Algorithm of Urban Planning and Ecological Rehabilitation of the Functionality of the «green» Framework of Rulef-Gulf Structures

This article examines and analyzes the condition of gully structures located in urban environments. The research methods used include: analysis and classification of scientific papers selected based on a three-dimensional taxonomy (chronological, thematic, and value criteria), in-kind surveys of specific gully areas, a comprehensive urban planning analysis of Dubovaya Balka in the Dzerzhinsky District of Volgograd, parametric design, and the universalization of the applied solution algorithm. The study's result consists of a presented systematization of gully structure degradation problems, identified and summarized into groups. The first group includes the following urban planning problems: complex terrain (difficulty of development), communication gaps (loss of territorial connectivity), and functional use (irrational, harmful use). The second group includes urban environmental problems: pollution (damage to the natural ecosystem), disappearance of green framework elements (elimination of protection for the city from dust and overheating), gully erosion (threat to residents, damage to soils). The third group consists of macroecological problems of a global scale: liquidation of the structure of natural gullies (backfill, complete destruction of the natural green framework), destruction of air corridors (lack of natural ventilation, enrichment with clean air), degradation of the established ecosystem of large and largest rivers (lack of catchment basins, processes of shallowing of rivers). A conceptual algorithm for the phased rehabilitation of the ecological gulley framework is proposed, tested in solving the identified problems of the Dubovaya Balka territory (Dzerzhinsky district of Volgograd): the first stage is clearing of gulley structures, the second is rehabilitation of the gully territory, the third is reconstruction of the buildings adjacent to the gully, the fourth is organization of recreation in the gully structure, the fifth is development of a forecast plan for the development of the territory. The application of this algorithm will ensure a progressive process of urban development and environmental rehabilitation of ravine structures, their inclusion in the life of the city, and the restoration of the functionality of the natural green framework necessary for the sustainable development of territories.