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Tytuł:
Wpływ typu siedliskowego lasu na koszty odnowienia lasu
Impact of the forest habitat type on the costs of reforestation
Autorzy:
Adamowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/979299.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
material cost
intangible cost
forest habitat
forest economics
reforestation
cash flow
Opis:
The article is a continuation of research on the relationship between forest habitat type and economic aspects of forest management. It assesses the impact of forest habitat types on reforestation costs. As a part of the implementation of the assumed work objectives, economic activities related to afforestation were identified. The research was carried out using the passive experiment method. The research was of registration and observational character. During the acquisition of the necessary data, there was no interference in the forestry work. The costs were analysed in three categories: total costs, tangible costs and intangible costs. Research conducted on the basis of source data obtained from 629 forest plots with a total area of 1100 ha. Based on the results of the research, it was found that the type of forest habitat significantly differentiated all the analyzed costs of reforestation. The forest habitat type differentiated material costs (48%) to a greater extent than intangible costs (43%). In addition, reforestation of deciduous forests has been proven to generate higher forest renewal costs than coniferous forest habitats. The costs of forest regeneration in forest habitats were higher than the costs incurred in coniferous habitats. Information on differences in forest management costs in relation to forest habitats can be used in further research on the forest management support system. The presented research contributes to the development of work on building economic models of the stands. These models must take into account not only the general economic aspects, but also the natural aspects of the forest that affect financial flows related to forest management.
Źródło:
Sylwan; 2020, 164, 07; 531-538
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena wpływu wybranych zabiegów hodowlanych i typów siedliskowych lasu na koszt pozyskania surowca drzewnego w czyszczeniach i trzebieżach
Evaluating the impact of silvicultural treatments and forest habitat type on the cost of timber harvest in cleanings and thinnings
Autorzy:
Adamowicz, K.
Gostołek, R.
Jaszczak, R.
Szczypa, P.
Szramka, H.
Powiązania:
https://bibliotekanauki.pl/articles/989459.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
typy siedliskowe lasu
zabiegi hodowlane
pozyskiwanie drewna
koszty
trzebieze
czyszczenia pozne
forest economics
forest habitat type
costs
silviculture
Opis:
Integrating the economic aspects of forest management (cost) with ecological elements of timber production (habitat type) significantly contributes to a better understanding of forest growth and utilisation. The type of silvicultural treatments and forest habitat types determine number of economic activities carried out in the stands and have an important impact on the associated costs. The aim of the study was to describe the impact of silviculture treatments and types of forest habitat on unit timber harvesting cost. We summarised the cost of timber logging depending on the harvest practices and types of habitats. In total, costs of treatments performed on the 2.5 thousand ha area were analysed. Obtained results were combined in relation to average unit costs of raw timber logging from individual habitats and silviculture treatments such as late cleanings and thinnings. The studied impact was assessed with standard deviation (SD) based on the assumption that the higher its value, the more important role of silvicultural treatments and forest habitats in defining the cost of raw timber harvesting. Our study showed that both factors (type of forest habitat and silvicultural treatment) had an effect on variability of timber logging costs. Comparing deciduous and coniferous habitats, higher costs were reported for the latter one. The highest unit cost of timber logging was found on the fresh coniferous habitat, while the lowest on the wet mixed forest. Moreover, the highest cost was reported for timber raw material harvested from late cleanings and the lowest from late thinnings. SD of the average cost of timber harvest ranged from 12.67 to 13.53 PLN depending on the silviculture treatments and from 0.68 to 2.39 PLN depending on the forest type. Our findings are important preliminary steps in broader study regarding revenues generated from forest stands growing on different habitats. Eventually it would help in assessing the profitability of economic activity that depends on environmental conditions of forest management.
Źródło:
Sylwan; 2016, 160, 12; 993-1001
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kolej rębu drzewostanów sosnowych według kryteriów ekonomicznych
Rotation age of pine stands on the basis of economic criteria
Autorzy:
Bednarski, K.
Miscicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/972950.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
pozyskiwanie drewna
drzewostany sosnowe
kryteria ekonomiczne
leśnictwo
gospodarstwa zrębowe
kolej rębu
final cut
forest habitat type
income
maturity
value
Opis:
There is a lack of an acceptable and practical method for calculating the optimal moment at which a forest stand is considered ready for felling. The aim of the research was to: (1) develop a concept for the calculation of the rotation age for forest stands based on economic criteria and (2) develop a methodology for obtaining and processing empirical data necessary for such calculation. It is assumed that stands are felled at the age affecting the age structure (area of age classes) of a forest in such a way that the difference between revenues from the sale of timber harvested in inter−mediate cuts and final cuts and the costs of timber harvest, silvicultural management, forest protection and administration is the largest. The developed method of calculating the rotation age was tested on the example of three Scots pine forests under the clear−cutting system representing typical forest habitats. The collected empirical material consisted of (1) own measurement data used to determine the value of the growing stock, and (2) data from the State Forests Information System used to determine the management costs, timber prices and the volume of timber harvested from intermediate cuts. These data helped to calculate the relationship between the income from a forest (including: revenues from the final and intermediate cuts, costs of forest management as well as timber harvesting and extraction) and the rotation age. The highest net income was when the rotation age was 108−125 years. The more fertile habitat, the shorter was the rotation age. The proposed methodology can be treated as a useful tool for the calculation of rotation age related to forest management in Poland. The dependence of income from a forest on the rotation age can be used to calculate losses that may arise when other than an optimal rotation age is applied.
Źródło:
Sylwan; 2016, 160, 03; 197-206
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bezkręgowce zasiedlające owocniki hubiaka pospolitego (Fomes fomentarius) w różnych typach siedlisk leśnych
Invertebrates of basidiocarps of tinder fungus (Fomes fomentarius) in different types of forest habitats
Autorzy:
Lik, M.
Powiązania:
https://bibliotekanauki.pl/articles/1008881.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedliska lesne
hubiak pospolity
Fomes fomentarius
zasiedlenie
bezkregowce
grupy systematyczne
fruiting bodies
fomes fomentarius
forest habitat type
settlement
Opis:
The aim of the study was to describe changes in abundance and settlement (number of specimens per 100 g of fungi) of basidiocarps of tinder fungus (Fomes fomentarius) by the invertebrates in different types of forest habitats. Tinder fungus that contained the invertebrates were collected from four sample plots located in the Tuchola Forest and the Myślęcinek – an area located within the administrative borders of Bydgoszcz city. Statistically differences between the settlement of basidiocarps by the invertebrates in different types of forest habitats were found.
Źródło:
Sylwan; 2011, 155, 08; 546-554
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ typu siedliskowego lasu na wielkość i masę igieł opadających w ciągu roku w 30-letnich drzewostanach sosnowych
Impact of the forest habitat type on the size and mass of the annual needles fall in 30-year-old Scots pine stands
Autorzy:
Turski, M.
Beker, C.
Jaszczak, R.
Szymański, A.
Powiązania:
https://bibliotekanauki.pl/articles/979218.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
sosna zwyczajna
Pinus sylvestris
czynniki siedliska
typy siedliskowe lasu
leśnictwo
opad igieł
needles fall
mass and size
forest habitat
Opis:
The article presents the size and weight of needles in 30−year−old Scots pine stands over one year with regard to the site conditions in which they grow (fresh mixed coniferous and fresh coniferous habitats). Two rectangular 1−hectare sample plots, which differed from one another only with the habitat type, were set up in Maszewo forestry in the Cybinka Forest District (western Poland). The plots were divided into 100 one−acre subplots, which were ascribed numbers from 1 to 100. In order to pick 10 plots a random number generator was used. The middle of the chosen plot became the central point of the 1−acre circular sample plots, where the measurements of all diameters at breast height and the height of every fifth tree were taken. Moreover, it was also the place where a square needle collection container (20 cm high, 1 m2 area) was located. The empty containers were placed in both experimental plots on 1st August 2017 and they were emptied on the first day of each month, throughout the entire year. The entire material was dried at the temperature of 65°C with an induced air flow. The needle mass was measured with the accuracy up to 0.001 g. Out of the samples collected each month, 300 needles were chosen at random in order to measure their length (after they were scanned with WinFOLIA program the size of each individual needle was established). Throughout the entire year, on fresh coniferous habitat the mass of the fallen needles was 2.8203 t/ha and it was by over 20% higher than it was determined for the fresh coniferous habitat. The lowest mass of the needle fall in each stand was in January, and the greatest in September on the fresh coniferous habitat, whereas in October on the fresh mixed coniferous habitat. In both of these cases, it was more than a half of the needle mass for the entire year. The average length of the fallen needles was in each month smaller on the fresh coniferous habitat and the differences between the analyzed stands were significant. The difference was the smallest (3.3%) in May, while the greatest (18.8%) in February. Moreover, significant differences in the length of the needles in the particular months in both types of stands were observed. The coefficient of variation for the needles length on the fresh mixed coniferous habitat ranged from 17.4 to 22.8%, whereas on the other habitat it varied between 14.2 and 21.6%. The mean of the coefficients of variation for the particular months was lower by 2.0% and for fresh coniferous habitat it reached 18.25%.
