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Wyświetlanie 1-15 z 41
Tytuł:
Semiwariancje tekstury obrazów satelitarnych Landsat TM obszarów leśnych
Semivariances of Landsat TM satellite imagery texture of forested areas
Autorzy:
Zawadzki, J.
Cieszewski, C.J.
Zasada, M.
Powiązania:
https://bibliotekanauki.pl/articles/972817.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zdjecia satelitarne
tereny lesne
interpretacja
teledetekcja satelitarna
semiwariancja
Landsat TM
lesnictwo
semivariance
semivariogram
geostatistics
textural classification
remote sensing
Landstat TM
Opis:
The paper presents selected applications of the geostatistical methods for remote sensing studies of forest ecosystems. The texture of the remote sensing images of the forests can be highly complex, but at the same time it is very useful for interpretation of these images. We explored differences on semivariances calculated from transects of the Landsat TM images associated with images of young, middle−aged, old, and natural versus planted stands, as well as compared semivariances for loblolly pine (Pinus taeda L.) and longleaf pine (Pinus palustris Mill.) in Georgia, USA. We analyzed the imagery data in conjunction with ground measurements. The results showed that in spite of the relatively low Landsat TM resolution (30m), the semivariances might give useful additional information about the above−mentioned classes. The semivariances for loblolly pine depend on the age as well as on the origin of the forest stand (natural vs. planted). On the other hand, because of the low−resolution, the classical parameters of a range of semi−variances are rather difficult for classification. However, we found important differences for sill values as well as for semivariance values for the distances of a few lags. These parameters seem to be useful for forest stand discrimination. Significant differences were also found between semivariances calculated from loblolly pine and longleaf pine stands.
Źródło:
Sylwan; 2003, 147, 07; 40-52
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zywotnosci jesionu wynioslego [Fraxinus exelsior L.] w drzewostanach po powodzi w 1997 roku na terenie Nadlesnictwa Przytok
Autorzy:
Ubysz, B.
Powiązania:
https://bibliotekanauki.pl/articles/811326.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany pokleskowe
opor elektryczny
tereny popowodziowe
jesion wyniosly
zywotnosc
Fraxinus excelsior
lesnictwo
Nadlesnictwo Przytok
metody oceny
drzewa lesne
Źródło:
Sylwan; 2001, 145, 04; 57-65
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany składu gatunkowego i stopnia pokrycia przez rośliny na powierzchniach zaburzonych przez huragan na terenie Puszczy Piskiej w 2002 roku
Changes in species composition and cover of understory plants in stands disturbed by a hurricane in Piska Forest in 2002
Autorzy:
Sławski, M.
Powiązania:
https://bibliotekanauki.pl/articles/990978.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Piska
tereny pohuraganowe
ekosystemy lesne
regeneracja
drzewostany pohuraganowe
zmiany skladu gatunkowego
stopien pokrycia terenu
disturbance
windthrow
regeneration
szast protected forest
Opis:
Comparison of understory of stands disturbed by hurricane and managed ones allowed to distinguish two phases that include degenerative and regenerative changes. In the first phase, which lasted about 6 years, following processes were observed: chaotic changes in species composition, invasion of exogenous species, increase in cover of Deschampsia flexuosa and Vaccinium vitis−idaea, decrease in moss cover and Vaccinium myrtillus as well. In the second phase changes had opposite direction. Structure of ground flora typical to Scots pine forest was slowly developing. Increasing shade of forest floor, caused by growing shrub layer and regeneration of tree species, was a key factor of the regeneration process.
Źródło:
Sylwan; 2014, 158, 09; 661-668
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie zespołów ryb w małych rzekach położonych na terenach zalesionych i niezalesionych
Diversity of fish fauna in small rivers located in forested and non-forested areas
Autorzy:
Rechulicz, J.
Płaska, W.
