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    Tytuł:
    Analiza wydajności zrywki drewna w drzewostanach bukowych
    The efficiency analysis of skidding and forwarding in beech stands
    Autorzy:
    Sieniawski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009738.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany bukowe
    zrywka drewna
    wydajnosc pracy
    lesnictwo
    pozyskiwanie drewna
    beech
    efficiency
    harvesting
    skidding
    forwarding
    Opis:
    The purpose of research was to analyse the efficiency of skidding and forwarding as well as relationships between these stages in beech stand. The large−sized wood was dragged by LKT 120 skidder, while middle−sized wood was loaded on trailer with tractor URSUS C330. The regression equations for determination of skidding cycle time and daily skidding efficiency were worked out. Average skidding efficiency amounted 21,99 m3/8 lh (labour hours) for large−sized and 15,68 m3/8 lh for middle−sized wood.
    Źródło:
    Sylwan; 2009, 153, 07; 466-471
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model zużycia paliwa przy pozyskaniu drewna sosnowego
    Model of fuel consumption during harvesting of pine wood
    Autorzy:
    Kusiak, W.
    Moliński, K.
    Walkowiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/994566.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    sosna
    Pinus
    pozyskiwanie drewna
    zuzycie paliwa
    modele matematyczne
    fuel
    efficiency
    pine
    wood harvesting
    Opis:
    Basing on the stand and technological characteristics models that demonstrate the amount of fuel consumed during pine wood harvesting were elaborated. These models allow to evaluate the degree of energy consumption during harvesting works and can be used to select a pro−environmental technology.
    Źródło:
    Sylwan; 2012, 156, 03; 218-224
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pakietowanie pozostałości zrębowych nowym sposobem wykorzystania biomasy leśnej do celów energetycznych
    Bundling of logging residues - a new method to use biomass for energy purposes
    Autorzy:
    Chlebowski, K.
    Jabłoński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1006454.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    surowce energetyczne
    biomasa lesna
    pozostalosci zrebowe
    pakietowanie
    energy wood
    logging residues
    wood harvesting
    slash bundler
    Opis:
    Woody fuels are perceived as an important potential renewable source of energy in Poland. With about 25 thousand ha of clear−cut every year, it is possible to collect over million tons of woody fuels in form of logging residues, which is usually left behind after timber and industrial wood have been taken away. The technology using slash bundlers for bundling logging residues is an interesting option to produce a woody fuel ready for burning. Logging residues bundles differ in their dimensions and weight depending on the bundling machine used for the operation. As the technology utilises green branches and tree tops for producing bundles, it may lead to losses in the amount of certain chemical elements in the forest site thus negatively affecting the future forest generations. The complexity of the problem calls for intensive research into the problem of using logging residues as a source of energy.
    Źródło:
    Sylwan; 2012, 156, 04; 315-320
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Udział oraz dokładność szacowania pozostałości zrębowych w ogólnej masie pozyskanego drewna
    Share and accuracy of estimation of logging residues in the total volume of harvested timber
    Autorzy:
    Gendek, A.
    Wężyk, P.
    Moskalik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/986464.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pozyskiwanie drewna
    pozostalosci zrebowe
    miazszosc
    biomasa drzewna
    szacowanie biomasy
    timber harvesting
    forest biomass
    logging residues
    estimation
    Opis:
    Due to the observed impacts of climate change on the natural environment, the demand for energy from renewable sources is growing, especially in the last decades. One of the possibilities in this respect is the use of forest biomass, especially that one which comes from logging residues. This type of wood raw material is obtained primarily in mature forests and during late thinnings. Estimation of the expected volume of logging residues from a particular cutting site is currently carried out in the State Forests, National Forest Holding with an accuracy oscillating at an acceptable level of ±40%. The purpose of this study was to estimate the share of logging residues in the total volume of the harvested biomass and to determine the difference and error between the estimated volume to be sold and actually harvested. The research was carried out at the 164 logging sites located in 10 forest districts of north−eastern part of Poland. The average volume of logging residues was 37.7 ±14.4 m3/ha, and the average error of their estimation was –6.1%.