Źródło:
Sylwan; 2020, 164, 02; 118-126
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relacje między typem siedliskowym lasu a zbiorowiskiem roślinnym w warunkach górskich
Relationships between forest habitat types and phytosociological classification in mountain environment
Autorzy:
Pielech, R.
Malicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/990972.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy gorskie
Lesny Kompleks Promocyjny Sudety Zachodnie
fitosocjologia
typy siedliskowe lasu
zbiorowiska roslinne
syntaksonomia
forest habitat types
phytosociological classification
syntaxonomy
Opis:
Two main typological systems (forest habitat types and phytosociological classification) are used in forest research in Poland. The paper presents relationships between forest associations and forest habitat types in mountain environment of the Promotional Forest Complex ‘Sudety Zachodnie' (SW Poland). The results show that the link between these two topological systems is rather weak and ambiguous. This has strong implications for nature conservation in Poland, where forestry databases are widely used for inventories of protected habitats (in the sense of Habitat Directive).
Źródło:
Sylwan; 2014, 158, 09; 675-683
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie się smukłości modrzewia europejskiego (Larix decidua Mill.) w zależności od siedliska, wieku i pozycji biosocjalnej
Effect of forest habitat type, age and biosocial position on the slenderness of European larch (Larix decidua Mill.)
Autorzy:
Kaźmierczak, K.
Nawrot, M.
Pazdrowski, W.
Najgrakowski, T.
Jędraszak, A.
Powiązania:
https://bibliotekanauki.pl/articles/1008902.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
smuklosc drzew
modrzew europejski
Larix decidua
klasy wieku
warunki siedliskowe
pozycja biosocjalna drzew
slenderness
forest habitat types
biosocial position
larch
Opis:
The study presents the results of MANOVA of tree slenderness. The study material comprised 72 larch trees in a dominant stand of different age classes growing in fresh mixed coniferous (BMśw), fresh mixed deciduous (LMśw) and fresh deciduous (Lśw) forest habitats. The slenderness of each larch tree was calculated as the ratio of tree height [m] to breast height diameter [cm]. Basic statistical characteristics were also established. A three−way analysis of variance was performed assessing the statistical significance of the impact of forest habitat type, age and biosocial position of trees in the stand. A similar analysis was done for two basic measurement characteristics of trees – breast height diameter and height.
Źródło:
Sylwan; 2011, 155, 07; 472-481
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie zmian nasiąkliwości szkieletu glebowego w wybranych poziomach genetycznych przy zastosowaniu laboratoryjnej metody ścierania na przykładzie piaskowca magurskiego
Study of absorption changes in soil skeleton at selected genetic horizons using the laboratory method of abrasive wear - Magura sandstone case study
Autorzy:
Słowik-Opoka, E.
Klamerus-Iwan, A.
