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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 | degree of cover of assured regeneration | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % |
n/a | less than 1% | 17.3 | 10 | 5.4 | 19 | 5.4 | 19 | 1.4 | 38 | 7.7 | 16 | 3.9 | 22 | 41.1 | 7 |
1-4% | 39.5 | 7 | 15.5 | 11 | 10.7 | 13 | 7.8 | 16 | 15.9 | 11 | 6.7 | 17 | 96.2 | 4 | |
5-9% | 43.8 | 6 | 16.2 | 11 | 9.3 | 14 | 9.5 | 14 | 8.6 | 15 | 7.3 | 16 | 94.8 | 4 | |
10-25% | 95.3 | 4 | 31.0 | 8 | 16.3 | 11 | 9.8 | 14 | 18.7 | 10 | 9.1 | 14 | 180.2 | 3 | |
26-50% | 72.8 | 5 | 13.7 | 12 | 9.3 | 14 | 4.1 | 22 | 7.2 | 16 | 3.6 | 23 | 110.7 | 4 | |
51-75% | 54.6 | 6 | 8.5 | 15 | 4.7 | 21 | 1.0 | 45 | 4.5 | 21 | 1.0 | 44 | 74.2 | 5 | |
76-100% | 41.2 | 7 | 2.5 | 29 | 1.8 | 33 | 0.6 | 58 | 0.8 | 50 | 0.4 | 71 | 47.3 | 6 | |
total | 364.5 | 1 | 92.7 | 4 | 57.4 | 5 | 34.3 | 7 | 63.5 | 5 | 32.0 | 7 | 644.5 | 1 | |
inside perimeter | less than 1% | 0.0 | . | 0.0 | . | 1.0 | 45 | 0.2 | 100 | 0.4 | 71 | 0.2 | 100 | 1.8 | 33 |
1-4% | 0.4 | 71 | 0.7 | 58 | 1.3 | 38 | 1.3 | 37 | 1.3 | 38 | 3.5 | 23 | 8.6 | 15 | |
5-9% | 1.5 | 35 | 0.9 | 50 | 1.0 | 45 | 2.0 | 32 | 0.6 | 58 | 2.6 | 27 | 8.6 | 15 | |
10-25% | 0.8 | 50 | 1.6 | 35 | 1.8 | 33 | 2.1 | 30 | 1.4 | 38 | 3.0 | 26 | 10.7 | 14 | |
26-50% | 0.2 | 100 | 0.2 | 100 | 1.4 | 38 | 1.2 | 41 | 0.0 | . | 1.0 | 45 | 4.0 | 22 | |
51-75% | 1.0 | 45 | 0.6 | 58 | 0.6 | 58 | 0.2 | 100 | 0.0 | . | 0.2 | 100 | 2.6 | 28 | |
76-100% | 0.0 | . | 0.6 | 58 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.0 | 45 | |
total | 3.9 | 22 | 4.5 | 21 | 7.3 | 16 | 7.0 | 16 | 3.8 | 23 | 10.8 | 13 | 37.3 | 7 | |
outside perimeter | less than 1% | 1.6 | 35 | 4.6 | 21 | 7.1 | 16 | 5.6 | 18 | 14.2 | 11 | 12.1 | 12 | 45.3 | 6 |
1-4% | 4.4 | 21 | 14.5 | 11 | 10.1 | 13 | 18.9 | 9 | 17.0 | 10 | 27.8 | 8 | 92.7 | 4 | |
5-9% | 8.1 | 15 | 18.2 | 10 | 7.0 | 16 | 14.8 | 11 | 13.1 | 12 | 25.3 | 8 | 86.5 | 5 | |
10-25% | 17.5 | 10 | 38.5 | 7 | 18.4 | 10 | 22.6 | 8 | 19.6 | 9 | 27.4 | 8 | 143.9 | 3 | |
26-50% | 12.0 | 13 | 16.5 | 11 | 13.9 | 11 | 9.1 | 14 | 9.4 | 14 | 10.1 | 14 | 71.1 | 5 | |
51-75% | 7.7 | 16 | 7.8 | 16 | 4.2 | 22 | 1.4 | 38 | 2.1 | 31 | 3.1 | 25 | 26.4 | 9 | |
76-100% | 3.0 | 26 | 3.9 | 23 | 2.2 | 30 | 0.0 | . | 0.2 | 100 | 1.4 | 38 | 10.7 | 14 | |
total | 54.3 | 6 | 104.2 | 3 | 62.8 | 4 | 72.5 | 3 | 75.6 | 4 | 107.1 | 3 | 476.6 | 1 | |
total | less than 1% | 19.0 | 10 | 10.0 | 14 | 13.4 | 11 | 7.2 | 16 | 22.3 | 9 | 16.2 | 10 | 88.2 | 5 |
1-4% | 44.3 | 6 | 30.6 | 8 | 22.2 | 9 | 28.0 | 7 | 34.3 | 7 | 38.1 | 6 | 197.5 | 3 | |
5-9% | 53.5 | 6 | 35.3 | 7 | 17.3 | 10 | 26.3 | 8 | 22.3 | 9 | 35.2 | 7 | 189.9 | 3 | |
10-25% | 113.6 | 4 | 71.1 | 4 | 36.4 | 7 | 34.6 | 6 | 39.6 | 6 | 39.6 | 6 | 334.8 | 2 | |
26-50% | 85.0 | 4 | 30.5 | 8 | 24.6 | 8 | 14.4 | 11 | 16.7 | 10 | 14.6 | 11 | 185.8 | 3 | |
51-75% | 63.3 | 5 | 16.9 | 11 | 9.5 | 14 | 2.7 | 27 | 6.5 | 17 | 4.3 | 21 | 103.2 | 4 | |
76-100% | 44.2 | 6 | 7.1 | 17 | 4.1 | 22 | 0.6 | 58 | 1.0 | 45 | 1.9 | 31 | 59.0 | 6 | |
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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