    Źródło:
    Sylwan; 2018, 162, 08; 679-687
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wydajność zrywki drewna skiderem na terenach pochyłych
    Efficiency of timber skidding on the slopes
    Autorzy:
    Kulak, D.
    Stańczykiewicz, A.
    Szewczyk, G.
    Wala, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/980264.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pozyskiwanie drewna
    zrywka drewna
    skidery
    struktura czasu pracy
    wydajnosc pracy
    modelowanie
    timber harvesting
    skidding
    working time
    modelling
    Opis:
    The aim of the study is to characterise the working time structure of an operator of the LKT 82 skidder performing timber skidding on the sloping area, and to develop models of efficiency and time−consumption of the work depending on selected factors characteristic of the described transport process. The research was performed in the Sucha Forest District (S Poland). We considered two treatments: late thinning and felling performed in stands with the dominating share of beech. Logs obtained with chainsaws were initially extracted with horses and laid at the slope road. Later on the additional skidding with skidder tractor was done. Continuous timing of individual operations was performed with the use of a microcomputer equipped with time measurement software (accuracy of 1 second). We also determined skidding distance using a GPS device, the number of extracted logs in the load, and the volume of the logs. The total timing measurements lasted for a total of 70 h 24 min 27 s. During that time, the tractor made 72 cycles, transporting 998 logs with a total volume of 493.3 m3. In the mature stand, the average skidding distance amounted to approximately 1,160 m, a single load consisted of 3−4 logs with a volume of 7.7 m3. The operational efficiency of the skidding was 9.1 m3/h. In the thinning stand, the skidding distance was 1,230 m, the average load consisted of 22 logs with a volume of 5.8 m3. The operational efficiency amounted to 7.8 m3/h, on average. The working time structure was dominated by auxiliary (over 60%) and effective (nearly 30%) times. The obtained regression models of the duration of activities from the group of operational times were characterised by high correlation coefficient (about 0.75 for skidding time and driving without a load). Relatively strong relationships (r > 0.5) were also found between the times of collecting cable pulling and load attachment, and the volume of the extracted loads, and in the case of the times of collecting cable pulling also the type of treatment performed. The regression models for the times of log stacking, pulling the loads up with the winch and detaching them, despite the fact that they were statistically significant, characterised by relatively low correlation coefficients. The relationship between skidding efficiency and skidding distance was also determined (fig.). The duration of skidding cycles was described using the multiple regression with the volume of single loads and the skidding distance as the determinants. The regression models of skidding efficiency and time−consumption of skidding cycles may find practical application in estimating the efficiency of the tasks performed in stands and under conditions similar to those analysed in the present research.
    Źródło:
    Sylwan; 2019, 163, 07; 601-609
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Udostępnienie lasów do zbioru płodów runa leśnego w świetle przepisów i zwyczajów niektórych krajów Europy
    Forest availability for the harvesting of forest by−products in the light of regulations and traditions of the selected European countries
    Autorzy:
    Barszcz, A
    Sisak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026353.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    uboczne uzytkowanie lasu
    runo lesne
    przepisy prawne
    lesnictwo
    zbior
    Polska
    Europa
    forest accessibility
    non−wood forest products
    harvesting
    Opis:
    The paper is a review of regulations and principles concerning forests availability for the harvesting of non−wood forest products. The approach to this issue in the European countries is not uniform; account is taken of nature conservation, an interest of forest owners or local communities and sanctioned tradition. The need for the studies on the resources and control of harvesting volume are underlined.
