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Wyszukujesz frazę "drzewostany dębowe" wg kryterium: Temat


Wyświetlanie 1-13 z 13
Tytuł:
Przydatność dębowych zrębków z całych drzew do przerobu na płyty pilśniowe twarde
Usefulness of oak chips of whole trees for conversion into hartboards
Autorzy:
Gornowicz, R.
Jablonski, K.
Rozanski, H.
Powiązania:
https://bibliotekanauki.pl/articles/813130.pdf
Data publikacji:
1991
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany debowe
dab
zrebki drzewne
zrebki debowe
wykorzystanie
przydatnosc technologiczna
plyty pilsniowe twarde
Źródło:
Sylwan; 1991, 135, 11
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Witalnosc wybranych drzewostanow debowych na potrzeby monitoringu stanu zdrowotnego
Autorzy:
Siwecki, R.
Ufnalski, K.
Ratajczak, M.
Powiązania:
https://bibliotekanauki.pl/articles/815666.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
witalnosc
drzewostany debowe
metody badan
stan zdrowotny lasu
Quercus
lesnictwo
dab
drzewa lesne
Źródło:
Sylwan; 2000, 144, 04; 133-139
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kilka zagadnien zwiazanych z hodowla debu na terenie RDLP Gdansk
Autorzy:
Grus, W.
Powiązania:
https://bibliotekanauki.pl/articles/814082.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany debowe
hodowla lasu
RDLP Gdansk
Quercus
lesnictwo
dab
odnowienia naturalne
zabiegi pielegnacyjne
uprawy lesne
drzewa lesne
Źródło:
Sylwan; 1994, 138, 02; 75-85
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konsekwencje hodowlane obumierania dębów
Sylvicultural consequences of oak decline
Autorzy:
Bernadzki, E.
Grynkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1018431.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany debowe
hodowla lasu
zamieranie lasow
Quercus
lesnictwo
dab
zamieranie drzew
drzewa lesne
oak decline
stand conversion
transitional communities
Opis:
The rate of oak decline has greatly accelerated in recent years. It has been reported that in October 2005, the amount of standing dead trees in oak stands of 14 Forest District Administrations situated within the Regional Directorate of State Forests in Warsaw exceeded 70,000 m3 and an area of 103 hectares was selected where sanitary fellings need to be applied. The restocking of cut areas in the thinned stands with substitutional species was proposed. Besides, the paper presents a conception of oak regeneration by planting trees in wider spacing, under the shelter of pioneer species (mainly birch), using the tending species (i. a. hornbeam).
Źródło:
Sylwan; 2006, 150, 08; 61-69
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zdrowotności dębu na podstawie stopnia ubytku aparatu asymilacyjnego wybranych drzewostanów dębowych Nadleśnictwa Wołów
Assessment of the health condition of oak on the basis of the degree of assimilation apparatus losses in oak stands of the Wolow Forest District
Autorzy:
Szewczyk, W.
Czeryba, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1009254.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Nadlesnictwo Wolow
drzewostany debowe
drzewa lesne
dab
Quercus
stan zdrowotny drzew
aparat asymilacyjny
defoliacja
stopien defoliacji
oak
decline
defoliation
wołów forest district
Opis:
Distinct symptoms of oak decline, which occurred in the year 2004 on the area of the Wołów Forest District, prompted to determine the health condition of this species stands according to the European criteria i.e. on the basis of the defoliation degree. Oak stands in that area are exposed to the activity the Legnicko−Głogowski Copper Industry Region. Besides, the lowering of Odra riverbed, which in that area reaches 3 m, also exerts a significant effect on the functioning of the ecosystems. An estimation of the assimilation apparatus losses was carried out at the turn of July and August in 2005 and 2007 on the basis of an atlas elaborated by Borecki and Kęczyński [1992]. Data obtained in this way permitted to classify each tree into four defoliation classes from 0 to 3. In case of a dead tree, it was classified into the fifth class encoded as 4. In the first year of observation, the highest frequency (35.0%) was observed in defoliation class #2 i.e. in stands with medium damages. Class #1 included 33.6% of trees. The assessment was repeated two years later. The number of trees without defoliation symptoms decreased four times, while the number of trees with a strong defoliation and of dead trees increased.
Źródło:
Sylwan; 2010, 154, 02; 100-106
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zgrupowania wciornastków (Thysanoptera) pni drzew w różnowiekowych lasach dębowych Słowacji
Assemblages of bark-dwelling thrips [Thysanoptera] of uneven-aged oak forests in Slovakia
Autorzy:
Dubovsky, P.
