Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "(J.P.)." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 70
Tytuł:
Intensywna gospodarka leśna na Południu Stanów Zjednoczonych Ameryki Północnej
Intensive Forest Management in the US South
Autorzy:
Zasada, M.
Siry, J.P.
Cieszewski, C.J.
Powiązania:
https://bibliotekanauki.pl/articles/1023559.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
herbicydy
Stany Zjednoczone
gospodarka lesna
produkcyjnosc lasu
lasy
ochrona lasu
nawozenie
lesnictwo
uprawa plantacyjna
drzewa lesne
intensive forest management
fertilization
herbicide
thinning
Opis:
Forest management profitability can be raised by increasing stand productivity, which comprises improving wood yields and quality. The United States of America provides a good example of intensive management techniques applied on large scale to substantially increase forest productivity. Experiences of the U.S. South's forestry sector provide evidence that research−based intensive growth technologies are the key factor in ensuring adequate wood supplies and in effectively promoting sustainable management of the region's forest resource. Management treatments such as applications of fertilizers and herbicides have yielded lard productivity increases to date. Genetic improvement also has yielded large productivity increases along with improving stem straightness, wood properties, and disease resistance. Modern timber growth technologies already make possible doubling or even tripling current pine growth rates, while research progress indicates that current growth technologies can be improved even further.
Źródło:
Sylwan; 2004, 148, 02; 61-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wylesień na krótkoterminowe zmiany składu chemicznego wody w zlewni Potoku Malinowskiego (Beskid Śląski)
Influence of deforestation on short-term changes in the chemical composition of water in the Malinowski Stream catchment (southern Poland)
Autorzy:
Kosmowska, A.
Żelazny, M.
Małek, S.
Siwek, J.P.
Powiązania:
https://bibliotekanauki.pl/articles/989906.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gory
Beskid Slaski
wylesienia
zlewnia Potoku Malinowskiego
wody plynace
sklad chemiczny
zmiany skladu chemicznego
streamwater chemistry
sulfur
nitrogen
flood events
deforestation
Opis:
The aim of the study was to determine the effect of deforestation caused by environmental pollution on the chemical composition of stream waters draining the small catchments located in the Skrzyczne massif (Beskid Śląski, southern Poland). In the 1950−60s this area was subjected to heavy anthropogenic pressure with excessive deposition of sulfur and nitrogen compounds. It resulted in the damage to the stands and deforestation of the ridge fragments of the studied area. The study was conducted in the catchment of the Malinowski Stream and its two subcatchments: forested and deforested in 2013. Waters of the studied streams characterized by low conductivity and mineralization. In the ridge subcatchments they were slightly acidic and in the main catchment – slightly alkaline. In all catchments anions were predominated by sulfates – with the largest in the deforested catchment (31% mval/L). Also nitrates had very large share in the structure of the chemical composition of water, particularly in the forested catchment (15% mval/L). Interestingly, there were low levels of bicarbonates, particularly in the ridge catchments, with their share lower than sulfates and nitrates. Cations in all streams were predominated by calcium. The structure of the chemical composition of water of the Malinowski Stream, expressed by the average share of individual ions was as follows: SO4−HCO3−NO3−Cl−F−Ca−Na−Mg−K−NH4, and in the case of streams draining small ridge catchments: – SO4−NO3−HCO3−Cl−F−Ca−Na−Mg−K−NH4. Conductivity of water decreased together with increased water levels in streams during floods. In the deforested catchment this decrease was more evident. The reaction of nitrate concentration to the increase in water level was however different, as in the stream draining the forested catchment it decreased sharply, while in the deforested catchment it decreased slightly or remained at the similar level. In the dry periods the chemical composition of waters of the examined streams were subject to far less change than during the floods, with the changes of e.g. conductivity being much higher in the stream draining the forested catchment.
Źródło:
Sylwan; 2015, 159, 09; 778-790
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wiatrołomu i degradacji drzewostanu na zróżnicowanie chemizmu wód w zlewni Potoku Kościeliskiego w obszarze Tatrzańskiego Parku Narodowego
Effect of wind damage to tree stands on spatial differences in water chemistry in the Koscieliski Stream catchment in the Tatra National Park
Autorzy:
Żelazny, M.