Powiązania:
https://bibliotekanauki.pl/articles/989820.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gleboznawstwo lesne
gleby gorskie
gleby lesne
poziomy glebowe
frakcje szkieletowe
nasiakliwosc
scieralnosc
absorbability
abrasion
sandstones
forest habitat
soil properties
mountain soils
water resources
Opis:
The paper presents the results of the study of changes in the normal volume of absorption capacity of soil skeletons formed from the Magura sandstone in the Beskid Makowski area, and sampled from different genetic horizons. In the field of hydrology, the key issue in assessing the water storage capacity of the soil cover storage reservoir is the water storage capacity of the skeleton part. In the case of mountain soils, the issue of determining water storage capacity seems to be of importance due to the significant share of skeleton fraction in the soil cover. Moreover, the absorption capacity of the skeleton is related to the fraction volume. Soil test pits were executed in the area of Myślenice Forest District (southern Poland), in the habitat of Carpathian beech species Dentario glandulosae−Fagetum, in a stand of fir and spruce Abieti Piceetum. The scope of field work included sampling of 6 test profiles. In each profile, samples were taken from three identified genetic horizons. Sieve analysis method was used to determine the total content of skeleton and fine earth, and percentage share of each fraction. For each skeleton fractions, normal absorption capacity and bulk density were found. An important, supplementary part of the study was the isolation of fine−grained and coarse sandstone in each sample. After such processing, the collected material was compared with the material remaining after the successive stages of soil skeleton abrasion (weathering) in an aqueous medium, according to methodological assumptions. A device was used to perform this stage of the study. Changes in water storage capacity were mainly considered taking into account the fraction size and the location depth in a soil profile (without specifying the thickness changes). Differences were found between the absorption capacity of skeleton occurring naturally in the soil, and water absorption capacity of skeleton devoid of the outer layer of detritus as a result of the abrasion method. Water storage capacity values were decreasing after each successive step of the experimental run, along with increasing fraction size and the depth of their position in the profile. Preliminary results showed that the changes of absorption capacity are more strongly correlated with size of the fraction than with position in a genetic horizon.
Źródło:
Sylwan; 2015, 159, 06; 452-460
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura zbiorowisk grzybów mykoryzowych po pożarze drzewostanu sosny zwyczajnej na siedlisku boru suchego
Structure of post-fire ectomycorrhizal communities of Scots pine stand in a dry coniferous forest habitat
Autorzy:
Hilszczańska, D.
Gil, W.
Olszowska, G.
Powiązania:
https://bibliotekanauki.pl/articles/980282.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedlisko boru suchego
drzewostany sosnowe
pozary lasow
tereny popozarowe
sosna zwyczajna
Pinus sylvestris
mikoryza
grzyby mikoryzowe
zbiorowiska grzybow
struktura zbiorowisk
roznorodnosc gatunkowa
forest fire
mycorrhiza
fungi
scots pine
coniferous forest habitat
Opis:
Ectomycorrhizal communities associated with Pinus sylvestris growing on dry coniferous forest habitat after the fire were studied. In order to investigate the fire effect on ectomycorrhizal fungi and changes of soil parameters in the upper (0−15 cm) soil layer three study plots were established: 1 – the control, 2 – fire zone left for artificial renewal (with the economic method of renewal) and 3 – fire zone left for natural renewal. The analysis of mycorrhizae revealed presence of eight mycorrhizal fungi on Scots pine roots and the value of Shannon−Wiener species diversity index H’ equaled to 1.76. The most abundant were mycorrhizae formed by Tomentella feruginea (31.7%) and Hebeloma crustuliniforme (23.3%). The fraction of Paxillus involutus and Rhizopogon sp. mycorrhizae was 16.7% and 13.0%, respectively. The lowest was the number of Thelephora terrestris mycorrhizae (only 1.7%). At the site 2, number of mycorrhizal fungi diminished to five and Shannon−Wiener species diversity index was also lower (1.37). The predominant were mycorrhizae of Cenococcum geophilum (26.7%) and P. involutus (21.7%), whilst the lowest were mycorrhizae of Suillus luteus (1.7%). Although at the third site the number of ectomycorrhizal fungi was the same as on the site 2, the dominance of Thelephora terrestris (66.7%) caused that Shannon−Wiener’s species diversity index was the lowest (1.05). Mycorrhizae of Paxillus involutus and Wilcoxina mikolae were characterised by similar abundance (13.3% and 11.7%, respectively). The lowest number of mycorrhizae was observed for Tomentella sp. (3.3%). Analysis of soil parameters showed an increase of pH on burnt sites in comparison to the control. The soil of burnt sites were also characterised by lower value of C and C/N ratio than the soil on the control treatment. The result showed that ubiquitous mycorrhizal fungi, such as T. terrestis, are able to persist on roots in changed soil environment with low content of nutritions.
Źródło:
Sylwan; 2019, 163, 01; 71-79
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Siedliskotwórcze właściwości gleb brunatnych kwaśnych wytworzonych z granitoidów w Górach Stołowych
Forest habitats on dystric Cambisols developed from granite in the Stolowe Mountains
Autorzy:
Gałka, B.
Podlaska, M.
Kabała, C.
