.2.5273.523
41-50 years ago1.4380.0.1.6333.024
over 50 years ago2.4300.0.3.5245.918
total19.490.210025.8745.43
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago25.480.210024.5850.15
11-20 years ago12.5120.0.12.11224.68
21-30 years ago3.4240.21004.3227.916
31-40 years ago4.1220.0.1.8355.918
41-50 years ago2.7270.0.1.5384.222
over 50 years ago6.8170.4714.22211.513
total55.050.85048.45104.22
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.8100.47115.81033.16
11-20 years ago9.2140.21008.31517.710
21-30 years ago3.7230.0.3.4247.016
31-40 years ago2.3290.0.3.1255.418
41-50 years ago2.2300.0.2.1304.321
over 50 years ago5.1200.0.3.1258.215
total39.360.65835.8675.82
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.4160.85011.41219.69
11-20 years ago4.6210.6584.6209.914
21-30 years ago4.1220.8505.31910.113
31-40 years ago2.0310.21002.5294.720
41-50 years ago3.0260.0.2.9265.918
over 50 years ago8.4151.0455.51915.011
total29.673.52432.1665.23
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.7261.8332.9257.414
11-20 years ago3.1240.4713.1246.616
21-30 years ago3.5240.4711.6355.418
31-40 years ago2.0320.4710.7503.125
41-50 years ago0.6560.4700.6581.535
over 50 years ago5.3190.4702.4288.015
total17.193.72211.31032.14
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5261.3415.6189.513
11-20 years ago2.3290.7493.8226.816
21-30 years ago2.9270.3712.2295.518
31-40 years ago1.6330.3701.0452.925
41-50 years ago0.7580.0.1.1451.735
over 50 years ago6.1170.8514.02110.812
total16.1103.52317.7837.34
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago8.3152.13016.11026.58
11-20 years ago4.6210.65810.01315.111
21-30 years ago3.6230.21007.61611.313
31-40 years ago6.3181.0455.31912.612
41-50 years ago5.0200.6586.91712.512
over 50 years ago18.7103.02628.1749.85
total46.567.41673.93127.82
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.5110.85017.61035.07
11-20 years ago12.7120.47116.51029.67
21-30 years ago12.0130.65813.21225.88
31-40 years ago8.3150.6589.21418.010
41-50 years ago7.0170.6585.11912.712
over 50 years ago31.581.63518.41051.56
total88.044.62179.94172.52
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago5.0201.24112.51218.710
11-20 years ago3.8230.6586.81711.213
21-30 years ago4.9200.4719.21414.511
31-40 years ago8.4150.8509.91419.010
41-50 years ago5.4191.04510.81317.110
over 50 years ago22.097.31666.8496.13
total49.4611.213116.03176.62
Switzerlandn/a0.4710.0.0.0.0.471
less than 10 years ago339.5210.514144.93494.81
11-20 years ago123.944.02281.15209.03
21-30 years ago66.053.32454.16123.34
31-40 years ago49.163.32439.8792.25
41-50 years ago35.372.92634.0772.25
over 50 years ago116.3415.311141.43273.02
total730.5139.37495.111264.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #861184/327515
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago68.941.14113.71183.83
11-20 years ago22.990.6585.01928.58
21-30 years ago10.6130.4712.52713.511
31-40 years ago7.1160.0.2.4299.514
41-50 years ago4.6200.4711.0446.018
over 50 years ago4.5210.9453.8229.314
total118.623.42328.47150.51
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago23.670.31002.33026.16
11-20 years ago10.9120.0.1.63512.511
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago1.7340.0.0.4712.231
total41.230.31005.11946.62
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.860.0.3.62331.45
11-20 years ago7.4160.0.0.6578.015
21-30 years ago3.9230.0.0.21004.122
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago1.7350.0.0.0.1.735
total44.130.0.5.01949.12
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago47.940.21005.21853.23
11-20 years ago9.3130.0.2.13011.512
21-30 years ago1.4370.0.0.8502.130
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago0.8500.0.0.4701.241
