Geoscience Reference
In-Depth Information
Fig. 9.1
Investigation area
Table 9.1
Protection areas and proportion of investigation area
Nature protection category
Coverage (%)
Biosphere reserve
12.57
Landscape-protected area
52.17
National Park
14.65
Nature conservation area outside National Park
0.06
Areas according to European Bird Directive
52.17
Areas according to Natura 2000 (FFH) - Directive
0.00
9.3.4 Digitalisation and Interpretation
Minimal mapping unit represents the smallest visible structure. Therefore streets
(tracks) and small drains were also digitised. To make this process easier, rivers
(only visible in sheets from the 1780s) and traffic routes were digitised as line
first and finally buffered to a 3 m extent (real width then 6 m irrespective of
schematic drawn width). When digitising maps from the 1840s the same procedure
was adapted for drawn in dams (also 6 m width). Point-shaped landscape elements
(military knolls for border observations or cairns of the Iron Age and Roman times
in the first instance) were digitised as points and then buffered to an extent of 40 m
(equivalent to approx. 5.000 m
2
). Together with the plane elements these two shapes
were finally merged geographically together. All generated midget-areas smaller
than 100 m
2
were assigned to the largest adjacent polygon.
Because of their universally applicable attributes the basis for interpretation was
the attributes of the CORINE land-cover classification (Bossard, Feranec, & Otahel,
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