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The article is devoted to the issues of ecological and landscape changes taking place in large spatial protected areas (landscape parks and protected landscape areas), located inside and in close proximity to the so-called functional zone of the Gdańsk-Gdynia-Sopot Metropolitan Area. The area is a metropolis with a population of 1.56 million inhabitants. In its central part, in the immediate vicinity (up to 25 km) from the borders of Tri-City, there are 4 landscape parks and 17 areas of protected landscape. High natural and landscape values determine the great interest in these areas, not only as a recreational space, but also as an area of realization of housing and service as well as production functions. The author draws attention to the lack of results of ecological and landscape research on a regional scale (especially in the immediate vicinity of a large, developing metropolis), evaluating the conservation status of protected areas, lack of reliable recognition of threats and the degree of changes in the environment of these areas as well as difficulties with their protection against investment pressure.Preservation of natural and landscape values of these areas is not a concern of local authorities focused on the economic development and the economic effects of how the communities function. As a result of investment pressures and irreversible impairment, many parts of them are eligible for exclusion from the borders of these areas. The degree of degradation and intensity of changes is a function of the distance from the most densely populated core of the metropolis, investment pressure and directions of urban development as well as natural characteristics of protected areas, predisposing them to fulfilling various functions. The article focuses, in particular, on selected areas of the protected landscape. They are covered by the weakest protective regime and are subject to the strongest changes.
The paper presents the concept of an ecological corridor system developed for spatial planning based on the case of the Pomerania Province. More attention was paid to the corridors along watercourses and river valleys. The study included e.g. spatial relationships between the proposed network of regional eco-corridors and the national network as well as areas of protected nature areas, including Natura 2000 sites. The main threats to the valley corridors in the area were identified. Depending on the level of impact and the geographical range, three different land corridors were distinguished: supraregional, regional and subregional. Due to the landscape and nature diversity, spatial distribution of physico-geographical units, terrain and river valleys, almost all communes and districts of the Pomerania Province have appropriate conditions to perform the functions of ecological corridors of various ranks. In some communes, they account for more than 50% of the total area and 28% of the province’s area, and a significant part of them are valley ecosystems. The aim of the paper is to document the role of river valleys in shaping the conditions of spatial connectivity of ecosystems and to indicate their significance for spatial planning processes.
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