total59.920.21009.21369.31
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago76.830.0.3.52380.23
11-20 years ago15.3110.0.1.04516.310
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago0.8500.0.0.5581.338
total101.610.0.6.018107.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.1160.210010.21317.59
11-20 years ago3.7230.0.5.3199.014
21-30 years ago3.0260.0.2.6265.618
31-40 years ago1.0450.0.2.5273.523
41-50 years ago1.4380.0.1.6333.024
over 50 years ago2.4300.0.3.5245.918
total18.690.210025.8744.63
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago24.280.210024.1848.55
11-20 years ago12.1120.0.11.91224.08
21-30 years ago3.0260.21004.1227.316
31-40 years ago3.9230.0.1.8355.719
41-50 years ago2.7270.0.1.5384.222
over 50 years ago6.1180.4714.02210.513
total52.050.85047.45100.22
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.0100.47115.81032.36
11-20 years ago8.5150.21008.31517.010
21-30 years ago3.3250.0.3.4246.617
31-40 years ago2.3290.0.3.1255.418
41-50 years ago2.1310.0.2.1304.221
over 50 years ago4.5210.0.3.1257.616
total36.760.65835.8673.22
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago6.8170.85011.41219.09
11-20 years ago4.0220.6584.6209.314
21-30 years ago3.5240.8505.3199.514
31-40 years ago1.8330.21002.5294.521
41-50 years ago3.0260.0.2.9265.918
over 50 years ago8.0161.0455.11914.111
total27.183.52431.7662.33
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5271.8332.7267.015
11-20 years ago2.1290.21003.1245.417
21-30 years ago2.9260.4711.6354.819
31-40 years ago1.8330.4710.7502.925
41-50 years ago0.6560.4700.6581.535
over 50 years ago5.3190.4702.2297.815
total15.1103.52310.91129.64
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4271.3415.4189.113
11-20 years ago2.1300.7493.8226.616
21-30 years ago1.7350.3712.2294.321
31-40 years ago1.6330.3701.0452.925
41-50 years ago0.7580.0.1.1451.735
over 50 years ago5.7180.6593.5229.813
total14.1103.32417.0834.54
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3162.13016.11025.58
11-20 years ago4.4210.65810.01314.911
21-30 years ago2.2300.21007.4169.714
31-40 years ago5.5190.8505.31911.613
41-50 years ago4.0220.6586.61711.313
over 50 years ago17.1103.02627.5747.55
total40.467.21672.93120.52
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago15.6110.65817.01033.27
11-20 years ago12.1120.47116.31028.88
21-30 years ago9.2150.47112.51222.19
31-40 years ago8.3150.6589.21418.010
41-50 years ago6.8170.6585.11912.412
over 50 years ago28.581.43817.41047.36
total80.444.02277.64162.02
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.8201.24112.31218.310
11-20 years ago3.4240.6586.61710.713
21-30 years ago4.1220.4719.01513.512
31-40 years ago7.7160.8509.71418.210
41-50 years ago5.2191.04510.61316.711
over 50 years ago19.7107.11765.6492.33
total44.9611.013113.83169.72
Switzerlandn/a0.4710.0.0.0.0.471
less than 10 years ago331.6210.314143.33485.21
11-20 years ago118.343.82280.45202.53
21-30 years ago57.263.12552.96113.14
31-40 years ago46.963.12539.6789.65
41-50 years ago33.882.92633.5870.25
over 50 years ago106.8414.811137.13258.62
total694.8137.97486.711219.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861185/327516
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago68.941.14113.71183.83
11-20 years ago22.990.6585.21928.78
21-30 years ago10.6130.4712.52713.511
31-40 years ago7.1160.0.2.4299.514
41-50 years ago4.8200.4711.0446.217
over 50 years ago4.9200.9453.8229.714
total119.223.42328.67151.31
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago23.670.31002.33026.16
11-20 years ago10.9120.0.1.63512.511
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago2.0320.0.0.4712.429
total41.430.31005.11946.82
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago27.860.0.3.62331.45
