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Causes, impacts and solutions erosion in the region
Nocarová, Martina ; Janků, Jaroslava (advisor) ; Karel, Karel (referee)
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.
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