    Źródło:
    Sylwan; 2003, 147, 03; 89-93
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ pozycji roboczej podczas ścinki drzew na wydatek energetyczny operatora pilarki
    Influence of working posture during the felling on energy expenditure of a chainsaw operator
    Autorzy:
    Grzywiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/989764.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pozyskiwanie drewna
    scinka drzew
    drwale
    pilarze
    pozycja ciala
    wydatek energetyczny
    working posture
    energy expenditure
    timber harvesting
    feller
    chainsaw
    Opis:
    Holding determined body postures during work is connected with energy expenditure. The more forced the posture is, the more muscles take active part in holding and stabilizing the working posture. In forest operations the most share of awkward (forced) working postures occur during the tree felling with a chainsaw. It is also one of the hardest activities in motor−manual timber harvesting process. The group of 10 experienced fellers in the age of 47.5±7.3 years was studied. The research was carried out on four Scots pine clear−cuts in western Poland, in spring and autumn without snow cover. The average air temperature was 7.1±4.8°C, and humidity amounted to 72±6.7%. In the simulation study the fellers cut thin wood slices from 30 cm stumps. The stumps were located close to each other in order to minimize the influence of passes from one to another. The diameter of stumps was selected so that it wouldn't exceed the effective length of the chainsaw bar. The felling was carried out with the chainsaw Stihl MS 361 with the power of 3.4 kW and weight of 7.5 kg. Net energy expenditure (NEE) was determined using the pulmonary ventilation measurement (MWE−1 meter) during simulation of felling in 4 working postures (fig.). The lowest energy expenditure was observed for kneeling down on one knee and squatting: 16.4 and 16.9 kJ/min, respectively. Standing bent forward working postures feature statistically higher energy expenditure, reaching 19.9 kJ/min with straight legs and 22.1 kJ/min with bent legs (p<0.05). The realized research confirmed that body posture during felling with a chainsaw influences the level of the feller's physical workload. Standing bent postures cause energy consumption which is higher than during squatting and kneeling on one knee. The most preferred working posture, from the point of view of energy expenditure and biomechanical workload during felling, is standing bent posture with straight legs. The other postures, especially squatting, can be used regularly for a short time in order to unburden a lumbar part of spine. Applying working postures that require less energy during felling with the chainsaw may contribute to reducing the work heaviness on the feller's workstation.
    Źródło:
    Sylwan; 2015, 159, 10; 824-830
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obserwacje migawkowe w pomiarach pracy przy pozyskiwaniu i zrywce drewna
    Snapshot observations in work measurement during timber harvesting and skidding
    Autorzy:
    Szewczyk, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/991301.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    obserwacje migawkowe
    prace lesne
    pozyskiwanie drewna
    zrywka drewna
    czas pracy
    pomiary
    timber harvesting
    skidding
    work measurement
    chronometry
    frequency study
    Opis:
    The paper presents results of examination on snapshot observation accuracy in measuring work times at harvesting and skidding of timber. High consistency between time measurements obtained by means of photography of work day method and snapshot observations was proved. Among advantages of the snapshot method one can name possibility to assess the time of work and breaks, evaluate proportion of supplementary work times and low labour intensity of the research.
    Źródło:
    Sylwan; 2014, 158, 11; 803-810
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ czynników organizacyjnych na wydajność eksploatacyjną harwestera
    Effect of organizational factors on harvester exploitation efficiency
    Autorzy:
    Błuszkowska, U.
    Nurek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/989285.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    mechanizacja prac lesnych
    pozyskiwanie drewna
    harwestery
    wydajnosc pracy
    wydajnosc eksploatacyjna
    czynniki organizacyjne
    forestry mechanization
    timber harvesting
    organization of forest works
    Opis:
    High unit costs of mechanized timber harvesting are a major obstacle for the development of this process in Poland. Apart from that, other important factors include forests structure, work organization and principles of the forest utilisation in the State Forests. Fragmentation and dispersal in the superintendence economic tasks related to the acquisition of wood affect the reduction of the degree of use of the machine during the working day. In this study, we paid particular attention to the harvester runs between successive tasks and between tasks and bases of the night stopover. The above−mentioned organizational factors can substantially affect the performance of the machine and their potential reduction could improve the economic efficiency of the use of harvesting machines in the Polish forests. The simulation calculations assumed fixed total area covered by the work of logging and fixed total amount of acquisitions. The parameters of the variables in the calculation was the number of tasks performed and the number of bases of the night stopover. Change in the previous parameter was clear with the volume of a single task and the distance between them. The paper discusses the results of research on the impact of these parameters on the multioperational machine operating efficiency. Reducing the number of jobs (increasing their size) causes significant increase in harvester efficiency. In extreme cases, it may be up to about 20%. The article also points to the possibility of better organization of work and thereby the economic effects of the use of harvesting machines in selected forest areas. Deciding on the organization of work in a specific forest district one should however also take into consideration principles of the forest utilisation.