11-20 years ago7.4160.0.0.6578.015
21-30 years ago3.9230.0.0.21004.122
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago2.4300.0.0.0.2.430
total44.730.0.5.01949.72
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago47.940.21005.21853.23
11-20 years ago9.5130.0.2.13011.712
21-30 years ago1.6350.0.0.8502.328
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0440.0.0.6571.635
total60.520.21009.41370.11
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago76.830.0.3.52380.23
11-20 years ago15.3110.0.1.04516.310
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago0.8500.0.0.5581.338
total101.610.0.6.018107.61
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.1160.210010.21317.59
11-20 years ago3.7230.0.5.3199.014
21-30 years ago3.0260.0.2.6265.618
31-40 years ago1.2410.0.2.5273.723
41-50 years ago1.4380.0.1.6333.024
over 50 years ago3.0260.0.4.0237.017
total19.490.210026.3645.83
Central Pre-Alpsn/a0.21000.0.0.0.0.2100
less than 10 years ago24.580.210024.3848.95
11-20 years ago12.1120.0.12.41224.48
21-30 years ago3.0260.21004.1227.316
31-40 years ago3.9230.0.2.0335.918
41-50 years ago2.7270.0.1.7354.421
over 50 years ago7.4160.4714.62112.512
total53.850.85049.05103.62
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.0100.47116.01032.56
11-20 years ago8.5150.21008.31517.010
21-30 years ago3.3250.0.3.4246.617
31-40 years ago2.3290.0.3.3245.718
41-50 years ago2.1310.0.2.1304.221
over 50 years ago5.2200.0.3.9229.114
total37.460.65837.0575.02
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.0160.85011.41219.29
11-20 years ago4.2210.6584.8209.614
21-30 years ago3.9230.8505.51810.113
31-40 years ago1.8330.21002.5294.521
41-50 years ago3.0260.0.2.9265.918
over 50 years ago10.2141.0455.71816.910
total30.173.52432.7666.33
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5271.8333.1247.414
11-20 years ago2.3280.4713.1245.816
21-30 years ago3.1250.4711.8335.218
31-40 years ago2.0320.4710.7503.125
41-50 years ago0.6560.4700.6581.535
over 50 years ago6.7161.0442.62710.213
total17.194.32011.91033.34
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.4271.3415.6189.313
11-20 years ago2.1300.7494.0216.816
21-30 years ago1.7350.3712.4274.520
31-40 years ago1.6330.3701.0452.925
41-50 years ago0.7580.0.1.3411.933
over 50 years ago6.4171.7354.91913.011
total14.9104.32019.2738.43
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.5162.13016.31025.98
11-20 years ago4.4210.65810.01314.911
21-30 years ago2.2300.21007.4169.714
31-40 years ago5.5190.8505.31911.613
41-50 years ago4.0220.6586.61711.313
over 50 years ago20.593.42429.1752.95
total44.067.61674.73126.32
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago15.6110.85017.01033.47
11-20 years ago12.1120.47116.31028.88
21-30 years ago9.2150.47112.51222.19
31-40 years ago8.5150.6589.91419.010
41-50 years ago6.8170.6585.11912.412
over 50 years ago30.881.63519.8952.26
total83.044.42180.74168.02
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago4.8201.24112.51218.510
11-20 years ago3.6230.6586.81711.013
21-30 years ago4.5210.4719.01513.912
31-40 years ago8.3150.8509.91419.010
41-50 years ago5.8181.04511.21317.910
over 50 years ago26.587.81671.34105.63
total53.5511.813120.72186.01
Switzerlandn/a0.6580.0.0.0.0.658
less than 10 years ago332.2210.514144.73487.41
11-20 years ago119.144.02281.65204.73
21-30 years ago58.363.12553.46114.84
31-40 years ago48.163.12541.0792.25
41-50 years ago34.582.92634.6772.05
over 50 years ago127.7417.810151.13296.62
total720.6141.37506.411268.30
© WSL, Swiss National Forest Inventory, 18.06.2020 #861186/327517
NFI4
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: forest
grid: 1.4 x 1.4 km grid
state2009/17
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.
