| Abstrakt: |
This paper discusses soils in green recreational areas of Volgograd urban landscapes on the example of Sasha Filippov Public Garden. The soil cover in the public garden is represented by typical (Urbic Technosol), replanted (Urbic Technosol (Mollic)), and technogenic (Urbic Technosols (Hyperartefactic)) urbostratozems, replantozems (Phaeozem (Prototechnic)), and urbostratozems on buried chestnut soils. Sealed urbostratozems (Ekranic Technosols) occur under buildings and road surfaces. The presence of buried horizons indicates that the initial soil cover in this area was represented by chestnut soils (Haplic Kastanozems (Loamic)). The average thickness of urbic horizons (UR) is 95 cm; the average thickness of recultivating layers (RAT) is 50 cm. The soils of the public garden are diverse in terms of their chemical and physical properties. The soil carbon content in the urbic and recultivating horizons varies from 0.11 to 2.46%. Chemical analysis of the urbic and filling horizons showed that the content of readily soluble salts and carbonates is low (0.11 and 1%, respectively). In the RAT layers and anthropogenic UR horizons, the average density values vary in the range of 1.43–1.46 g/cm3. The average densities of buried horizons are as follows: 1.58 g/cm3 for BMK, 1.62 g/cm3 for B, and 1.53 g/cm3 for BCA, which is higher than the average density of native chestnut soils. The average density of the calcareous parent rock (Cca) is 1.38 g/cm3. The results provide insight into the soil genesis in urban recreational areas in connection with the anthropogenic transformation of natural chestnut soils in the dry-steppe natural zone. [ABSTRACT FROM AUTHOR] |
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