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NFI4
forest area
urgency of next treatment (interview survey) · time of last treatment (classes of 10 years)
unit of reference: economic region
unit: 1000 ha
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
urgency of next treatment (interview survey)
0-1 year2-5 years6-10 years11-20 years> 20 yearstotal
economic regiontime of last treatment (classes of 10 years)1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago10.81326.8829.3713.0124.72084.63
11-20 years ago5.0198.6158.0153.9223.72329.37
21-30 years ago1.8332.9263.1252.8273.12513.711
31-40 years ago0.6582.8271.8330.8503.7239.714
41-50 years ago0.8500.9451.3380.4712.5286.018
over 50 years ago1.1410.21000.6581.2416.4179.514
total20.2942.2644.0622.0924.28152.71
Eastern Juran/a0.0.0.0.0.0.0.21000.0.0.2100
less than 10 years ago3.52411.0127.5154.1220.65826.76
11-20 years ago1.8336.4173.2250.6580.75712.711
21-30 years ago0.4701.6350.4710.4710.21003.125
31-40 years ago0.0.0.4700.4710.21000.6581.735
41-50 years ago0.21000.0.0.0.0.4700.21000.850
over 50 years ago0.21000.21000.21000.31001.3402.231
total6.21719.6811.7126.2173.62347.42
Western Plateaun/a0.0.0.21000.0.0.0.0.0.0.2100
less than 10 years ago6.01713.2117.9152.9261.34031.45
11-20 years ago1.3412.5282.2311.2400.8508.015
21-30 years ago0.21000.6582.0320.6580.8504.322
31-40 years ago0.21000.4710.4710.6570.6582.229
41-50 years ago0.0.0.4710.5700.4710.21001.537
over 50 years ago0.0.0.0.0.6580.0.1.1441.735
total7.71517.4913.5115.8184.92049.22
Central Plateaun/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago6.01725.2717.593.0251.73353.43
11-20 years ago2.1305.6182.4270.4711.04411.512
21-30 years ago0.0.1.4370.21000.21000.4712.130
31-40 years ago0.4710.6580.0.0.0.0.4711.437
41-50 years ago0.0.0.0.0.0.0.0.0.0.0.0.
over 50 years ago0.21000.21000.4700.21000.4701.437
total8.71432.9620.583.8223.82269.71
Eastern Plateaun/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago8.41537.9625.287.4162.13081.03
11-20 years ago3.6235.6183.8221.8331.83316.710
21-30 years ago0.8501.4372.5281.0450.8506.617
31-40 years ago0.0.0.4711.2410.0.0.4712.031
41-50 years ago0.21000.4710.0.0.0.0.4711.045
over 50 years ago0.0.0.0.0.21000.21001.2411.635
total13.01245.8532.9610.4136.617108.91
Western Pre-Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago2.0343.4254.1225.4182.82817.79
11-20 years ago1.1452.1303.8220.6591.8359.414
21-30 years ago0.21001.1402.2300.8501.2415.418
31-40 years ago0.21000.6571.4380.6600.7503.523
41-50 years ago0.21000.6570.6571.1410.6583.024
over 50 years ago0.6580.0.0.8510.0.3.7235.120
total4.2227.71513.0118.51410.71244.23
Central Pre-Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago2.42910.51318.31012.7125.71849.75
11-20 years ago1.8356.6177.3166.4172.62824.68
21-30 years ago1.0451.3412.3301.2412.1307.916
31-40 years ago0.6581.4401.5380.4712.0315.918
41-50 years ago0.0.0.5570.5700.8502.3294.222
over 50 years ago0.21000.21000.9501.8338.01511.113
total6.01820.6930.7723.3822.88103.42
Eastern Pre-Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago2.6277.11712.8126.2184.42133.16
11-20 years ago1.2416.0184.7203.1252.42917.510
21-30 years ago0.6582.4291.0451.6351.2416.817
31-40 years ago0.0.0.5581.4381.1402.4295.418
41-50 years ago0.21000.21000.4711.4382.2304.321
over 50 years ago0.21000.4710.4711.0455.6187.616
total4.82016.61020.6914.51118.31074.82
Northwestern Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.8503.5243.8224.1217.01619.49
11-20 years ago0.9501.4372.8261.8332.6289.514
21-30 years ago0.7571.0451.9313.6232.7289.913
31-40 years ago0.21000.21000.6581.0442.5294.521
41-50 years ago0.4710.4701.1410.8502.1314.920
over 50 years ago0.21001.1411.5371.6358.71513.111
total3.2257.81511.71213.11125.6861.43
Central Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.4712.0312.1291.7331.2407.414
11-20 years ago0.6581.0441.6351.5340.9445.617
21-30 years ago0.21000.21001.0451.2401.6354.221
31-40 years ago0.0.0.6580.0.0.4711.2402.130
41-50 years ago0.21000.21000.4710.21000.6561.535
over 50 years ago0.21000.4690.0.0.8504.7196.017
total1.6354.3195.1185.81610.21226.94
Northeastern Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago1.1412.6261.5381.8332.6289.513
11-20 years ago0.5581.0451.6331.0452.1306.216
21-30 years ago0.6591.7350.5580.21001.7334.720
31-40 years ago0.21000.7510.21000.21001.1412.327
41-50 years ago0.0.0.6590.4700.0.0.7571.735
over 50 years ago0.21000.5580.8511.4385.2198.114
total2.6267.2154.9194.42013.41032.54
Southwestern Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.8502.2303.1264.72015.81126.58
11-20 years ago0.6570.6582.8275.4195.31914.711
21-30 years ago0.21001.2411.6351.9316.11810.913
31-40 years ago0.4710.4711.9310.8507.31610.813
41-50 years ago0.6581.0451.1411.2417.61611.513
over 50 years ago1.4383.2254.6206.31731.2746.75
total4.0228.51515.01120.3973.44121.12
Southeastern Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.6583.1256.4175.51918.71034.47
11-20 years ago1.2415.2194.5212.92615.21129.08
21-30 years ago1.2412.6283.4242.52814.51124.29
31-40 years ago0.4711.8330.9451.43811.71316.211
41-50 years ago0.4711.0450.4711.0457.1169.814
over 50 years ago0.4711.8332.2302.82730.8738.07
total4.32115.41117.91016.01198.03151.62
Southern Alpsn/a0.0.0.0.0.0.0.0.0.0.0.0.
less than 10 years ago0.8502.6283.4242.8278.51518.110
11-20 years ago0.4710.8501.4381.4386.41710.513
21-30 years ago0.8501.6351.0451.6357.31612.312
31-40 years ago0.21000.8501.4381.43810.51314.311
41-50 years ago0.4711.6351.6351.0459.51414.211
over 50 years ago0.8503.1256.3177.61671.1488.93
total3.42410.51315.21115.811113.33158.32
Switzerlandn/a0.0.0.21000.0.0.21000.0.0.471
less than 10 years ago46.36151.13142.7375.5577.35492.81
11-20 years ago22.1953.3650.1632.0847.46205.03
21-30 years ago8.81521.11023.2919.51043.87116.34
31-40 years ago3.42411.61313.1128.81545.1782.05
41-50 years ago3.6247.9168.3158.71535.9764.45
over 50 years ago5.61911.41319.41025.19179.43240.92
total89.85256.52256.82169.93428.921201.91
© WSL, Swiss National Forest Inventory, 22.06.2020 #799224/265556
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