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An impact of organic farming on soil quality
Matěchová, Martina ; Jakšík, Ondřej (advisor) ; Janků, Jaroslava (referee)
This work focuses on the system of organic agriculture and its impact on soil quality. It compares organic farming system with conventional. Both these systems are briefly described. There is also a list of soil quality indicators used for the soil quality is evaluation. The results of scientific studies, which dealt with different farming systems and their effects on soil properties, were discussed and evaluated.
Quality and fertile soil is crucial for production systems, however to define what means quality soil is very difficult. Therefore the number of quality indicators were established. The indicators can be grouped by their nature of soil properties they assess, such as physical, chemical and biological. Different techniques are adopted for soil quality evaluation.
Soil quality is affected by a lot of different factors. Anthropogenic activities are often considered as one of the most influential factor. The loss of soil fertility as well as other physical, chemical or biological deterioration of soil properties is called soil degradation.
The results of this study shown that careful tillage in organic farming could have positive effect or no effect on the biological and physical properties of soils. For some experiments there was an increased amount of soil organisms.
In the most experiments, application of organic fertilizers caused increase of organic matter and other essential nutrients. We conclude that under certain conditions with respect for the principles of organic farming the soil quality can be preserved or even improved, but in a longer timeframe.
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Human impact on creating the landscape
Lainová, Dana ; Janků, Jaroslava (advisor)
This bachelor thesis focuses on the differences in landscape structure caused by human influence in nature conservation area Czech paradise. It guide us though period from year 1955 until the present. It take into consideration both the previous and current landscape form, as for land area, landscape character, plant and animal association and abiotic factors. Bachelor work describes particular human influence on forming aspect of this natural heritage. It focuses on forestry and forest cover situation, agriculture and farmland. It does not forget hunting and its related situation of wild animals, fish farming which means purity of water. It will occupies water management and its watercourses modification. Least but not last it concentrates on infrastructure and related development and structural engineering. Attention will be aimed at sewage management, industry and natural raw materials extraction. It has to be mentioned the areas of tourism, mountain climbing and recreation, which should be kept only in marked areas and in accordance with nature conservation. Based on findings from individual areas is possible to compare what an impact did a human being on forming aspect of landscape of Czech paradise from year 1955 until the present. Even for such short time of history, it can be observed large change in landscape character or species association. For the future it will be necessary to reduce intensity of landscape recasting and more focus on conservation of indigenous of this nature heritage.
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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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An analysis of land fund of Benešov district
Škorvagová, Jana ; Janků, Jaroslava (advisor) ; Jan, Jan (referee)
The thesis deals with the analysis of land in the district Benešov cadaster data. Work has drawn attention to changes in land use and landscape and point out the loss of farmland.
Review of literature deals with land registry and its history, the definition of certain terms such as: landscape, soil and its functions, sustainable development, land resources, the built environment, suburbanization, brownfields etc. Attention is paid to the agricultural land resources and its protection, further breeding and valuation of agricultural land in the Czech Republic.
The work is based on statistical yearbooks cadaster, also briefly describes the method of analysis that has been used, it is a regression analysis. Then there is briefly characterized district Benešov.
It was followed the trend of development land fund for the period from 1966 to 2015. The results showed that the area of farmland, of which mainly arable land and orchards decrease over time and across the acreage of forest land, built-up areas and courtyards, other areas and water areas and gardens are growing process.
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An analysis of land fund of Domažlice district
Hovorka, Jan ; Janků, Jaroslava (advisor) ; Jan, Jan (referee)
This thesis analyzes the land in Domažlice. In this border region is experiencing significant changes in land use and thus to changes in the structure of the landscape. The work focuses mainly on the protection of soil and landscape structure in that region. It deals with not only trends in land, but the whole system of processes that changes in land fund raises. Therefore, it is also engaged in the wider context of spilling over into other areas.
In the introductory section readers outlines the social significance of soil and land resources, but also the landscape and its structure. The following describes some of the processes that occur in the country, including their impact. The following section is devoted to real estate records (katastrům), their importance and fundamental historical changes in the register of real estate. He also records of agricultural land. Subsequently also describes factors that affect the status of the land fund of the Czech Republic, including state policy and the European Union. There is described a land market and the price of land in the Czech environment. The whole chapter is concluded by a brief description of the historical development until now. The literature search should provide an overall view of issues, including relations with adjoining areas.
Another part is devoted to the identified region Domažlice. There are analyzed the conditions and diversity of this region and its historical development, because only with such knowledge can achieve an objective assessment of the issue. It also established a methodology for the job.
