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Tytuł:
Indukcyjna metodyka prognozy rozwoju zasobów drzewnych
Inductive methodology of the forecast of wood resources development
Autorzy:
Wysocka-Fijorek, E.
Zajączkowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/979067.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
harvest growth increment
volume
area
resource modelling
Opis:
For effective forest management, comprehensive information on the condition and structure of wood resources is needed, as well as a forecast of their development and the possibility of harvest cutting in the long term. The paper objectives is to present a methodology of predicting the development of wood resources and the possibility of main cutting based on the current state of the forest. Presented methodology of the forecast preparation is based on the inductive type of prediction in which future directions of changes are predicted based on past events. Such forecast finds expression of conscious human activity in actively shaping the future, while it does not seek to determine the target state of the forest, but it is assumed that shaping the state of the forest can be subject to constant evolution. The forecast of the development of wood resources in individual forest areas may be based on the data contained in the forest management plans, and these data may be compiled either for individual forest districts (or other forest units), or for groups of forest districts (e.g. for regional directorates of the State Forests, or the State Forests in total). The initial data, necessary to make forecasts, are primarily: a tabular comparison of the stands area and volume in age classes and subclasses; projected afforestation area; intensity indicators of final cutting and intermediate felling determining the harvesting intensity in relation to the size of wood resources in individual classes and age subclasses; and the expected volume of current volume increment over the adopted forecast periods. Additional data contains: approximate share of clear− and complex cutting in final felling; adopted distribution according to the age classes of the young generation after removal cuts in stands kept in complex cutting; average length of the regeneration period; and average age of stands in regeneration classes – used to determine the average age in forest areas for which a forecast is made. Presented methodology makes it possible to determine and analyse anticipated changes in area and volume in age classes, average age and average stand volume as well as possibilities of final and intermediate cutting, and the harvesting intensity in relation to the size of wood resources and the current volume increase in the adopted forecast periods.
Źródło:
Sylwan; 2020, 164, 04; 267-279
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ekonomiczna efektywność naturalnego i sztucznego odnowienia drzewostanów sosnowych w Nadleśnictwie Nowa Dęba
Economic effectiveness of natural and artificial regeneration of Scots pine stands in the Nowa Deba Forest District
Autorzy:
Długosiewicz, J.
Zając, S.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/985715.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
drzewostany sosnowe
odnowienia lasu
odnowienia naturalne
odnowienia sztuczne
efektywnosc ekonomiczna
ocena ekonomiczna
Nadlesnictwo Nowa Deba
scots pine
natural regeneration
artificial regeneration
costs
effectiveness assessment
Opis:
A prerequisite for effective forest management is a detailed economic analysis of given management determinants. In the forest district’s expenditures, next to the wood harvesting and skidding, the cost of silvicultural activities constitute a considerable share. The choice of forest management methods, including those for forest regeneration has a significant effect on the costs incurred for silvicultural activities as well as on the quality of emerging new generation. The aim of the study was to assess the economic effectiveness of Scots pine stand management using natural and artificial regeneration. The research determined the size and structure of expenditures incurred for the establishment and maintenance of crops. We also carried out the analysis and assessment of the effects of the selected regeneration method on forest management economic efficiency. The economic analysis included the comparison of the costs of establishment and maintenance of stands with artificially regenerated Scots pine trees with the costs of analogous activities carried out within the research plots with Scots pine from self−seeding. The studies were carried out on 4 types of forest sites, i.e.: fresh coniferous, fresh mixed coniferous, wet mixed coniferous and fresh mixed deciduous. The analyses were carried out using the cash flow method – the stream of expenditure incurred for stand management. The total costs of artificial stand regeneration and maintenance were on average higher by 1,443.24 PLN/ha of plantation as compared to naturally regenerated stands. Lower costs of tending and corrections performed in artificially regenerated Scots pine stands did not compensate for high expenditure incurred on regeneration activities, and as a result the total cost amounted to an average of 5,002.94 PLN/ha, whereas in the case of natural regeneration the total cost was 3,559.70 PLN/ha. In the analysed methods, the site conditions were of great importance to the amount of expenditures incurred for stand regeneration and maintenance. The economic viability of forest natural regeneration was confirmed for fresh coniferous, fresh mixed coniferous and wet mixed coniferous habitat types. In fresh mixed deciduous site, high costs of tending treatments and corrections had a major effect on the low economic result of the natural method of forest regeneration. The presented results on the effectiveness of management of Scots pine stands or those with the predominance of Scots pine using natural and artificial regeneration can be an important factor in taking appropriate silvicultural decisions, based on the assessment and knowledge of determinants affecting profitability of undertakings.
