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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 >= 36cm, classified) | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % |
n/a | 0-100 stems/ha | 211.2 | 2 | 53.0 | 5 | 31.0 | 7 | 28.4 | 8 | 41.8 | 6 | 24.8 | 8 | 390.2 | 2 |
101-200 stems/ha | 118.0 | 3 | 24.4 | 9 | 15.6 | 11 | 5.0 | 19 | 15.8 | 11 | 6.4 | 17 | 185.2 | 3 | |
201-300 stems/ha | 29.9 | 8 | 10.3 | 13 | 8.9 | 14 | 0.8 | 50 | 4.5 | 21 | 0.8 | 50 | 55.2 | 6 | |
301-400 stems/ha | 3.8 | 23 | 3.9 | 23 | 1.1 | 41 | 0.2 | 100 | 1.4 | 38 | 0.0 | . | 10.4 | 14 | |
401-500 stems/ha | 1.2 | 41 | 1.2 | 41 | 0.8 | 50 | 0.0 | . | 0.0 | . | 0.0 | . | 3.2 | 25 | |
501- 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
more than 600 stems/ha | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.4 | 71 | |
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 | 1.9 | 32 | 2.9 | 27 | 2.9 | 27 | 4.8 | 20 | 1.6 | 35 | 8.7 | 15 | 22.7 | 9 |
101-200 stems/ha | 1.8 | 33 | 1.0 | 45 | 2.9 | 26 | 1.7 | 33 | 2.0 | 32 | 1.6 | 35 | 10.9 | 13 | |
201-300 stems/ha | 0.2 | 100 | 0.4 | 71 | 1.3 | 37 | 0.2 | 100 | 0.2 | 100 | 0.6 | 57 | 2.8 | 26 | |
301-400 stems/ha | 0.0 | . | 0.2 | 100 | 0.2 | 100 | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.8 | 50 | |
401-500 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
501- 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
more than 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
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 | 25.0 | 9 | 52.5 | 5 | 30.0 | 7 | 42.0 | 6 | 43.1 | 6 | 75.7 | 4 | 268.3 | 2 |
101-200 stems/ha | 24.9 | 9 | 36.6 | 7 | 20.7 | 9 | 22.3 | 8 | 25.4 | 8 | 24.7 | 8 | 154.6 | 3 | |
201-300 stems/ha | 3.8 | 23 | 12.3 | 12 | 10.3 | 13 | 7.0 | 15 | 6.1 | 17 | 5.6 | 18 | 45.1 | 6 | |
301-400 stems/ha | 0.6 | 58 | 2.4 | 29 | 1.7 | 33 | 0.9 | 44 | 0.8 | 50 | 1.2 | 41 | 7.7 | 16 | |
401-500 stems/ha | 0.0 | . | 0.4 | 71 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.6 | 58 | |
501- 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
more than 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 0.4 | 71 | |
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 | 238.2 | 2 | 108.3 | 3 | 63.9 | 4 | 75.2 | 3 | 86.5 | 3 | 109.1 | 3 | 681.2 | 1 |
101-200 stems/ha | 144.6 | 3 | 62.0 | 5 | 39.2 | 6 | 29.0 | 7 | 43.1 | 5 | 32.7 | 7 | 350.7 | 2 | |
201-300 stems/ha | 33.9 | 7 | 23.0 | 8 | 20.5 | 9 | 8.0 | 14 | 10.8 | 13 | 6.9 | 16 | 103.1 | 4 | |
301-400 stems/ha | 4.4 | 21 | 6.5 | 17 | 3.0 | 25 | 1.5 | 35 | 2.2 | 30 | 1.2 | 41 | 18.8 | 10 | |
401-500 stems/ha | 1.2 | 41 | 1.6 | 35 | 1.0 | 45 | 0.0 | . | 0.0 | . | 0.0 | . | 3.8 | 23 | |
501- 600 stems/ha | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
more than 600 stems/ha | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 0.8 | 50 | |
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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