Powiązania:
https://bibliotekanauki.pl/articles/993271.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Gory Stolowe
gleby lesne
gleby brunatne kwasne
wystepowanie
morfologia gleb
wlasciwosci fizykochemiczne
zasobnosc gleb
wlasciwosci siedliskotworcze
Siedliskowy Indeks Glebowy
granite
dystric cambisols
forest habitat
trophic soil index
Opis:
Deep dystric Cambisols developed on the homogenous regoliths of granite in the Stołowe Mountains National Park (SW Poland). In general, the soils have a texture of gravelly sandy loam, apparently silty, the strong acid reaction and the base saturation below 30% throughout the profile (oligotrophic variant). Only the soils developed in lower parts of slopes have a base saturation up to 40−50% or more (oligo−mesotrophic and mesotrophic variants respectively). These soils rich in humus and biologically active create in the low mountain zone the habitats suitable for the mixed mountain forests and, in a less acid variant, for the broadleaf mountain forests. Combined trophic soil index reached the values from 29 to 33 that confirmed mesotrophic type of the forest habitats. Most Cambisols developed from granite in the Stołowe Mountains are currently covered with spruce stands of artificial origin. However, a phytosociological analyses of vegetation carried out in preserved beech stands documented the presence of Luzulo luzuloidis−Fagetum community of poor beech forest that should be considered a potentially natural forest community on these soils and the strategic goal of the forest reconstruction in the national park.
Źródło:
Sylwan; 2013, 157, 05; 385-394
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena gleb Starego Miasta Szczecina jako potencjalnego siedliska leśnego z zastosowaniem Indeksu Trofizmu Gleb Leśnych
Evaluation of soils from the Old Town in Szczecin as a potential forest habitat using Forest Soil Trophism Index
Autorzy:
Tomaszewicz, T.
Chudecka, J.
Powiązania:
https://bibliotekanauki.pl/articles/985792.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
miasta
Szczecin-Stare Miasto
gleby miejskie
stopien degradacji
wlasciwosci chemiczne
tekstura gleby
potencjalne siedliska lesne
metody badan
Indeks Trofizmu Gleb Lesnych
urban soils
texture
chemical properties
potential forest habitat
Opis:
The aim of this study was to evaluate the soils from the Old Town in Szczecin (NW Poland) as a potential forest habitat using the Forest Soil Trophism Index (ITGL). For this purpose, six drillings were made, from which the samples of anthropogenic materials were taken. The method of soil material collection for the study did not allow the determination of bulk density required to calculate Soil Trophic Index – the indicator currently used in forest science. The methods commonly used in the soil sciences were used to determine the following properties of the soil samples: texture, pH in H2O, pH in KCl, electrical conductivity (EC), organic carbon content, total nitrogen content, base capacity (BC) and total content of Zn, Pb, Cd, Ni, Cr, Cu and Hg. It was found that the soils from the Old Town in Szczecin were alkaline and contained higher amounts of salts and heavy metals (especially Pb and Zn) than natural soils. The degradation degree of these soils was not significantly enough to prevent the succession of vegetation when anthropic pressure ceased. The ITGL values were high, in the range of 38.9−44.5, because of the presence of organic carbon in whole soil profile, which was also rich in nitrogen, high values of pH in H2O and base capacity. The ITGL values indicated the hypertrophic character of soil materials and potential habitat of the fresh broadleaved forest. After the colonization of tested area by pioneer species of trees, one expects the dominance of beech, oak, maple and linden, i.e. species frequently occurring in the immediate vicinity and at the same time the species constituting of potential vegetation for the Baltic Natural−Forest Province.
Źródło:
Sylwan; 2018, 162, 04; 343-350
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sezonowa dynamika liczebności chrząszczy z rodziny Ciidae w różnych typach siedlisk leśnych
Autorzy:
Lik, M.
Barczak, T.
Powiązania:
https://bibliotekanauki.pl/articles/1022027.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zasiedlanie
siedliska lesne
owady
Fomes fomentarius
entomologia lesna
chrzaszcze
lesnictwo
dynamika liczebnosci
hubiak pospolity
sezonowosc
Ciidae
liczebnosc
ciidae beetles
abundance
colonization
seasonal dynamics
fruiting bodies
fomes fomentarius
forest habitat type
Opis:
The presented studies concerned seasonal changes in abundance and index of settlement (number of specimens per 100 g of tinder fungus) of beetles from the Ciidae family (Col.) colonising the fruiting bodies of tinder polypore Fomes fomentarius depending on the degree of decomposition of the fruiting body and forest habitat type where the fungus occurs.
