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Modelling the structure of terrestrial landscapes in urban areas

100%
Krutskikh N.
Quaestiones Geographicae
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2021
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vol. 40
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issue 1
39-49
EN
The study of internal and external factors in the formation of an urban geosystem is determined by its complex structure and multiple connections. Based on geoinformation modelling, an analysis of the landscape structure of the city territory is carried out, which can be a basis for further geoecological research. Morphometric indicators, which make it possible to determine the elementary geochemical landscapes, are indicated according to the data of the digital elevation model. A standardised topographic position index (TPI) is used to determine locations. Spatial zoning according to the type of land use reflects the qualitative features of the external load and technogenic impact. The data on the composition of the lithogenic base show the properties of the depositing medium and determine the natural background. Number of categories of landscapes identified are 58, characterised by a homogeneous geological composition, technogenic load and conditions for the migration of matter. The ratios of various landscape zones have been calculated. The study area as a whole is characterised by the predominance of migration processes over accumulation.
2
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Use of geospatial tools in morphometric analysis and prioritisation of sub-catchments of the soundgrougrou (Casamance Basin)

100%
Faye C., Ndiaye M.
Quaestiones Geographicae
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2021
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vol. 40
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issue 3
65-84
EN
The prioritisation of catchments, particularly in the context of catchment plans and management programmes, is part of water resources development. In fact, morphometric analysis assisted by geospatial technology is carried out by prioritising sub-catchments according to their natural resource availability characteristics. Information on the geomorphology and erosion factors of the study area is used in the area in the preparation of local models of ungauged sub-catchments, which otherwise lack an adequate hydrological database. The objective of this paper is to use geographic information systems (GISs) in morphometric analysis to prioritise sub-catchments of the Soungrougrou (a tributary of the Casamance River). In this respect, the integrated methodology involving morphometric aspects from geospatial technology is used. To carry out the geospatial research, basic mathematical equations used in a GIS environment were used to measure a series of aspects of hydrology such as flow length, flow length ratio, bifurcation ratio, drainage density, drainage texture, flow frequency, elongation rate, circularity ratio, form factor, relief and relief ratio. The results divided the whole catchment into three priority areas, namely high, medium and low. The results are relevant for establishing soil and water conservation plans in the Soungrougrou basin, as well as adequate groundwater production and management. The high category (sub-basins 6, 8, 14, 17 and 18) is subject to maximum soil erosion, which requires immediate intervention to avoid possible natural hazards.
3

Archaeological, Geophysical and Topographic Survey of The Neolithic Tells in Pelagonia

63%
Bugaj U., Naumov G., Trzeciecki M., Chwiej M., Przybyła M., Szczepanik P., Podsiadło M.
Sprawozdania Archeologiczne
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2014
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vol. 66
221–239
EN
Pelagonia — a large valley in the southern part of Macedonia — is one of the most important settlement centers in this part of the Balkans with a concentration of approximately 80 Neolithic tells, so far very poorly recognized. In 2013 the archaeological reconnaissance, the magnetic and topographic prospection have been carried out, with focus on the Central Pelagonia — the Mogila, Trn, Karamani and Dobromiri villages. Survey aimed at mapping, documenting and magnetic prospection of the sites selected by the following criteria: accessibility for surveying, visible land form suitable for Digital Elevation Modeling and state of archaeological research. The magnetic prospection gave a quick insight into the tells` organizational patterns. Together with precise positioning within RTK mode and Digital Elevation Models (DEM) it made a framework for the future presentation and processing of research results. The 2013 survey revealed the first images of the Neolithic tells in Macedonia. The enclosures surrounding the settlement e.g. in Dobromiri, although already known for the Balkans, have not been noted so far at the Neolithic or Chalcolithic sites in Macedonia.
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