Źródło:
Sylwan; 2019, 163, 05; 373-384
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Language awareness of non-native speakers of Polish
Autorzy:
Wysocka, Marzena S.
Powiązania:
https://bibliotekanauki.pl/articles/2083502.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
language awareness
language difficulty
language material
świadomość językowa
trudności językowe
materiał językowy
Opis:
The article investigates the level of language awareness manifested by the advanced learners of Polish as a FL (146 students of the Polish Language Course attending the School of Polish Language and Culture at the University of Silesia in Katowice, Poland). The exact focus is on learning outcomes (areas of language progress and regress), and perception of the Polish language material learnt (including grammar, vocabulary and phonology), an emphasis being put on most problematic issues. Having presented learners’ opinions and reflections on language, implications for teachers including teaching materials raising language awareness are offered.
Artykuł bada poziom świadomości językowej wśród zaawansowanych użytkowników języka polskiego jako obcego (146 uczestników kursu języka polskiego prowadzonego przez Szkołę Języka i Kultury Polskiej Uniwersytetu Śląskiego). Badana świadomość językowa odnosi się do rezultatów w nauce i obserwowanych zmian w języku respondentów oraz percepcji materiału językowego (gramatyki, słownictwa i elementów fonologii) pokazując przede wszystkim trudności językowe, z jakimi borykają się badani. Po ukazaniu najbardziej problematycznych kwestii, autorka przedstawia propozycję ćwiczeń podnoszącą świadomość językową osób uczących się języka polskiego.
Źródło:
Kwartalnik Neofilologiczny; 2019, 3; 518-532
0023-5911
Pojawia się w:
Kwartalnik Neofilologiczny
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:
Poetry in Teaching Grammar to the Advanced Users of Polish as a FL
Autorzy:
Wysocka, Marzena S.
Powiązania:
https://bibliotekanauki.pl/articles/783236.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
poetry
poems
grammar
grammar problems
Opis:
The article offers an insight into problematic issues the advanced learners of Polish as a FL cope with in terms of grammar in speaking and writing. It opens with a brief insight into teaching literature, poetry including, in a FL classroom. What follows includes types of poems and their potential to be used in the teaching context, mainly when teaching grammar. Having presented  the scope of linguistic problems experienced by the users of Polish as a FL, the type and frequency of grammatical problems are discussed. Polish grammar-based issues the foreigners struggle with constituted the main area of the research conducted among 146 students of the Polish Language Course attending the School of Polish Language and Culture at the University of Silesia in Katowice, Poland. The findings come from oral and written assignments produced by the sample in question, and, most frequently, reflect grammatical mistakes that are persistent and difficult to eliminate from the linguistic repertoire. Given that,  ways of using poetry as a means of a “grammar refresher” are suggested. These include a few examples of activities based on poems to be used  when trying to overcome particular linguistic difficulties, together with implications for teachers raising students’ language awareness and developing reflection on language per se.
Źródło:
Theory and Practice of Second Language Acquisition; 2019, 5, 1; 55-72
2450-5455
2451-2125
Pojawia się w:
Theory and Practice of Second Language Acquisition
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie sposobów określania składu gatunkowego drzewostanów obrębu leśnego
Comparison of the methods of determining the tree species composition of stands in a forest district
Autorzy:
Bruchwald, A.
Miścicki, S.
Dmyterko, E.