Powiązania:
https://bibliotekanauki.pl/articles/989259.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tereny lesne
tereny niezalesione
zlewnie rzek
cieki wodne
rzeki
fauna
ryby
bogactwo gatunkowe
wskazniki roznorodnosci
zageszczenie zwierzat
ichthyofauna
species richness
streams
habitat
forest catchment basin
Opis:
The knowledge on the ichthyofauna community in forest complexes in our country is mainly limited to few information on fish species found in rivers and reservoirs located in the protected areas. Hence, the aim of present study was to evaluate the importance of forested and non−forested areas, which include small rivers, on the occurrence of fish communities. The main criteria of evaluation were species richness, biodiversity and density of fish from rivers located in forested and non−forested areas in Roztocze and Puszcza Solska (south−eastern of Poland). The 12 study sites in the two groups of small rivers located on forested and non−forested areas were chosen (tab. 1). The control fishing was performed by electrofishing using IUP−12 gear. The total of 779 individuals of fish and lamprey belonging to 22 species were caught during the study. In the sections of rivers located in non−forested areas we noted 18 species, while in the rivers in forested areas – 16 ones. The analysis of the abundance domination showed that the dominant species in the rivers sections on non−forested areas were perch, roach and gudgeon, while in rivers located in forested areas: gudgeon, dace and brown trout. Simultaneously, in abundance of fish fauna from rivers in forested area a significant share of eastern sculpin, burbot and European brook lamprey were noted. The fish communities from both habitats showed similar values of biological diversity indices, but slightly higher density was observed in the rivers located in non−forested areas. The fish species composition was highly dependent on the close surroundings of the watercourse and the type of riparian zone. For the habitats from river located in non−forested areas the common, associated with aquaculture and also invasive fish species were characteristic. However, in the rivers in wooded areas, the typical for small streams and the rheophilic fish species were more frequent. The results of present study showed, that the largest differences in the dominance in fish structure and indicators of fidelity to the habitat preferences between the groups of rivers were determined.
Źródło:
Sylwan; 2016, 160, 04; 344-352
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Określenie rozdzielczości przestrzennej wielospektralnych zdjęć satelitarnych optymalnej do detekcji martwych drzew na obszarach leśnych
Determining the spatial resolution of multispectral satellite images optimal to detect dead trees in forest areas
Autorzy:
Pluto-Kossakowska, J.
Osińska-Skotak, K.
Stereńczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/989024.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
teledetekcja
lasy
Beskid Zywiecki
Nadlesnictwo Ujsoly
tereny lesne
drzewa martwe
detekcja
zdjecia satelitarne
zdjecia wielospektralne
rozdzielczosc przestrzenna
vhr image
vegetation index
multispectral analysis
image classification
Opis:
The mainstream of remotely sensed methodology for identifying the tree stand condition is based on spectral responses registered by a multispectral sensor as a digital image. The changes in spectral properties are caused by dying leaves, needles or whole trees. In further steps, the relationship between the spectral values (radiometry) registered in a multispectral satellite image and the health condition of trees should be determined. The most frequent situation includes the one whem dying stand (sensu single tree) occupies the area of <5 m². Therefore the remotely sensed data for determining sanitary conditions of trees must be of a very high spatial resolution (e.g. WorldView2 or 3, GeoEye−1, Pleiades) on one hand and at the same time favourable for the vegetation studies, i.e. utilizing suitable spectral bands and be of low acquisition cost (e.g. RapidEye, LANDSAT−7, ETM +, LANDSAT−8 OLI). Thus a compromise between spatial and spectral resolution should be found to answer the question at what resolution it is possible to clearly separate the damaged tree. The scope of the research included testing of selected methods of satellite image processing and analysis in terms of defining the optimal spatial resolution, which was performed on simulated images obtained for the area of the Beskidy Mountains (S Poland). Pixel size on simulated images was downgraded to the size corresponding to the currently functioning satellite systems. Consequently the obtained material for comparison was free from influence of external factors such as the differences in: time and weather conditions, the geometry of satellite image acquisition, light at the surface of the treetops and phenological vegetation. For each image we used vegetation indices (NDVI and GDVI) and supervised classification. These tests and the obtained results allowed to draw conclusions about the optimal satellite image resolution that can be used to detect damaged or dead stands.
Źródło:
Sylwan; 2017, 161, 05; 395-404
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiennosc zawodnienia terenow lesnych w Obszarze Gorniczym Szczyglowice
Autorzy:
Plewniak, J.
