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NFI4
forest area
protection forest perimeter SilvaProtect · degree of transportation system density by method of timber harvest
unit of reference: protection forest region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest NFI3/NFI4
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
protection forest perimeter SilvaProtectdegree of transportation system density by method of timber harvest1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
outside of perimetern/a0.8500.0.0.21000.0.0.0.0.0.1.045
high road infrastructure, ground based253.7219.91011.8132.1304.1221.241292.82
medium road infrastructure, ground based83.2417.8109.3142.4295.5192.230120.54
low road infrastructure, ground based13.3128.6157.2166.61713.5125.21954.56
high road infrastructure, supported by cable or helicopter11.51321.099.1146.0186.4173.42457.46
medium road infrastructure, supported by cable or helicopter2.03217.81010.9137.51613.6127.71659.46
low road infrastructure, supported by cable or helicopter0.0.7.6169.0149.61420.41012.31258.96
total364.5192.7457.4534.3763.5532.07644.51
inside perimetern/a0.4710.21000.0.0.0.0.0.0.4711.045
high road infrastructure, ground based29.8817.21012.0123.4233.3244.02269.75
medium road infrastructure, ground based16.01113.6128.0153.5232.8272.23046.16
low road infrastructure, ground based3.02610.2146.0188.91411.5139.81449.36
high road infrastructure, supported by cable or helicopter7.81636.4723.9819.6913.11215.811116.74
medium road infrastructure, supported by cable or helicopter1.24120.8914.11120.3920.9933.97111.34
low road infrastructure, supported by cable or helicopter0.0.10.4146.21823.7827.7851.85119.74
total58.25108.7370.1479.5379.34117.92513.91
totaln/a1.2410.21000.21000.0.0.0.0.4712.032
high road infrastructure, ground based283.5237.1723.885.6187.5165.219362.52
medium road infrastructure, ground based99.2431.4717.2105.9188.3154.521166.63
low road infrastructure, ground based16.31118.81013.21215.51125.0814.911103.94
high road infrastructure, supported by cable or helicopter19.31057.4533.0725.7819.51019.210174.03
medium road infrastructure, supported by cable or helicopter3.22538.6725.0827.8834.5741.66170.73
low road infrastructure, supported by cable or helicopter0.0.17.91015.21133.3748.1664.14178.73
total422.81201.41127.52113.82142.82150.021158.41
© WSL, Swiss National Forest Inventory, 25.09.2020 #900519/364887
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