Fedor, P.
Kucharczyk, H.
Masarovic, R.
Balkovic, J.
Powiązania:
https://bibliotekanauki.pl/articles/1009045.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany debowe
drzewa lesne
dab
Quercus
pnie drzew
owady
wciornastki
Thysanoptera
zgrupowania zwierzat
sklad gatunkowy
struktura zgrupowan
drzewostany roznowiekowe
Slowacja
thysanoptera
oak woods
assemblages
diversity
corticolous species
bark
Opis:
The paper refers to the research on bark−dwelling thrips (Thysanoptera) on oaks (Quercus sp.) in the area of ‘Martinský les' wood that is a rare isolated refuge of natural oak wood stands Aceri tatarici−Quercetum Zólyomi 1957 being situated in lowland close to the town Senec in SW Slovakia. Arboreal photoeclectors were used for sampling corticolous arthropods at 6 various sites during the vegetation periods 2007 and 2008 in three−week intervals. Totally 1544 specimens of 35 Thysanoptera species were collected. Six of the species: Kakothrips dentatus, Thrips calcaratus, Phlaeothrips bispinoides, Hoplothrips corticis, Megathrips nobilis and Poecilothrips albopictus were observed for the first time in Slovakia. The statistic analysis PPCA was used for finding the relation between the assemblage's species composition and the age of oak trees on researched sites.
Źródło:
Sylwan; 2010, 154, 10; 659-668
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy naturalne procesy ekologiczne w juwenilnej fazie rozwoju drzewostanu założonego sztucznie różnicują jego strukturę przestrzenną?
Do natural processes at the juvenile stage of stand development differentiate the spatial structure of trees in artificially established forest stands?
Autorzy:
Szmyt, J.
Korzeniewicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/1317220.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
ekologia lasu
drzewostany sosnowe
drzewostany debowe
wiezba poczatkowa
procesy ekologiczne
wydzielanie sie drzew
drzewa lesne
sosna
dab
rozmieszczenie drzew w przestrzeni
piersnice drzew
wysokosc drzew
dlugosc korony
spatial indices
forest diversity
self-thinning
managed forests
Opis:
Structural diversity is one of the most interesting phenomena that have been studied by forest ecologists and practitioners. Amongst the different characteristics of forest structure, spatial diversity of trees and their attributes seem to be very important. The more spatially structured a population is, the higher its diversity in terms of size and species richness. Because most forests in Europe are managed and were artificially established, they are subjected to conversion processes turning them into more complex systems. The approach presented here aims at elucidating whether natural processes, such as self-thinning, can cause the self-differentiation of spatial structure in artificially planted stands. Our analyses focused on untended Scots pine and pedunculate oak stands in the juvenile phase of development and were based on spatially explicit structural indices for positioning and size differentiation (diameter, total height and crown length). The obtained results indicate that live trees were dispersed more or less regularly. Unlike the anglebased index, which mostly indicated randomness in tree location, a distance-based index showed clear regularity. We also found that the distribution of tree attributes auto-correlates to tree location as indicated by significantly lower index values compared to values resulting from random reassignment of the examined attributes. This low degree of spatial differentiation is further confirmed by the distribution of indices in differentiation classes. Our results allow us to conclude that, in the case of light demanding species (pine and oak), natural processes do not increase spatial diversity of the stand, although, both species showed a certain degree of deviation in this respect.
Źródło:
Leśne Prace Badawcze; 2014, 75, 2; 171-179
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
Autorzy:
Kuzmiński, R.
Szewczyk, W.
Korczyński, I.
Łakomy, P.
Powiązania:
https://bibliotekanauki.pl/articles/1311485.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
tereny pokleskowe
tereny popowodziowe
drzewostany debowe
drzewa lesne
dab
Quercus
defoliacja
liscie
uszkodzenia lisci
szkodniki roslin
owady
Nadlesnictwo Wolow
flood
defoliation
Wołów Forest Division
oak die-back
pest insects
oak stands
Opis:
This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
Źródło:
Leśne Prace Badawcze; 2015, 76, 3; 297-303
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fosforyny jako czynnik ograniczający zamieranie drobnych korzeni w drzewostanach dębowych Płyty Krotoszyńskiej
Phosphites as factor limiting the fine root damage in oak stands from Krotoszyn Plateau
Autorzy:
Oszako, T.
Nowaszewski, M.M.
Szulc, W.
Rutkowska, B.
