Abstract
The contemporary models of city shaping introduce the principles of sustainable design. The possibilities for a resilient urban ecosystem, improving the parameters defining the urban environment as well as improving social integration are related to the modern way of designing a functional and spatial structure that forms an inseparable whole with the natural system as part of concepts, such as green and blue infrastructure. In urban planning, regenerativity provides a development of the eco cities and smart cities concept. For both of these types of cities, their functions need to be defined, as well modern, pro-environmental parameters must be specified relating to building developments and infrastructure of urban areas in connection with the natural system of the city. Problem areas concerning the transformation of urbanized areas are being indicated. These concerns refer to the problem of the revitalization of degraded areas in the city, “field reserves” in extensive development and in areas related to technical infrastructure and public transport. The characteristics of the resilient and regenerative design model lead to the definition of planning guidelines for the needs of new standards for shaping the functional and spatial structure associated with the city’s natural system. The issues of transformations of urbanized areas, with reference to defining the connection of buildings with biologically active areas and infrastructure in the city, are indicated.