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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.
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Evaluation impact of the landscape structures on erosion and runoff conditions in given catchment area
Švandová, Tereza ; Sobotková, Veronika (referee) ; Dumbrovský, Miroslav (advisor)
The aim of this Thesis is to determine the impact of landscape change and erosion in given watershed. This case is evaluating Kamenec cadastral area. Changes in crops and spatial distribution of the fields are evaluated first in 1954, when the monitored area was without agricultural cooperative farms and land was used in a smal land parcels. This was compared to the evaluation in 2015 when land was part of agricultural cooperatives and was used in large units. The changes in landscape and its use were imense. Land exploatation, heavy machinery and non conservation cultivation led to its soil compaction and deterioration of the K factor.To evaluate soil losses I used a method USLE and program ArcGIS
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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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Anti erosion protection solution on the basins' borderline in various landscaping projects
HIRŠOVÁ, Martina
The aim of this master thesis is analysis of the problems of anti erosion precaution on the interface basin. The part of this work is literature contains where are described erosion phenomenons and calculation and anti erosion precaution of soil against water erosion. Erosion is calculated by using the universal equation Wischmeier Smith Universal Soil Loss Equation (USLE). Soil loss is solved within the basin catchment, not within administrative boundaries. For this master thesis was chosen cadastral areas Pohorovice, Kloub and Lidmovice. The resulting values are compared with values of a land adjustment project. To reduce erosion loss and protection of agricultural land resources are proposed anti erosion precaution.
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The suggestion of the nature close system of erosion and flood protection in particular land consolidation
PRINCOVÁ, Petra
The target of this thesis is to project a precaution against a flood and erosion in the particular land arrangement. The cadastral unit of Dlouhá Stropnice has been chosen for this purpose which is interesting for its rugged topography and the river system from the erosion and the flood point of view. The description of the area is aimed on its location and its hydrological, geological, climatic and pedologic conditions. In the beginning it was important to consider the present situation of the erosion and flood danger in the cadastral unit of Dlouhá Stropnice. For the creation of the possible danger in this cadastral unit was used the universal equation of the soil loss caused by the water erosion according to Wischmeier and Smith. Thanks to results the problematic areas were defined. The result of this thesis is to project the nature close arrangement against flood and erosion and to evaluate their influence on the erosion and the water outflow in this area.
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Solution of soil protection from erosion in researched catchment.
SMRČKA, Štěpán
Annotation Erosion is a chronic problem in both agricultural and nonagricultural land. Its has an inconsiderable effect on overall stability of landscape. In the case of farming management on agricultural soils the risk of erosive processes increases severalfold. In foothill and mountain areas with dominance of slopes and hills the soil loss during higher maximum 24hrs N-rainfalls can reach up to several tons per hectare. This work deals with the evaluation of soil erosion vulnerability in selected catchment {--} Ostrice catchment {--} in the Lipno reservoir area. The CN method was used for calculations and following evaluation of soil loss.
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Resolution of erosion control measures on model catchment using CN method.
NOVÁKOVÁ, Eva
The goal of this thesis is to evaluate erosion processes and runoff conditions in a part of catchment Zubčický potok containing the land arrangement Věžovatá Pláně. I drew up the area description for this catchment in terms of geomorfological, geological, pedological, climatic and phytogeographical aspect. For the evaluation of erosion processes in the solved area was used the universal soil loss equation by Wischmeier and Smith and in the microcatchment was used the CN method. Further, flow conditions was evaluated using Čerkašin equation. The result of this thesis is evaluation of erosion and runoff conditions, concept of erosion control measures and evaluation their impact on erosion and runoff conditions in the microcatchment.
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