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Berlin Environmental Atlas

01.13 Planning Notes for Soil Protection (Edition 2015)

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Map Description

The map shows the sections differentiated according to five soil-protection categories. In addition, each protection category is distinguished by graduations of color intensity (shading) into the three imperviousness classes: 0 - 5 %, >5 - <30 % and 30 - 100 %.

Maximum protection level

The areas of the highest protection category are concentrated primarily in near-natural sections with rare plant communities or outstanding remnants of the Ice Age in the outer areas of the city. Major contiguous areas of this protection category are located in the Spandau Forest on valley sand with eutrophic and oligotrophic eutric-histosols (i.e., bogs). These groundwater locations are associated with calcaric eutro-gleyic cambisols, calcaric cambisols, calcaro-gleyic cambisols and eutro-gleyic dystric cambisols (brown earths, largely with lime). Other locations near groundwater of the highest protection-worthiness category are at Tegel Creek, with eutrophic eutric-histosols, rare dystric gleysols and calcaro-dystric histosol; in the Buch Forest with eutric histosols, gleysols and stagno-gleyed cambisols on valley sand areas; and in Köpenick/ Müggelheim with fluvic and calcic-eutric histosols (bogs in flood-plains), in a deflation basin, filled with fine-grain drifting sands. These eutric histosols (bogs) are associated with dystric gleysols (wetland soils) in transition to dystric cambisols on low-nutrient locations. in the southwest of Berlin, in Kladow; dried eutric-histosols with fossil gleysols and dystric cambisols in a glacial runoff in the Glienicke Lake area have been assigned this high protection status. Other sections located at the edge of the Grunewald chain of lakes consist of eutric-histosols, in some cases dried, stagnic gleysols, fossil gleysols and dystric cambisols, and in the Tegel Airport/Jungfernheide area, with fluvic (flood-plain) soils. A special phenomenon are the drained fluvic soils with thick lime mud in Teerofen.

Smaller areas with eutric-histosols and gleyic (i.e., wetland) soils are located at the edges of unspoiled watercourses such as the Krumme Lake and the Kuhgraben in Köpenick, the Mill Stream in the Rahnsdorf Forest and the Wuhle Valley in Marzahn-Hellersdorf. The groundwater-characterized soil associations in the Havel lowlands in Spandau and in the Königsheide ("king's heath") in Treptow, and the fluvic soils in Heiligensee, also deserve mention.

Examples of sections with the highest protection category and with an additional main emphasis on the archival function are primarily the Ice-Age-characterized arenic dystric cambisols (brown earth turned to gley) associated with the podzoluvisols in the Frohnau Forest, and the arenic dystric cambisols associated with luvisols and gleyic cambisols in Gatow, which are used as farmland.

For the most part, these sections are forests or other uses, including predominantly mixed stands of meadowland, scrubland and forest. They also include agricultural sections (meadow/pasture and farmland), parks and residential sections (cf. Fig. 8). Most sections are already subject to protection status in other legal contexts. The highest protection is provided by conservation law, with the certification of official protected areas.

The total area of this protection category amounts to 3,771 ha. Of these, 3,295 ha (87 %) are up to 5 % impervious, 394 ha (10 %) >5 - < 30 % and 82 ha (2 %) 30 % and more impervious.

As expected, imperviousness degrees up to 5 % dominate within this protection category. The quota of sections with an imperviousness degree of > 5 % is small and amounts to 12 % (cf. Fig. 6 and Tab. 1). Altogether, of the total area of 3,771 ha in this category, 3,664 ha are pervious (cf. Fig. 7).

Very high protection level

All sections with a high degree of efficiency with respect to yield function, regulatory function for the water balance or buffering and filtration function, or a medium degree of efficiency as a rare plant location, together with an archive function, are assigned to this protection category.

Major contiguous areas in this category, pervious or minimally impervious, are located at the end moraines or drumlins, with dystric cambisol - regosol - colluvial cambisol/gleysol soil associations, at the slopes of the Havel, at the Wannsee Lake and in the Gatow Heath. Another typical soil association with soils exceptionally deserving of protection soils are the soil associations of dune-sand with the series spodo-dystric cambisol - podzol - colluvial dystric cambisol in the Tegel Forest, Frohnau and Köpenick. At the latter location, these soils are in some cases interlocked with the associations described for the end moraines and drumlins.