Siwek, J.P.
Fidelus, J.
Stańczyk, T.
Siwek, J.
Rutkowska, A.
Kruk, P.
Wolanin, A.
Jelonkiewicz, L.
Powiązania:
https://bibliotekanauki.pl/articles/987105.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
parki narodowe
Tatrzanski Park Narodowy
wiatrolomy
degradacja drzewostanow
wylesienia
zlewnie rzek
zlewnia Potoku Koscieliskiego
wody odplywowe
sklad chemiczny
azotany
zmiany skladu chemicznego
water chemistry
nitrate
deforestation
tatra national park
Opis:
The study focused on the effects of deforestation by heavy winds and tree stand damage produced by bark beetle invasion on water chemistry of mountainous catchment of Kościeliski Stream in the Tatra National Park (southern Poland). 200 samples of stream and spring water were collected in three series: in July, August and October 2015. Water samples obtained from areas characterized by tree stand damage caused by heavy winds were found to have much higher mean concentration of nitrate (15.44 mg/L) as well as a much higher overall mean nitrate content (3.44% mval/L) than samples obtained from non−deforested areas (3.26 mg/L and 0.78% mval/L). The increase in nitrate concentration and its share in overall water chemistry was high enough that the anion sequence for the deforested areas became altered from HCO3>SO4>NO3>Cl to HCO3>NO3> SO4>Cl. The mean change in water nitrate concentration in areas with tree stands damaged by the bark beetle was smaller (6.17 mg/L; 1.60% mval/L) than that for areas deforested by wind. The concentration of NO3 – in stream water in deforested areas varied more than that in stream water in non−deforested areas.
Źródło:
Sylwan; 2017, 161, 01; 27-33
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura czasu pracy harwesterów podczas pozyskania przygodnego
Structure of the operating time of the harvesters during casual logging
Autorzy:
Dvorak, J.
Walczyk, J.
Hoskova, P.
Powiązania:
https://bibliotekanauki.pl/articles/989858.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
usuwanie szkod
pozyskiwanie drewna
harwestery
struktura czasu pracy
wydajnosc pracy
kleski zywiolowe
harvester
operational time
random logging
productivity
Opis:
Natural disasters often cause that large share of acquisitions are performed under contingent conditions. High concentration of raw wood material and urgent need for its rapid removal from the forest demand use of harvesters. Material acquisition in such conditions is much harder and causes loss of performance for working machines. The objective of this paper was to determine the decrease in harvester performance during acquisition of fallen trees, wood scrap and suspended trees compared to acquisition of undamaged trees. Performance analysis was conducted on 10 harvesters from different power class working in the Czech Republic in years 2007−2012. The time structure was determined for the timber acquisition under contingent conditions in 22 forest stands. Later on it was compared with acquisition under normal conditions, i.e. scheduled acquisition on areas with good load carrying capacity and without obstacles and with an inclination up to 33%. There was significant difference in the mean operating time requirements between harvesters from the analysed power classes. Machines form 1st class differed significantly form devices from 2nd and 3rd classed. Results indicate that in spruce stands with wood scrap time consumption increases by 7% when average and high performance harvesters are used. The increase is by 33% during acquisition of fallen trees, while time consumption increases by as much as 79% during acquisition of suspended trees. During acquisition of subversion and wood scrap, performance of average and high performance harvesters ranged between 1.71 up to 17.37 m³/h depending on thickness and type of the damage to obtained trees. Important achievement of presented research is correction factors allowing to change harvester performance standards, while acquisition of fallen trees, wood scrap and suspended trees. Average value of correction factor is 1.19.
Źródło:
Sylwan; 2015, 159, 04; 300-306
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przyrost i wzrost nadziemnej i podziemnej czesci podrostow jodlowych
Autorzy:
Skrzyszewski, J.
Szczygiel, P.
