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Wyszukujesz frazę "Zastocki, D." wg kryterium: Autor


Wyświetlanie 1-12 z 12
Tytuł:
Wpływ stosowanych technologii pozyskiwania drewna przez Zakłady Usług Leśnych na obecną i przyszłą jakość techniczną sosnowych drzewostanów przedrębnych
The effect of harvesting systems used by Forest Services Companies on the present and future technical quality of premature pine stands
Autorzy:
Zastocki, D
Powiązania:
https://bibliotekanauki.pl/articles/1026391.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
drzewostany
metody pozyskiwania drewna
uzytkowanie lasu
Zaklady Uslug Lesnych
lesnictwo
jakosc
drzewostany przedrebne
pozyskiwanie drewna
forest services companies
stand damage
thinnings
kraft class
harvesting system
poland
Opis:
The aim of the paper is to determine the degree of damage of trees in a stand in the Kraft classes and diameters at breast height of trees in the damaged and undamaged stands depending on the harvesting system applied by Forest Services Companies. Field studies were carried out in the Polish lowlands in pine stands in the age classes II a, III a and IV a in the fresh forest habitat (Bśw) and mixed fresh forest habitat (BMśw). The prevailing species is pine (minimum 80%), and the assortment and tree−length methods are used for timber harvest. The thinning operations cause injuries to trees in the remaining stands and the scale of these injuries depends mainly on labour organisation.
Źródło:
Sylwan; 2003, 147, 03; 28-34
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ stosowanych przez Zakłady Usług Leśnych środków zrywkowych na uszkodzenia gleby i pozostających drzew w sosnowych drzewostanach przedrębnych
The effect of means used in timber extraction by Forest Services Companies on soil disturbance and tree damage in premature pine stands
Autorzy:
Zastocki, D.
Powiązania:
https://bibliotekanauki.pl/articles/973289.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
uszkodzenia drzew
maszyny zrywkowe
zrywka drewna
uszkodzenia gleby
trzebieże
leśnictwo
drzewostany przedrębne
Zakłady Usług Leśnych
Opis:
The objective of this study is to determine the degree of tree damage in accordance with the stand damage classification and to determine the soil compactness during timber extraction depending on the machines used by Forest Services Companies. The field studies were carried out in Polish lowlands in pine stands of age classes IIa, IIIa and IVa in the fresh coniferous forest (Bśw) and mixed fresh coniferous forest (BMś) habitats in which pine is the prevailing species (minimum 80%). Extraction operations in the thinned stands cause tree damage and soil disturbance. The extent of these disturbances depends on the type of machines and the method of timber harvesting.
Źródło:
Sylwan; 2003, 147, 04; 52-58
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Historia prywatnych firm leśnych w Polsce w latach 1924-2010
History of private forest companies in Poland in the years 1924-2010
Autorzy:
Zastocki, D.
Powiązania:
https://bibliotekanauki.pl/articles/989277.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uslugi lesne
prywatyzacja
firmy lesne
przedsiebiorstwa lesne
historia
forestry
privatisation of forest services
forest companies
Opis:
The beginnings of private forest services sector date back to the interwar period when harvesting operations and sawmill services were carried out by private companies leading to forest devastation. Adam Loret, the first director−general of the State Forests, started to build the structure of forest administration and hire manual workers. After the World War II, forestry in Poland operated in a centrally planned economic system, which precluded the functioning of the private forest services sector. The development of private forest companies in Poland began in the early 1990s. The employed free−market economy forced the State Forests to introduce many reforms and modifications to forest management, forest operations, as well as to the trading and sales of timber. All forest operations are being outsourced to private forest companies. Forest districts select bidders to perform the required forest operations according to the existing procedures, while ensuring the favourable conditions for the creation of new jobs. Forest companies face many difficulties to meet the growing demands laid down by the forest administration staff in tender specifications. The paper presents the current status of the private forest services sector, and describes the trends in the development of private forest companies providing services to the State Forests.
Źródło:
Sylwan; 2016, 160, 06; 466-474
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uszkodzenia drzew w górskich przedrębnych drzewostanach sosnowych
Tree damage in premature mountain Scots pine stands
Autorzy:
Zastocki, D.
Walczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/973750.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
uszkodzenia drzew
pozyskiwanie drewna
zrywka drewna
szlaki zrywkowe
leśnictwo
lasy górskie
drzewostany przedrębne
mountain forests
stand damage
private forest firms
Opis:
The aim of the study is to evaluate the selected methods and technological processes of wood harvesting used by Forest Service Enterprises and analyse the impact of the adopted solutions on the selected elements of the forest environment. The study is limited to a detailed analysis of the extent of damage to trees retained in stands caused by extraction during late thinning operations carried out under difficult mountain conditions. Analysed stands with pine as a dominant tree species (its percentage share exceeding 70%) aged 41−60 years and grew on the mountain forest habitat. Wood was harvested using the assortment method and skidded by the adapted farm tractors and specialized skidders, such as Kockums 812 and VFA.
