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NFI4
forest area
rockfall SilvaProtect · crown closure
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
rockfall SilvaProtect
n/ainside perimeteroutside perimetertotal
economic regioncrown closure1000 ha± %1000 ha± %1000 ha± %1000 ha± %
Western Juran/a0.6580.0.0.0.0.658
crowded31.971.73310.01343.66
normal32.071.3388.61541.96
loose12.9120.0.4.12217.010
open20.890.21003.62324.68
scattered8.9150.0.0.4719.314
grouped crowded2.6270.0.0.0.2.627
grouped normal2.5290.21000.4713.026
heterogeneous8.4150.0.1.5359.914
total120.623.42328.67152.71
Eastern Juran/a0.0.0.0.0.0.0.0.
crowded17.790.31001.43719.48
normal16.490.0.2.42818.88
loose5.2190.0.0.4715.618
open2.1310.0.0.6582.727
scattered0.6570.0.0.21000.849
grouped crowded0.0.0.0.0.0.0.0.
grouped normal0.0.0.0.0.0.0.0.
heterogeneous0.0.0.0.0.0.0.0.
total42.030.31005.11947.42
Western Plateaun/a1.4350.0.0.0.1.435
crowded16.990.0.1.63518.68
normal13.7110.0.1.93315.610
loose3.8220.0.0.4714.221
open5.5180.0.0.8506.317
scattered1.2400.0.0.21001.438
grouped crowded0.4710.0.0.0.0.471
grouped normal0.8490.0.0.0.0.849
heterogeneous0.6570.0.0.0.0.657
total44.330.0.5.01949.22
Central Plateaun/a0.21000.21000.4710.850
crowded18.490.0.3.12421.58
normal22.480.0.2.42724.87
loose6.6170.0.0.8497.316
open7.6150.0.1.3378.914
scattered2.8260.0.0.4713.225
grouped crowded0.4710.0.0.21000.757
grouped normal0.21000.0.0.0.0.2100
heterogeneous1.5350.0.0.8502.328
total60.020.21009.41369.71
Eastern Plateaun/a1.0450.0.0.0.1.045
crowded31.570.0.2.52834.16
normal36.360.0.2.13038.56
loose16.2100.0.0.65816.710
open12.6120.0.0.65813.212
scattered2.7270.0.0.0.2.727
grouped crowded0.4710.0.0.0.0.471
grouped normal1.1410.0.0.0.1.141
heterogeneous0.9450.0.0.21001.141
total102.910.0.6.018108.91
Western Pre-Alpsn/a0.7580.0.1.4412.133
crowded4.3200.0.6.21610.511
normal4.1210.0.4.7198.813
loose1.4380.0.2.2293.622
open1.2400.0.3.3254.521
scattered2.7290.0.2.6295.319
grouped crowded2.7290.0.3.1265.818
grouped normal1.0460.0.1.4412.430
heterogeneous0.31000.21000.8501.241
total18.490.210025.6744.23
Central Pre-Alpsn/a1.7330.0.0.7492.527
crowded12.3120.47113.01225.88
normal12.6120.0.9.51422.09
loose3.3250.21005.8189.214
open7.7160.21009.11417.010
scattered4.0220.0.2.6266.616
grouped crowded3.6220.0.0.8504.420
grouped normal3.4230.0.0.7504.221
heterogeneous5.8180.0.5.91811.712
total54.450.85048.25103.42
Eastern Pre-Alpsn/a0.6580.0.1.0451.635
crowded11.2130.0.13.11124.28
normal10.6130.6588.51419.89
loose2.9260.0.4.1217.116
open4.9200.0.2.5297.316
scattered3.1250.0.1.7354.820
grouped crowded1.4380.0.2.2303.623
grouped normal3.0250.0.2.1315.119
heterogeneous0.6580.0.0.6581.341
total38.360.65835.8674.82
Northwestern Alpsn/a0.0.0.0.1.4371.437
crowded5.2191.83310.11317.29
normal3.3240.8507.91511.911
loose2.6270.0.1.6354.221
open2.4290.0.3.7236.217
scattered4.3210.0.1.0445.419
grouped crowded3.5240.4713.1257.017
grouped normal2.3300.21001.3413.823
heterogeneous2.1310.21002.0314.321
total25.883.52432.1661.43
Central Alpsn/a0.0.0.0.0.0.0.0.
crowded2.3280.8503.5226.615
normal1.7321.3372.3285.416
loose0.6580.4710.8491.732
open1.6340.4711.5353.522
scattered1.4370.4700.6572.428
grouped crowded2.2300.21000.6572.925
grouped normal1.6350.0.0.8502.428
heterogeneous1.4370.21000.4712.031
total12.7103.72210.51126.94
Northeastern Alpsn/a0.0.0.0.0.6580.658
crowded1.9311.5354.7208.014
normal1.4380.6594.5196.516
loose1.0450.31001.1452.330
open1.2410.5571.9313.622
scattered1.9310.31002.4274.620
grouped crowded2.3280.21001.6354.121
grouped normal1.5350.21000.9442.626
heterogeneous0.21000.0.0.0.0.2100
total11.4123.52317.7832.54
Southwestern Alpsn/a1.2410.21001.6353.126
crowded6.0181.93113.51121.49
normal2.8270.55811.21214.511
loose2.4290.8506.8169.913
open6.5171.63516.21024.38
scattered13.1121.04510.11424.38
grouped crowded3.3240.21002.6286.118
grouped normal1.6350.0.2.9264.521
heterogeneous3.2251.0458.91413.012
total40.267.21673.73121.12
Southeastern Alpsn/a1.0450.21002.5293.723
crowded6.5170.0.8.11514.611
normal7.8161.9329.91419.69
loose8.3150.4719.31418.110
open11.7130.47115.31127.48
scattered11.4130.65811.11323.19
grouped crowded10.0140.21007.41617.610
grouped normal9.4140.21009.41419.010
heterogeneous3.3240.4714.7208.415
total69.544.42177.84151.62
Southern Alpsn/a0.21000.0.1.4381.635
crowded7.6164.32134.1746.15
normal5.8182.92621.5930.37
loose1.0450.6587.7169.314
open4.9200.65813.41218.910
scattered9.8141.0459.71420.59
grouped crowded3.7230.85010.31414.711
grouped normal3.3240.6587.81611.713
heterogeneous1.2410.21004.0225.319
total37.5711.013109.73158.32
Switzerlandn/a8.7150.75811.01420.310
crowded173.8312.712124.94311.52
normal170.9310.01497.44278.42
loose68.152.62845.56116.24
open90.853.92273.95168.53
scattered67.953.32543.27114.44
grouped crowded36.672.03231.9870.45
grouped normal31.781.43827.7860.86
heterogeneous29.582.13029.8861.45
total677.9138.77485.311201.91
© WSL, Swiss National Forest Inventory, 18.06.2020 #860219/326550
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