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NFI4
forest area
groundwater protection zones (April 2013)
unit of reference: protection forest region
unit: %
unit of evaluation: accessible forest without shrub forest
grid: 1.4 x 1.4 km grid
state2009/17
protection forest region
Jura + PlateauNorthwestern AlpsNortheastern AlpsSouthwestern AlpsSoutheastern AlpsSouthern Alps Switzerland
groundwater protection zones (April 2013) %± %± %± %± %± %± %±
n/a84.70.895.10.793.41.087.91.396.40.784.81.389.30.4
groundwater protection zone S10.10.10.20.10.20.20.0.0.10.10.30.20.10.0
groundwater protection zone S24.00.41.80.41.60.56.71.00.0.5.80.83.40.2
groundwater protection zone S39.60.62.20.53.20.74.40.80.50.37.60.95.70.3
no groundwater protection zone, but rated as S20.50.10.80.31.60.51.00.42.90.61.50.41.10.1
no groundwater protection zone, but rated as S30.0.0.0.0.0.0.0.0.0.0.0.0.0.
area of contribution instead of protection zone S31.20.20.0.0.0.0.0.0.0.0.0.0.40.1
total100.0.100.0.100.0.100.0.100.0.100.0.100.0.
© WSL, Swiss National Forest Inventory, 17.06.2020 #874816/341148
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