National Repository of Grey Literature 118 records found  beginprevious89 - 98nextend  jump to record: Search took 0.00 seconds. 
Impact of factor changes of erosive effectiveness of the rain on the areal extent of the categories of erosion risks degrees
Pírek, Jiří ; Šilhan, Vlastimil (referee) ; Dumbrovský, Miroslav (advisor)
The main theme of the thesis is a sensitivity analysis of the area of erosion risks categories depending on different R factor that enters into a universal equation for soil loss by water erosion (USLE). Mathematical model of erosion was processed for the cadastral Nikolčice located in Southern Moravia. The study also discusses the european standards for Good agricultural and environmental condition in relation to water erosion (GAEC 1 and 2) and a brief analysis of the potential economic damage caused by erosive wash.
Identification occured factors of ephemeral gullies in the way of concentrated runoff
Galeta, Martin ; PhD, Ing František Pavlík, (referee) ; Dumbrovský, Miroslav (advisor)
Problems associated with water erosion are current in nowadays, it is necessary to pursue them, understand the issues and find solutions how to mitigate the consequences of torrential rains. This thesis focuses on the concetrated flow path, what factors affect the creation of erosion furrows. I chose four representative concetrated flow path in the cadastre of villages Dyjákovičky, Vrbovec, Ječmeniště and Chvalovice
Stabilization the ways of concentration surface runoff
Vlčanová, Veronika ; Dohnal, David (referee) ; Dumbrovský, Miroslav (advisor)
The subject matter of this thesis is the identification and stabilization the ways of concentration surface runoff in the catchment area, Opatov na Moravě. Identification was based on the GIS analysis and it was using a digital terrain model. Hydrological model DesQ was used for calculation direct surface runoff individual ways of concentration runoff and software Dimenzov was used for dimension profiles of ways. Theoretically it has been described possible ways of stabilizing. On the basis of previous findings that was chosen for stabilization of individual ways in the area of interest.
Determination of critical points and the evaluation of their contributing areas state
Řídký, Vojtěch ; Larišová, Lucie (referee) ; Dumbrovský, Miroslav (advisor)
Torrential rainfall floods are more frequent problem and it can not be predicted in advance. The only protection is a complex of measures in the catchment area. The aim of this thesis is identification of critical points and rating of the state of their contributing areas in cadastre unit Šatov and Hnanice.
Elimination of symptoms of water erosion and sediment transport
Pospíchalová, Lucie ; Křížková, Svatava (referee) ; Dumbrovský, Miroslav (advisor)
The aim was to evaluate the erosion and drainage conditions on the base of GIS analysis using the DMT. Propose measures to elimination of symptoms of water erosion and sediment transport. The proposed measures to evaluate their effectiveness. For existing measures to assess their effectiveness and recommend supplementing the measures.
Identification and stabilization of concentrated runoff waterways in the watershed of Prusanka and Mutěnický creek
Horký, Štěpán ; Pavlík, František (referee) ; Dumbrovský, Miroslav (advisor)
The subject matter of the thesis is the identification of concentrated runoff waterways in the landscape and their consequent stabilization. The municipalities of Čejkovice and Mutěnice in the South Moravian region were analysed in order to reach this purpose. The thesis introduces theoretical bases for the definition of concentrated runoff waterways and their application in the calculation. The area was analysed on the basis of the digital elevation model in ArcGIS software environment. The CN curves method by means of the hydrological model DesQ – MAX Q was used for the calculation of concentrated runoff waterways.
Integrated soil and water conservation against the adverse effects of surface runoff in the watershed of Prusanka creek
Plešek, Martin ; Sobotková, Veronika (referee) ; Dumbrovský, Miroslav (advisor)
Thesis deals with the calculation of erosion and surface runoff in the watershed Prušánky using USLE2D method in ArcGIS and CN method in model DesQ. The results are used to design elements of erosion protection
Influence of the landscape management on erosion and runoff conditions of the catchment
Hájek, Daniel ; Uhrová,, Jana (referee) ; Dumbrovský, Miroslav (advisor)
Aim of this study is to evaluate the effects of landscape structure on soil erosion and runoff conditions of given area with help of digital elevation model and relevant GIS data. Analyses of soil erosion by water and runoff were processed for current conditions and several other variations. Based on this analyses and results was performed an evaluation of all model variations.
The influence of landscape changes on erosion and runoff
Uhrová, Jana ; Toman,, František (referee) ; Váchal,, JAN (referee) ; Dumbrovský, Miroslav (advisor)
The aim of this thesis is to evaluate the influence of land use changes on erosion and runoff conditions. For the purpose of the evaluation, two catchments with different areas and pedological characteristics were selected (the catchment of the river Luha and the catchment of the Hubenov reservoir). In these catchments, a comparison of 26 selected land covers was conducted. The individual land covers were evaluated first in four seasons of the 1950s and 1990s, second according to the today's status of landscape by means of a detailed yearly evaluation conducted between 2002 and 2013, and third according to a land cover conceptual design. Analyses of not only land cover, but also geomorphological, pedological and hydrological conditions were carried out for both of the catchments by means of geographic information system (GIS) tools. The quantification of soil loss was performed by means of two methods – the method USLE with the use of ArcGIS program and the soil loss model WEPP. The crucial factor of the runoff evaluation of the preset end profiles with respect to the formation of concentrated runoffs and their catchment areas was the hydrological model DesQ-MAXQ. The selected land cover scenarios of the river Luha were then exposed to the conditions of a real rainfall that occurred in 2009 and that resulted in floods in the area. Furthermore, a rainfall-runoff model was created for this catchment area in HEC-HMS; the land cover scenarios were again subjected to the above-mentioned real rainfall. The land use changes of the catchment area of the reservoir Hubenov were assessed also with respect to the concentration of substances in the profiles studied.
Quantification of natural water retention capacity in selected watersheds
Pavlík, František ; Švihla,, Vladimír (referee) ; Pavelková,, Renata (referee) ; Dumbrovský, Miroslav (advisor)
The aim of this work is to quantify the natural water retention capacity of the landscape in selected catchments and determine the significance of selected climatic and geographic basin factors on components of retention capacity. 18 rainfall-runoff events were selected in 11 catchments for quantification of the natural water retention capacity of landscape. Land cover, geomorphological, pedological and hydrological conditions were analyzed for this basin using GIS tools. Historical rainfall-runoff events for which were restored historical land cover were also evaluated in this work. Two different methods were used for the quantification of retention capacity, one of them was used in two variants. A rainfall-runoff models and simulated scenarios of land cover (positive and negative) were constructed in two selected catchments in HEC-HMS. The work also use previously performed simulation scenarios of land cover formulated by other authors. Total final set of 33 rainfall-runoff events were subjected to statistical correlation and regression analysis. The goal of these analyses was to determine the significance of individual parameters assessed in relation to the components of natural water retention of catchment.

National Repository of Grey Literature : 118 records found   beginprevious89 - 98nextend  jump to record:
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