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protection forest region | |||||||||||||||
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Jura + Plateau | Northwestern Alps | Northeastern Alps | Southwestern Alps | Southeastern Alps | Southern Alps | Switzerland | |||||||||
avalanches SilvaProtect | type of next treatment (interview survey) | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % | 1000 ha | ± % |
n/a | no treatment | 41.9 | 6 | 35.4 | 7 | 24.4 | 8 | 28.1 | 7 | 39.5 | 6 | 26.4 | 8 | 195.6 | 3 |
tending | 55.1 | 5 | 9.0 | 14 | 6.7 | 16 | 2.0 | 30 | 1.6 | 33 | 0.6 | 58 | 74.9 | 4 | |
thinning | 123.0 | 3 | 11.5 | 12 | 7.0 | 16 | 2.1 | 29 | 4.2 | 20 | 2.5 | 27 | 150.3 | 3 | |
establishment cut | 52.9 | 5 | 14.4 | 11 | 10.1 | 13 | 0.5 | 58 | 5.3 | 18 | 0.5 | 58 | 83.7 | 4 | |
removal cut | 28.4 | 8 | 5.9 | 17 | 4.2 | 20 | 0.2 | 100 | 2.0 | 30 | 0.7 | 50 | 41.4 | 6 | |
plentering | 24.3 | 8 | 4.2 | 21 | 0.2 | 100 | 0.0 | . | 0.5 | 58 | 0.2 | 100 | 29.5 | 7 | |
thinning of mountain forest | 0.6 | 58 | 6.2 | 16 | 1.4 | 35 | 3.2 | 23 | 9.8 | 13 | 0.2 | 100 | 21.4 | 9 | |
coppice cut | 0.5 | 58 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.9 | 45 | 1.8 | 32 | |
conversion | 7.8 | 15 | 1.1 | 41 | 1.3 | 38 | 0.0 | . | 0.0 | . | 0.0 | . | 10.2 | 13 | |
transformation | 0.9 | 45 | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.2 | 100 | 0.0 | . | 1.2 | 38 | |
sanitary felling | 5.7 | 18 | 0.7 | 50 | 0.7 | 50 | 0.0 | . | 0.2 | 100 | 0.0 | . | 7.4 | 16 | |
plentering in broadleaf forest | 17.7 | 10 | 0.0 | . | 0.5 | 58 | 0.0 | . | 0.0 | . | 0.2 | 100 | 18.4 | 10 | |
tending of forest edge | 5.0 | 19 | 0.2 | 100 | 1.2 | 38 | 0.3 | 71 | 0.5 | 58 | 0.2 | 100 | 7.4 | 15 | |
planting | 1.3 | 38 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 1.5 | 35 | |
agrosilvicultural treatments | 4.5 | 20 | 2.2 | 29 | 1.6 | 33 | 0.4 | 71 | 1.1 | 41 | 0.6 | 58 | 10.3 | 13 | |
total | 369.7 | 1 | 91.1 | 4 | 59.4 | 5 | 36.8 | 6 | 65.1 | 4 | 32.8 | 7 | 654.9 | 1 | |
inside perimeter | no treatment | 1.8 | 32 | 7.4 | 15 | 7.4 | 15 | 12.3 | 11 | 10.1 | 13 | 9.1 | 13 | 48.0 | 6 |
tending | 0.2 | 100 | 2.1 | 29 | 1.3 | 38 | 0.9 | 45 | 0.3 | 71 | 0.2 | 100 | 5.0 | 19 | |
thinning | 0.9 | 45 | 2.6 | 27 | 1.7 | 32 | 1.2 | 37 | 0.7 | 50 | 0.9 | 45 | 8.0 | 15 | |
establishment cut | 1.1 | 40 | 2.9 | 25 | 2.4 | 26 | 1.7 | 31 | 1.8 | 31 | 0.4 | 71 | 10.2 | 13 | |
removal cut | 0.0 | . | 0.9 | 45 | 0.2 | 100 | 0.5 | 57 | 0.7 | 50 | 0.7 | 50 | 3.0 | 24 | |
plentering | 0.6 | 58 | 0.2 | 100 | 0.2 | 100 | 0.3 | 71 | 0.0 | . | 0.0 | . | 1.3 | 38 | |
thinning of mountain forest | 0.0 | . | 4.7 | 19 | 1.2 | 38 | 6.8 | 15 | 5.7 | 17 | 2.6 | 26 | 21.1 | 9 | |
coppice cut | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.2 | 100 | |
conversion | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
transformation | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.2 | 100 | |
sanitary felling | 0.2 | 100 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.4 | 71 | |
plentering in broadleaf forest | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | |
tending of forest edge | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
planting | 0.0 | . | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.4 | 71 | |
agrosilvicultural treatments | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.3 | 71 | 0.2 | 100 | 0.7 | 50 | |
total | 4.7 | 19 | 21.5 | 9 | 14.5 | 10 | 23.9 | 8 | 19.7 | 9 | 14.1 | 11 | 98.5 | 4 | |
outside perimeter | no treatment | 11.2 | 12 | 29.3 | 7 | 16.2 | 10 | 30.9 | 7 | 27.5 | 7 | 81.3 | 3 | 196.4 | 3 |
tending | 5.0 | 19 | 6.6 | 16 | 5.8 | 17 | 1.4 | 35 | 4.4 | 20 | 0.6 | 58 | 23.8 | 9 | |
thinning | 17.3 | 10 | 15.1 | 10 | 9.4 | 13 | 5.1 | 18 | 3.6 | 22 | 7.9 | 15 | 58.4 | 5 | |
establishment cut | 6.0 | 17 | 12.7 | 12 | 16.5 | 9 | 3.6 | 21 | 4.7 | 19 | 2.3 | 27 | 45.8 | 6 | |
removal cut | 5.8 | 17 | 5.7 | 18 | 3.1 | 23 | 1.0 | 41 | 4.7 | 19 | 3.2 | 23 | 23.6 | 9 | |
plentering | 1.8 | 32 | 5.7 | 17 | 0.8 | 45 | 0.2 | 100 | 0.5 | 57 | 0.0 | . | 9.0 | 14 | |
thinning of mountain forest | 0.0 | . | 10.7 | 12 | 1.5 | 33 | 10.1 | 13 | 13.5 | 11 | 5.5 | 17 | 41.4 | 6 | |
coppice cut | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 2.0 | 30 | 2.2 | 28 | |
conversion | 1.8 | 32 | 2.5 | 27 | 0.3 | 71 | 0.0 | . | 0.0 | . | 0.4 | 70 | 4.9 | 19 | |
transformation | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.2 | 100 | |
sanitary felling | 0.7 | 50 | 0.9 | 45 | 0.9 | 45 | 0.4 | 71 | 0.2 | 100 | 0.4 | 71 | 3.4 | 23 | |
plentering in broadleaf forest | 0.7 | 50 | 0.0 | . | 0.5 | 58 | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.4 | 35 | |
tending of forest edge | 0.7 | 50 | 0.0 | . | 0.9 | 45 | 0.0 | . | 0.4 | 71 | 0.2 | 100 | 2.1 | 29 | |
planting | 0.2 | 100 | 1.2 | 38 | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 1.8 | 31 | |
agrosilvicultural treatments | 0.9 | 45 | 1.2 | 38 | 0.7 | 50 | 1.4 | 35 | 0.7 | 50 | 1.9 | 30 | 6.8 | 16 | |
total | 52.1 | 5 | 91.6 | 3 | 57.1 | 4 | 54.0 | 4 | 60.3 | 4 | 106.0 | 3 | 421.1 | 2 | |
total | no treatment | 54.9 | 5 | 72.1 | 4 | 48.0 | 5 | 71.2 | 4 | 77.0 | 4 | 116.7 | 3 | 440.0 | 2 |
tending | 60.2 | 5 | 17.7 | 9 | 13.8 | 11 | 4.3 | 20 | 6.4 | 16 | 1.3 | 38 | 103.7 | 4 | |
thinning | 141.3 | 3 | 29.1 | 7 | 18.1 | 9 | 8.4 | 14 | 8.5 | 14 | 11.3 | 12 | 216.7 | 2 | |
establishment cut | 60.1 | 5 | 29.9 | 7 | 29.0 | 7 | 5.8 | 17 | 11.8 | 12 | 3.2 | 23 | 139.7 | 3 | |
removal cut | 34.2 | 7 | 12.5 | 12 | 7.4 | 15 | 1.7 | 31 | 7.4 | 15 | 4.6 | 19 | 68.0 | 5 | |
plentering | 26.7 | 8 | 10.1 | 13 | 1.2 | 38 | 0.5 | 58 | 1.1 | 41 | 0.2 | 100 | 39.7 | 6 | |
thinning of mountain forest | 0.6 | 58 | 21.6 | 8 | 4.1 | 20 | 20.0 | 8 | 29.1 | 7 | 8.3 | 14 | 83.8 | 4 | |
coppice cut | 0.5 | 58 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.3 | 71 | 3.1 | 24 | 4.1 | 21 | |
conversion | 9.6 | 13 | 3.6 | 22 | 1.6 | 33 | 0.0 | . | 0.0 | . | 0.4 | 70 | 15.1 | 11 | |
transformation | 0.9 | 45 | 0.0 | . | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 0.2 | 100 | 1.6 | 33 | |
sanitary felling | 6.6 | 16 | 1.8 | 32 | 1.6 | 33 | 0.4 | 71 | 0.4 | 71 | 0.4 | 71 | 11.1 | 13 | |
plentering in broadleaf forest | 18.4 | 10 | 0.0 | . | 1.2 | 38 | 0.0 | . | 0.0 | . | 0.3 | 71 | 19.9 | 9 | |
tending of forest edge | 5.7 | 18 | 0.2 | 100 | 2.1 | 29 | 0.3 | 71 | 0.9 | 45 | 0.4 | 71 | 9.6 | 14 | |
planting | 1.5 | 35 | 1.8 | 31 | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.0 | . | 3.6 | 22 | |
agrosilvicultural treatments | 5.4 | 18 | 3.6 | 22 | 2.3 | 28 | 1.7 | 31 | 2.1 | 29 | 2.6 | 26 | 17.8 | 10 | |
total | 426.6 | 1 | 204.2 | 1 | 131.0 | 2 | 114.7 | 2 | 145.1 | 2 | 152.9 | 2 | 1174.5 | 0 |
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