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NFI4
forest area
protection forest perimeter SilvaProtect · degree of transportation system density by method of timber harvest
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
protection forest perimeter SilvaProtect
outside of perimeterinside perimetertotal
economic regiondegree of transportation system density by method of timber harvest1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.4710.21000.658
high road infrastructure, ground based59.2514.81174.04
medium road infrastructure, ground based40.568.71449.25
low road infrastructure, ground based8.1151.4389.514
high road infrastructure, supported by cable or helicopter4.1225.7189.814
medium road infrastructure, supported by cable or helicopter1.0450.6581.635
low road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
total113.3231.47144.81
Eastern Juran/a0.21000.0.0.2100
high road infrastructure, ground based31.453.52434.94
medium road infrastructure, ground based6.5171.4377.915
low road infrastructure, ground based0.6580.0.0.658
high road infrastructure, supported by cable or helicopter1.6370.4702.032
medium road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
low road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
total40.335.41945.72
Western Plateaun/a0.0.0.0.0.0.
high road infrastructure, ground based25.562.92628.56
medium road infrastructure, ground based13.6111.24114.810
low road infrastructure, ground based1.9330.9502.827
high road infrastructure, supported by cable or helicopter0.8500.0.0.850
medium road infrastructure, supported by cable or helicopter0.21000.0.0.2100
low road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
total42.035.01947.02
Central Plateaun/a0.0.0.21000.2100
high road infrastructure, ground based49.344.52053.73
medium road infrastructure, ground based8.5143.12411.612
low road infrastructure, ground based0.6580.4710.945
high road infrastructure, supported by cable or helicopter0.6580.8501.437
medium road infrastructure, supported by cable or helicopter0.6570.6581.241
low road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
total59.539.41369.01
Eastern Plateaun/a0.21000.0.0.2100
high road infrastructure, ground based83.923.72387.62
medium road infrastructure, ground based10.4131.24111.512
low road infrastructure, ground based0.6580.4711.045
high road infrastructure, supported by cable or helicopter4.3210.8505.119
medium road infrastructure, supported by cable or helicopter0.21000.0.0.2100
low road infrastructure, supported by cable or helicopter0.0.0.0.0.0.
total99.626.018105.61
Western Pre-Alpsn/a0.0.0.21000.2100
high road infrastructure, ground based4.1223.8237.915
medium road infrastructure, ground based3.3252.5285.818
low road infrastructure, ground based1.5363.4254.920
high road infrastructure, supported by cable or helicopter2.7268.11410.812
medium road infrastructure, supported by cable or helicopter3.1264.0227.116
low road infrastructure, supported by cable or helicopter0.8512.8273.623
total15.61024.7740.33
Central Pre-Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based11.81211.21322.98
medium road infrastructure, ground based12.8128.31521.19
low road infrastructure, ground based3.4243.1266.517
high road infrastructure, supported by cable or helicopter11.61315.61127.37
medium road infrastructure, supported by cable or helicopter7.0167.91514.911
low road infrastructure, supported by cable or helicopter1.3381.1412.427
total47.9547.2595.12
Eastern Pre-Alpsn/a0.21000.0.0.2100
high road infrastructure, ground based10.5139.11419.69
medium road infrastructure, ground based7.6166.01713.511
low road infrastructure, ground based3.8232.9266.717
high road infrastructure, supported by cable or helicopter4.52111.91216.410
medium road infrastructure, supported by cable or helicopter6.1174.32110.413
low road infrastructure, supported by cable or helicopter0.4700.6571.044
total32.9634.8667.73
Northwestern Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based2.5281.7354.222
medium road infrastructure, ground based1.4372.7264.121
low road infrastructure, ground based1.6353.4245.019
high road infrastructure, supported by cable or helicopter4.62011.81216.410
medium road infrastructure, supported by cable or helicopter3.8238.81412.612
low road infrastructure, supported by cable or helicopter3.7235.1198.814
total17.61033.5651.13
Central Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based0.21000.4710.656
medium road infrastructure, ground based0.4690.21000.657
low road infrastructure, ground based1.7320.8492.526
high road infrastructure, supported by cable or helicopter1.2404.1205.317
medium road infrastructure, supported by cable or helicopter1.7323.5225.218
low road infrastructure, supported by cable or helicopter4.4192.5276.815
total9.51211.51020.95
Northeastern Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based0.6592.5283.125
medium road infrastructure, ground based0.5561.6322.127
low road infrastructure, ground based0.8511.9332.727
high road infrastructure, supported by cable or helicopter2.1307.0159.013
medium road infrastructure, supported by cable or helicopter1.5354.2215.717
low road infrastructure, supported by cable or helicopter2.1312.0314.021
total7.61519.1726.65
Southwestern Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based1.9323.0255.019
medium road infrastructure, ground based1.4383.3244.720
low road infrastructure, ground based4.8208.51513.312
high road infrastructure, supported by cable or helicopter4.02218.6922.68
medium road infrastructure, supported by cable or helicopter6.21818.9925.28
low road infrastructure, supported by cable or helicopter6.11822.1928.27
total24.5874.5399.02
Southeastern Alpsn/a0.0.0.0.0.0.
high road infrastructure, ground based3.8232.9266.717
medium road infrastructure, ground based5.1202.6277.716
low road infrastructure, ground based11.1139.11420.29
high road infrastructure, supported by cable or helicopter5.81812.11217.810
medium road infrastructure, supported by cable or helicopter9.61418.91028.58
low road infrastructure, supported by cable or helicopter15.41125.1840.46
total50.6570.74121.32
Southern Alpsn/a0.0.0.4710.471
high road infrastructure, ground based0.6583.2253.823
medium road infrastructure, ground based1.9332.0313.923
low road infrastructure, ground based3.6238.81512.412
high road infrastructure, supported by cable or helicopter2.62814.31116.810
medium road infrastructure, supported by cable or helicopter5.02030.4735.47
low road infrastructure, supported by cable or helicopter6.51743.8650.35
total20.19103.03123.12
Switzerlandn/a1.0451.0451.932
high road infrastructure, ground based285.3267.15352.52
medium road infrastructure, ground based113.8444.86158.63
low road infrastructure, ground based44.1745.0789.15
high road infrastructure, supported by cable or helicopter50.46111.24161.63
medium road infrastructure, supported by cable or helicopter46.06102.14148.03
low road infrastructure, supported by cable or helicopter40.67105.04145.73
total581.21476.111057.41
© WSL, Swiss National Forest Inventory, 25.09.2020 #900521/364889
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