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Přihlášení
1/2014
Prediction of siltation processes in reservoirs
Natália Junáková, Zuzana Kleščová, Marcela Gergeľová
Abstract
There are many reservoirs that can no longer perform their design functions because much of their original active storage volume has been filled by sediment. Geographic information systems (GIS) offer a powerful tool for predicting future scenarios about reservoir siltation processes.
The aim of this paper was to assess the erosion intensity in the Tisovec stream catchment (Slovakia) using the Universal Soil Loss Equation (USLE) in a raster geographic information system environment. Through GIS also the prediction of the Klusov reservoir silting with eroded soil particles in dependence on the crop rotation applied in the catchment was displayed graphically.
Prediction of reservoir silting using GIS shows that this reservoir should became silted to 30 % in following 15 years when growing less suitable plants in the Tisovec stream catchment and to 16 % with growing plants with better erosion control effect.
Keywords: erosion, GIS, sediment, USLE
original scientific work
Comparison of Invest and ARIES tools focusing on recreational ecosystem services
Vilém Pechanec, Pavel Cudlín, Ivo Machar, Helena Kilianová
Abstract
Ecosystems provide settings for a hugely diverse array of recreational activities. Recreational values are among the most well-recognized of all ecosystem services by the public, and human preferences for recreation have been well-studied by economists and other social scientists. From a spatial perspective, we can map sources of recreational value, sinks of recreational value, users of a particular recreation area for a given activity, and the spatial flow that connects users to specific recreational areas. The text presents two key approaches of modelling tools InVEST and ARIES. Methodological approaches are compared with each other and the requirements for data confronted with national data sources.
Keywords: approaches, ARIES, InVEST, compared
original scientific work
A proposal for the tourism attractiveness in the south-west part of the Slovak rural landscape
Andrea Jakubcová, Henrich Grežo, František Petrovič
Abstract
The term of tourism contents many approaches and interdisciplinary scientific points of view. In the frame of multi-dimensional conception it is necessary to set apart more dimensions of study. In our paper we focused, which physical - geographical (PG) factors and landscape features impact to the possibilityof a country to perform tourism in Slovak rural space. On the example of chosen cadastral territory of the Kamenica and Hronom and Chľaba villages, we tried (with special methods of graphical and geographical visualization) to make a proposal how to improve such kind of rural space and make it more attractive for sustainable tourism. We explored, whichPG parameters are related to the level of space attraction in a specific part of the rural landscape in the SW Slovakia, and how they are related spatially to each other. From these graphical results we tried to make a new proposal of two operating version of the nature educational trail in two cadastral territories, which are situated in “Burda” national natural reserve and the adjacent lowland countryside. Finally,in the frame of this trail proposal, we created some factual arrangements,which could be necessary as for practicingpotential forms of tourism in this part of Slovakia.
Keywords: tourism, Slovak rural space, physical-geographical parameters, nature educational trail, National Natural Reserve of Burdov
original scientific work
Use of GIS and hydrological models in the process of implementation European Directive 2007/60/EC in the field of flood management
Marcela Gergeľová, Žofia Kuzevičová, Martina Zeleňáková, Jan Unucka, Štefan Kuzevič
Abstract
In the context with the solution of flood issue is an effort on the part of all stakeholders to reduce the negative impacts of floods on the lowest acceptable level. It is also developed effort to effectively prevent their recurrence occurrence. In the above context directive was adopted of the European parliament 2007/60 EC, which has been transformed at all member states into legislative regulations and laws in order to most effectively prevent the floods. In order to fulfill the substance of the document is necessary to develop effective tools to reduce the consequences of that problem. Geographical information systems have a wide scope and also have their place in the flood problem. Together with hydrological models are tools for creating flood risk maps and flood hazard maps, which define the area prone to flooding.
