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Habitats of national importance – fenlands,
raised bogs, and alluvial zones – are found on roughly
1% of the total expanse of Switzerland. However, protected by federal
law, these areas make up only a small fraction of Switzerland’s
valuable habitats.
The table below lists the sizes of alluvial zones, raised bogs and
fenlands of national importance as well as the total area covered
by these three habitat types in hectares.
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| Biogeographical region |
Alluvial zones |
Raised bogs |
Fenlands |
Multiply
recorded areas |
Total area
recorded in Federal Inventories |
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| Switzerland |
22,639 |
1,524 |
19,223 |
-1,311 |
42,075 |
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Interpretation example
The Federal Inventory of alluvial zones of national importance holds
22,639 hectares for all of Switzerland. Overall, habitats of national
importance cover an area of 42,075 hectares, of which 1,311 hectares
are recorded in more than one Inventory.
Comment
• Habitats recorded by Federal Inventories cover roughly 1%
of Switzerland’s total surface area.
• Raised and transitional bogs make up less than 4% of the
total area of habitats of national importance.
• Federal Inventories record only a very small share of valuable
habitats. Others, such as lakes, interlittorals, and woodlands,
cannot be considered due to lack of valid data registered in all
of Switzerland. Dry habitat data are likely to be available by the
end of 2008.
Notes
• The “Total area recorded in Federal Inventories”
column combines the areas recorded in all three Federal Inventories.
Areas covered by several Inventories are counted only once.
• For information on when the Ordinances governing the Inventories
were established and revised, please refer to the “Definition”
section of the data sheet 737
315.10 Z10 V1_en dated February 28, 2008.
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