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Wyszukujesz frazę "Wysocka, J." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Określanie standardowych kosztów jednostkowych wybranych prac z zakresu hodowli lasu
Determination of standard unit costs of selected works from the silviculture
Autorzy:
Kocel, J.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/979003.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
hodowla lasu
prace hodowlane
odnowienia lasu
zalesianie
koszty jednostkowe
standaryzacja
leśnictwo
prace pielęgnacyjne
standard costs
silviculture
grouping method
‘technological' method
financial system of the state forests
Opis:
The article presents the standardization of costs of silviculture treatments (reforestation and afforestation, corrections and overplanting, forest tending) with the method of grouping forest districts with similar natural conditions and the ‘technological’ method. The standard costs were compared with the real costs, and the applied methods were assessed in terms of their suitability for the State Forests financial system. Source materials were obtained for 2017 from the databases of the State Forests Information System. The base for determination of the value of the average monthly gross remuneration by poviats for forest districts and regional directorates of the State Forests for 2017 was information obtained from the Local Data Bank of the Statistics Poland and announcements of the President of the Statistics Poland on average remuneration in the national economy. The standardization method of unit costs in silviculture based on groups of forest districts with similar natural conditions boiled down to determining 12 uniform groups of forest districts in terms of the structure of forest habitat types. The ‘technological’ method consisted in building technological models of works in silviculture using the labor−consumption catalogues in force in the State Forests. The relationship between the developed standard costs and the weighted average real costs was calculated using the Spearman correlation. It achieved lower values for all analyzed treatment groups compared to the dependencies related to cost standardization using the ‘technological’ method. Comparison of deviations of reforestation and afforestation as well as corrections and overplanting calculated by two methods with real costs determined in regional directorates of the State Forests using the Wilcoxon test allowed to indicate regional directorates, in which underestimation of standard costs concerned both analyzed methods occurred. Forest districts included in these directorates should be subjected to careful analysis. To standardize unit costs of reforestation and afforestation, as well as corrections and overplanting, it is proposed to use the method of determining standard unit costs on the basis of groups of forest districts with similar natural conditions. The ‘technological’ method should be used to standardize unit costs of forest tending. However, one should take into account the overestimation of standard costs in comparison with the actual unit costs of this group of activities, especially in forest districts with high competition on the forest services market.
Źródło:
Sylwan; 2020, 164, 03; 196-205
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena naturalnego i sztucznego odnowienia drzewostanów sosnowych Pinus sylvestris L. w Nadleśnictwie Nowa Dęba
Evaluation of the natural and artificial regeneration of Scots pine Pinus sylvestris L. stands in the Forest District Nowa Deba
Autorzy:
Długosiewicz, J.
Zając, S.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/1291496.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
hodowla lasu
odnowienia lasu
drzewostany sosnowe
odnowienia naturalne
odnowienia sztuczne
sosna zwyczajna
Pinus sylvestris
jakosc hodowlana
wzrost roslin
zywotnosc drzew
zdrowotnosc drzew
zageszczenie drzew
stopien pokrycia terenu
Opis:
The main purpose of this article was to highlight the potential for enhancing positive silvicultural effects and their dependency on the management method in Scots pine Pinus sylvestris L. stands. We therefore assessed the impact of natural and artificial regeneration on vitality and health, compaction, surface coverage and seedlings height. Another important goal was to assess the severity of damage in the selected forest sites. A comparative analysis was carried out based on results from field work conducted in the autumn 2010 in the Forest District Nowa Dęba. As part of this field work, also the breeding quality of the analyzed pine renewals was assessed. The obtained results indicate that natural regeneration of Scots pine under the conditions of a fresh coniferous forest as well as a fresh mixed coniferous forest is the most reasonable management practice. In wet mixed coniferous forests however, the naturally regenerating Scots pine seedlings are of lower silvicultural quality and growth parameter values compared to those in artificially regenerated stands. In fresh mixed broadleaved forests, naturally regenerated Scot pine trees showed slightly lower silvicultural quality and vitality than artificially regenerated trees. Our results indicate furthermore that there are indeed conditions under which the restoration of Scots pine in the Nowa Dęba Forest District using natural regeneration is preferable. We also found that the employed method of renewing has a significant impact on pine growth parameters in the moist mixed coniferous forest habitat. Naturally renewing pines are characterized by a lower overall viability, but at the same time natural regeneration provides a larger number of individuals with the best viability (1st vitality class), which can be a valuable selection basis for trees used in breeding.
Źródło:
Leśne Prace Badawcze; 2019, 80, 2
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody standaryzacji kosztów jednostkowych wybranych prac z zakresu hodowli lasu
Methods of standardisation of the unit costs of selected silvicultural works
Autorzy:
Kocel, J.
Wysocka-Fijorek, E.
Mionskowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/979356.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
hodowla lasu
prace hodowlane
koszty pracy
koszty jednostkowe
standaryzacja
leśnictwo
costs standardization
costs of silviculture
financial system of state forests
Opis:
The article presents methods for standardizing the costs of the silvicultural treatments (renewals and afforestation, corrections and additions, tending). Our scope included the statistical determination of factors shaping the costs of selected works, elaborating methods of their standardization, assessment of these methods suitability for determining standard unit costs of selected silvicultural works, and selection of the method for application in the financial system of the State Forests. The data were obtained from the database of the State Forests Information System for all forest districts in the country. Information about the social background of forest districts was obtained from the Local Data Bank. Initially we analysed factors shaping the costs of forest works. The first developed method was based on the grouping of forest districts with similar natural conditions described by the forest habitat types, which are the main factor shaping the costs of silviculture. The other method consisted of technological models for the field−works using the time−consumption catalogues used in the State Forests. Each of the developed methods is characterized by specific disadvantages and advantages. The first method determines the standard costs on the basis of historical data. The use of data incurred by forest districts in previous years has a major disadvantage, as they may contain results of poor efficacy from previous periods. However, the creation of groups of forest districts with similar natural conditions by organizational units from different regions of the country with different economic and social conditions, as various regional directorates of the State Forests pursuing a specific policy on the amount of rates for services performed by forest companies limits the disadvantages. The main advantage of the other method is that it is not based on the historical data. This method also gives the forest district management the opportunity to compare rates for services provided by forestry companies with the economic environment of the forest district, thanks to the use of the average monthly gross wages in administration districts. The disadvantage of this method is the lack of source data (time−consumption) from forest districts planning costs in natural units and applying long−term agreements with forestry services companies. Full assessment of the proposed methods will be possible after comparison of standardized costs calculated by different methods with actual values.
Źródło:
Sylwan; 2019, 163, 11; 892-902
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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