Nowakowska, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/985975.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
dab
Quercus
choroby roslin
fytoftoroza korzeni
zamieranie debow
czynniki ograniczajace choroby roslin
fosforyny
RDLP Poznan
Plyta Krotoszynska
drzewostany debowe
opryski lotnicze
oak decline
quercus robur l.
phytophthora
phosphites
rdlp poznań
Opis:
Oak decline phenomenon has been observed in Poland in the 1980s. Especially, Krotoszyn Forest District was affected in the years 1982−1984, when oaks were dying in a mass extend causing economic and ecological problems. Twenty five years later many Phytophthora species were isolated from rhizosphere soil suggesting their important role in fine root damage. This research was focused on application of fertilisers increasing oak resistance to soil−borne pathogens. In total, 60 soil samples were collected c.a. 1 meter from trunks of oaks representing control and treated variant with Actifos® and Kalex® fertilisers. The fine root parameters (smaller than 2 mm) were evaluated with the water scanner and WinRhizo software. The same soil samples were analysed for the presence of macro− (N, P, K, Ca, Mg) and microelements (Al, Cu, Fe, Mn, Na, Zn). The use of ammonium and potassium phosphites in the form of foliar spray had a beneficial effect on the health of oak stands (Quercus robur L.) in the Krotoszyn Forest District. Three parameters: defoliation (ICP Forest), vitality according to Roloff method and synthetic index of damage were applied in order to evaluate the status of oaks health. Two aforementioned crown parameters were obtained from visual assessment from the ground, while the synthetic index of damage was calculated according to the formula developed by Dmyterko and Bruchwald. The parameters of fine roots after treatments, especially their number, length and surface improved. Trees with better quality fine roots had more chance to survive in unfavourable environmental conditions like drought. Phosphite treatments of oak stand positively influenced the chemical properties of soil, decreased acidity, but increased availability of Zn for plants, and probably reduced root damage by toxic aluminium ions. An improvement in the health of fine roots (that were saved by phosphites from damage caused by pathogenic species of Phytophthora genus present in the soil) will have a positive effect on the reconstruction of crown architecture (shoots development from dormant buds).
Źródło:
Sylwan; 2018, 162, 10; 819-827
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przyczyny masowego zamierania drzewostanów dębowych
Causes of oak stand decline
Autorzy:
Oszako, T.
Powiązania:
https://bibliotekanauki.pl/articles/1016238.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
metabolizm roslin
czynniki fizjologiczne
szkodniki roslin
lesnictwo
Quercus
zamieranie lasow
drzewostany debowe
czynniki chorobotworcze
grzyby
dab
stres srodowiskowy
szkodniki wtorne
drzewa lesne
forest dieback
environmental stress
physiological change
metabolism
fungal infection
secondary pest
Opis:
Agents causing damage to plant organisms like drought, folivore feeding, fungal pathogens, ground frosts have no significant effect on tree mortality if they occur individually, however their concurrent occurrence may lead to mass dieback of trees on a local scale. Changes in cell biochemistry of trees under the impact of stress factors enable development of fungal infections or facilitate insect attacks. This study presents examples of interactions between physiological changes (e.g. in production of enzymes, phenolic compounds, etc.) determining host plant resistance and pathogen or pest responses to these changes.
Źródło:
Sylwan; 2007, 151, 06; 62-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza wybranych cech przestrzeni wzrostu pojedynczego drzewa na przykładzie 135-letniego drzewostanu dębowego
Analysis of selected features of the growth space of a single tree on the example of a 135 years old oak stand
Autorzy:
Kaźmierczak, K.
Stosik, M.
Powiązania:
https://bibliotekanauki.pl/articles/1013435.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
dendrometria
przestrzen wzrostu
klasy Krafta
lesnictwo
Quercus
szerokosc korony
procent wykorzystania jednostkowego pola
drzewostany debowe
przestrzen pojedynczego drzewa
powierzchnia rzutu korony
wysokosc drzew
dab
piersnice drzew
drzewa lesne
growth space
crown projection area
oak
Opis:
The paper presents the results of an analysis of the features of the growth space of a single tree in a 135 years old oak stand. The following measures of the growth space of a tree were selected and determined: crown projection area – pk [m2], crown diameter – dk [m], Seebach's growth space number (also called the crown deflection degree) – dk/d1,3, crown projection area to basal area ratio – d 2 k /d 2 1,3, space use degree – r/s, space of a single tree – ppd=pk·h [m3], crown spread (crown deflection coefficient) – dk /h and percentage use of a unit area – pwjp=100·pk /pj [%]. Also the biosocial position of each tree was determined.
Źródło:
Sylwan; 2008, 152, 02; 3-9
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-13 z 13

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