Part of the results is devoted to the results of background and results of individual investigations, which are in the following section compared with current scientific knowledge and partly to the socially accepted attitude.
The conclusion summarizes the results of this thesis and provided the achievement of hypotheses that have been identified in the introductory part. There are also problems outlined and possibly offered the best solution. Part of the annex is devoted to image the documents, which illustrate the text part.
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An evaluation of erosion risks and design of erosion control measures in selected cadastral area
Janota, Petr ; Janků, Jaroslava (advisor) ; Karel, Karel (referee)
Erosion is exogenous geomorphological process that affects the formation of the Earth's surface since the formation of the Earth's solid crust. This activity, which under natural conditions proceeded slowly, in terms of human generations imperceptibly, in intensively used landscape dramatically accelerated and brought a number of adverse consequences. The aim of this study has been to assess and evaluate erosion risks in selected cadastral area and in the event of an over limit erosion hazard to suggest appropriate erosion control measures to eliminate the increased erosion.
The 77 erosion of closed units were examined by a computer program Atlas DMT erosion module, which uses digital terrain model together with data from databases or BPEJ or LPIS. The 14 of them have diagnosed overlimit value wash away the soil. As a basic erosion control measures the change of applied classic crop rotation to crop rotations using soil conservation technologies was considered. After adjusting cropping practices that positively impact factor of the protective effects of vegetation, it was found by erosion Atlas module, six parcels of land with over limited value of soil washes. These lands have suggested the use of technical erosion control measures, for example furrows, grassing thalwegs etc.. On the parcels, where, due to their size, shape or morphology technical measures proved inadequate or ineffective it has been proposed permanent grassing.
In the proposals erosion control measures it is necessary to combine the maximum efficiency of measures with condition of ease and minimal restriction of land users. When their making is to be assumed towards the user, because it depends on him only whether the proposed organizational and agronomic measures will be implemented or not. The fundamental problem with these measures is that their implementation is not backed by legislation. I assume that the more acceptable, less restrictive and inexpensive measures will be proposed, the more likely it will be implemented. One of the reasons why even the simple erosion control measures are put into practice slowly and with difficulty is the fact that in the Czech Republic the most of the agricultural land is managed by entities that are not its owners. This fact significantly contributes to the fact that land is viewed merely as a means of production, which must to bring maximum profit only. To improve this situation may also contribute to the establishment and consistent control of the GAEC standards.
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An impact of organic farming on soil quality
Matěchová, Martina ; Jakšík, Ondřej (advisor) ; Janků, Jaroslava (referee)
This work focuses on the system of organic agriculture and its impact on soil quality. It compares organic farming system with conventional. Both these systems are briefly described. There is also a list of soil quality indicators used for the soil quality is evaluation. The results of scientific studies, which dealt with different farming systems and their effects on soil properties, were discussed and evaluated.
Quality and fertile soil is crucial for production systems, however to define what means quality soil is very difficult. Therefore the number of quality indicators were established. The indicators can be grouped by their nature of soil properties they assess, such as physical, chemical and biological. Different techniques are adopted for soil quality evaluation.
Soil quality is affected by a lot of different factors. Anthropogenic activities are often considered as one of the most influential factor. The loss of soil fertility as well as other physical, chemical or biological deterioration of soil properties is called soil degradation.
The results of this study shown that careful tillage in organic farming could have positive effect or no effect on the biological and physical properties of soils. For some experiments there was an increased amount of soil organisms.
In the most experiments, application of organic fertilizers caused increase of organic matter and other essential nutrients. We conclude that under certain conditions with respect for the principles of organic farming the soil quality can be preserved or even improved, but in a longer timeframe.
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Koncepce a metodologie komplexního studia dlouhodobých trendů vývoje krajiny v užším a širším zázemí JE Temelín: Stanovení potenciálních změn kvalitativních a kvantitativních parametrů půd s ohledem na způsob a intenzitu jejich využívání a zranitelnosti vůči antropogenní zátěži na základě historických podkladů a aktuálních výsledků sledování
Česká zemědělská univerzita v Praze, Fakulta agrobiologie, potravinových a přírodních zdrojů, Katedra pedologie a geologie, Praha ; Penížek, Vít ; Janků, Jaroslava ; Němeček, Jan ; Kozák, Josef
Výsledky řešení za rok 2005, kdy byly řešeny dva úkoly a) monitoring půdních charakteristik, u nichž lze předpokládat určitou dynamiku v rozsahu sledovaného období a b) dokončení digitální mapy půd zájmového území JETE. Půdní mapy tvoří přílohy ke zprávě.
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