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NFI4
forest area
avalanches SilvaProtect · degree of cover (aerial photo, 5 classes)
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
avalanches SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regiondegree of cover (aerial photo, 5 classes)1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Jura0-20%1.5370.0.0.0.1.537
21-40%1.5370.21000.0.1.735
41-60%9.1140.21000.4719.714
61-80%24.481.0454.12229.57
over 80%76.843.32422.38102.42
total113.324.62026.88144.81
Eastern Jura0-20%0.8470.0.0.0.0.847
21-40%0.21000.0.0.0.0.2100
41-60%1.3410.0.0.21001.537
61-80%4.0220.0.0.5714.521
over 80%35.240.0.3.52338.73
total41.630.0.4.12245.72
Western Plateau0-20%1.0430.0.0.0.1.043
21-40%0.6570.0.0.0.0.657
41-60%3.6210.0.0.0.3.621
61-80%7.3160.0.0.9508.215
over 80%29.550.0.4.12133.74
total42.030.0.5.01947.02
Central Plateau0-20%0.9480.0.0.21001.143
21-40%0.7560.0.0.0.0.756
41-60%3.8210.0.0.21004.021
61-80%11.6120.0.1.43713.011
over 80%42.540.0.7.61550.23
total59.530.0.9.41369.01
Eastern Plateau0-20%0.9490.0.0.0.0.949
21-40%2.9250.0.0.0.2.925
41-60%3.0250.0.0.0.3.025
61-80%15.2100.0.0.47115.610
over 80%78.230.0.5.11983.32
total100.220.0.5.519105.61
Western Pre-Alps0-20%0.31000.0.0.31000.670
21-40%0.8570.5721.6382.828
41-60%3.0270.9452.2306.018
61-80%4.0221.4387.11612.611
over 80%7.6141.5359.31218.36
total15.6104.32120.4840.33
Central Pre-Alps0-20%0.8500.0.0.4701.140
21-40%1.0450.0.1.5352.527
41-60%8.8141.2412.32812.311
61-80%16.3101.73313.51131.57
over 80%21.192.62724.0847.75
total47.955.61841.6595.12
Eastern Pre-Alps0-20%0.21000.0.0.4700.657
21-40%2.7270.0.1.0443.823
41-60%3.6230.0.2.1315.718
61-80%8.1150.7506.51715.310
over 80%18.391.93122.1842.34
total32.962.72632.1667.73
Northwestern Alps0-20%0.0.0.8500.8491.634
21-40%0.8500.6581.2402.727
41-60%3.3251.2413.6248.115
61-80%6.6172.6275.51814.710
over 80%6.9164.72012.51124.07
total17.61010.01323.5851.13
Central Alps0-20%0.0.0.21000.0.0.2100
21-40%0.4710.4700.21001.044
41-60%2.5260.4710.6573.522
61-80%2.9251.1401.5355.617
over 80%3.6212.7254.31910.710
total9.5124.8186.71520.95
Northeastern Alps0-20%0.0.0.0.0.5570.557
21-40%0.9440.4710.4701.632
41-60%1.5380.21001.6363.225
61-80%1.8331.7333.0256.516
over 80%3.4224.1217.21414.88
total7.6156.41612.71026.65
Southwestern Alps0-20%0.21000.0.0.21000.471
21-40%3.0261.0452.5296.417
41-60%6.3185.3199.91421.59
61-80%8.5157.91519.7936.16
over 80%6.6178.61419.3934.66
total24.5822.9851.6599.02
Southeastern Alps0-20%0.4710.0.0.21000.658
21-40%4.6211.2413.9239.714
41-60%14.0124.62116.21034.87
61-80%20.496.81719.6946.95
over 80%11.2134.32113.91129.47
total50.6517.01053.75121.32
Southern Alps0-20%0.21000.0.0.6580.850
21-40%0.4710.4711.4382.130
41-60%3.1252.0325.91811.013
61-80%5.3193.72321.1930.17
over 80%11.1135.91862.2479.13
total20.1911.91291.13123.12
Switzerland0-20%7.1171.0443.72411.813
21-40%20.4104.72113.61238.77
41-60%67.1515.91144.96127.94
61-80%136.4428.88104.74269.92
over 80%352.1239.77217.33609.11
total583.0190.14384.321057.41
© WSL, Swiss National Forest Inventory, 18.06.2020 #863494/329825
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