Powiązania:
https://bibliotekanauki.pl/articles/813581.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zawodnienie
tereny lesne
obnizenia poeksploatacyjne
prognozowanie
Obszar Gorniczy KWK Szczyglowice
lesnictwo
Nadlesnictwo Rybnik
Źródło:
Sylwan; 1997, 141, 10; 97-110
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plonowanie sosny zwyczajnej [Pinus sylvestris L.] na obszarach zanieczyszczonych przez emisje przemyslowe
Autorzy:
Palowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/818962.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
emisje przemyslowe
drzewostany sosnowe
zanieczyszczenia przemyslowe
nasiona
tereny przemyslowe
plonowanie
sosna zwyczajna
lesnictwo
Pinus sylvestris
drzewa lesne
Źródło:
Sylwan; 1998, 142, 12; 103-109
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jakość surowca sosnowego pochodzącego z terenów rekultywowanych dla leśnictwa na przykładzie zwałowiska odpadów po wydobyciu siarki w Piasecznie
Quality of Scots pine wood on the lands reclaimed for forestry - spoil heap after the exploitation of sulphur in Piaseczno case study
Autorzy:
Pająk, K.
Michalec, K.
Wąsik, R.
Kościelny, M.
Powiązania:
https://bibliotekanauki.pl/articles/989265.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tereny przemyslowe
Kopalnia Siarki Piaseczno
zwalowiska odpadow
zwalowiska zewnetrzne
rekultywacja lesna
drzewa lesne
sosna zwyczajna
Pinus sylvestris
drewno sosnowe
jakosc drewna
quality
raw wood
reclamation
wood defects
pinus sylvestris
Opis:
The research was conducted on the external spoil heap of the 'Piaseczno' Sulphur Mine (southern Poland). This paper aimed to determine the quality of wood in 40−year−old Scots pine trees planted onto the external spoil heap of the mine, in the scope of forest reclamation, depending on the soil substrate and employed reclamation treatments. The investigations were carried out at one−are circular trial plots. A total number of 17 study plots was established, located on: Quaternary loose sands (PL), mixed Quaternary sands and Tertiary Krakowieckie clays (PI), and mixed Quaternary sands and Tertiary clays after an intense initial fertilisation (PIN). Measurements performed at the study plots included determination of diameter at breast height of every tree with a diameter ≥7 cm and height of every tree. We classified the wood of standing trees, including a specification of class or quality and dimension group of the butt−end part of the trunk, identifying types and variants of defects that determined the results of quality classification of raw wood. We found significant differences in trees dimensions between soil substrates. No significant difference was found for fertilised substrates, therefore it may be assumed that fertilising of more fertile soils was an unnecessary treatment. The quality of pine wood was mostly affected by knots and curvatures. An impact of knots on the results of wood classification increased with fertility of soil substrate. With regard to curvatures, the opposite trend was recorded. The frequency of occurrence of the above−mentioned defects was determined not only by the habitat type, but also by the manner of forest management. To reduce the frequency of occurrence of the defects in question in the reclaimed areas, an appropriate closure of stands should be maintained and adequate tending treatments should be performed competently and skilfully, as this is done in commercial stands.
Źródło:
Sylwan; 2016, 160, 04; 284-291
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zróżnicowanie izolatów Phytophthora plurivora z czterech rzek przepływających przez tereny leśne
Occurrence and differentiation of Phytophthora plurivora isolates detected from four rivers running through forest areas
Autorzy:
Orlikowski, L.B.
Trzewik, A.
Ptaszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/1006250.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tereny lesne
rzeki
rzeka Korabiewka
rzeka Okrzesza
rzeka Rawka
rzeka Zwierzynka
woda
mikroorganizmy
grzyby
Phytophthora plurivora
izolaty grzybowe
zroznicowanie genetyczne
wystepowanie
chorobotworczosc
phytophthora plurivora
occurrence
colonization
genomic diversity
Opis:
Phytophthora plurivora was isolated from 4 rivers running through forest areas independently from detection period. All isolates colonized rhododendron leaf blades, but necrosis spread faster when cultures obtained from October to December were used for plant tissues inoculation. Obtained results showed genomic diversity of P. plurivora isolates. The level of genetic similarity between them varied from 54 to 94%. No correlation between genetic differentiation and pathogenicity of tested isolates was found.