Stereńczak, K.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/985705.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
sklad gatunkowy
struktura gatunkowa
metody badan
analiza porownawcza
obreby lesne
basal area
cover
diversity
sample plot
survey
volume
Opis:
In Polish forest management planning, the species composition of stands in a forest district is established by adding up the volumes of tree species from individual forest stands. These volumes are calculated according to the estimated share of species cover and the estimated volume of the entire forest stand. The species structure of stands in a forest district, established on the basis of such a method, may be different than that obtained from sample plots. The aim of the study was to compare three ways of determining the tree species structure of stands in a forest district. In Method 1, the species composition was estimated on the basis of the volume of trees measured on sample plots as part of a periodic forest inventory based on stratified sampling. The same data were used in Method 2, but the share of species was calculated on the basis of the basal area. In Method 3, the species structure was estimated according to the volume of trees estimated in each forest stand based on the cover of a given species. The empirical material was collected in 53 forest districts. In method 1 and 2, data from an average of 740 sample plots within the forest district were used. In Method 3, data from the forest stand descriptions contained in the database of the State Forests Information System were used. For each forest district, species composition was calculated, including 6 tree species and 8 groups of tree species. For all forest districts, the average shares of individual species and groups of species differed, depending on the applied method (tab. 1). In case of methods 1 and 2, the biggest difference was found for pine – the most numerous species – but it was also big for less numerous ones: birch and oak (tab. 2). In case of methods 1 and 3, the biggest difference in share was also found for pine (tab. 3). The greater the species diversity of a forest district (determined according to Simpson’s index of diversity), the greater was the average difference in the estimated share of an individual species (figs. 1 and 2). The method of determining the species structure in a forest district used in forest management practice nowadays was considered insufficient. It was proposed to establish it in larger units (subclass, age class, forest district) only according to the volume of trees measured on the sample plots (without rounding and ‘switching’ of species), using the stratified sampling method.
Źródło:
Sylwan; 2019, 163, 05; 365-372
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recenzja książki pod redakcją Johna Stewarta pt. Mosty zamiast murów. Podręcznik komunikacji interpersonalnej. Warszawa: Wydawnictwo Naukowe PWN, 2010, str. 616.
Autorzy:
Wysocka, Marzena S.
Powiązania:
https://bibliotekanauki.pl/articles/1037586.pdf
Data publikacji:
2019-09-24
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu. Collegium Novum. Polskie Towarzystwo Neofilologiczne
Źródło:
Neofilolog; 2012, 38/2; 263-269
1429-2173
Pojawia się w:
Neofilolog
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of Grażyna Kiliańska-Przybyło (2017). The Anatomy of Intercultural Encounters. A Sociolinguistic Cross-Cultural Study
Autorzy:
Wysocka, Marzena S.
Powiązania:
https://bibliotekanauki.pl/articles/443007.pdf
Data publikacji:
2019-12-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu. Collegium Novum. Polskie Towarzystwo Neofilologiczne
Tematy:
interculturalism
intercultural encounters
intercultural dialogue
English as a foreign language
międzykulturowość
spotkania interkulturowe
dialog interkulturowy
język angielski jako obcy
Źródło:
Neofilolog; 2019, 53/2; 347-349
1429-2173
Pojawia się w:
Neofilolog
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura sortymentowa pozyskiwanego drewna w podklasach wieku w wybranych rodzajach rębni w drzewostanach sosnowych
Assortment structure of harvested wood in age subclasses in selected cutting systems in Scots pine stands
Autorzy:
Parzych, S.
Mandziuk, A.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/980187.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
drzewostany sosnowe
rebnie
sosna zwyczajna
Pinus sylvestris
pozyskiwanie drewna
struktura sortymentowa
management system
cutting system
assortment of wood
scots pine
Opis:
Scots pine is the dominant forest tree species in Poland covering 58.0% of the forest area and constituting 61.1% of timber resources. Theoretically, all types of cuttings can be used in pine stands, but the purpose of the paper is to analyse the share of the main groups of assortments obtained from such stands with the use of: clear, group and gradual cuttings. It should be remembered that all types and forms of cutting are ideological, and the choice of a particular system should be determined by the silviculture goal. We used the data from the years 2012−2014 to conduct the research. The analysis covered Scots pine stands from all forest districts of the State Forests National Forest Holding, in which this species had a share of 80 to 100%. We analysed clear (I), group (III) and gradual (IV) cutting systems. Over 3.1 million hectares of mono−species pine stands was analysed. Numerical data was obtained from the database of the State Forests Information System. The studies took into account the assortments that actually occurred in a given subclass of age, divided into the type of cuttings, aggregated into three categories: small, medium and large−sized timber. In Poland, in mono−species Scots pine stands, mainly I and III cutting systems (about 97% of analysed stands) were used, the remaining types of treatments were sporadic. The largest share of harvest was characterized by the pulpwood assortment in harvesting I and III and the sawmill wood in the IV cutting system. With age, a decrease in the proportion of small−sized assortments and a gradual increase in the share of large−sized assortments was observed, while in the case of medium−sized assortments, the culmination of the share occurs at the age of 35−45 years, in all the analysed cutting systems. The course of the fraction of sub−classes in the case of large and medium−sized assortments in I and III cutting systems was similar.