Powiązania:
https://bibliotekanauki.pl/articles/813975.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
jodla pospolita
wzrost roslin
hodowla lasu
Abies alba
podrost
lesnictwo
system korzeniowy
drzewa lesne
Źródło:
Sylwan; 2002, 146, 06; 41-49
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ czyszczeń późnych i trzebieży wczesnych na skład i strukturę zgrupowań biegaczowatych zamieszkujących drzewostany sosnowe
The effect of late cleanings and early thinnings on the composition and structure of carabid assemblages of inhabiting pine forest
Autorzy:
Skłodowski, J.
Zdzioch, P.
Powiązania:
https://bibliotekanauki.pl/articles/1026369.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
struktura zgrupowan
drzewostany sosnowe
fauna
sklad gatunkowy
owady
czyszczenia pozne
lesnictwo
biegaczowate
Carabidae
zabiegi pielegnacyjne
trzebiez wczesna
carabidae
assemblage structure
sbo
mib
late cleanings
early thinnings
Opis:
The effect of late cleanings and early thinnings on carabid assemblages in a stand was established one year and three years following the treatment. Cuttings have caused changes in the composition of the main carabid species. The number of the representatives of the xerophilous, Palaearctic and Holarctic species has declined while the share of individuals of the autumn development type and of forest species has increased. Following the cuttings the SCP index and the Mean Individual Biomass have attained higher values. The results suggest that tending cuttings in the stand have a favourable effect on the carabid assemblages.
Źródło:
Sylwan; 2003, 147, 03; 57-64
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Właściwości gleby pod okapem czterech gatunków drzew leśnych po 30 latach od ich posadzenia na dwóch różnych siedliskach
Soil properties under the canopy of four forest tree species 30 years after planting on two different forest sites
Autorzy:
Mroziński, P.
Modrzyński, J.
Powiązania:
https://bibliotekanauki.pl/articles/1018330.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
siedliska lesne
Larix decidua
Quercus robur
wlasciwosci fizyczne
daglezja zielona
lesnictwo
Picea abies
dab szypulkowy
bor mieszany swiezy
modrzew europejski
wlasciwosci chemiczne
gleby lesne
Pseudotsuga menziesii
las mieszany swiezy
drzewa lesne
swierk pospolity
forest trees
humus type
soil properties
site fertility
central europe
Opis:
The main objective of this study was to demonstrate a relationship between the direction and effectiveness of impact of particular tree species on soil properties and the initial site fertility. The studies were conducted on two neighbouring experimental plots with different forest site types (fresh mixed coniferous forest – BMśw and fresh mixed deciduous forest – LMśw). The analysed species Norway spruce (Picea abies L. Karst.), European larch (Larix deciduas Mill.), Douglas fir (Pseudotsuga menziesii Franco) and penduculate oak (Quercus robur L.) were planted in three replications on 400 m2 plots. It was stated that: 1) the humification processes ongoing under the canopy of the analysed tree species are, to a large degree, determined by the type of forest site; 2) under the same tree species the content of calcium and nitrogen in the nitrate form was found to by markedly lower in the BMśw forest site; 3) in the BMśw forest site, the pH and electrolytic conductivity of the soil under the majority of the analysed tree species were lower; 4) the degrading impact of coniferous species on soil was noticeably stronger on the poorer BMśw forest site.
Źródło:
Sylwan; 2006, 150, 08; 26-37
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biegaczowate (Carabidae, Col.) drzewostanów Puszczy Piskiej zniszczonej przez huragan - rok "zero"
Autorzy:
Skłodowski, J.
Zdzioch, P.
Powiązania:
https://bibliotekanauki.pl/articles/1022635.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
fauna
drzewostany pokleskowe
owady
Puszcza Piska
lesnictwo
biegaczowate
Carabidae
carabidae
windthrow
windbreak
hurricane
forest
regeneration succession
Opis:
Exceedingly violent winds can result in windbreak and in windthrow. It has happened in summer of 2002 in Pisz Forest District (north part of Poland). Strong wind damaged about 30 000 hectares of pine forest. In most situations, damaging wind resulted in windthrow rather than windbreak. In total 30 plots were selected for the studies, 15 plots in Pisz forest (damaged by wind) and 15 control plots in Maskulińskie District Forest (not damaged by wind). There were distinguished 5 age variants of stands, all of them in three recapitulations. The five age classes of stands were: I class (20−30 years old), II class (30−40 y.), III class (40−50 y.), IV class (50−70 y.) and V class (above 70 years old). In total 4 000 carabids individuals belonging to 46 species were caught during studies. The wards analy− sis showed substantial diference of carabid assemblages occurring in damaged and non damaged forest. In damaged forest, small zoophages, hemizoophages, an open area or eurtyopic species, xerophilus species were frequently observed. Substantial differences in mean individual biomass of assemblages occurring in damaged and non damaged forest were also observed.
