Target of this thesis is to assess erosion risks in the region Podkrkonoší. The region Podkrkonoší, especially district Trutnov, is exposed to serious problems of erosion. Significant erosion affected areas in district Trutnov are cadastral areas Kocbeře, Dubenec and Rtyně v Podkrkonoší. Erosion processes are appearing repeatedly on same locations, which cause to massive entrainment of quality topsoil. Thesis is focused on cadastral area Rtyně v Podkrkonoší. This area is the most affected by erosion processes. This thesis describes specific locations repeatedly affected by erosion processes. The most affected areas are: Žabárna, U Trhovky, U Horní zastávky, Pod Bohdašínem, K Bohdašínu, Nad Pekárnou and K Vodojemu. The thesis is monitoring, which types of plants are grown in these areas and in what months erosion processes occur the most often, which kind of anti-erosion precautions are used and how are these precautions effective. The thesis tries to find out, if the erosion processes are repeating due growing of plants in the wide lines (65 cm). The work researches specific land blocks according to their endangerment. Each land block is classified to a category of endangerment according DZES 5 (severely threatened by erosion, slight threatened by erosion and land block which are not threatened by erosion), according to the maximum permissible value of cover-management factor (Cp - severely threateden, threatened, slight threatened and not threatened). Calculation of average soil loss by using methods USLE (equation of Wischmeier and Smith) was used for all of land blocks, which were affected by erosion processes. The result is that in all cases the permissible soil loss (4 t.ha-1.rok-1) was exceeded. In this thesis, anti-erosion precautions were proposed, for example, for locality Žabárna, due to high frequency of erosion processes and therefore high financial losses for land owners, municipality and local residents. Target of this thesis is to ascertain, if the legislative protection of soil in The Czech Republic is adequate.

The thesis is following up on the findings to the issues presented in the Bachelor's thesis, where they were described mainly the methods and materials used to secure the slopes of pipeline, will address not only the final solution method of protection against erosion of the slopes, but in particular all conditioning influences such as the topography, the type and quality of rock and soil in the area of the building, surrounding buildings, and last but not least property relations that can significantly affect the design solution in terms of difficulty of implementation, durability, aesthetics and economic performance of the resulting construction works. Alpha-Omega of the initial phase is the analysis and the interdependence of the issues just for land consolidation, anti-erosion measures, construction procedures in accordance with the geology of the chosen territory and the intended realization of the construction project. The evaluation of the risks associated with this issue on the basis of field investigation, examination with a valid legal legislation, SWOT analysis will be ended.

Erosion is a global problem, which threatens one of the most valuable natural riches of the world, the soil. Erosion is a natural process that has been existing since the very be-ginning; this process is characterized by eroding the soil surface, transporting the soil particles, and the subsequent sedimentation of these particles. In its natural form, ero-sion does not present a big problem, since there are small losses of soil particles, which are sufficiently completed by newly formed particles from the subsoil. The real problem is identified in accelerated erosion which is caused by environment unfriendly human intervention in nature and landscape. In the Czech Republic, around 50 % of arable land is exposed to water erosion. In most cases, it is still a consequence of the collective farming period, when bounds, hedgerows or alleys were ploughed. It is important to be aware of the fact that this situ-ation is not viable for a long period and that it needs solution. The submitted thesis that is divided into two parts focuses on the matter of water erosion in the cadastral area of Stanislavice. The first part, which is theoretical, deals with a review of literature that generally discusses the concept of erosion, its division, causes, consequences, and possible anti-erosion measures. The second part is related to the practice and it is particularly linked to the erosion issue in the cadastral area of Stani-slavice. It also involves an analysis of the current situation and conditions in the cadas-tral area of Stanislavice, using the Wischmeier-Smith equation that defines the degree of land erosion risks. In the conclusion, appropriate erosion control measures are designed in order to diminish the erosion rate.

This thesis deals with the issue of modern methods of water erosion determination. These methods of measuring soil erosion processes have been used: USLE equation, ERCN program, SMODERP model and application of USLE2D in GIS. Individual results were compared and their applicability was evaluated. Use of individual methods demonstrated big difference between ERCN and USLE results. ERCN also contained outdated values of erosion factors. SMODERP model provides different type of output data and model is not very expanded but outputs of simulation can be used for designing erosion control measures. USLE2D results were almost the same as USLE equation results. This method has the potential to replace manual USLE calculation. SMODERP model has been shown as useful for design of technical erosion control measures.

No description available.

No description available.

No description available.

No description available.

Erosion is phenomenon, which continues to expand around the world and it is important to reduce its negative effects on both agricultural and non-agricultural lands. This thesis assesses impacts of anti-erosion measures of organizational, agrotechnical, technical character and their combinations modeled in GIS. The effects of four model crop rotation methods are compared here in combination with different variants of agro-technical measures. Then in the most critical lands have been compared the influences of the most apprepiate individual proceeding. Literature review introduces the reader to the problems of water erosion, modeling and solving anti-erosion protection.

Student thesis deals with soil conservation from effects of water erosion. In most territories, where land adjustment were done still, only mild erosion threat was found out and designed against {--} erosive measures were consequently minimal in these areas. There were mostly expulsion of maize from crop rotation, grassing or projection of a new rural road so as it interrupts slope. For example of such land adjustment there was complex land adjustment Vitín adduced and evaluated. Land adjustment Horní Stropnice was chosen for more detailed solution, there was a higher erosion threat found out by calculation of soil transport. The area was split in blocks, in which soiltransport was counted by means of Wischmeier-Smith equation for various values of factor R. Then soiltransport after realization of against {--} erosive measures was counted. Component against {--} erosive measures were evaluated and their execution in terrain was found out. Results show a problem with determination right value of factor R and a fact, that designed against {--} erosive measures stay mostly unimplemented.