COMPUTER-AIDED PLANNING AND SPATIAL DEVELOPMENT

The aim of this work is to show the possibilities of using laser scanner in ecosystems preservation on the stage of making spatial planning decisions. The laser technique of automatic measurement enabled us to get measurable and fully objective spot elevation model very quickly. Received scan was converted into spatial model by adding texture and later on merging increments of development in their natural surroundings. The visualization created can be very helpful when choosing the best option of land development; moreover, it can help protecting the land from investments leaving it in its original shape. For the purpose of the research supporting ecosystems preservation, two chosen objects, located in Sobótka (Sobótka commune) and Maniów Mały (Mietków commune), were diagnosed. Field investigations were conducted in the years 2011-2012. It was concluded that the afforestation of one of the investigated area according to the existing regional policy would block the view on the Zbiornik Mietkowski dam coping. ...

CHANGES OF SOIL MICRORELIEF UNDER THE INFLUENCE OF SIMULATED RAINFALL

Soil microrelief is one of the factors affecting wind and water erosion process. Spatial variability of soil surface (microrelief) influences initiation of the surface runoff and water flow mainly through depressions, where the runoff is delayed and infiltration increases owing to the interception of the flowing water. The research was conducted to assess the changes of relief of two soils (sandy loam and fine sand) under the influence of rainfall in a model experiment. The soil microrelief was determined by means of a contactless 3D scanner using the effect of line distortion as light beam illuminating the object surface (so called Moire pattern). On the basis of obtained results, maps of the differences in the scanned surface elevations were plotted in ArcGIS programme and the soil losses volume was computed. RR indicator calculated for sandy loam was decreasing with increasing depth of simulated rainfall. No such dependence was observed for loose sand. ...