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On August 11−12, 2017, a hurricane passed from south to north of Poland causing considerable damage to forests, especially in regional directorates of the State Forests in Wrocław, Poznań, Toruń, Szczecinek and Gdańsk. By the end of 2018, the volume of wind−broken and wind−fallen trees and deadwood approximated to 9 million m³. In 9 forest districts the harvested volume exceeded 440 thousand m³, including...
The present work makes an attempt to recognize the kind of logrolling means used while logging on the basis of range of disturbances of the top soil layer. The investigation covered horse skidding and skidding made with the MultiFKS hoisting winch. Graphical analysis of the diagrams representing disturbances characteristics of the top soil layer (surface and volume) allows one to perform correct recognition...
The paper presents the dimension of damage in fir and spruce upgrowth during light felling, carried out in predominant stand of mountain forests. The work was limited to the analysis of damage in up growth. Weak relation between the quantity of obtained wood and the dimension of damage in renovations defined to what extent the morphological build of predominant forest and trees location in the area...
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