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Wyszukujesz frazę "forest economics" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Ocena wpływu wybranych zabiegów hodowlanych i typów siedliskowych lasu na koszt pozyskania surowca drzewnego w czyszczeniach i trzebieżach
Evaluating the impact of silvicultural treatments and forest habitat type on the cost of timber harvest in cleanings and thinnings
Autorzy:
Adamowicz, K.
Gostołek, R.
Jaszczak, R.
Szczypa, P.
Szramka, H.
Powiązania:
https://bibliotekanauki.pl/articles/989459.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
typy siedliskowe lasu
zabiegi hodowlane
pozyskiwanie drewna
koszty
trzebieze
czyszczenia pozne
forest economics
forest habitat type
costs
silviculture
Opis:
Integrating the economic aspects of forest management (cost) with ecological elements of timber production (habitat type) significantly contributes to a better understanding of forest growth and utilisation. The type of silvicultural treatments and forest habitat types determine number of economic activities carried out in the stands and have an important impact on the associated costs. The aim of the study was to describe the impact of silviculture treatments and types of forest habitat on unit timber harvesting cost. We summarised the cost of timber logging depending on the harvest practices and types of habitats. In total, costs of treatments performed on the 2.5 thousand ha area were analysed. Obtained results were combined in relation to average unit costs of raw timber logging from individual habitats and silviculture treatments such as late cleanings and thinnings. The studied impact was assessed with standard deviation (SD) based on the assumption that the higher its value, the more important role of silvicultural treatments and forest habitats in defining the cost of raw timber harvesting. Our study showed that both factors (type of forest habitat and silvicultural treatment) had an effect on variability of timber logging costs. Comparing deciduous and coniferous habitats, higher costs were reported for the latter one. The highest unit cost of timber logging was found on the fresh coniferous habitat, while the lowest on the wet mixed forest. Moreover, the highest cost was reported for timber raw material harvested from late cleanings and the lowest from late thinnings. SD of the average cost of timber harvest ranged from 12.67 to 13.53 PLN depending on the silviculture treatments and from 0.68 to 2.39 PLN depending on the forest type. Our findings are important preliminary steps in broader study regarding revenues generated from forest stands growing on different habitats. Eventually it would help in assessing the profitability of economic activity that depends on environmental conditions of forest management.
Źródło:
Sylwan; 2016, 160, 12; 993-1001
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wad drewna wielkowymiarowego na przychody z jego sprzedaży
Effect of defects on income from the sales of large dimension timber
Autorzy:
Szramka, H.
Bieniaszewski, T.
Auguścik, L.
Bobek, J.
Adamowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/987045.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ekonomika lesnictwa
surowce drzewne
obnizenie jakosci
drewno wielkowymiarowe
wady drewna
drewno
sprzedaz
przychody
Nadlesnictwo Zaporowo
forest stands
health
timber
wood defects
forest economics
Opis:
Harvested timber has many various wood defects. Analyses were carried out on material collected in Zaporowo Forest District (northern Poland). Results show that various defects were found in 35% of harvested timber on average. The share of timber with defects varied among individual species (pine – 44%, spruce – 22%, oak – 14%, birch – 9%, beech – 5%, lime and larch – 2% each, hornbeam and alder – 1% each). The individual wood defects appeared in harvested timber with following frequency: knots – 55%, knobs – 22%, foreign bodies – 7%, curvature – 5%, inner rot – 5%, galls – 2%, blue stain – 1%, insect holes – 1%, false heartwood – 1%, and cracks – 1%. Timber defects resulted in reduction of income from the sales. A decrease in income caused by various defects amounted from 0.07 PLN/m3 for brown sap stain to 68.83 PLN/m3 for knots. The greatest effect of wood defects on the reduction of income from sales was recorded for oak timber (518.30 PLN/m3), while the smallest for aspen (4.63 PLN/m3). Due to the fact that in almost all analysed tree species the dominant effect on the reduction of income from timber sales was caused by knots (open knots and knobs) systematic solutions need to be found in order to reduce the effect of this defect. It is particularly important in the case of oak timber, where a decrease in income from timber sales connected with this defect was the greatest.
Źródło:
Sylwan; 2017, 161, 03; 238-246
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kierunki modyfikacji statusu Lasów Państwowych w Polsce
Trends in modification of the status of the State Forests in Poland
Autorzy:
Szramka, H.
Adamowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/989041.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
status organizacyjno-prawny
zarzadzanie
kierunki zmian
forest economics
legal status
organisation
changes trend
Opis:
Over the last years, criticism of the State Forests policy has been becoming more and more frequent in the press. For that reason it is very important to inspire changes in the State Forests organisation system that will result in its adaptation to the changing requirements of the social market economy. From the economic point of view one of the most important problem is that the State Forests is an economic organisation without legal personality. This fact facilitates unjust criticism of this entity that leads to restriction in its economic activity and eventually decreases maximum gains from its resources. We present trends of changes from status quo across legitimate company to joint stock union and the budget unit. It is proposed to confer legal personality on the forest economic units so they become legitimate companies. Moreover it is also suggested to use the State Forests profits as evaluation criteria of its economic activity. The generated profits should be sufficient to protect owner (i.e. the state) interests and is intended to implement them to achieve important social and economic features. In addition, a new motivation system based on the incomes considering the interest of the state, company and the employers should be developed. In order to reduce conflicts that arise from limited ability to use environmental and social functions, efforts should be made to precisely determine leading functions of chosen forest areas. The main goal of the proposed legal and organizational reform of the State Forests is to create conditions to generate higher legal revenues from various from of forest activity and allocate them for implementation of non−economic forest functions. This would make possible to achieve greater social acceptance of actions made by the franchise.
Źródło:
Sylwan; 2017, 161, 05; 355-364
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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