less than 10 years ago69.741.14113.71184.63
11-20 years ago23.590.6585.41929.47
21-30 years ago10.8130.4712.52713.711
31-40 years ago7.3160.0.2.4299.714
41-50 years ago4.8200.4711.0446.217
over 50 years ago5.1190.9453.8229.914
total121.223.42328.87153.51
Eastern Juran/a0.21000.0.0.0.0.2100
less than 10 years ago24.270.31002.33026.76
11-20 years ago11.1120.0.1.63512.711
21-30 years ago2.9260.0.0.21003.125
31-40 years ago1.3400.0.0.4711.735
41-50 years ago0.6580.0.0.21000.850
over 50 years ago2.0320.0.0.4712.429
total42.230.31005.11947.62
Western Plateaun/a0.21000.0.0.0.0.2100
less than 10 years ago28.060.0.3.62331.65
11-20 years ago7.4160.0.0.6578.015
21-30 years ago4.1220.0.0.21004.322
31-40 years ago2.0310.0.0.21002.229
41-50 years ago1.1440.0.0.4701.537
over 50 years ago2.4300.0.0.0.2.430
total45.130.0.5.01950.12
Central Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago48.240.21005.21853.63
11-20 years ago9.5130.0.2.13011.712
21-30 years ago1.6350.0.0.8502.328
31-40 years ago0.6580.0.0.8501.437
41-50 years ago0.0.0.0.0.0.0.0.
over 50 years ago1.0440.0.0.8501.833
total60.920.21009.61370.71
Eastern Plateaun/a0.0.0.0.0.0.0.0.
less than 10 years ago77.530.0.3.52381.03
11-20 years ago15.9100.0.1.04516.910
21-30 years ago5.6180.0.1.0456.617
31-40 years ago2.0310.0.0.0.2.031
41-50 years ago1.0450.0.0.0.1.045
over 50 years ago1.0450.0.0.5581.635
total103.110.0.6.018109.11
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.3160.210010.21317.79
11-20 years ago4.1220.0.5.3199.414
21-30 years ago3.2250.0.2.6265.818
31-40 years ago1.2410.0.2.5273.723
41-50 years ago1.4380.0.1.6333.024
over 50 years ago3.0260.0.4.0237.017
total20.280.210026.3646.63
Central Pre-Alpsn/a0.21000.0.0.0.0.2100
less than 10 years ago25.780.210024.5850.35
11-20 years ago12.5120.0.12.61225.08
21-30 years ago3.6240.21004.3228.115
31-40 years ago4.1220.0.2.0336.118
41-50 years ago2.7270.0.1.7354.421
over 50 years ago8.4150.4714.62113.412
total57.250.85049.65107.62
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago16.8100.47116.01033.36
11-20 years ago9.2140.21008.31517.710
21-30 years ago3.7230.0.3.4247.016
31-40 years ago2.3290.0.3.3245.718
41-50 years ago2.2300.0.2.1304.321
over 50 years ago5.8190.0.3.9229.714
total40.060.65837.0577.72
Northwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago7.6160.85011.41219.89
11-20 years ago4.6210.6584.82010.113
21-30 years ago4.5210.8505.51810.813
31-40 years ago2.2300.21002.5294.920
41-50 years ago3.0260.0.2.9265.918
over 50 years ago11.4131.0455.71818.110
total33.373.52432.7669.53
Central Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.7261.8333.3237.814
11-20 years ago3.1240.4713.1246.616
21-30 years ago3.7230.4711.8335.818
31-40 years ago2.2300.4710.7503.324
41-50 years ago1.2400.4700.6582.230
over 50 years ago6.9161.0442.62710.413
total19.784.32012.11036.14
Northeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago2.5261.3415.6189.513
11-20 years ago2.3290.7494.0217.016
21-30 years ago2.9270.3712.4275.718
31-40 years ago1.6330.3701.0452.925
41-50 years ago0.7580.0.1.3411.933
over 50 years ago7.6151.7354.91914.210