Źródło:
Sylwan; 2012, 156, 11; 819-824
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toponimy leśne na wojskowych mapach topograficznych z okresu PRL
Forest toponyms on the military topographic maps from the PRL period
Autorzy:
Olenderek, T.
Powiązania:
https://bibliotekanauki.pl/articles/994859.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
toponimia
tereny lesne
mapy topograficzne
nazwy miejscowe
Panstwowy Rejestr Nazw Geograficznych
Polska
forest toponym
topographic map
national register of the geographical names
Opis:
The article describes the problems of the names related to forestry, which are presented on topographic maps. The list of forest toponyms prepared basing on 1:50000 military maps from the PRL period is presented. The names on the list are compared with ones from the National Register of the Geographical Names.
Źródło:
Sylwan; 2012, 156, 12; 923-929
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura grubości wybranych drzewostanów sosnowych wzrastających na zrekultywowanych dla leśnictwa obiektach pogórniczych
Diameter structure of selected pine stands growing on post-mining sites reclaimed for forestry
Autorzy:
Ochał, W.
Pająk, M.
Pietrzykowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1009479.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
tereny pogornicze
zwalowiska pogornicze
wyrobiska gornicze
rekultywacja lesna
drzewostany sosnowe
cechy taksacyjne
drzewa lesne
sosna zwyczajna
Pinus sylvestris
struktura grubosci
rozklad statystyczny
diameter structure
scots pine
normal distribution
rehabilitated land
poland
Opis:
The paper presents the results of the research on tree diameter structure in Scots pine (Pinus sylvestris L.) stands growing on mine dumps and pits reclaimed for forestry. The diameter structure of stands was characterised using statistical concentration and dispersion measures and compared with five theoretical distributions: beta, gamma, logarithmic−normal, normal and Weibull's. The studies were conducted in eight pine stands in age classes I (below 20) and II (21−40) age classes growing on the rehabilitated areas of the Bełchatów, Piaseczno, Szczakowa and Smolnica mines.
Źródło:
Sylwan; 2010, 154, 05; 323-332
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inwentaryzacja i ocena stanu upraw rosnacych na terenie bylego poligonu wojskowego "Borne Sulinowo"
Autorzy:
Nowakowska, J.
Sosnowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/818317.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
inwentaryzacja
lesnictwo
tereny popoligonowe
uprawy lesne
Nadlesnictwo Borne Sulinowo
Źródło:
Sylwan; 2000, 144, 08; 83-92
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regulowanie stanu prawnego nieruchomości Lasów Państwowych wykorzystywanych na cele nieleśne
Regulation of the legal status of the State Forests National Forest Holding real estates used for non-forest purposes
Autorzy:
Nowak, A.
Nowak, M.
Kowalczyk, C.
Powiązania:
https://bibliotekanauki.pl/articles/973529.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
stan prawny
regulacja prawna
tereny inwestycyjne
Państwowe Gospodarstwo Leśne Lasy Państwowe
nieruchomości
wyłączenie gruntów leśnych
wyłączenie z produkcji
zmiana przeznaczenia gruntów na cele nieleśne
forest property
legal status
public forests
management
Opis:
Forest land administered by the State Forests, National Forest Holding is sometimes used for non−forest purposes, i.e. for recreation centres, hotel service facilities or for public roads. Some of this land is developed with buildings or facilities constructed by tenants and is used by them. The paper describes the problem of evaluating the legal status of such land with regard to the ownership, Land and Property Register data, permitted use in the local plan and exclusion of the land from forest use. The case study is based on the example of the Elemis Recreation Centre located in Stare Jabłonki, Ostróda commune, whose land is administered by the Stare Jabłonki Forest District. The performed analysis defined actions leading to the organising of the legal status of such facilities. These actions include: separation of plots with different types of use, ordering the status of the register by updating the type of use, exclusion of the forest land from production, updating the local zoning plan, land development legalization.
Źródło:
Sylwan; 2015, 159, 02; 103-108
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 41

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