Źródło:
Sylwan; 2011, 155, 09; 642-650
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane technologiczne i ekonomiczne aspekty balotowania pozostałości pozrębowych
Some technological and economic aspects of logging residues bundling
Autorzy:
Moskalik, T.
Sadowski, J.
Zastocki, D.
Powiązania:
https://bibliotekanauki.pl/articles/989650.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
biomasa lesna
pozostalosci zrebowe
balotowanie odpadow
aspekty technologiczne
aspekty ekonomiczne
produkcja balotow
koszty produkcji
wydajnosc pracy
bundling
slash
forest biomass
renewable energy
work and cost−efficiency
Opis:
As the access to the fossil fuels is limited, renewable energy sources have been especially intensively promoted in recent years, namely biomass. A comparatively large amount of biomass can be obtained from forests. This refers to round wood characterized by low technical quality, small−sized wood, and logging residues. Under Polish conditions, the potential amount of logging residues is estimated at 3−5 Mio. m³ per year, depending on different scenarios of their ulitization. Intense development of technologies for energy acquisition from the forest biomass has provided conditions facilitating the use of logging residues on an industrial scale. One of the possible solutions is bundling. In this process slash is compacted into cylindrical log−like units with diameter of ca. 65−75 cm and length of 2.5−3.0 m. The bundles can be forwarded to the roadside landing with standard forwarders and transported to the terminal or end−user with trucks utilized, first of all, by a round wood hauling. The John Deere slash bundler 1490D was the subject of the study. The basic unit of the bundling device was an eight−wheel forwarder. The study area was located in north−eastern Poland and comprised 10 selected plots. They represent coniferous stands, dominated by Scots pine with various fraction of Norway spruce and scattered birches. The aim of the paper was to estimate the basic technological and economic parameters of the bundling machine, working in clear cuts with two variants of logging residues concentration. In the first variant they were not especially accumulated, evenly distributed over the area. In the other one they were gathered into piles. The structure of a working day, work productivity rates, and the costs were determined. The bundler productivity rate depends largely on the extent the slash is prepared. When it is concentrated in piles, the machine does not have to travel over the entire work area to gather scattered material. In this case, the average productivity was 21.85 bundles/h. In the variant with scattered logging residues, work efficiency equaled 15.19 bundles/h. The hourly cost of the bundler use reached 289.42 PLN. The unit costs were at the level of 52.91 PLN/m³ (variant 1) and 38.54 PLN/m³ (variant 2).
Źródło:
Sylwan; 2016, 160, 01; 31-39
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena submisji jako formy sprzedaży drewna najwyższej jakości
Evaluation of submission as a form of sales of supreme quality timber
Autorzy:
Zastocki, D.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/989921.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
RDLP Krosno
drewno
sprzedaz
drewno cenne
submisje
rynek drzewny
submission
valuable timber
timber market
Opis:
Submission is a public announcement of an offer in order to acquire buyers who then present their offerings in writing, thus accepting the terms of sales and payment for the purchased timber. Submission sales of valuable timber is one of the forms of sales of timber adopted by the State Forests National Forest Holding. Increasing demand for supreme quality timber, collected in large amounts in one place and time resulted in establishment of submission sales of valuable timber in RDLP Krosno in year 2000. The interest in veneer wood grew rapidly amongst domestic and foreign companies, and at the same time the district of Podkarpacie was being promoted. This study presents the sales results and prices acquired for veneer wood, and the evaluation of submission as a form of sales of valuable timber in years 2000−2014. The presented specification, from the analysed period, justifies the implementation of this form of sales.
Źródło:
Sylwan; 2015, 159, 09; 707-713
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Submisja jako forma sprzedaży cennego surowca drzewnego
Submission sales as a form of valuable timber trade
Autorzy:
Zastocki, D.
Dobosz, L.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1006461.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
rynek drzewny
drewno
sprzedaz
submisje
RDLP Krosno
submission sales
assortment
valuable timber
timber market
Opis:
There are various forms of timber sales in the State Forests: auctions, tenders, submission, commission, negotiation, retail, and free−hand. In response to the steadily growing market demand for high quality wood, regular submission sales of valuable timber was launched in Krosno Regional Directorate of the State Forests (RDLP) in 2000. A favourable situation on the timber market at that time contributed to the sale of all offered timber. Since then, an increasing interest in veneer wood, especially of beech, has been observed among companies both in Poland and abroad. The paper presents the results and evaluation of submission sales as a form of valuable timber trade in the years 2000−2009. It also provides an analysis of the revenues obtained from the submission sales compared to the total sale of timber in the territory of Krosno RDLP in individual years. The presented specification from the last decade confirms the right choice of this form of sale in the Krosno RDLP. Thanks to the submission sales, the timber from the Podkarpacie region is highly appreciated in the European and world markets.