total17.794.32019.2741.33
Southwestern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago8.5152.13016.31026.98
11-20 years ago4.6210.65810.01315.111
21-30 years ago3.8230.21007.61611.513
31-40 years ago6.3181.0455.31912.612
41-50 years ago5.2190.6586.91712.712
over 50 years ago24.193.62329.3757.05
total52.558.01575.33135.82
Southeastern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago17.1100.85017.61035.67
11-20 years ago12.7120.47116.51029.67
21-30 years ago12.0130.65813.21225.88
31-40 years ago8.5150.6589.91419.010
41-50 years ago7.0170.6585.11912.712
over 50 years ago34.271.83320.6956.65
total91.644.82082.94179.22
Southern Alpsn/a0.0.0.0.0.0.0.0.
less than 10 years ago5.0201.24112.71218.910
11-20 years ago3.8230.6586.81711.213
21-30 years ago5.3190.4719.21414.911
31-40 years ago8.5150.85010.11419.410
41-50 years ago6.0181.04511.21318.110
over 50 years ago30.187.81671.64109.63
total58.7511.813121.72192.11
Switzerlandn/a0.6580.0.0.0.0.658
less than 10 years ago340.9210.514145.83497.21
11-20 years ago124.344.02282.25210.53
21-30 years ago67.653.32454.66125.54
31-40 years ago50.163.32441.2794.64
41-50 years ago36.972.92634.8774.65
over 50 years ago143.0418.210152.73313.92
total763.4142.27511.311316.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #861187/327518
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI1/NFI2/NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aless than 10 years ago91.14154.3250.7634.074.621334.72
11-20 years ago29.3827.2816.01118.8101.63592.94
21-30 years ago19.41012.11211.61313.0121.83358.06
31-40 years ago6.7173.3246.3187.8161.24125.39
41-50 years ago2.8271.9322.4296.4181.43814.911
over 50 years ago3.8232.2309.71429.389.41454.56
total153.22201.0196.84109.3420.19580.41
inside perimeterless than 10 years ago1.4380.0.0.21004.9201.0457.516
11-20 years ago0.6580.21000.6583.7230.4715.519
21-30 years ago0.4710.0.0.21002.2301.0453.723
31-40 years ago0.6580.0.0.21001.8330.6583.225
41-50 years ago0.4710.0.0.0.2.6280.8503.723
over 50 years ago0.4710.0.0.4714.0225.91810.714
total3.7230.21001.63519.1109.61434.37
outside perimeterless than 10 years ago16.91012.21256.7553.869.214148.83
11-20 years ago5.0204.22218.21036.977.41671.65
21-30 years ago5.6191.63511.21319.9107.61645.96
31-40 years ago1.8330.6587.11617.3106.81733.58
41-50 years ago1.3380.6583.82215.4118.01529.18
over 50 years ago2.9261.2417.81647.5654.45113.84
total33.6720.39104.93190.7293.33442.82
totalless than 10 years ago109.53166.42107.7392.7414.811491.01
11-20 years ago34.9731.6734.8759.459.414170.13
21-30 years ago25.4813.71223.1935.1710.413107.74
31-40 years ago9.1143.92213.61226.888.61562.05
41-50 years ago4.5212.5286.21824.3910.21447.86
over 50 years ago7.2163.32417.91080.8469.74179.03
total190.51221.51203.31319.11123.121057.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861188/327519
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: terrestrial grid NFI3
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aless than 10 years ago92.73155.9251.4539.964.520344.42
11-20 years ago30.6729.0717.41024.083.223104.24
