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Testing possibilities to extract selected landscape characteristics for description of indication-relevant bird species habitats in the Krkonoše Mts. from remote sensing data
Polák, Mojmír ; Kupková, Lucie (advisor) ; Janík, Tomáš (referee)
The thesis uses remote sensing data from two spatial scales (Sentinel-2 with a 10 x 10 m pixel and PlanetScope 3 x 3 m. It explores the possibilities of extracting selected landscape characteristics (spectral indices, land cover type, landscape metrics). In order to evaluate which characteristics and at what scale are statistically significant for the occurrence of 23 selected bird species, species richness in quadrats and the number of species of the order Passeriformes in the Krkonoše Mountains. Data on species occurrence were mapped in the year 2012-2014 The strength of the relationship between characteristics and abundance was determined by Pearson's correlation coefficient. It could not be confirmed that data with higher spatial resolution would be more beneficial for extracting landscape characteristics. Overall, the landscape characteristics did not prove functional relationships for all selected species, but for some species, species richness, and order of Passeriformes, the assumption of elevation and land cover as important factors was confirmed. Land cover was analysed using the Random Forest supervised classification method in Google Earth Engine with an overall accuracy of 78 % for Sentinel-2 data, both in tundra and in the rest of the area, and 77 % for PlanetScoce data in tundra, 66...
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Lost landscapes of mountain agriculture of Šumava (Bohemian Forest): reconstruction, 3D models of landscape and possibilities of their presentation on web
Polák, Mojmír ; Kupková, Lucie (advisor) ; Štych, Přemysl (referee)
The study deals with the model area of the village Prášily in Šumava (Bohemian Forest), which is analysed in the framework of the project "Heritage of lost landscapes: identification, reconstruction and presentation". The goal was to evaluate landscape changes since the middle of the 19th century until present with use of maps of stable cadaster, historical orthophotos, current ortophotos and to create 3D reconstruction models of the landscape and a 3D photorealistic model of the extinct village Hurka. The next aim was to evaluate possibilities of presentation of 3D models on the internet and to find an optimal solution for their web presentation. The theoretical part describes possible methods of evaluation of landscape transformation, development of landscape in the Czech Republic since the middle of 19th century, theory of 3D models, the use of 3D models in practice and the methods of presentation of 3D models. The practical part consists of two landscape models, that were visualized using ArcGIS Online Web Scene, Web Viewer and a 3D model of the extinct village Hůrka with fly- through animation. The models were created using Sketchfab, 3DWarehouse and Google Poly. Sketchfab was chosen as the best solution because of its good visuals and good display on mobile devices.
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