Źródło:
Sylwan; 2012, 156, 04; 305-314
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyniki submisji drewna cennego na przykładzie RDLP Krosno
Submission sale of valuable wood on the example of the Krosno Regional Directorate of the State Forests
Autorzy:
Zastocki, D.
Dobosz, L.
Moskalik, T.
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/972767.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drewno
sprzedaz
submisje
RDLP Krosno
ceny
rynek drzewny
analiza cen
drewno cenne
drewno bukowe
drewno brzozowe
drewno czeresniowe
drewno debowe
drewno jesionowe
drewno jaworowe
drewno klonowe
drewno lipowe
drewno modrzewiowe
drewno olszowe
drewno orzecha
drewno osiki
drewno sosnowe
drewno wiazowe
submission
assortment
valuable wood
timber market
Polska
Opis:
Sale of valuable wood assortments in the State Forests takes place in submissions and other forms of timber sale. In response to the growing demand for a specific timber, the forest administration of the Krosno Regional Directorate of the State Forests (RDSF) offers customers the ever−increasing amount of high−quality wood for sale in the submission. This has resulted in an increased interest in purchases of large amounts of wood in one place to be processed by veneer wood companies, and at the same time contributed to the promotion of the Podkarpacie region.The paper presents sale results and prices of veneer wood obtained in submissions and in other forms of sale in the territory of the Krosno RDSF in the years 2000−2009. A detailed analysis of the value of sales of valuable wood in submissions and in other forms of sale in individual years allowed to draw conclusions confirming the correctness of the decisions made in choosing such forms of timber sale.
Źródło:
Sylwan; 2012, 156, 07; 483-493
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pozyskanie drewna w nadleśnictwach Puszczy Białowieskiej w latach 2008-2015
Harvest of timber in forest districts of the Bialowieza Forest in 2008-2015
Autorzy:
Zastocki, D.
Lachowicz, H.
Sadowski, J.
Moskalik, T.
Nietupska, M.
Powiązania:
https://bibliotekanauki.pl/articles/985925.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
gospodarka lesna
nadlesnictwa
pozyskiwanie drewna
sortymenty drewna
lata 2008-2015
białowieża forest
cutting categories
assortments
nature−valuable areas
Opis:
The paper presents a multifaceted structure of timber harvest in 2008−2015 in the Białowieża, Browsk and Hajnówka forest districts located in the Białowieża Forest. The object of the research, including the Białowieża National Park being a remnant of the primeval forests, is considered one of the most valuable forest areas of natural origin in Europe. The studies were made on the basis of the data from the reports created by the State Forests Information System and forest management plans, as well as the nature conservation programs of the surveyed forest districts. In the analysed period, a total of 665,032.5 m3 of merchantable timber was harvested in the analysed area. The highest volume of merchantable timber was harvested in the Browsk Forest District – 305,934 m3 (46%), then in the Hajnówka Forest District – 219,300 m3 (33%), with the lowest volume harvested in the Białowieża Forest District 139,788 m3 (21%). Among the individual assortment groups, the medium−sized timber was the most common and its harvested volume amounted to 413,579 m3, while the harvested volume of large−sized timber amounted to 251,454 m3. The lowest harvested volume concerned the small−sized timber and amounted to 21,652 m3. In the analysed period, softwood had the largest share in timber harvest and amounted to 443,469 m3. Hardwood was obtained in the volume of 243,215 m3. According to the cutting category, the timber harvest structure was as follows: the highest volume was harvested in pre− commercial thinning 382,495 m3 (54%), that from incidental felling amounted to 251,003 m3 (38%), while the lowest volume of harvested timber was from final cutting – 53,186 m3 (8%). Forest districts located in the Białowieża Forest encounter many difficulties affecting timber harvest. The main reason for this lies in the numerous restrictions imposed on the management of areas covered by various forms of nature protection, including the exclusion of some habitats, or stands of 100 years of age and older from management, which significantly affects the yield. The lack of a determined rotation age for stands in the Białowieża Forest also has a significant impact on timber harvest.
Źródło:
Sylwan; 2018, 162, 11; 941-948
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sprzedaż drewna w nadleśnictwach Puszczy Białowieskiej w latach 2008-2015
Sale of timber in forest districts of the Bialowieza Forest in 2008-2015
Autorzy:
Lachowicz, H.