    Źródło:
    Sylwan; 2016, 160, 06; 443-451
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ szlaków zrywkowych założonych w czasie czyszczeń późnych na kształtowanie się niektórych cech drzew
    The effect of strip roads established during late cleanings on the selected parameters of trees
    Autorzy:
    Giefing, D.F.
    Karaszewski, Z.
    Ziemski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026334.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    szlaki zrywkowe
    oddzialywanie na rosliny
    lasy
    uzytkowanie lasu
    czyszczenia pozne
    lesnictwo
    zabiegi pielegnacyjne
    strip roads
    forest environment
    timber harvesting
    timber extraction
    Opis:
    Different opinions concerning strip roads indicate the need to recognise the consequences of their establishment for the environment. The hypothesis has been put forward that the strip width exerts diverse effects on the neighbouring stands. The effect of strip roads on the selected parameters of trees and forest floor vegetation has been assessed.
    Źródło:
    Sylwan; 2003, 147, 03; 11-18
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relacje między użytkowaniem głównym i przyrostem miąższości
    Relationships between principal felling and volume increment
    Autorzy:
    Bruchwald, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023593.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany rebne
    dendrometria
    drzewostany
    surowce drzewne
    przyrost miazszosci
    lesnictwo
    jakosc
    uzytkowanie rebne
    drzewostany przedrebne
    miazszosc drzew
    final felling
    intermediate felling
    harvesting
    volume increment
    public forests
    poland
    Opis:
    There are relationships between volume increment of a forest stand and the volume of timber harvested from it, which can be treated as forest management strategies. These are: A – harvesting=volume increment, B – harvesting>volume increment, C – harvesting
    Źródło:
    Sylwan; 2004, 148, 05; 3-12
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie monitora pracy serca do oceny efektywnego wydatku energetycznego w ręczno-maszynowych technologiach pozyskiwania drewna
    Use of heart rate monitor in assessing the net energy expenditure during motor-manual cutting
    Autorzy:
    Leszczyński, K.
    Stańczykiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/990022.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    pozyskiwanie drewna
    robotnicy lesni
    operatorzy pilarek spalinowych
    fizjologia pracy
    tempo metabolizmu
    wydatek energetyczny
    czestosc skurczow serca
    energy expenditure
    chainsaw operator
    timber harvesting
    metabolism rate
    late thinning
    Opis:
    Energy expenditure during labour constitutes one of the criteria used for assessing the laboriousness of timber harvesting. The major objective of this study was to point out the possibilities of defining work net energy expenditure (NEE) as related to the frequency of heart rate in the field exercise tests by changing posture and varied external work load. The scope of the study was restricted to the work of chainsaw operators performing hard physical labour during late thinning of fir and spruce on the middle mountain (Beskid Makowski, Beskid Śląski). The research involved dynamic work with elements of static load for which the NEE was investigated by means of heart rate as well as respiratory – indirect estimation of oxygen consumption as results of airflow measurement. The advantage of both methods is simplicity of application, the lack of necessity to perform additional analyses as time study and expected medium error. The conducted calculations pointed out to a strong linear correlation, where correlative coefficient was equal to 0.67. The conducted model analysis (including, among others: the normality, autocorrelation of residuals and identification of influential values) has confirmed its validity at the 10% statistical error. The obtained regression coefficient indicates a larger increase in value as compared to the available formulas with acceptable in practice standard error of prediction on 6.05 kJ/min level.
    Źródło:
    Sylwan; 2014, 158, 02; 124-131
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czynniki wpływające na zmiany zwięzłości gleb leśnych podczas pozyskiwania surowca drzewnego
    Factors affecting the changes in penetration resistance of forest soils during timber harvesting
    Autorzy:
    Kulak, D.
    Stańczykiewicz, A.
    Szewczyk, G.
    Lubera, A.
