Journal of Forest Science, 2020 (vol. 66), issue 1
Prediction by financial and economic analysis in the conditions of forest enterprisesReview
Andrea Majdáková, Blanka Giertliová, Iveta Hajdúchová
J. For. Sci., 2020, 66(1):1-8 | DOI: 10.17221/84/2019-JFS 
Individual companies need to know their financial condition. They have a wide range of methods and procedures to create a system of the financial and economic analysis of a company. The analysis is focused on the evaluation of a specific group of methods for predicting the financial health of a business entity. Evaluations of the financial situation of a company are divided into point methods, mathematical and statistical methods and neural networks. The individual methods differ from each other in difficulty, in the extent of the analyzed areas and possibilities of application. The aim of this work is to assess the possibilities of using selected...
Work sampling and work process optimization in sonic and electrical resistance tree tomographyOriginal Paper
Martin Baláš, Josef Gallo, Ivan Kuneš
J. For. Sci., 2020, 66(1):9-21 | DOI: 10.17221/66/2019-JFS
Using non-destructive techniques in investigating tree stem rots is a modern approach in arboriculture and urban forestry. We used PiCUS® 3 Sonic tomograph (SoT) and TreeTronic® electrical resistance tomograph (ERT) to inspect the health status of urban and park trees. The process of setting up the device and measuring is time demanding as it requires numerous delicate operations. The aim of the study was to evaluate the time needed for measurement and to propose an optimal workflow. The results of work sampling suggest that scanning of one average-difficulty tree by SoT...
Uneven-aged silviculture of Scots pine in Bohemia and Central Spain: comparison study of stand reaction to transition and long-term selection managementOriginal Paper
Josef Gallo, Lukáš Bílek, Václav Šimůnek, Sonia Roig, J. A. Bravo Fernández
J. For. Sci., 2020, 66(1):22-35 | DOI: 10.17221/147/2019-JFS
The achievement of sustainable forest management requires the incorporation of ongoing environmental changes into long-term planning. Moreover, in time of climatic change and changing company demands, importance of Scots pine (Pinus sylvestris L.) is still increasing at the expense of other tree species due to its low ecological requirements. The aim of the study was to compare the structure and production of Scots pine stands managed under different silvicultural systems on four research plots, assess the structural and diversity indices, and analyse the increment structure using tree-ring dating in the Czech Republic and...
Spontaneous development of early successional vegetation improves Norway spruce forest soil after clear-cutting and renewal failure: a case study at a sandy-soil siteOriginal Paper
Ondřej Špulák, Dušan Kacálek
J. For. Sci., 2020, 66(1):36-47 | DOI: 10.17221/150/2019-JFS
Clear-cutting is the most common silvicultural system. Sometimes, if the new crop is not established successfully, clearcut is left unreforested. This study focused on a site where early successional species such as silver birch (Bi) and rowan (Ro) were accompanied with Norway spruce (Sp) in 13-year-old stand from natural regeneration at 550 m of altitude at an acidic site with eastern aspect and 25% slope. We found five types of stand composition: treeless gaps, Ro-Bi, Ro-Bi-Sp, Bi-Sp and monospecific Sp. Besides these juvenile ones, adjacent 100-year-old spruce (Sp old) stand representing pre-harvesting conditions was studied. In...