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Wyświetlanie 1-11 z 11
Tytuł:
Wpływ klęsk żywiołowych na rynek drzewny
The effect of natural disasters on the timber market
Autorzy:
Sikora, A.T.
Powiązania:
https://bibliotekanauki.pl/articles/1293666.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
lasy
kleski zywiolowe
skutki ekonomiczne
rynek drzewny
surowce drzewne
sortymenty drewna
odbiorcy
timber market
timber assortments
wood buyers
natural disasters
Opis:
The aim of the study was to determine the impact an increased wood supply from the Beskid forests after natural disasters on the timber economy of the Węgierska Górka Forest District and its surroundings in the years 2004–2010. The analysis was based on the wood raw material sales recorded in the database of the State Forestry Information System (SILP). Information on the buyers’ location and their main use for the raw material were obtained through the Central Statistical Office. Furthermore, wood material buyers were classified according to the Polish Classification of Activities (PCA) based on the year 2007, using only a subjective analysis designed for enterprises and other economic units in the national economy. Changes in sales of wood material to the selected buyer groups were investigated using statistical analyses of linear trends. A Pearson’s correlation analysis verified the relationships between the buyer groups and the supply of timber assortments by the Węgierska Górka Forest District. Other studies have also shown that an increased supply of raw material in the context of natural disasters affects the types of wood buyers and their location. In addition, they have shown an increase in interest towards the purchase of raw materials among buyers engaged in the wholesale trade of wood and other non-wood producers which in turn decrease the share purchased by sawmills.
Źródło:
Leśne Prace Badawcze; 2017, 78, 4
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ceny surowca drzewnego w warunkach klęsk żywiołowych w Nadleśnictwie Węgierska Górka
Timber prices after natural disasters in the Forest District of Wegierska Gorka
Autorzy:
Sikora, A.T.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/1317481.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Nadlesnictwo Wegierska Gorka
kleski zywiolowe
pozyskiwanie drewna
surowce drzewne
drewno
sortymenty drewna
ceny jednostkowe
rynek drzewny
natural disasters
timber assortments
unit prices
the timber market
Opis:
The aim of the study was to determine the impact of increased timber logging after natural disasters on timber assortments, unit prices, as well as average prices of timber spruce and total timber. The net sales prices of the years 2004-2010, available from the database of the State Forests Information System (SFIS) for the Forest District of Węgierska Górka, were analysed and compared to the prices of selected forest districts within the Regional Directorate of State Forests in Cracow (RDSF). The forest districts were classified based on the volume of logged timber leading to a separation into two groups of two and six forest districts. Moreover, we tested for significance in the linear trends of relevant characteristics and determined confidence intervals. Furthermore, we calculated the rate of growth (decrease) of the unit prices. Our studies show a decrease in price of only some of the timber assortments despite a significantly increased supply. Price declines were observed for the average prices of timber spruce and total timber due to their lowered quality. The price of timber assortments was mainly determined by effects of macroeconomic factors.
Źródło:
Leśne Prace Badawcze; 2014, 75, 2; 201-212
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koszty działalności podstawowej w warunkach klęsk żywiołowych w Nadleśnictwie Węgierska Górka
The main costs of natural disasters in the Forest District of Wegierska Gorka
Autorzy:
Sikora, A.T.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/1312782.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
nadlesnictwa
kleski zywiolowe
skutki ekonomiczne
gospodarka lesna
dzialalnosc podstawowa
koszty jednostkowe
analiza kosztow
Nadlesnictwo Wegierska Gorka
natural disasters
the core activity of Forest District
unit costs
the synthetic index of costs
Opis:
The aim of the study was to determine the impact of increased forest management due to natural disasters on particular core unit costs. We analysed the direct costs for the Forest District of Wêgierska Górka in the years 2004–2010 based on information from the State Forests Information System (SFIS) database compared with selected forest districts within the Regional Directorate of State Forests in Cracow (RDSF). The forest districts were divided into two groups with two and six forest districts and confidence intervals around the mean were determined and the significance of linear regressions of the considered characteristics was tested. Additionally, the growth rate (decrease) of the unit cost was calculated. Our studies showed that natural disasters affect only certain unit costs regardless of the intensity of the forest management. The increase in unit costs resulted in economic losses in forest management. A full long-term analysis of the economic impact of natural disasters should be done, taking into account the cost of reforestation of destroyed areas which may become apparent only some years later.