Keywords: GIS tools, hydrodynamical models, Directive 2007/60/EC
original scientific work
The current state of revitalization evaluation of watercourses in terms of recreational potential of the model area of the river Ostravice in Ostrava
Ivana Lampartová, Jiří Schneider
Abstract
The current goal of revitalization measures in the landscape primarily consists of the optimization of landscape water regime, incl. flood control measures and the promotion of biodiversity, but the current philosophy speaks of multifunctional land usage. However, the revitalization is currently underappreciated in the Czech Republic and it is important to increase the recreational potential of the landscape. In the society there has been indicated the necessity for recreation, because a large part of the population lives in urban settlements and is employed in an artificial technical environment that has largely inadequate sanitary conditions (unfavourable microclimate, noise, dust, etc.). Recreation as a social phenomenon is therefore a permanent part of the lifestyle in economically developed countries. The submitted issue highlights the necessity for revitalization ofwatercourses in terms of recreation potential.The subject of this article is evaluation of revitalization measures from the point of view of recreation potential in Ostrava region.The model area of river Ostravice in Ostrava region is described here.In the model area is evaluatedsome elements ofrecreational potential of revitalization by the proposed methodology.
Keywords: revitalization measures, recreational value, evaluation methodology
original scientific work
Willingness to pay for services provided by forest ecosystems of the Training forest enterprise Masaryk Forest Křtiny
Petra Hlaváčková, David Březina, Dalibor Šafařík
Abstract
The objective of the Development Project research of the Faculty of Forestry and Wood Technology Mendel University in Brno, implemented as an extensive Training Forest Enterprise Masaryk Forest Křtiny (TFE) case study, consists in the quantification of the potential and economic importance of forest recreational ecosystem services. The text gives the results of a portion of a survey carried out in the Bílovice nad Svitavou forest district. This portion of the survey was evaluated using the contingent valuation method based on respondents' willingness to pay for services provided by the forest recreational ecosystem. Specifically, in the case of the Bílovice nad Svitavou forest district, this concerns the willingness of visitors to pay for services consisting of the use of forest haul roads, cycle paths, meadows and minor structures within the forest infrastructure. The questionnaires were prepared with reference to foreign publications and case studies. The survey showed that visitors are not willing to pay for recreational services provided by this area, in particular because they perceive Training Forest Enterprise Masaryk Forest Křtiny forests to be a public asset which should be accessible free of charge. Further, issues with the method used were discovered in terms of the expression of an actual willingness to pay and the acquisition of relevant data from respondents. This confirmed the need to find a new way to evaluate the recreational potential of the area based upon relevant economic data.
Keywords: contingent valuation, economics, ecosystem services, forestry, questionnaire survey, recreation functions, willingness to pay
original scientific work
Interactions of recreation and landscape protection in Slovakia
Attila Tóth, Mária Bihuňová, Denisa Halajová, Roberta Štěpánková
Abstract
Recreational use and protection of nature and landscape are usually perceived as two conflicting approaches taking place in urban, peri-urban and rural landscapes. Natural and semi-natural areas, especially those adjoining or well connected to urban areas, are often utilised for recreation, leisure activities or tourism. These uses can lead to conflict situations between protection and outdoor recreation. In this paper, we define those features of recreation which can have a negative impact on the landscape and we come up with contemporary design and planning strategies integrating recreation and protection into one inclusive approach. The aim is to lower the negative impact of leisure activities and develop a new, multipurpose approach in land use planning which could replace the conventional bipolar understanding of this problem. A properly designed outdoor recreational infrastructure, considering the multifunctionality of the landscape, can convert recreation from a stressing factor to a supporting tool of nature and landscape preservation through implementation of environmental education and raising public awareness.
Keywords: recreational infrastructure, environmental education, design of recreational places, legislation, Slovakia
original scientific work
Methods for determination of grain size curves
Hana Uhmannová, Lukáš Smelík
Abstract
The solving many tasks in water management is based on knowledge of basic material characteristics of the river bottom and slopes. Most of methods are based on knowledge of grain size percentile. When creating a grain size curve is an important selection of suitable locations and methods for sampling. If the river bottom is created by rough material (stone, cobble, boulder), it is necessary to determine the distribution curves attention.
Keywords: grain size percentile, Wolman’s method, sieving, channel bed material, grain size curve
original scientific work
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