Zastocki, D.
Sadowski, J.
Moskalik, T.
Nietupska, M.
Powiązania:
https://bibliotekanauki.pl/articles/985928.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
gospodarka lesna
nadlesnictwa
Nadlesnictwo Bialowieza
Nadlesnictwo Browsk
Nadlesnictwo Hajnowka
surowce drzewne
drewno
sortymenty drewna
sprzedaz drewna
bialowieża forest
timber sales
assortment and species structure
Opis:
The structure of timber sales in forest districts of the Białowieża Forest in the years 2008−2015 is presented. The Białowieża Forest is one of the most valuable natural areas in Europe. The data from the reports generated by the State Forests Information System of the Hajnówka, Browsk and Białowieża forest districts were used for the research. The information contained in the forest management plans and nature conservation programs of the surveyed forest districts was also used. The volume of the sold merchantable timber in the Białowieża Forest amounted to 669,072 m3, of which 63.43% was softwood and 36.57% hardwood. Among the softwood assortment, sales of the large−sized timber amounted to 44.42%, while of the medium−sized timber to 55.58%. For the large−sized hardwood, the share of sales amounted to 30.66%, while for the medium−sized hardwood to 69.34%. The small−sized timber was sold at 22,389 m3, with the share of hardwood assortments being 82%, and of softwood 18%. A small share in the sales of small−sized timber is caused by the lack of FSC certification by forest districts, which excludes large industrial companies that buy predominantly the medium−sized coniferous timber assortments. The average price obtained from the sale of timber in the the Białowieża Forest in the analysed period was 134.7 PLN/m3. At a price higher than the average, wood was sold in the Białowieża and Hajnówka forest districts, while in the Browsk Forest District the timber was sold at a price lower than the average. The total volume of merchantable timber harvested in the forest districts of the Białowieża Forest in the analysed years, including the small−sized timber, amounted to 686,684 m3, with 691,461 m3 of timber being sold. The volume of the merchantable timber sold at that time was 669,072 m3, which constituted only 0.24% of the total timber sold at the State Forests in Poland.
Źródło:
Sylwan; 2018, 162, 11; 949-954
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Produkcja węgla drzewnego na przykładzie RDLP Krosno
Charcoal production on the example of the Krosno RDSF
Autorzy:
Zastocki, D.
Sadowski, J.
Moskalik, T.
Oktaba, J.
Janik, M.
Powiązania:
https://bibliotekanauki.pl/articles/985977.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
RDLP Krosno
uboczne uzytkowanie lasu
wegiel drzewny
weglarstwo lesne
nadlesnictwa
wielkosc produkcji
charcoal burning
bieszczady mountains
adjustable retorts
efficiency
Opis:
The burning of wood in the Bieszczady Mountains (SE Poland) began to play a significant role with first settlements in this region in the 17th and 18th centuries. Large beech wood resources were the main reason for such a high charcoal production in this part of Poland. The role of charcoal production in the Bieszczady region is reflected in the names of villages such as Smolnik (Tar), Potasznia (Potash) and Mielerzysko (Charcoal Pile). The aim of this paper is to present the scope and volume of charcoal production in forest districts located in the territory of the Krosno Regional Directorate of State Forests (RDSF) in 2008−2013. It also identifies the number of companies dealing with charcoal production as well as the efficiency and amount of burned charcoal calculated on the basis of the quantity of purchased wood. The verification of the information about the locations of charcoal burning concerned all 26 forest districts of the Krosno RDSF. Charcoal burning bases were identified in the following forest districts: Baligród, Bircza, Cisna, Dukla, Komancza, Lutowiska, Rymanów and Stuposiany. Most bases were located in the territory of the Lutowiska ranging from 5 to 7 in the analysed period. Slight changes in the number of charcoal burning bases were found in the Cisna forest district, where initially there were 5 companies involved in charcoal production, while in 2009−2010 their number increased to 6 entities. In the Stuposiany forest district 5 bases of charcoal burning run by two companies were identified, and in the Baligród and Komańcza forest districts four charcoal burning bases operated in each of them. In the Dukla forest district, two companies dealing with charcoal production were identified in 2008−2009, one in 2010−2012, while in 2013 no such entity was found. In the Bircza and Rymanów forest districts, only one charcoal burning base operated at that time. In 2008−2013, the number of bases located in the research area slightly decreased from 29 to 25, and the amount of produced charcoal decreased from 7372.4 to 3855.6 tonnes sold mainly in Bieszczady and part of the Lublin region. A significant drop in production was not the result of a decrease in demand; it was rather associated, inter alia, with the import of cheaper charcoal from abroad.
Źródło:
Sylwan; 2018, 162, 10; 837-843
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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