    Strojny, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/989881.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    trzebiez pozna
    pozyskiwanie drewna
    metody pozyskiwania drewna
    oddzialywanie na glebe
    gleby lesne
    ugniatanie gleby
    zwiezlosc gleb
    timber harvesting
    mechanized
    motor−manual
    soil penetration resistance
    Opis:
    The objective of the studies was to determine the penetration resistance (cohesion) of soil compacted at timber harvesting in Scots pine stands subjected to late thinning. The scope of the investigations was limited to two technologies – the mechanized one, using a harvester−forwarder machine set, as well as the motor−manual one, employing petrol chainsaws and a farm tractor for forwarding and dragging of felled trees. The analyses were performed in central Poland, in the Staszów Forest District, for two habitats – fresh mixed coniferous forest and fresh mixed deciduous forest. The measurements of soil cohesion were taken with the use of Eijkelkamp 06.15.SA Penetrologger penetrometer along the five measurement lines situated perpendicularly to the main skidding track. The soil penetration resistance was measured in eight spots for every measurement line: in the middle of the left and right wheel−rut, between the wheel−ruts, on the left and right roadside within a distance of 0.5 and 1 m from the wheel−rut edge, and 10 m from the right wheel−rut; the latter location was treated as the reference. The mechanized timber harvesting caused stronger compaction of soil, particularly in wheel−ruts, where the recorded values of soil cohesion exceeded 3 MPa (fig. 1). For the technology with farm tractor for skidding, the greatest soil compaction was also encountered in wheel−ruts, reaching up to 2.5 MPa. With regard to both logging technologies, the analysis of variability in penetration resistance of the top 10−cm soil horizon revealed a statistically significant increase in soil compaction in wheel−ruts when compared with other measuring points along and nearby the skid track (fig. 2). The employed technology of timber harvesting and the degree of soil cohesion in wheel−ruts were proved to be correlated. In respect of the mechanized variant, the mean value of soil penetration resistance in the top 10−cm layer counted up to 2 MPa and was significantly greater than the one in motor−manual technology, where it did not exceed 1.3 MPa. No significant differences in soil compaction in reference to the investigated forest habitats were revealed, though it was stronger in fresh mixed coniferous forest, with regard to both technological variants. The motor−manual technology caused the increase in soil penetration resistance by 2% on the roadside, nearly 20% in the middle of the skid track and over 70% in wheel−ruts. While the mechanized logging operations resulted in 30% increase in soil cohesion on the roadside, 55% between the wheel−ruts and over 250% inside the wheel−ruts (fig. 3).
    Źródło:
    Sylwan; 2015, 159, 04; 318-325
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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 gospodarki leśnej na na wybrane gatunki małych ssaków
    Influence of forest management on ground-dwelling small mammals
    Autorzy:
    Bogdziewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/991453.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    gospodarka lesna
    pozyskiwanie drewna
    rebnie zupelne
    oddzialywanie na zwierzeta
    drobne ssaki
    ryjowka aksamitna
    Sorex araneus
    ryjowka malutka
    Sorex minutus
    nornica ruda
    Clethrionomys glareolus
    nornik bury
    Microtus agrestis
    nornik zwyczajny
    Microtus arvalis
    mysz lesna
    Apodemus flavicollis
    mysz zaroslowa
    Apodemus sylvaticus
    liczebnosc
    small mammals
    forest management
    clear−cutting
    harvesting
    Opis:
    Maintaining biological diversity is one of the main goals of modern forestry. To reach this objective we need to know how management practices affect forest species. This study summarizes the results published in papers on the influence of clear−cutting on small mammals. Most of the studied species increased in abundance on clear−cuts. The response of voles (Microtus agrestis and M. arvalis) was uniformly positive. Mice (Apodemus flavicollis and A. sylvaticus) and shrews (Sorex araneus and S. minutus) varied in their responses but generally their number increased on clear−cuts. Bank voles (Myodes glareolus) appeared to be associated with the heterogeneity of habitat rather than with the age of forest stands per se. Nevertheless, our knowledge on the effects of forest management on small mammals is far from complete. In particular, there are almost no studies on the subject conducted in Western Europe or concerning management practices other than clear−cutting.
    Źródło:
    Sylwan; 2013, 157, 07; 546-552
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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