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protection forest region | |||||||||||||||
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Jura + Plateau | Northwestern Alps | Northeastern Alps | Southwestern Alps | Southeastern Alps | Southern Alps | Switzerland | |||||||||
rockfall SilvaProtect | stem count/ha (DBH >= 12cm, classified) | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % |
n/a | 0-100 stems/ha | 44.4 | 6 | 12.8 | 12 | 9.6 | 14 | 8.6 | 15 | 7.7 | 16 | 6.4 | 17 | 89.6 | 4 |
101-200 stems/ha | 57.8 | 5 | 11.0 | 13 | 5.8 | 18 | 7.3 | 16 | 10.1 | 14 | 4.1 | 22 | 96.2 | 4 | |
201-300 stems/ha | 62.7 | 5 | 14.8 | 11 | 9.4 | 14 | 2.4 | 29 | 10.0 | 14 | 4.8 | 20 | 104.1 | 4 | |
301-400 stems/ha | 59.9 | 5 | 16.7 | 11 | 8.0 | 15 | 4.2 | 22 | 8.3 | 15 | 4.0 | 22 | 101.1 | 4 | |
401-500 stems/ha | 43.0 | 6 | 11.1 | 13 | 6.5 | 17 | 3.8 | 23 | 9.8 | 14 | 2.2 | 30 | 76.4 | 5 | |
501-600 stems/ha | 36.2 | 7 | 6.3 | 18 | 5.7 | 18 | 1.8 | 33 | 5.4 | 19 | 2.8 | 27 | 58.3 | 6 | |
more than 600 stems/ha | 60.5 | 5 | 20.0 | 10 | 12.3 | 12 | 6.1 | 18 | 12.3 | 12 | 7.7 | 16 | 118.8 | 4 | |
total | 364.5 | 1 | 92.7 | 4 | 57.4 | 5 | 34.3 | 7 | 63.5 | 5 | 32.0 | 7 | 644.5 | 1 | |
inside perimeter | 0-100 stems/ha | 0.2 | 100 | 0.6 | 58 | 0.8 | 50 | 0.6 | 58 | 0.6 | 58 | 1.0 | 45 | 3.8 | 23 |
101-200 stems/ha | 0.8 | 50 | 0.4 | 71 | 1.0 | 45 | 0.4 | 71 | 0.4 | 71 | 1.6 | 35 | 4.6 | 21 | |
201-300 stems/ha | 0.6 | 58 | 0.4 | 71 | 1.2 | 41 | 1.4 | 38 | 1.0 | 45 | 1.4 | 38 | 6.0 | 18 | |
301-400 stems/ha | 0.4 | 71 | 0.2 | 100 | 0.6 | 58 | 1.0 | 45 | 0.5 | 58 | 1.6 | 35 | 4.3 | 21 | |
401-500 stems/ha | 0.0 | . | 0.8 | 50 | 1.0 | 45 | 1.4 | 38 | 0.2 | 100 | 1.0 | 45 | 4.4 | 21 | |
501-600 stems/ha | 0.8 | 50 | 0.6 | 58 | 1.4 | 38 | 0.8 | 50 | 0.2 | 100 | 0.8 | 50 | 4.6 | 21 | |
more than 600 stems/ha | 1.1 | 41 | 1.5 | 38 | 1.4 | 38 | 1.5 | 35 | 0.7 | 50 | 3.4 | 24 | 9.7 | 14 | |
total | 3.9 | 22 | 4.5 | 21 | 7.3 | 16 | 7.0 | 16 | 3.8 | 23 | 10.8 | 13 | 37.3 | 7 | |
outside perimeter | 0-100 stems/ha | 2.6 | 28 | 8.9 | 15 | 4.8 | 20 | 6.1 | 18 | 8.0 | 16 | 12.0 | 12 | 42.4 | 7 |
101-200 stems/ha | 8.5 | 15 | 13.6 | 12 | 5.9 | 18 | 8.6 | 15 | 10.5 | 13 | 13.7 | 12 | 60.8 | 6 | |
201-300 stems/ha | 10.3 | 14 | 14.3 | 12 | 10.0 | 14 | 13.0 | 12 | 13.3 | 12 | 14.3 | 11 | 75.1 | 5 | |
301-400 stems/ha | 6.9 | 17 | 15.7 | 11 | 10.1 | 13 | 9.9 | 13 | 14.2 | 11 | 16.3 | 11 | 73.0 | 5 | |
401-500 stems/ha | 9.5 | 14 | 13.4 | 12 | 7.7 | 15 | 10.1 | 13 | 7.8 | 15 | 15.2 | 11 | 63.7 | 5 | |
501-600 stems/ha | 5.0 | 20 | 12.5 | 12 | 7.2 | 16 | 6.2 | 17 | 7.1 | 16 | 7.8 | 16 | 45.8 | 6 | |
more than 600 stems/ha | 11.6 | 13 | 25.7 | 8 | 17.2 | 10 | 18.6 | 9 | 14.8 | 11 | 27.9 | 8 | 115.8 | 4 | |
total | 54.3 | 6 | 104.2 | 3 | 62.8 | 4 | 72.5 | 3 | 75.6 | 4 | 107.1 | 3 | 476.6 | 1 | |
total | 0-100 stems/ha | 47.2 | 6 | 22.4 | 9 | 15.2 | 11 | 15.3 | 11 | 16.3 | 11 | 19.4 | 10 | 135.8 | 4 |
101-200 stems/ha | 67.2 | 5 | 25.0 | 9 | 12.6 | 12 | 16.3 | 11 | 21.1 | 9 | 19.4 | 10 | 161.6 | 3 | |
201-300 stems/ha | 73.6 | 5 | 29.5 | 8 | 20.6 | 9 | 16.8 | 10 | 24.3 | 8 | 20.4 | 9 | 185.2 | 3 | |
301-400 stems/ha | 67.2 | 5 | 32.6 | 7 | 18.6 | 9 | 15.1 | 11 | 23.0 | 9 | 21.9 | 9 | 178.4 | 3 | |
401-500 stems/ha | 52.5 | 6 | 25.4 | 8 | 15.2 | 11 | 15.3 | 11 | 17.7 | 10 | 18.4 | 10 | 144.5 | 3 | |
501-600 stems/ha | 41.9 | 6 | 19.4 | 10 | 14.4 | 11 | 8.8 | 14 | 12.6 | 12 | 11.4 | 13 | 108.6 | 4 | |
more than 600 stems/ha | 73.2 | 5 | 47.1 | 6 | 30.9 | 7 | 26.2 | 8 | 27.8 | 8 | 39.0 | 6 | 244.3 | 3 | |
total | 422.8 | 1 | 201.4 | 1 | 127.5 | 2 | 113.8 | 2 | 142.8 | 2 | 150.0 | 2 | 1158.4 | 1 |
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