21-30 years ago22.7813.41113.21120.594.61974.55
31-40 years ago6.8163.9217.41513.3112.92534.37
41-50 years ago3.2231.9302.6268.7142.22918.610
over 50 years ago5.5182.52711.51242.2615.51077.15
total161.52206.61103.53148.7332.87653.11
inside perimeterless than 10 years ago1.4350.0.0.5584.9191.2388.115
11-20 years ago0.5580.21000.7503.9210.4715.718
21-30 years ago0.3710.0.0.4702.3280.9453.921
31-40 years ago0.5580.0.0.21002.2290.7503.622
41-50 years ago0.3710.0.0.0.2.3280.7503.423
over 50 years ago0.4710.0.0.6584.6207.31512.812
total3.6220.21002.42820.2911.11237.47
outside perimeterless than 10 years ago17.31012.71158.4558.0512.312158.73
11-20 years ago5.4183.72220.1938.568.41476.15
21-30 years ago5.1192.32811.91224.6811.11254.96
31-40 years ago1.6330.7507.21518.798.11436.37
41-50 years ago1.2380.5584.81915.7109.21431.57
over 50 years ago3.2231.1419.91352.7559.94126.83
total33.9720.99112.33208.22109.02484.31
totalless than 10 years ago111.53168.62110.43102.8418.09511.21
11-20 years ago36.6632.8738.2666.4511.912185.93
21-30 years ago28.1715.71025.5847.5616.510133.33
31-40 years ago8.9144.61914.71134.2711.71274.25
41-50 years ago4.8192.5277.41526.7812.11253.56
over 50 years ago9.0143.52222.0999.5482.73216.72
total198.91227.71218.21377.01152.921174.80
© WSL, Swiss National Forest Inventory, 18.06.2020 #861189/327520
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aless than 10 years ago93.64156.6252.6640.374.621347.72
11-20 years ago31.0728.0818.21023.493.424104.04
21-30 years ago20.3912.71212.51219.7104.32169.55
31-40 years ago7.1163.5237.11711.4132.82731.98
41-50 years ago2.8271.9322.8278.4152.23018.110
over 50 years ago4.7212.42912.01339.4714.71173.25
total159.42205.21105.13142.5332.07644.31
inside perimeterless than 10 years ago1.4380.0.0.21004.9201.0457.516
11-20 years ago0.6580.21000.6584.1220.4715.918
21-30 years ago0.4710.0.0.21002.4291.0453.922
31-40 years ago0.6580.0.0.21002.4290.6583.823
41-50 years ago0.4710.0.0.0.2.6280.8503.723
over 50 years ago0.4710.0.0.4714.6217.11612.413
total3.7230.21001.63520.9910.81337.37
outside perimeterless than 10 years ago17.41012.21257.6556.9611.013155.03
11-20 years ago5.0204.22218.81039.579.21476.65
21-30 years ago5.6191.63511.81323.7910.71353.46
31-40 years ago1.8330.6587.31617.9108.11535.77
41-50 years ago1.3380.6584.02216.4118.91531.38
over 50 years ago2.9261.2418.81552.9659.25125.04
total34.0720.39108.33207.32107.13477.11
totalless than 10 years ago112.33168.82110.33102.1416.611510.21
11-20 years ago36.6732.4737.6767.0512.912186.53
21-30 years ago26.2814.31124.5945.7616.011126.94
31-40 years ago9.5144.12214.61131.7811.51371.45
41-50 years ago4.5212.5286.81727.3812.01253.16
over 50 years ago8.0163.52321.2996.9481.04210.63
total197.11225.71215.11370.81150.021158.71
© WSL, Swiss National Forest Inventory, 18.06.2020 #861190/327521
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aless than 10 years ago94.03157.8253.2641.574.820351.32
11-20 years ago31.4728.8818.41024.093.623106.24
21-30 years ago20.9912.71212.51219.9104.32170.35
31-40 years ago7.1163.7237.11712.2132.82732.98
