Analiza promjene šumskog pokrova Spačvanskog bazena od 1975. do 2022. godine pomoću satelitskih snimaka

master's thesis

• Title (english): Analysis of forest cover change in Spačva Basin from 1975 to 2022, using satellite imagery
• Author: Mihovil Karaula
• Mentor: Luka Valožić (mentor)
• Committee member: Luka Valožić (predsjednik povjerenstva)
• Committee member: Aleksandar Toskić (član povjerenstva)
• Committee member: Dubravka Spevec (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geography); Zagreb
• Defense date and country: 2023-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: INTERDISCIPLINARY AREAS OF KNOWLEDGE; Geography

Abstract

Predmet istraživanja ovog diplomskog rada jest analiza promjene šumskoga pokrova u Spačvanskome bazenu u razdoblju od 1975. do 2022. godine, uz referentne godine 1976., 1991. i 2022. Područje istraživanja u potpunosti je smješteno u Vukovarsko-srijemskoj županiji, a sastoji se od 16 šumskogospodarskih jedinica, čije su prostorne granice ustupljene od strane Hrvatskih šuma u obliku GIS shapefilea. Analiza promjene pokrova provedena je preko Landsat satelitskih snimaka preuzetih s Earth Explorer servisa Američkog zavoda za geologiju (USGS). Korištene su snimke Landsat 1 (za 1976.), Landsat 5 (za 1991.) te Landsat 9 (za 2022.) misija. Stanja zemljišnih pokrova utvrđena su pomoću ručne nadzirane klasifikacije unutar ESRI-jevoga softverskog paketa ArcMap 10.8 unutar 4 klase zemljišnog pokrova. Pri klasifikaciji korišteni su RGB kompoziti satelitskih snimaka, kao i false color kompoziti te CVI (Chlorophylle Vegetation Index) vegetacijski indeks. Površine klasa zemljišnih pokrova utvrđene su pomoću funkcija unutar ArcMap programa i poznate veličine ćelije, odnosno piksela pojedinih satelitskih snimaka. Površine klasa potom su uspoređene te su izrađeni i rasteri promjene unutar kojih su promjene između klasa pokrova grupirane u 4 karakteristične skupine. U promatranome razdoblju od 1975. do 2022. uočena je dominacija procesa gubitka šumskoga pokrova, odnosno šumske mase, to jest procesa deforestacije, dok je proces reforestacije, odnosno obnove šumske vegetacije, bio prisutan, međutim u znatnoj manjoj mjeri.

Abstract (english)

The aim of this thesis is analysis of forest cover change in Spačva basin from 1975 to 2022, using reference years of 1976, 1991 and 2022. Research area is in its whole a part of Vukovar-Srijem County and consists of 16 forest management units, which spatial boundaries were granted by the Croatian Forestry via the GIS shapefile. Forest cover change analysis was carried out using the Landsat satellite images, accessed to via the Earth Explorer service of the United States Geological Survey (USGS). In use were the images of the Landsat 1 (1976), Landsat 5 (1991) and Landsat 9 (2022) mission for the respective reference years. Land cover state was determined using the manual supervised image classification in ESRI software package ArcMap 10.8. and divided into 4 land cover classes. RGB composites, as well as false colour composites and CVI index were in use in order to carry out the classification. Areas of land cover classes were determined using ArcMap functions as well as the known area and size of the raster cell for each satellite image. Areas of the land cover classes were then compared through the years and inter-class cover changes rasters between the respective reference years were made in addition. Land cover changes between the land cover classes were grouped into 4 characteristic groups. The analysis of this paper brought a conclusion of domination of process of deforestation, while process of reforestation exists, but on a significantly smaller scale.

• Keywords: GIS; šumski pokrov; Landsat; Spačva; daljinska istraživanja; klasifikacija zemljišnog pokrova
• Keywords (english): GIS; forest cover; Landsat; Spačva; remote sensing; land cover classification
• Language: croatian
• URN:NBN: urn:nbn:hr:217:377147
• Study programme: Title: Geography; specializations in: Physical Geography with Geoecology, Spatial Planning and Regional Development, Heritage and Tourism, Geographic Information Systems, Course research; Course: Geographic Information Systems; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geografije (magistar/magistra geografije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-03-15 09:02:14