satellite images have been integrated for the changes detection of unique environment of the Słowinski National Park (SNP). The Park is situated on the south Baltic Sea coast (the northern Poland). It is known for its moving sand dunes, which migrate with a speed of 3-10 m per year. The project is based on the GIS (Geographical Information System) technology and uses data from various sources and periods. Such an approach made it possible to look at the studies in comprehensive way, taking into consideration almost all factors that contribute to ongoing changes of the SNP environment. The study was focused on analyses of the long-term coast processes, movement of dune zones and the vegetation changes in that area. Multi-temporal data have been performed and integrated using GIS technology for the changes detection of the unique environment of the Park. DEMs derived from aerial photography provided relief data, which were used to indicate selected features changes of the SNP landscape. Differential maps of elevation changes made it possible to recognize areas of elevation gain through the accumulation of sand and areas of elevation loss caused by erosion. There also were computed maps showing horizontal migration of the moving dune, as well as evolution of the dune area and morphology. Based on the classification of the satellite images results and NDVI vegetation index it has been observed vegetation changes over time 1979-2000 of environment in the Park area. 1. ITRODUCTION The Słowinski National Park (SNP) is situated on the south Baltic Sea coast (the northern Poland). The Park wa
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