Rola błękitno-zielonej infrastruktury w kształtowaniu zdolności adaptacyjnych miast do zmian klimatu. Studium wybranych miast województwa wielkopolskiego położonych w dolinie Warty
The role of blue-green infrastructure in developing the adaptive capacity of cities to climate change. A study of selected cities in the Wielkopolska Province located in the Warta River Valley

Summary/Abstract: The article presents the results of an assessment of the ecological potential of cities in terms of adaptation and mitigation to climate change. Five cities in Wielkopolska province located in the Warta River Valley were selected for the study: Luboń, Oborniki, Puszczykowo, Pyzdry and Sieraków. The analysis was based on an inventory of blue-green infrastructure (BGI) elements, taking into account their generic structure, function and spatial layout. The assessment used a system of indicators defining the role of BGI in shaping the resilience of cities to threats resulting from climate change. Therefore, the indicators were aggregated into four main categories of characteristics, i.e., natural diversity, modularity of natural structures, ecological connectivity, and ecological functionality. In summarizing the research results, the strengths and weaknesses of blue-green infrastructure in individual cities were identified, and an analysis was conducted of the targeted measures contained in local strategic documents that take into account the role of BGI in adaptive management. To this end, a review of studies in the field of spatial planning and environmental protection was conducted. The analysis revealed a different structure and spatial arrangement of blue-green infrastructure in the studied cities, which weighed on the assessment of their adaptability. Sieraków and Puszczykowo stand out for their comprehensive and well-developed BGI system, with supra-local importance and high functionality. Among the main factors contributing to the high potential of BGI are the large share of natural areas, their generic diversity and functions related to climate regulation and water retention. Lubon is characterized by low potential values in almost all groups of features. Particularly problematic issues include: significant fragmentation of ecological patches, low density of ecological corridors and their collision with technical infrastructure elements, as well as unfavorable spatial distribution of the urban heat island. The negative conditions found in Lubon also partially affect to Pyzdry and Oborniki.

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