Actual Use of Built-up Areas / Inventory of Green and Open Spaces 2021

The following section presents an overview of the changes. The map description of Actual Use of Built-up Areas / Inventory of Green and Open Spaces 2020 provides details on the categories used in the maps “Actual Use of Built-Up areas” (06.01) and “Inventory of Green and Open Spaces” (06.02).

As part of the update from December 31, 2021, a total of 35 new RBS blocks were added and 1,194 areas that had been identified were reviewed to establish whether the geometry or use attributes had changed. Furthermore, the ISU block (segment) area boundaries were adjusted to the ALKIS borough and state boundaries. As a result, the geometry of more than 2,500 block (segment) areas was revised. Table 1 below lists the changes in geometry, keys and use attributes by case for review. It should be noted that there may have been more than one case for review per area. Similarly, more than one type of change may have been implemented for an area, e.g. the boundaries of a block segment area may have been adjusted and the use attributes revised at the same time. Due to these overlaps, the sum of the subtotals does not match the final sum.

Table 2 presents a differentiated overview of the geometric changes for each case for review. Block boundaries were adjusted in particular in the course of adding new RBS blocks to the ISU5 or in areas with new development, which were still quite changeable (cases: WoFIS/ building completion and flagged items). Areas with new development also contain the newly formed road sections. The category “Flagged items” has the highest number of new or changed block segment areas. In this category, for example, the boundaries of the block segment areas and the use attributes were revised in the area of the “Domäne Dahlem” (open-air museum for agriculture and food culture). The adjustment to the ALKIS borough and state boundaries resulted in changes to the boundaries of roads and blocks in more than 2,600 areas.

The map below shows how the reviewed areas are distributed across the city, as well as the changes made to the geometry, keys and land use attributes (only in German):

The area of the former Tegel Airport stands out in particular, as the land use changed after the closure of the airport. The Gatow area is also noteworthy, as it contains an agglomeration of areas that have been reviewed but not revised. This is due to a number of block (segment) areas that were adjusted during the last update based on new RBS blocks. Therefore, a revision was not necessary for the 2021 update.

Areas that underwent major structural changes include the urban development area Europacity north of the Hauptbahnhof (main railway station), the Adlershof Technology Park, a former commercial area on Blockdammweg and an area on Wendenschloßstraße in Köpenick.

At first glance, the change that occurred in the “Airport” area type (TYPE = 93) is striking. With the closure of the former Tegel Airport (decrease of 444 ha), this area type no longer exists in Berlin. The remapping of the areas of the former airport site also explains the change that occurred in three other categories. The green areas of the former Tegel Airport are now mapped as “Fallow areas” (TYPE = 57, increase of 229 ha). The former runways were assigned to TYPE 94 “Other traffic areas” (increase of 105 ha). The built-up areas in the north of the former airport site are used as a Federal Government helipad and were classified as TYPE 41 “Security and order” (increase of 30 ha).

Other changes are linked to new development. The area type “Rental-flat buildings of the 1990s and later” (TYPE = 73) has increased by 28 ha and that of “Densification in single-family home areas” (TYPE = 25) by 26 ha.

The revision of the land use attributes in the Domäne Dahlem area explains the decrease in area type 44 “University and research”. The entire site is part of a foundation, established by the State of Berlin and a citizen’s initiative (Förderverein), and is an open-air museum. The previously indicated use as a research site therefore only applies to a smaller section located in the southeast. The use of the remaining area was changed to area type 45 “Culture”.