Źródło:
Sylwan; 2019, 163, 09; 707-715
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methane and Nitrous Oxide Emissions from Agriculture on a Regional Scale
Autorzy:
Wysocka-Czubaszek, A.
Czubaszek, R.
Roj-Rojewski, S.
Banaszuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/124407.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
methane emissions
nitrous oxide emissions
agriculture
Opis:
Nowadays, agriculture has to meet the growing food demand together with high requirements of environmental protection, especially regarding the climate change. The greenhouse gas emissions differ not only on a global, but also on a regional scale, and mitigation strategies are effective when they are adapted properly. Therefore, the aim of this paper is to present the results of methane (CH4) and nitrous oxide (N2O) emissions inventory on a regional level in Poland in years 1999-2015. The CH4 and N2O emissions were calculated according to the methodology used by the National Centre for Emissions Management (NCEM) for national inventory for United Nations Framework Convention on Climate Change and Kyoto Protocol. The data were taken from Central Statistical Office of Poland. The CH4 emissions in all studied years varied strongly between voivodeships and ranged from 5.6-7.5 Gg y-1 in the Lubuskie Voivodeship to 84.8-104.3 Gg y-1 in the Mazowieckie Voivodeship. While in most voivodeships the CH4 emissions dropped down, in Podlaskie, Warmińsko-Mazurskie, and Wielkopolskie voivodeships, the emissions of this gas increased significantly as a consequence of the development of dairy and meat production. In 1999, the highest N2O fluxes were calculated for the Wielkopolskie (5.7 Gg y-1), Mazowieckie (4.8 Gg y-1) Kujawsko-Pomorskie (3.5 Gg y-1) and Lubelskie (3.3 Gg y-1) voivodeships, while in 2015, the highest nitrous oxide emissions were calculated for the Wielkopolskie (7.3 Gg y-1), Mazowieckie (5.5 Gg y-1), Kujawsko-Pomorskie (4.1 Gg y-1) and Podlaskie (4.1 Gg y-1) voivodeships. In the studied period, the contribution of N2O emissions from crop production increased in almost all voivodeships except the Podlaskie, Lubuskie and Warmińsko-Mazurskie regions. The growth in emissions from mineral fertilization and crop residue incorporation, together with the increase of emission from the animal sector in some regions of Poland, resulted in the higher national emission of nitrous oxide in the period of 1999 to 2015. Although there is a range of GHG reduction possibilities, the mitigation should be adapted with caution, on the basis of precisely calculated GHG emissions. The best management practices, if followed carefully, may reduce the environmental burden of the agricultural production and enhance its profitability.
Źródło:
Journal of Ecological Engineering; 2018, 19, 3; 206-217
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of selenium and vitamin E supplementation on cytological assessment of red blood cell line of bone marrow in fallow deer kept in captivity
Autorzy:
Snarska, A.
Wysocka, D.
Rytel, L.
Żarczyńska, K.
Sobiech, P.
Gonkowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/2087707.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bone marrow
hematopoiesis
erythroblast
selenium
vitamin E
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 3; 431-436
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ zasobności drzewostanów sosnowych na ustalanie ekonomicznego wieku dojrzałości rębnej
Impact of Scots pine stand growing stock on determining the optimal economic rotation age
Autorzy:
Parzych, S.
Mandziuk, A.
Wysocka-Fijorek, E.
