Potential for the Removal of Impervious Soil Coverage 2020
Currently, 224 areas are listed in the Register of Potential Areas for the Removal of Impervious Coverage. The impervious coverage has been partially removed for 31 and fully removed for 14 of these areas.
Fig. 1 shows how many areas have been added to the list in each of the boroughs of the State of Berlin and areas of the Berlin forests in the State of Brandenburg, together with their sizes in hectares. Fig. 2, however, displays the size of the potential areas from which the impervious coverage may be removed, as well as that of the areas where the impervious coverage has already been removed.
The vast majority of the areas is in the category “diffusely impervious”. These are areas in which the area size of the impervious coverage removal could not be quantified with sufficient precision. This has generally been the case wherever such potential areas were identified as located diffusely scattered across a larger area. In other cases, the reason that such potential areas could not be qualified was that they could neither be precisely identified by administrative officials nor concretely delimited using aerial photography (e.g. bunker facilities). Since in these areas the proportions of the total area that are available vary, the concrete size of the potential impervious coverage removal area cannot be estimated.
In the Environmental Atlas, these areas are differentiated and presented in varying colour shades, based on the expert evaluation of the potential for impervious coverage removal (cf. chapter on Methodology, section on Prioritization). In addition, areas, which had their impervious coverage removed partially or fully already, are mapped.
Only those locations are shown in the respective if the actual potential for having their impervious coverage removed is estimated at more than 50 % of the digitalized area. Areas in which said potential is estimated at less than 50 % of the digitalized area are shown with .
Cases in which the potential for the removal of impervious coverage cannot be precisely quantified in terms of total area (see above “diffusely impervious areas”) are shown with .
The impervious coverage removal areas are shown in the map with various hatching. Menu item “Map structure” has the option of switching off the layer with the solid colour or hatching, and to reduce the identification of potential areas for impervious coverage removal to the border around the respective areas. Using menu item “Map overlay”, various maps can be switched on to provide background information. In this mode, the added background maps are readable. The map background can be selected via a menu item in the map window (digital topographic map / aerial photograph).
Moreover, the Geoportal/ FIS Broker has the option to view figures or photos linked to the particular impervious coverage removal areas under menu item “Select for factual data retrieval”.
Furthermore, each of these potential areas is linked to a (in A4 format), which contains a picture including a section from aerial photography, the delimitation of the potential area for the removal of impervious coverage, and the lot boundaries in the ALKIS, as well as a table with all relevant factual data. This uniform method of recording and presenting data facilitates and simplifies the selection of potential areas for the removal of impervious coverage (cf. Fig. 3).