Contemporary Land Cover Changes in the Bjelovar-Bilogora County

Predmet istraživanja ovog rada je GIS analiza suvremenih promjena zemljišnog pokrova u Bjelovarsko-bilogorskoj županiji. Promatrano je vremensko razdoblje od 1990. godine do 2018. godine, uz referentne godine 1990., 2006. i 2018. godinu u kojima su utvrđena stanja zemljišnog pokrova. Stanja i promjene ustanovljeni su uz pomoć baze podataka CORINE Land Cover iz koje su izdvojene klase zemljišnog pokrova, a reklasifikacijom je stvoren prostorni model za proučavanje dinamike promjena. CORINE Land Cover (CLC) baza podataka je generalizirana baza podataka u vektorskom obliku. Zbog jednostavnosti analize u ovom radu, vektorski podaci su pretvoreni u rasterski tip podataka, no zbog smanjene prostorne razlučivosti, dobiveni rezultati su pokazatelji generalnog stanja i općih promjena na prostoru Županije. Ustanovljene su klase zemljišnog pokrova koje su najveće površinom na području Županije, a to su: poljoprivredne i šumske površine. U istraživanom razdoblju 1990. do 2018. godine, u apsolutnoj promjeni dominiraju reforestacija i deforestacija, međutim najizraženiji trend promjene u dva promatrana razdoblja (1990.-2006. i 2006.-2018.) zabilježen je u tipovima urbanizacija i intenzifikacija. Tipovi i trendovi promjena dovode se u vezu s demografskim procesima koji su se odvijali na ovom prostoru u tom razdoblju te tako utjecali na pojavnost određenih tipova promjena. Podaci su analizirani i prikazani uz pomoć GIS alata.Research object of this thesis is GIS analysis of contemporary land cover changes in the Bjelovar-Bilogora County. The time period from 1990 to 2018 was observed, with reference years 1990, 2006 and 2018 in which land cover conditions were determined. The conditions and changes were established according to CORINE Land Cover database, from which land cover classes were extracted. The reclassification was carried out to establish spatial model of the land cover change dynamics. The CORINE Land Cover (CLC) database is a generalized vector database. Because of the simplicity of the analysis in this paper, the vector data have been transformed into raster, but due to the reduced spatial resolution, the obtained results are indicators of the general conditions and general changes in the County. Land cover classes which are the largest in the county are: agricultural and forest areas. In the observed period 1990-2018, absolute change was dominated by reforestation and deforestation, however, the most pronounced trend of change in the two observed periods (1990-2006 and 2006-2018) was recorded in types of urbanization and intensification. The types and trends of changes are related to the demographic processes that took place in this region during this period, and thus influenced the occurrences of certain types of changes. Analyzed data were displayed using GIS tools