Źródło:
Sylwan; 2005, 149, 05; 43-51
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zroznicowanie funkcji lasu dla wybranych cech taksacyjnych drzewostanow
Diversification of the forest functions for the chosen taxation traits of tree stands
Autorzy:
Golojuch, P
Pokora, J.
Powiązania:
https://bibliotekanauki.pl/articles/880750.pdf
Data publikacji:
2008
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
urzadzanie lasu
funkcje lasu
waloryzacja
lasy
las wielofunkcyjny
cechy taksacyjne
typy siedliskowe lasu
drzewa lesne
gatunki panujace
wiek drzew
Nadlesnictwo Doswiadczalne Zielonka
Opis:
Rosnące zapotrzebowanie społeczne na pozagospodarcze funkcje lasu zmusza leśników do poszukiwania metod równoważenia znaczenia wszystkich funkcji. Do realizacji nowych zadań leśnictwu niezbędne są dane, które pozwolą określić zdolność lasu do spełniania wielostronnych funkcji i aktualny stopień ich realizacji. Jednym ze sposobów pozyskania takich informacji może być opracowanie punktowej metody oceny funkcji lasu. Prezentowana praca jest próbą weryfikacji opracowanej metody waloryzacji funkcji lasu, polegającej na analizie funkcji lasu w zależności od takich cech jak typ siedliskowy lasu, gatunek panujący oraz wiek gatunku panującego.
The observed growing social demand for non-economical forest functions makes it necessary for foresters to search for ways of balancing the importance of individual functions of forests. In order to fulfil these new tasks, foresters need the essential data which will allow them to determine the capability of forests to accomplish their multilateral functions and to assess the current level of their realisation. The presented paper constitutes an attempt to verify the developed method of evaluation of forest functions involving the analysis of forest functions in relation to such traits as: forest site type, dominant species as well as the age of the dominant species.
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2008, 10, 3[19]; 217-229
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wartość rekreacyjnej funkcji lasu w świetle wyników ogólnopolskiego badania opinii społecznej
Value of leisure-related function of forest in view of the results of nationwide survey in Poland
Autorzy:
Skłodowski, J.
Gołos, P.
Powiązania:
https://bibliotekanauki.pl/articles/989348.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
funkcje lasu
funkcje rekreacyjne
wartosc rekreacyjna
hipotetyczna gotowosc finansowania
opinia spoleczna
badania ankietowe
ce method
wtp
education
age
respondents' financial situation
forest management for tourist purposes
Opis:
Driven by social and economic changes, which have taken place for the last 30 years, the European forest management objectives have been redefined. By the action of public opinion, forest management, increasingly frequently and in a broader range, focuses on public benefits from forests. One of the most important functions is the possibility of leisure and recreation in the forest. The purpose of the research was the analysis of the hypothetical readiness to finance the leisure−related function of forest based on WTP (Willingness To Pay) amount. A question, which enabled the assessment of a social value of leisure−related function of forest, was asked to a random−quota sample of 1000 people over 18 years of age during the nationwide survey carried out in 2013 by TNS Polska. Out of 1000 respondents, the WTP>0 was declared by 29% respondents. Surveyed persons indicating forest with poorer infrastructure declared higher values calculated per household (PLN 13.59 ±0.84) than respondents who selected a better managed forest (PLN 12.86 ±0.88, PLN 12.91 ±1.46). The average WTP amount per person for respondents with the university degree (bachelor and master degree) was PLN 6.23 ±0.48, whereas for respondents with lower education, it was on the level of PLN 5.26 ±0.25. The average WTP also depended on the age of respondents. It was PLN 11.42 ±1.43 for 20−year−olds per family, whereas for 40−year−olds it was PLN 14.16 ±1.05. The average WTP per person increased along with the age of respondents; from PLN 4.37 ±0,42 (20−year−olds) to PLN 6.00 ±1.11 (80−year−olds). Disregarding the top WTP value per household of respondents in the worst financial situation (20.00 ±10.00), the average WTP value per household increased from PLN 10.26 ±1.69 (in poor financial situation) to PLN 14.55 ±2.97 (very well−off).