Źródło:
Sylwan; 2005, 149, 10; 54-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring cetyńców (Tomicus sp.) w różnych typach siedliskowych lasu
Monitoring of pine−shoot beetles (Tomicus sp.) in different forest habitat types
Autorzy:
Lesniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/973063.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Tomicus piniperda
bonitacja siedliska
cetyniec mniejszy
lesnictwo
drzewostany sosnowe
klasy wieku
owady
Tomicus minor
monitoring
typy siedliskowe lasu
szkodniki roślin
entomologia leśna
cytniec większy
pine−shoot beetle (tomicus sp.)
forest habitat type
age class
bonitet class
Opis:
The paper synthesises results from the study on pine−shoot beetles occurring in 10 types of forest habitat in seven forest districts of central Poland. The paper provides assessment of three methods for collecting insect−induced needle drop, as well as its quantities in age and bonitet classes in pure and mixed pine stands.
Źródło:
Sylwan; 2003, 147, 11; 61-67
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ drzewostanów o zróżnicowanym udziale świerka na gleby różnych typów siedliskowych lasu w Górach Stołowych
Influence of stands with diversed share of Norway spruce in species structure on soils of various forest habitats in the Stolowe Mountains
Autorzy:
Gałka, B.
Kabała, C.
Łabaz, B.
Bogacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/990987.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Gory Stolowe
lasy gorskie
drzewostany swierkowe
typy siedliskowe lasu
gleby lesne
wlasciwosci fizykochemiczne
indeks troficzny gleb
odczyn gleby
wegiel organiczny
zawartosc glinu
Siedliskowy Indeks Glebowy
ph
organic carbon
soil fertility
forest habitat type
trophic soil index
Opis:
Chemical properties and fertility of soils were compared under spruce, mixed and beech stands in four types of forest habitat (mountain broadleaf forest, mountain mixed broadleaf forest, mountain mixed coniferous forest and mountain coniferous forest) in 373 sites of forest monitoring in the Stołowe Mountains National Park, SW Poland. Soils under the spruce stands had higher organic carbon pools in their upper horizons, but lower pH, increased activity of exchangeable aluminum, lower contents of exchangeable base cations, available potassium and magnesium, resulting finally in lower values of the soil trophic index (SIG). The negative impact of spruce monocultures on the physicochemical soil properties was much stronger in the eutrophic habitats (dedicated to broadleaf forest) than in dystrophic ones. Weak positive effect of the beech introduction on soils in the dystrophic habitats indicated that the conversion of the coniferous into mixed or deciduous stands would not cause a rapid improvement in the physicochemical properties deformed previously under spruce monocultures.
Źródło:
Sylwan; 2014, 158, 09; 684-694
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smukłość modrzewia europejskiego (Larix decidua Mill.) i jej związki z innymi cechami biometrycznymi
Slenderness of European larch (Larix decidua Mill.) and its relationships to other biometric parameters
Autorzy:
Kaźmierczak, K.
Nawrot, M.
Pazdrowski, W.
Jędraszak, A.
Najgrakowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/994964.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
dendrometria
drzewa lesne
siedliska lesne
modrzew europejski
Larix decidua
smuklosc drzew
wiek drzew
piersnice drzew
wysokosc drzew
powierzchnia rzutu korony
srednica korony
dlugosc korony
korelacja cech
larch
slenderness
age
forest habitat type
tree growth area
crown projection area
Opis:
The study presents the relationships between larch slenderness and age, breast height diameter, height, crown width, crown projection area, crown length and habitat type. The study comprised larch trees in a dominant stand of different age classes growing in fresh mixed coniferous (BMśw), fresh mixed deciduous (LMśw) and fresh deciduous (Lśw) forest habitats. The slenderness of each larch was calculated as the ratio of tree height to breast height diameter. The crown projection area was calculated as a circle with a radius equal to the average radius of the crown. The average crown radius was established after its projection in the four main geographical directions. The crown length was calculated as the difference between the height of a tree and the height of crown location. Also an attempt was made to describe tree slenderness using multiple regression equations.
Źródło:
Sylwan; 2012, 156, 02; 83-88
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
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