Źródło:
Leśne Prace Badawcze; 2014, 75, 3; 263-275
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena występowania grzybni i owocników Phlebiopsis gigantea (Fr.: Fr.) Julich w pniakach sosnowych po wykonaniu zabiegu ochronnego przed hubą korzeni
Evaluating the persistence of Phlebiopsis gigantea (Fr.: Fr.) Julich mycelium and fruiting bodies in pine stumps after root-rot protection treatments
Autorzy:
Malecka, M.
Zolciak, A.
Sikora, K.
Sierota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/46306.pdf
Data publikacji:
2012
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
ochrona lasu
choroby grzybowe
huba korzeni
Heterobasidion annosum
zwalczanie chorob roslin
biopreparaty
preparat Rotstop F
preparat Rotstop S
preparat PG Suspension
preparat Pg-IBL
pniaki sosnowe
Phlebiopsis gigantea
rozwoj grzybow
Źródło:
Leśne Prace Badawcze; 2012, 73, 2
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of CO2 enhancement on beech (Fagus sylvatica L.) seedling root rot due to Phytophthora plurivora and Phytophthora cactorum
Autorzy:
Tkaczyk, M.
Sikora, K.
Nowakowska, J.A.
Kubiak, K.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/38525.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 3
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multipleksowa detekcja gatunków Phytophthora przy użyciu platformy Fluidigm
Multiplex detection of Phytophthora spp. using the Fluidigm platform
Autorzy:
Sikora, K.
Oszako, T.
Kubiak, K.
Nowakowska, J.A.
Malewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/2142612.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest soil
oomycetes
oak dieback
pathogens
next generation sequencing
gleby leśne
oomycety
zamieranie dębów
patogeny
sekwencjonowanie nowej generacji
Opis:
The genus Phytophthora plays an important role not only in agriculture but also in forest ecosystems. As the number of known Phytophthora species continues to grow, identifying new isolates in this genus has become increasingly challenging even by DNA sequencing. Therefore, the development of proper techniques for detection and identification is crucial for monitoring and control of these pathogens in the forestry sector. In recent years, new molecular methods using innovative approaches have indeed been developed. However, the majority of these methods was designed to detect single Phytophthora species. Techniques that are able to target multiple species would offer advantages, especially for the assessment of Phytophthora diversity in the environment. This paper describes a multiplex assay for the identification of eight Phytophthora isolates, down to the species level, based on a Fluidigm platform employing pyrosequencing. The obtained results showed that for an accurate determination of the species, it is sufficient to know the sequence of two markers, ITS and COX1. The sensitivity of this test is sufficient to identify Phytophthora in a pure culture. Unfortunately, analysis based on a pyrosequencing platform does not provide enough data to simultaneous identify multiple Phytophthora species in samples collected in the field. This problem could be resolved in the future by sequencing using more efficient platforms like Illumina or IonTorrent.
Źródło:
Leśne Prace Badawcze; 2020, 81, 4; 161-166
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pathogenicity of Phytophthora isolates originating from several woody hosts in Bulgaria and Poland
Autorzy:
Lyubenova, A.B.
Nowakowska, J.A.
Sikora, K.
Kostov, K.
Borys, M.
Slavov, S.B.
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/38488.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2016, 58, 3
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Four different Phytophthora species that are able to infect Scots pine seedlings in laboratory conditions
Autorzy:
Tkaczyk, M.
Sikora, K.
Nowakowska, J.A.
Anisko, E.
Oszako, T.
Belbahri, L.
Milenkovic, I.
Powiązania:
https://bibliotekanauki.pl/articles/38602.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2016, 58, 3
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-11 z 11

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