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Wyszukujesz frazę "forest complex" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Wpływ fragmentacji kompleksów leśnych na dokładność określania powierzchni lasów na przykładzie województwa łódzkiego
Impact of forest complexes fragmentation on accuracy of forest area evaluation on an example of Lodz voivodeship
Autorzy:
Budniak, P.
Jabłonski, M.
Zięba, S.
Powiązania:
https://bibliotekanauki.pl/articles/979213.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
fragmentacja lasow
powierzchnia lasów
kompleksy leśne
leśnictwo
woj.łódzkie
forest complex
fragmentation
land use
Opis:
Every year official data on forest area in Poland is published by the Statistics Poland. Some of this data is based on land use information contained in the Land and Property Registry (LPR). The aim of this study was to examine compliance between forest areas obtained from official land use maps and from aerial photos. Another purpose was to investigate the impact of forest complexes fragmentation on the accuracy of forests area evaluation, using land use data. The Łódź voivodeship was selected as the study area and 280 sample plots (1 km2) were established in systematic 8×8 km grid on aerial photos. Forest areas were manually inventoried using GIS software and compared with LPR maps. In the next step inventoried forests were combined into complexes using spatial analysis. The results from this study demonstrate that 3,4% of the Łódź voivodeship is covered by forest vegetation on lands not recorded as a forest in the LPR. Therefore real value of forest area is possibly higher than those based upon data published by Statistics Poland. Additionally, the part of lands with forest vegetation not recorded as a forest in LPR in total forest area has a statistical relationship with forest complex fragmentation. Much of inventoried forest complexes (41%) officially are not considered as such because of different land use record in LPR. However, our research shows that most of them (given area not the number of objects) is located in forest complexes partly recorded in LPR with correct land use record.
Źródło:
Sylwan; 2020, 164, 02; 142-150
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowa koncepcja określania działki ewidencyjnej dla gruntów w zarządzie PGL Lasy Państwowe
New concept of registered parcel determination for areas in the property of the State Forests National Forest Holding
Autorzy:
Brach, M.
Karaszkiewicz, W.
Olenderek, H.
Ostrowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/989941.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
grunty lesne
ewidencja gruntow
dzialki ewidencyjne
dzialki lesne
compartment
forest complex
forest digital map accuracy
land registry
Opis:
The registered parcel can be explained as continuous part of land within a subdistrict. It has to be also homogeneous legally and separated from other objects by the boundary lines. In the spatial structure of the State Forests National Forest Holding the registered parcel correspond to a forest compartment. The paper presents new approach to registered parcel definition, which can store more than one forest compartment (forest complex). In this way it is possible to create new basic area object as a base for cadastre (land registry) within the forest district. The aim of this study was to assess positioning accuracy of the boundary marker and the area of registered parcel. The measurements were conducted on stabilized boundary markers within forest complex and not−stabilized boundary markers within forest compartments. Using surveying technology the network of polygonal traverses were created. The control points for every travers line were measured by geodetic class GNSS receiver. It was assumed that all measured coordinates are free from error, so it was possible to asses registered parcel positioning errors. These errors are ±3.96 m for not−stabilized boundary markers and ±0.43 m for stabilized boundary markers. Applying the new idea, all existing forest compartments were joint into one big parcel within forest complex. The total number of parcels was reduced from 988 to 335. Based on formula [4] the area of parcels was calculated in two variants: considering their existing borders (not−stabilized boundary markers) and considering merged parcels (stabilized boundary markers). For the previous, the average error of parcel area equals to 1348 m² (26−6606, standard deviation=814 m²). In the latter variant, the average error of parcel area is much lower and equals 147 m² (5−3008, standard deviation=293 m²). The final results prove that new concept for basic area objects is justified and should be gradually implemented in the State Forests. This idea will not only facilitate forest management, but increase accuracy of borders positioning and simplify land registry as well.
Źródło:
Sylwan; 2015, 159, 11; 883-892
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modele struktury grubości w dwu- i wielopiętrowych drzewostanach z udziałem jodły Abies alba Mill. i buka Fagus sylvatica L.
Models of diameter structure in two- and multi-storied stands with fir Abies alba Mill. and beech Fagus sylvatica L.
Autorzy:
Pach, M.
Podlaski, R.
Powiązania:
https://bibliotekanauki.pl/articles/989729.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany mieszane
struktura grubosci
drzewostany dwupietrowe
drzewostany wielopietrowe
jodla pospolita
Abies Alba
buk zwyczajny
Fagus sylvatica
rozklad piersnic
rozklad Weibulla
rozklad mieszany
tree diameter modelling
forest complex structure
weibull mixture model
Opis:
The objectives of the study were (1) to determine the models of diameter at breast height (dbh) distributions in two− and multi−storied mixed stands with fir Abies alba Mill. and beech Fagus sylvatica L. as well as (2) to assess the usefulness of single Weibull distribution and two−component mixture of Weibull distribution to approximation of empirical dbh distributions for distinguished models of dbh structures. In the Świętokrzyskie Mountains, 21 sample plots ranging in size from 0.2 to 0.4 ha were established. To identify the models of dbh distributions, in two− and multi−storied stands with similar empirical dbh distributions, the hierarchical cluster analysis (HCA) with the Jaccard's measure and the Ward's minimum variance agglomeration method were used. To approximate dbh distributions, the single Weibull distribution and the two−component mixture of Weibull distribution were employed. In two− and multi−storied mixed stands with fir and beech, with the mean age between 50 and 70 at the dbh, four models of dbh distributions were determined (fig. 1). Two of them were decreasing, strongly asymmetric (OS and OJ models; fig. 2) and the other two were increasing in the initial phase and decreasing in the final, having two maximums (DM1 and DM2 models; fig. 3). In the stands with the complex structure mixed distribution should be used to approximate empirical data. The analysis revealed high suitability and versatility of Weibull distribution both as single form and two−component mixture.