41-50 years ago2.8271.9322.8278.6152.42918.510
over 50 years ago4.9202.62812.61241.2715.71177.05
total161.02207.61106.53147.4333.67656.11
inside perimeterless than 10 years ago1.4380.0.0.21005.1201.0457.716
11-20 years ago0.6580.21000.6584.1220.4715.918
21-30 years ago0.4710.0.0.21002.4291.0453.922
31-40 years ago0.6580.0.0.21002.4290.6583.823
41-50 years ago0.4710.0.0.0.2.6280.8503.723
over 50 years ago0.4710.0.0.4714.6217.31612.612
total3.7230.21001.63521.1911.01337.77
outside perimeterless than 10 years ago17.61012.41258.6557.5511.013157.13
11-20 years ago5.2194.22219.01039.779.21477.25
21-30 years ago5.6191.63512.01324.1911.31354.66
31-40 years ago1.8330.6587.51618.1108.11536.17
41-50 years ago1.3380.6584.22116.6118.91531.68
over 50 years ago2.9261.2419.21553.5660.65127.43
total34.4720.59110.53209.52109.13484.11
totalless than 10 years ago113.03170.22112.03104.1416.710516.01
11-20 years ago37.2733.1738.0767.8513.112189.33
21-30 years ago26.9814.31124.7946.3616.610128.94
31-40 years ago9.5144.32114.81132.7811.51372.85
41-50 years ago4.5212.5287.01727.7812.21253.96
over 50 years ago8.2153.72322.2999.3483.54217.03
total199.21228.31218.71378.01153.721177.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #861191/327522
NFI3
forest area
rockfall SilvaProtect · time of last treatment (classes of 10 years)
unit of reference: production region
unit: 1000 ha
unit of evaluation: accessible forest
grid: 1.4 x 1.4 km grid
state2004/06
production region
JuraPlateauPre-AlpsAlpsSouthern Alps Switzerland
rockfall SilvaProtecttime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
n/aless than 10 years ago94.03157.8253.2642.175.419352.52
11-20 years ago31.4728.8818.61025.895.219109.84
21-30 years ago20.9912.71212.91223.397.71677.55
31-40 years ago7.1163.7237.11716.8115.41940.17
41-50 years ago2.8271.9322.82715.0114.62127.19
over 50 years ago4.9202.62814.21258.6618.01098.34
total161.02207.61108.83181.6346.26705.21
inside perimeterless than 10 years ago1.4380.0.0.21005.1201.0457.716
11-20 years ago0.6580.21000.6584.1220.4715.918
21-30 years ago0.4710.0.0.21002.6281.0454.122
31-40 years ago0.6580.0.0.21002.4290.6583.823
41-50 years ago0.4710.0.0.0.2.6280.8503.723
over 50 years ago0.4710.0.0.4715.0207.51613.212
total3.7230.21001.63521.8911.21338.57
outside perimeterless than 10 years ago17.61012.41258.6557.5511.213157.33
11-20 years ago5.2194.22219.21040.179.41478.05
21-30 years ago5.6191.63512.01324.7912.31256.26
31-40 years ago1.8330.6587.51618.7109.11437.77
41-50 years ago1.3380.6584.22117.41010.11433.68
over 50 years ago2.9261.2419.41454.5663.05131.03
total34.4720.59111.03212.92115.03493.81
totalless than 10 years ago113.03170.22112.03104.7417.510517.41
11-20 years ago37.2733.1738.4770.1514.911193.73
21-30 years ago26.9814.31125.1950.6621.09137.94
31-40 years ago9.5144.32114.81138.0715.01181.65
41-50 years ago4.5212.5287.01735.0715.51164.45
over 50 years ago8.2153.72324.09118.1488.54242.52
total199.21228.31221.31416.31172.421237.51
© WSL, Swiss National Forest Inventory, 18.06.2020 #861192/327523
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