Other areas are located in the Tegel Creek, with eutrophic eutric-histosol - histo-humic gleysol - eutro-gleyic dystric cambisol. Occasional small areas can be found on the Barnim Plateau, with sandy basin fillings, in Malchow and Wartenberg. The soil associations which occur here are dystric cambisol - colluvial cambisol and dystric cambisol - luvisol - eutric-histosol. Other occurrences of soil associations deserving of protection with basin filling are located in Spandau.

Sections with this assessment with medium imperviousness of > 5 %, < 30 %, are concentrated on the Barnim and Teltow plateaus, with bolder clay or bolder marl. The certified locations are generally in small segments, and located in the outer areas, in loosely built-up single-family home neighborhoods, such as in Lichterfelde, Lichtenrade, Rudow, Bohnsdorf, or in parks and allotment gardens. The soil associations deserving exceptional protection are of loamy substrata with luvisol - arenic cambisol associations.

The total area of this protection category amounts to 12,518 ha. Of these, 5,329 ha (43 %) are up to 5 % impervious, 4,940 ha (39 %) >5 - < 30 % and 2,251 ha (18 %) 30 % and more impervious.

This category contains 17 % of the area evaluated, with 12,518 ha, of which 10,765 ha (86 %) are pervious (cf. Fig. 7). The distinctive factor is the relatively high share with a degree of imperviousness of 0 - 5 % and > 5 - < 30 % (cf. Fig. 6 and Tab. 1).

The predominant uses in this protection category are forests, allotment gardens, parks and residential sections (cf. Fig. 8).

High protection level

This category of soils deserving special protection is based on the high contribution of the soils to maintaining the water balance, or for their filtration and buffering capacity.

On large pervious complex at Müggel Lake is particularly striking, where the entire forest area on valley sand with dystric cambisol - stagno-gleyed cambisol - gleyic cambisol satisfies these criteria. In addition, there are smaller areas with acidic soil associations of drifting sand, like spodo-dystric cambisol - stagno-gleyic dystric cambisol. These dune-sand and valley-sandy soil associations, which are very much deserving of protection, can also be found in the Tegel Forest/Hermsdorf area, and at Tegel Lake. Smaller pervious areas are located primarily in the north and south of Berlin, on the Teltow and Barnim plateaus. The typical soil association is luvisol (gray soil) - arenic cambisol of boulder clay.
The moderately impervious sections in this category up to a degree of imperviousness of 30 % are small and scattered. They include the luvisol - arenic cambisol soil association of boulder clay at Tempelhof Airport, on farmland sections in Gatow, and in the loosely built residential sections with single-family homes in Marzahn-Hellersdorf, Karow and Französisch-Buchholz. Other areas include the groundwater-affected soil associations on valley sand with cambisol - gleysol - eutric-histosol in the Königsheide, and dystric cambisol, stagno-gleyed cambisol and gleyic cambisol in the Plänterwald Forest. Soils of detritial sands on moraine areas with dystric cambisol - colluvial cambisol in the Westend neighborhood of Charlottenburg and in Tempelhof, used as allotment gardens, also fulfill these criteria. Such parks as the Rehberge Park, with spodo-dystric cambisol - dystric cambisol - colluvial cambisol of drifting sand, also deserve mention.

Soils deserving special protection with a high imperviousness degree of 30 - 100 % are limited to a few small areas, some in residential sections. These are primarily sandy deposit soils with the soil types loose lithosols (rock-fragment soil), calcaric regosol (lime), regosol (non-descript soil) and hortisol (garden soil). Certified sections include for example the West Berlin Zoo, areas along the Spree in Rummelsburg, and residential areas in Hermsdorf.

The total area of this protection category amounts to 14,174 ha. Of these, 8,626 ha (61 %) are up to 5 % impervious, 3,526 ha (25 %) >5 - < 30 % and 2,020 ha (14 %) 30 % and more impervious.

This category accounts for approx. 19 % of the area evaluated, and thus for a similar share as the category "Very high protection level" (cf. Fig. 6). The order of magnitude of 12,692 ha (90 %) of pervious area, is also similar to that in the category "Very high protection level" (cf. Fig. 7). The share with a degree of imperviousness of up to 5 % constitutes the largest part of the area for this category (cf. Fig. 6 and Tab. 1).

Soils with forest utilization account for the major share of the areas in this protection category, followed by residential areas, farmland and allotment gardens (Fig. 8).

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