Źródło:
Sylwan; 2015, 159, 08; 632-638
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gospodarka łowiecka w Leśnym Kompleksie Promocyjnym w Beskidzie Sądeckim
Game management in the Forest Promotional Complex in Beskid Sadecki
Autorzy:
Kubacki, T.
Tomek, A.
Wajdzik, M.
Powiązania:
https://bibliotekanauki.pl/articles/1015701.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
pozyskanie lowieckie
wystepowanie
zwierzeta lowne
lowiectwo
gospodarka lowiecka
obszary przygraniczne
lesne kompleksy promocyjne
lesnictwo
Beskid Sadecki
zagospodarowanie lowisk
liczebnosc
„lasy beskidu sądeckiego” forest promotional complex
game management
Opis:
Forest promotional complexes are one of the organised forms of nature protection over an extensive area allowing a concurrent modern game management, especially with regard to animal species exhibiting a dynamic mode of life (red deer, roe deer, wild boar). The paper presents a faunistic analysis of the "Lasy Beskidu Sądeckiego" Forest Promotional Complex established in 2004. In the analyses, the silvicultural−game management plans for the years 1996−2005 were used.
Źródło:
Sylwan; 2007, 151, 08; 64-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametry populacyjne jelenia szlachetnego (Cervus elapus L.) w Leśnym Kompleksie Promocyjnym ?Lasy Mazurskie? Część I. Ocena masy poroża i masy tuszy byków pozyskanych w wyniku odstrzałów selekcyjnych
Red deer [Cervus elaphus L.] population parameters in the 'Lasy Mazurskie' Forest Promotional Complex. Part I. Evaluation of antlers and body weight of stags shot in selection culls
Autorzy:
Czyżyk, P.
Żurkowski, M.
Ciepluch, Z.
Struziński, T.
Czajka, W.
Powiązania:
https://bibliotekanauki.pl/articles/1015868.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lowiectwo
poroze
lesnictwo
jelen europejski
zwierzeta lowne
odstrzal selekcyjny
masa tuszy
Lasy Mazurskie
lesne kompleksy promocyjne
tusze jelenie
tusze zwierzece
Cervus elaphus
byki
red deer (cervus elaphus l.)
stag selection
stag quality
„lasy mazurskie” forest promotional complex
poland
Opis:
The aim of the research was to determine the effect of the red deer stag structural selection carried out over the period of 12 years in the Piska Primeval Forest. The research covered 2538 stags shot in the territory of 4 Forest Districts. The parameters like stag age as well as antlers and body weight were analysed.
Źródło:
Sylwan; 2007, 151, 09; 41-50
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie modelu macierzowego do prognozowania rozwoju drzewostanów o złożonej postaci
Application of matrix model for projecting the development of stands with complex structure
Autorzy:
Drozdowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1019340.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany
wykorzystanie
modele macierzowe
prognozowanie
lesnictwo
modele matematyczne
rozwoj drzewostanu
forest modelling
linear and non−linear programming
stand with complex structure
silvicultural planning
Opis:
In this study, the principles of building, parameterisation and validation of matrix models of stands are presented. Three basic processes occurring in stand development such as regeneration, growth and dieback of trees are discussed. The study points out to the potential advantages and directions of application of stand matrix models in solving silvicultural problems.
Źródło:
Sylwan; 2006, 150, 02; 3-13
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka ekologiczno-wskaźnikowa zgrupowań biegaczowatych (Carabidae) w ogniskowo-kompleksowej metodzie ochrony lasu
Ecological-indicatory characteristics of Carabidae communities in centre-complex method of forest protection
Autorzy:
Tarwacki, G.
Powiązania:
https://bibliotekanauki.pl/articles/1008429.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ochrona lasu
metoda ogniskowo-kompleksowa
remizy lesne
fauna
owady
zgrupowania zwierzat
biegaczowate
Carabidae
grupy troficzne
grupy ekologiczne
grupy geograficzne
carabidae
pine forest
habitat island
mib
centre−complex method
Opis:
In the study, the influence of remises (forest plots of high biodiversity) on abundance of Carabidae assemblages is presented. Results were analysed using ecological indices as well as bioindicators. It was obtain that the development of Carabidae is going faster in remises than on control plots (forest around remises). The forest species and large zoophages were more frequent in remises than on control plots.
Źródło:
Sylwan; 2012, 156, 09; 684-694
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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