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The article presents the size and weight of needles in 30−year−old Scots pine stands over one year with regard to the site conditions in which they grow (fresh mixed coniferous and fresh coniferous habitats). Two rectangular 1−hectare sample plots, which differed from one another only with the habitat type, were set up in Maszewo forestry in the Cybinka Forest District (western Poland). The plots...
In the era of sustainable and multifunctional forestry, special efforts should be made to designate areas having the status of (multi)functional forest areas (MFA) and to include them in a special development plans. Their operational goals should be: to increase the acreage, to prevent further fragmentation and to preserve the spatial communication between them. Only such an approach will ensure the...
‘Sylwan’ is the oldest Polish forest scientific journal. Over the years it has been presenting methods of forest management planning, providing scientific explanation of various current problems and issues of forestry at home and abroad, thus contributing to the increase of expertise in the field. One of the most important departments of forestry has been forest organisation, which has been discussed...
Forest management is a scientific discipline designed to develop methods of maintaining forest areas and to ensure the sustainable development of forest resources in terms and conditions of multifunctional forestry. This is a branch of practical forestry which deals with inventorying and assessing the state of forests, defines economic tasks and draws up a program of nature conservation for forest...
In Poland, private forests cover the area of 1,774,698 ha, which constitutes 19.2% of total forest area in the country. It is assumed that their actual share is much bigger, because about 300,000 ha of agricultural grounds covered with secondary succession forests, have not been classified as a forest grounds. In 2013, the complete and actual forest management documentation was prepared by 68.7% of...
In the EU countries a forest management plan is a common, however not always obligatory, document updated every 10 years. According to the type of the forest property and its area it may differ in terms of the form and specifity. The forest management in Poland has a long history dating back to the end of 18th century. Nowadays, before each new decade, there is a discussion on the changes, which may...
The implementation of goals of modern forestry requires a simultaneous consideration of sustainable development of forests, protection, needs of the environment development, as well as maintaining a balance between functions of forests. In the current multifunctional forest model, rational forest management assumes all of its tasks as equally important. Moreover, its effects are important factors...
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...
We evaluate an image model for simultaneous reconstruction and segmentation of piecewise continuous images. The model assumes that the intensities of the piecewise continuous image are relatively constant within contiguous regions and that the intensity levels of these regions can be determined either empirically or theoretically before reconstruction. The assumptions might be valid, for example,...
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