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Threats to Chosen Locality by Surface Runoff, Water Erosion, and Surface Water Pollutants
Buršík, Lukáš ; Dumbrovský, Miroslav ; Sobotková, Veronika ; Kulihová, Martina ; Pavlíková, Marcela
This paper aims to provide information about threats to a chosen locality in the South Moravian Region of the Czech Republic, specifically focusing on surface runoff and water erosion. The geographic information system ArcGIS Pro was primarily used for the analysis. This paper also deals with contamination of surface water by pollutants which are produced by an agricultural company in the locality. For this reason, water samples were taken from a stream and subsequently analysed in a chemical laboratory. In terms of soils erosion proneness, it was discovered that most of the area consists of unthreatened soils. Regarding the chemical analysis of surface water, it was found that the results obtained are affected by the season of the sampling (wet or dry) in terms of water volume in the stream.
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Using the Erosion Potential Method in the Czech Republic
Hloušek, Jakub ; Larišová, Lucie (referee) ; Dumbrovský, Miroslav (advisor)
The aim of this thesis was the evaluation of the loss of soil for the area of interest, located in the north-western part of the Němčického basin, in the district of Blansko. The calculation was made using two methods, namely erosion potential method (EPM), commonly used in Serbia and the Wischmeier-Smith universal soil loss equation (USLE), used in Czech Republic. Finally, both of these methods were compared with each other. Both methods use a different method of calculation. USLE method utilizes the universal equation for calculating the long-term average soil loss per year (G), the EPM method utilizes equation for specific average annual soil loss (Wsp, Wy). The calculation was performed with both methods in program ArcGIS while the USLE method was also supplemented with calculation of the factor (LS) with USLE2D program. When comparing the soil loss each of evaluated areas, the EPM achieved higher values of soil loss in the most of them. In contrast to the USLE method, the EPM the total loss of the soil from the evaluated areas also accounted the soil loss from forest areas. In terms of accuracy of the achieved real world results, it was determined that the conditions in the Czech Republic are more suitable for the USLE method and not only due to more accurate data input, but also because with EPM there is no factor that would better reflect the topographic factor and conditions of surface runoff in the territory.
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Evaluation of erosion and runoff conditions in context with the agroforestry systems design
Vaňousová, Martina ; Skřivanová, Zuzana (referee) ; Sobotková, Veronika (advisor)
The diploma thesis generally deals with the emergence of water and wind erosion, its conseque-nces and the possibilities of how to prevent or limit erosion, with various anti-erosion measures. More specifically, it focuses on agroforestry systems (ALS), their origin, importance and appro-priate use in the landscape. To investigate the effects of ALS, an agricultural area near the village of Modřec was selected, on which ALS variants in various variations were designed using compu-ter programs. The main quantity investigated and compared was the average long-term soil loss by water erosion under different variants of the ALS design.
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A study of erosion control system using biotechnical conservation measures
Moravec, Jiří ; Sobotková, Veronika (referee) ; Dumbrovský, Miroslav (advisor)
The objective of the bachelor thesis was the study of soil erosion control with application of system of semi-natural measures in chosen small catchment. Digital elevation model was generated and average soil loss was determined by ArcGis tools at each erosion parcel . Design of erosion control at chosen erosion risked locality was create in Microstation software and InRoads utilities. As a type of enviromental erossion control mesures was chosen a system of a earthfill dams with the sedimentation area in combination with grassing. The thesis efforts to point the differences between the possible optimal solution and a compromise solution which respects the requirements of agricultural entities. The solution respects the trend of water retention in landscape and use of low cost measures.
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