Źródło:
Sylwan; 2016, 160, 09; 759-766
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hipotetyczna gotowość finansowania publicznych funkcji lasu i gospodarki leśnej
Hypothetical readiness for financing the most important public functions of forest and forest management
Autorzy:
Gołos, P.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/989519.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
gospodarka lesna
funkcje lasu
funkcje publiczne
funkcje turystyczne
funkcje wypoczynkowe
hipotetyczna gotowosc finansowania
badania ankietowe
contingent valuation
leisure−related functions of forest
logistic regression
Opis:
The purpose of the research was to determine the impact of selected sociological factors related to the readiness for hypothetical financing the most important public functions of forest and forest management (WTP, willingness to pay). In direct surveys carried out in August 2008 by the nationwide research center on representative random sample of 500 residents of Warsaw we used the contingent valuation method (CVM) format of questions with a debit card. The result of determining the values of forest and forest management public benefits with the CVM method (set of values WTP>0 [PLN/year/household]) was analyzed via logistic regression, in which a dependency between the fact of declaring the value WTP>0 (1 – WTP>0 declaration, 0 – WTP=0 declaration) and the selected groups of explanatory variables was assessed. The division of explanatory variables into groups resulted from the survey structure and content of questions, related to different aspects of leisure related forest management. The significance of variables in analyzed regression models was investigated with the maximum likelihood method using Wald's chi−square statistic for the 3rd type analysis. Wald's confidence intervals were designated for regression coefficients in exponential scale, and in order to facilitate the interpretation of results, odds ratios were determined. The logistic regression was performed in SAS 9.3 program with the LOGISTIC procedure. The probability of WTP>0 declaration increased among respondents, who indicated: a) peace and quiet as elements which decide of tourist attractiveness of forests; b) car parks as missing elements; c) that they do not feel well in forests with unsightly tree stand; and d) that they relax better in forests where there are shelters, benches, and roofings.
Źródło:
Sylwan; 2016, 160, 07; 597-608
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie wielkości ciała wybranych gatunków biegaczowatych w ekosystemach leśnych Puszczy Piskiej zaburzonych przez huragan w 2002 roku
Body size differentiation in selected carabid species inhabiting Puszcza Piska forest ecosystems disturbed by the hurricane in 2002
Autorzy:
Garbalińska, P.
Skłodowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1013382.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
huragany
Carabus arcensis
Carabus violaceus
kleski zywiolowe
lesnictwo
wielkosc ciala
zmiennosc
Pterostichus niger
drzewostany pokleskowe
owady
Puszcza Piska
zgrupowania zwierzat
biegaczowate
Carabidae
body size
carabus arcensis
carabus violaceus
pterostichus niger disturbance
hurricane
intraspecific differentiation
Opis:
Intraspecific differentiation in body size was investigated for Carabus arcensis, C. violaceus and Pterostichus niger populations inhabiting pine forests disturbed by the hurricane and non−disturbed ones. Post−hurri−cane stands were localized in Szast Reference Forest (Pisz Forest District, NE Poland) disturbed by the hurricane in July 2002 and left "untouched" as an experimental area. Non−affected stands were set in Maskulińskie Forest District (NE Poland). Beetles were sampled using pitfall traps. The hurricane contributed to significant reduction in both C. arcensis and C. violaceus body length. However, an opposite trend was observed for P. niger, which increased considerably in body size in disturbed stands compared to control ones. The most pronounced changes were observed in 2007. Differences in habitat preferences and food resources utilization of C. arcensis, C. violaceus and P. niger are discussed.
Źródło:
Sylwan; 2008, 152, 11; 3-15
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 70

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies