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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 | 41.4 | 7 | 36.2 | 7 | 24.8 | 8 | 26.9 | 8 | 39.7 | 6 | 27.0 | 8 | 196.0 | 3 |
tending | 54.9 | 5 | 9.0 | 15 | 6.1 | 18 | 1.9 | 33 | 1.4 | 38 | 0.4 | 71 | 73.7 | 5 | |
thinning | 123.7 | 3 | 11.3 | 13 | 6.7 | 17 | 2.0 | 31 | 4.3 | 21 | 2.4 | 29 | 150.4 | 3 | |
establishment cut | 53.3 | 6 | 15.2 | 11 | 10.2 | 13 | 0.6 | 58 | 5.5 | 19 | 0.6 | 58 | 85.5 | 5 | |
removal cut | 28.7 | 8 | 6.7 | 17 | 4.3 | 21 | 0.2 | 100 | 2.2 | 30 | 0.8 | 50 | 43.0 | 7 | |
plentering | 25.1 | 8 | 4.6 | 21 | 0.2 | 100 | 0.0 | . | 0.6 | 58 | 0.2 | 100 | 30.8 | 8 | |
thinning of mountain forest | 0.4 | 71 | 6.6 | 17 | 1.3 | 38 | 3.2 | 25 | 9.4 | 14 | 0.2 | 100 | 21.1 | 9 | |
coppice cut | 0.4 | 71 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.0 | 45 | 1.8 | 33 | |
conversion | 7.9 | 16 | 1.2 | 41 | 1.0 | 45 | 0.0 | . | 0.0 | . | 0.0 | . | 10.2 | 14 | |
transformation | 0.8 | 50 | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 1.0 | 45 | |
sanitary felling | 5.4 | 19 | 0.8 | 50 | 0.8 | 50 | 0.0 | . | 0.2 | 100 | 0.0 | . | 7.2 | 17 | |
plentering in broadleaf forest | 17.3 | 10 | 0.0 | . | 0.6 | 58 | 0.0 | . | 0.0 | . | 0.2 | 100 | 18.1 | 10 | |
tending of forest edge | 5.2 | 20 | 0.2 | 100 | 1.4 | 38 | 0.2 | 100 | 0.4 | 71 | 0.2 | 100 | 7.5 | 16 | |
planting | 1.3 | 41 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 1.5 | 38 | |
agrosilvicultural treatments | 4.4 | 21 | 2.5 | 29 | 1.2 | 41 | 0.4 | 71 | 1.2 | 41 | 0.6 | 58 | 10.4 | 14 | |
total | 370.3 | 1 | 94.9 | 4 | 58.8 | 5 | 35.3 | 7 | 65.1 | 5 | 33.6 | 7 | 658.1 | 1 | |
inside perimeter | no treatment | 1.8 | 33 | 6.9 | 17 | 7.0 | 17 | 11.8 | 12 | 9.7 | 14 | 8.5 | 15 | 45.7 | 6 |
tending | 0.2 | 100 | 2.3 | 30 | 1.2 | 41 | 0.8 | 50 | 0.4 | 71 | 0.2 | 100 | 5.0 | 20 | |
thinning | 0.8 | 50 | 2.8 | 27 | 2.0 | 32 | 1.3 | 37 | 0.8 | 50 | 1.0 | 45 | 8.7 | 15 | |
establishment cut | 1.1 | 44 | 2.4 | 29 | 2.5 | 27 | 1.9 | 31 | 1.9 | 31 | 0.4 | 71 | 10.2 | 14 | |
removal cut | 0.0 | . | 1.0 | 45 | 0.2 | 100 | 0.6 | 57 | 0.8 | 50 | 0.8 | 50 | 3.3 | 24 | |
plentering | 0.6 | 58 | 0.2 | 100 | 0.2 | 100 | 0.4 | 71 | 0.0 | . | 0.0 | . | 1.4 | 38 | |
thinning of mountain forest | 0.0 | . | 4.3 | 21 | 1.4 | 38 | 6.9 | 16 | 5.4 | 19 | 2.6 | 27 | 20.5 | 10 | |
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 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | |
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 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.4 | 71 | 0.2 | 100 | 0.6 | 58 | |
total | 4.7 | 20 | 20.6 | 9 | 14.6 | 11 | 23.7 | 8 | 19.4 | 9 | 13.8 | 11 | 96.8 | 4 | |
outside perimeter | no treatment | 11.6 | 13 | 28.5 | 8 | 16.6 | 10 | 32.7 | 7 | 27.1 | 8 | 81.5 | 4 | 198.0 | 3 |
tending | 4.6 | 20 | 6.1 | 18 | 5.9 | 18 | 1.4 | 38 | 5.0 | 20 | 0.6 | 58 | 23.7 | 9 | |
thinning | 17.7 | 10 | 14.6 | 11 | 9.8 | 14 | 4.8 | 20 | 3.7 | 23 | 7.7 | 16 | 58.2 | 6 | |
establishment cut | 6.2 | 18 | 12.9 | 12 | 16.0 | 10 | 3.6 | 22 | 5.0 | 20 | 2.6 | 27 | 46.2 | 6 | |
removal cut | 5.9 | 18 | 5.4 | 19 | 2.9 | 26 | 1.1 | 41 | 4.6 | 21 | 3.4 | 24 | 23.3 | 9 | |
plentering | 2.0 | 32 | 5.7 | 19 | 0.4 | 71 | 0.2 | 100 | 0.6 | 57 | 0.0 | . | 8.9 | 15 | |
thinning of mountain forest | 0.0 | . | 11.1 | 13 | 1.7 | 33 | 10.2 | 13 | 13.6 | 11 | 5.3 | 19 | 42.0 | 7 | |
coppice cut | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.9 | 33 | 2.1 | 31 | |
conversion | 1.4 | 38 | 2.4 | 29 | 0.4 | 71 | 0.0 | . | 0.0 | . | 0.2 | 100 | 4.4 | 21 | |
transformation | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.2 | 100 | 0.2 | 100 | |
sanitary felling | 0.8 | 50 | 1.0 | 45 | 0.8 | 50 | 0.2 | 100 | 0.2 | 100 | 0.4 | 71 | 3.4 | 24 | |
plentering in broadleaf forest | 0.8 | 50 | 0.0 | . | 0.6 | 58 | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.5 | 35 | |
tending of forest edge | 0.6 | 58 | 0.0 | . | 0.8 | 50 | 0.0 | . | 0.4 | 71 | 0.2 | 100 | 2.0 | 32 | |
planting | 0.2 | 100 | 1.0 | 45 | 0.4 | 70 | 0.0 | . | 0.0 | . | 0.0 | . | 1.6 | 35 | |
agrosilvicultural treatments | 0.6 | 58 | 1.4 | 38 | 0.8 | 50 | 1.6 | 35 | 0.8 | 50 | 2.1 | 30 | 7.2 | 16 | |
total | 52.4 | 6 | 90.1 | 4 | 57.0 | 5 | 55.8 | 4 | 61.1 | 5 | 106.3 | 3 | 422.7 | 2 | |
total | no treatment | 54.8 | 6 | 71.7 | 5 | 48.4 | 5 | 71.4 | 4 | 76.4 | 4 | 117.0 | 3 | 439.8 | 2 |
tending | 59.8 | 5 | 17.4 | 10 | 13.2 | 12 | 4.0 | 22 | 6.8 | 17 | 1.2 | 41 | 102.4 | 4 | |
thinning | 142.2 | 3 | 28.7 | 8 | 18.4 | 10 | 8.1 | 15 | 8.8 | 14 | 11.0 | 13 | 217.3 | 3 | |
establishment cut | 60.6 | 5 | 30.5 | 8 | 28.7 | 7 | 6.1 | 17 | 12.4 | 12 | 3.6 | 23 | 141.9 | 3 | |
removal cut | 34.6 | 7 | 13.2 | 12 | 7.4 | 16 | 1.9 | 31 | 7.6 | 16 | 4.9 | 20 | 69.6 | 5 | |
plentering | 27.8 | 8 | 10.5 | 14 | 0.8 | 50 | 0.6 | 58 | 1.2 | 41 | 0.2 | 100 | 41.1 | 7 | |
thinning of mountain forest | 0.4 | 71 | 22.1 | 9 | 4.5 | 21 | 20.3 | 9 | 28.3 | 8 | 8.0 | 15 | 83.6 | 4 | |
coppice cut | 0.4 | 71 | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.4 | 71 | 3.1 | 25 | 4.0 | 22 | |
conversion | 9.3 | 14 | 3.6 | 23 | 1.4 | 38 | 0.0 | . | 0.0 | . | 0.2 | 100 | 14.5 | 12 | |
transformation | 0.8 | 50 | 0.0 | . | 0.2 | 100 | 0.0 | . | 0.0 | . | 0.2 | 100 | 1.2 | 41 | |
sanitary felling | 6.4 | 18 | 2.0 | 32 | 1.7 | 35 | 0.2 | 100 | 0.4 | 71 | 0.4 | 71 | 11.0 | 13 | |
plentering in broadleaf forest | 18.1 | 10 | 0.0 | . | 1.3 | 38 | 0.0 | . | 0.0 | . | 0.4 | 71 | 19.8 | 10 | |
tending of forest edge | 5.8 | 19 | 0.2 | 100 | 2.2 | 30 | 0.2 | 100 | 0.8 | 50 | 0.4 | 71 | 9.5 | 14 | |
planting | 1.4 | 38 | 1.6 | 35 | 0.4 | 70 | 0.0 | . | 0.0 | . | 0.0 | . | 3.5 | 24 | |
agrosilvicultural treatments | 5.0 | 20 | 3.9 | 23 | 2.0 | 32 | 2.0 | 31 | 2.4 | 29 | 2.9 | 26 | 18.2 | 10 | |
total | 427.3 | 1 | 205.6 | 1 | 130.4 | 2 | 114.8 | 2 | 145.6 | 2 | 153.7 | 2 | 1177.5 | 1 |
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