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This study has been carried out in the Polish Roztoczański National Park and the Ukrainian Ravs’ke Roztochia Regional Landscape Park, both of which are part of the Roztoche region. In each of these two locations, representative study plots were established in beech (Fagus sylvatica L.) stands occupying sites with similar environmental conditions. A longterm prognosis for the dynamics of the chosen...
In the current age, the increased need for the restoration of forest ecosystems necessitates a better understanding of natural processes. Forest stands that are affected only by natural processes and disturbances can serve as references and controls for comparison with cut or otherwise managed forests. Such a comparison may help us determine, whether our sylvicultural practices actually pursue the...
Since its initial discovery in 1945, pitch canker caused by Gibberella circinata (anamorph Fusarium circinatum) has become one of the most important pine diseases in the world. It infests 57 pine species (including Pinus sylvestris) and Douglas−fir. F. circinatum has been reported in both nurseries and forests on all continents except Australia and Oceania. Both vegetative and reproductive parts of...
The article presents the results of the survey on the preferences of disabled people on wheelchairs for selected features of recreation in forests. The study was conducted in 2015, including a sample of 108 people over the age of 18 interviewed simultaneously in the Poland and Czech Republic (52 interviews in Poland, 56 in the Czech Republic). Respondents were questioned both at the premises of the...
The paper presents comparative characteristics of the length as well as start and end dates of the forest vegetation period (FVP) in the years 1981−2010 determined on the basis of the average daily air temperature and data generated for the conditions of two−fold higher CO² concentration. To simulate meteorological data for that conditions, we applied the WGENK data generator, considering assumptions...
The objective of the study was to analyse the site index (SI) of Douglas fir (Pseudotsuga menziesii) stands in relation to the forest habitat type, soil type and relief characteristics. We utilised information available in the Information System of the State Forests in Poland that included selected parameters describing habitat conditions and dendrometric characteristics of Douglas fir stands. In...
In most of European countries, basic information about forests that is used for its monitoring and formulation of national policies comes from the National Forest Inventories (NFIs). Assessment of forest resources at the national level was initiated in Poland in 2005. In 2014, the second cycle of NFI was completed. Since 2010, results of NFI are the main source of information about the amount of forest...
In Poland, the public believes that the main objective of urban forests is rather to conduct forest management focused on the recreational needs of residents than to produce timber. Considering this belief, it becomes reasonable to distinct the principles of forest management in urban forests from those related to the forests of the State Forests National Forest Holding. Because of the permanent presence...
Korniki: drzewotocz japoński - Xylosandrus germanus (Bldf.), drwalniczek – Xyleborinus attenuatus (Bldf.), drwalnik – Trypodendron laeve i Gnathotrichus materiarius (Fitch) Egg. (Coleoptera, Curculionidae, Scolytinae) to obce gatunki w faunie Polski. Drzewotocz japoński Xylosandrus germanus jest też gatunkiem inwazyjnym, który znany jest z 11 stanowisk w prawie całym kraju. Liczebność tego gatunku...
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