Powiązania:
https://bibliotekanauki.pl/articles/986601.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
drzewostany sosnowe
zasobnosc drzewostanu
wiek dojrzalosci rebnej
optymalizacja
klasy bonitacji
timber price
rotation age
optimization methods timber production
site class index
Opis:
The stand volume is one of the forest inventory characteristic determined during the field work aimed at planning operations in the tree stands. Determining the optimal rotation age is an important decision issue in the forest management. In turn, the key factor that determines the choice of the method for determining the rotation age of the tree stands is the production target. Depending on the rotation age, a specific structure of quantity, quality and dimensions of particular timber assortments is obtained. It seems reasonable that the economic rotation age is one of the main criteria taken into account when planning forest management in tree stands or forest district. The aim of the paper is to assess the impact of growing stock on determining the rotation age of Scots pine stands in particular site index classes. We compared the tabular (i.e. based on data from yield tables) and real (i.e. based on data from the Information System of the State Forests) volume of pine stands. The analysis was based on the forest description data, the amount of the harvested timber and economic data: timber price as well as the costs of harvesting, skidding and production of assortments. The optimal economic rotation age was determined as the point of intersection of the curve describing the average and current increment of the value of Scots pine stands. The research showed that the rotation age of stands is related to the site index class and whether real or tabular results are analysed. The optimal rotation age for Scots pine tree stands is lower in the real data model from 10 to 23 years from that calculated on the basis of tabular data.
Źródło:
Sylwan; 2018, 162, 08; 671-678
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of simvastatin on red blood cell linein porcine bone marrow
Autorzy:
Sobiech, P.
Żarczyńska, K.
Snarska, A.
Rytel, L.
Wysocka, D.
Gonkowski, S.
Pomianowski, A.
Babińska, I.
Otrocka-Domagała, I.
Powiązania:
https://bibliotekanauki.pl/articles/2087869.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
simvastatin
proerythroblast
blood
erythroblast
pig
Źródło:
Polish Journal of Veterinary Sciences; 2017, 4; 811-814
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja wieku dojrzałości rębnej drzewostanów z punktu widzenia wiązania węgla
Optimizing the stand rotation age from the point of view of carbon sequestration
Autorzy:
Wysocka-Fijorek, E.
Zając, S.
Powiązania:
https://bibliotekanauki.pl/articles/988959.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
drzewostany sosnowe
drzewostany bukowe
dojrzalosc rebna
wiek dojrzalosci rebnej
optymalizacja
wiazanie wegla
wzory empiryczne
wspolczynniki przeliczeniowe
optimization of the rotation age
carbon dioxide accumulation
timber production
Opis:
The selection of the rotation time of a stand (from planting to final felling), i.e. the age at which stand reaches harvest maturity, is a key decision in forest management due to, inter alia, the amount and value of carbon stored in the forest. In this context, the basis for the economic optimisation of the rotation age of forests is to define the goal of forest production and desirable state of forests ensuring the achievement of the adopted aim. Therefore, the choice of the most suitable optimal moment of completing a production cycle and starting the subsequent one is very important in forest management. The aim of the performed analysis is to verify the empirical equations and conversion factors as well as to assess their suitability for determining the volume and value of standing timber and accumulation of carbon in the aboveground woody biomass. The verified equations will be used for modelling the optimal rotation age of forests due to the maximization of the rate of carbon accumulation in the aboveground woody biomass. The input data for the verification of equations and conversion factors were grouped according to the dominant species, 10−years age subclass and site index class. Four methodological approaches were used to analyse and estimate the amount of carbon accumulated in the aboveground woody biomass. With the assumption of a continuous use of forest land for timber production, the generated revenues will be same at the same level of costs in the subsequent production cycles. Analysing the results of the optimization of the age of felling maturity it should be noticed that these are the averaged values relating to the State Forests. They do not take into account local differences in the price of raw wood and production costs including the specific characteristics of individual trees or stands. The accuracy (quality) of calculating the average and current increment of stands and, in consequence, of the amount and value of the accumulated carbon is important for the effectiveness of the optimization of the amount of carbon accumulated in the aboveground woody biomass.
Źródło:
Sylwan; 2017, 161, 11; 883-891
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic optimization of the rotation age of stands
Autorzy:
Plotkowski, L.
Zajac, S.
Wysocka-Fijorek, E.
Gruchala, A.
Piekutin, J.
Parzych, S.
Powiązania:
https://bibliotekanauki.pl/articles/38593.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2016, 58, 4
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 55

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