Národní úložiště šedé literatury Nalezeno 5 záznamů.  Hledání trvalo 0.01 vteřin. 
WINTER RECREATION AND SNOW
Zahradníček, Pavel ; Rožnovský, J. ; Štěpánek, Petr ; Farda, Aleš ; Brzezina, J.
Climate assessment should not be limited to just statistical analysis, but also look at relationships in data and its uses in other areas of everyday life. One such area is tourism and recreation, which is also to a great extent influenced by the weather. This paper focuses on the winter season and the related possibilities for tourism. One of the key factors is snow conditions of the particular place. This analysis takes into account the amount of new snow and maximum snow depth and changes in these parameters as a result of the current global climate change. Especially in the last 15 years, years with less snow are more frequent and this is especially seen at highest altitudes of the country. The study also analyzed outputs of climate models with regards to winter season, including calculations of the number of melting days.
USE OF NORWAY SPRUCE AS ADMIXTURE IN SUBURBAN FORESTS AT LOWER ALTITUDES
Novosadová, K. ; Knott, R. ; Szatniewska, Justyna
In suburban forestry there is a need not only to manage a maximum financial result, but also to support recreational and aesthetic forest functions. Thus, these forests need professional treatments in the form of proper silvicultural methods to maintain stand stability. One of these methods is cultivation of mixed stands with Norway spruce. This study examines the mortality of spruce growing in stands in lower forest vegetation zones with time series of 50 years and the changes in biomass production in young variously mixed stands in three different vegetation zones. According to the results, it is beneficial to grow spruce in the range from 5 to 10% of admixture in stand establishment stage. Due to silvicultural treatments and inter species interactions, spruce representation in a stand may increase to 30% in the mature stands. Spruce trees tended this way in young age partly will be outcompeted by other species, but the remaining individuals will adapt to the existing environmental conditions and thus the whole stand will be more stable. Biomass production of spruce trees depends on its representation in the stand. The higher the spruce admixture, the lower will be average spruce tree biomass. The study indicated that in young stands up to 30% of spruce representation, its biomass was up to 100% greater than in spruce monocultures.
Settlement of the landscape with European beaver (Castor fiber) in relation to anthropogenic influences
Mikulka, O. ; Patočka, Z. ; Drimaj, J. ; Kamler, J. ; Plhal, R. ; Homolka, Miloslav
The European beaver (Castor fiber) is a protected species in the Czech Republic that has spread to the whole of Moravia. Now, it is a common species whose competitor is only human. The aim of this study was to evaluate the impact of human activity, especially tourism or transport, on the settlement of the landscape by the European Beaver. The area of the protected landscape area Litovelske Pomoravi was chosen to evaluate the settlement of the landscape by the beaver, where the beaver forms a stable population for a long time and the frequented cycling routes, hiking trails and the area are frequently visited by natural floodplain forests. The beaver settlement data were collected by means of the winter monitoring of residential stamps using the GPS system in 2017. Data on the location of cycle routes, hiking trails, human settlements and infrastructure were obtained from available GIS layers. Settlement of European beaver was evaluated in relation to the distance and intensity of interference by tourist activities, traffic or buildings. There were 200 km of watercourses in the monitored area. The inhabited beaver was 39% of the length. The beaver avoided human settlements, preferring the natural environment. The influence of tourism on the beaver settlement has not been proven.
DYNAMICS OF WINTER SEVERITY AND ITS EFFECT ON RECREATION
Zahradníček, Pavel ; Rožnovský, J. ; Brzezina, J. ; Štěpánek, Petr ; Farda, Aleš ; Chuchma, F.
Air temperature in winter months and colder half-year is an important factor for wide range of human activities, including recreation. As a result of current climate change, average air temperatures increase in winter as well. This, however, does not mean that there are no frosts. Each winter season can be assessed using several parameters. In this paper we used the sum of effective air temperatures below 0 degrees C and- 5 degrees C. Absolute minimum air temperature was used as an indicator of the extremity of a particular period. Space-time analysis has been performed for both parameters. Air temperatures in winter months are to a large extent influenced by the continentality of the climate. In general, the temperatures in Bohemia rise faster compared to Moravia and the absolute lowest minimum air temperatures are observed in the Western parts of the country. Based on a multiparametric analysis of climate characteristics, the coldest winter and colder half-year was in 1963, in contrast, the mildest winter was in 2007.
Current possibilities for quantification and modeling of recreation services
Pechanec, V. ; Cudlín, Pavel ; Machar, I. ; Kilianová, H.
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.

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