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Tytuł:
Wielkopowierzchniowa metoda okreslania stopnia uszkodzenia drzewostanow debowych i bukowych
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/969372.pdf
Data publikacji:
2000
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
uszkodzenia drzewostanow
witalnosc
defoliacja
syntetyczny wskaznik uszkodzenia
drzewostany bukowe
drzewostany debowe
metody badan
metoda wielkopowierzchniowa
lesnictwo
Źródło:
Prace Instytutu Badawczego Leśnictwa. Seria A; 2000, 3[900-904]; 17-33
0369-9870
Pojawia się w:
Prace Instytutu Badawczego Leśnictwa. Seria A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda okreslania ryzyka uszkodzenia drzewostanu przez wiatr
The method of determining risk of wind damage to tree stands
Autorzy:
Bruchwald, A.
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/45318.pdf
Data publikacji:
2010
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
wiatry
szkody w lesie
drzewostany
ryzyko uszkodzenia
obliczenia
modele ryzyka uszkodzenia
Źródło:
Leśne Prace Badawcze; 2010, 71, 2; 165-173
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody okreslania stopnia uszkodzenia drzewostanow bukowych i ich weryfikacja
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/817467.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
witalnosc
uszkodzenia drzewostanow
defoliacja
syntetyczny wskaznik uszkodzenia
drzewostany bukowe
lesnictwo
Źródło:
Sylwan; 2000, 144, 05; 49-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model wzrostu dla modrzewia europejskiego (Larix decidua Mill.) wykorzystujący cechy taksacyjne drzewostanu
A growth model for European larch (Larix decidua Mill.) based on stand characteristics
Autorzy:
Bruchwald, A.
Dmyterko, E.
Wojtan, R.
Powiązania:
https://bibliotekanauki.pl/articles/45680.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewostany modrzewiowe
bonitacja drzewostanow
rozklad piersnic
modrzew europejski
Larix decidua
modele wzrostu
Źródło:
Leśne Prace Badawcze; 2011, 72, 1
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stopień uszkodzenia świerka, jodły i modrzewia w Sudetach Zachodnich
Degree of damage to spruce, fir and larch stands in the Western Sudetes
Autorzy:
Korzybski, D.
Mionskowski, M.
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/993196.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy gorskie
drzewostany swierkowe
drzewostany jodlowe
drzewostany modrzewiowe
drzewa lesne
swierk
Picea
jodla
Abies
modrzew
Larix
uszkodzenia drzew
stopien uszkodzenia
defoliacja
stopien defoliacji
zywotnosc
stan wierzcholka drzewa
Nadlesnictwo Kamienna Gora
Nadlesnictwo Szklarska Poreba
Nadlesnictwo Sniezka
Nadlesnictwo Swieradow
Sudety Zachodnie
tree damage index
defoliation
tree growth response
Opis:
The aim of this research was to assess damage to three important forest−forming trees species in the mountains – spruce, fir and larch, and to study their increment reaction to changing environmental conditions. Research concerned forests under the management of four forest districts located in the Western Sudetes (SW Poland). Index W ranging from 0 to 3 was used for the assessment of the damage to trees based on three crown characteristics: defoliation, top−crown condition and tree vitality. Trees of damage degree 2 dominated in each of the species; dying trees (degree 3) were also found. Total share of these two degrees of damage was ca 80% for spruce, 84% for fir and 74% for larch. Analysis of increment reaction of investigated species showed their similar response to changes in the environment. The increase in the share of trees showing positive responses and the decrease in the share of negative responses in the past half century, indicate an improvement in the growth conditions of spruce, fir and larch in Western Sudetes.
Źródło:
Sylwan; 2013, 157, 02; 104-112
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzorzec rozkładu pierśnic drzew wielowarstwowego drzewostanu jodłowego Gór Świętokrzyskich
Pattern of breast height diameter distribution in a multilayer silver fir stand in the Swietokrzyskie Mountains
Autorzy:
Bruchwald, A.
Dmyterko, E.
Łukaszewicz, J.
Niemczyk, M.
Wrzesiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/989331.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Gory Swietokrzyskie
drzewostany jodlowe
jodla pospolita
Abies alba
rozklad piersnic
metoda BDq
diameter distribution
abies alba
bdq method
Opis:
In Poland, the majority of silver fir stands is characterised by a single−layer stand structure. The current silvicultural activities aim at obtaining multilayer stands, which requires a clearer definition of the structure, and more precisely, a better knowledge of the pattern of diameters at breast height (DBH) distribution. The aim of the research was to develop a pattern of DBH distribution of trees in a multilayer silver fir stand in the Świętokrzyskie Mountains (central Poland) using the BDq method, through the mathematical determination of function parameters, including the productive capacity of the habitat. The application of this pattern will allow the selection of the management methods aimed to obtain and then maintain model stands with a different layer structure. The research was based on the empirical material collected in 56 stands that were characterized by both a single− and a multi−layered structure. They grew in coniferous forest habitats, mostly in the upland mixed coniferous forest, upland mixed deciduous forest and upland deciduous forest or mountain forest. One big (up to 1 ha) or 3−5 smaller (0.04 ha) sample plots were established in each stand in which diameters at breast height of all trees and heights of usually 25 trees, selected from the entire range of diameters, were measured. These were used to determine the height growth curve equation coefficients and then the height of each tree. For each stand the basal area was calculated and a graph for DBH distribution was prepared. Site index was established using the original empirical equation. In order to develop a model for multilayer fir stands, individual parameters of the equation 5, such as the basal area (B), the target diameter at breast height (D) and the coefficient q were to be determined using the BDq method. Taking into consideration only stands with one−tailed DBH, individual parameters of the function were found to be associated with site index. Empirical equations were developed for the determination of B and D, and, based on the DBH distribution graphs, coefficient q associated with site index was also calculated (tab.). The developed DBH distribution pattern is a mathematical description of the target fir stand. When the value of stand parameters approaches those of the model stand, it should be managed using the shelterwood cutting system, which results from the spatial variation in the stand height structure, and consequently from the need for different silvicultural treatments in different stand fragments.
Źródło:
Sylwan; 2016, 160, 09; 741-750
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody okreslania uszkodzenia drzewostanow debowych
Autorzy:
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/818660.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
uszkodzenia drzewostanow
defoliacja
drzewostany debowe
stan zdrowotny lasu
ochrona lasu
lesnictwo
metoda strukturalno-defoliacyjna
oznaczanie
metoda witalnosci drzewa
Źródło:
Sylwan; 1998, 142, 10; 29-38
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stopień uszkodzenia drzewostanów jodłowych Gór Świętokrzyskich
Degree of the damage to silver fir stands in the Swietokrzyskie Mountains
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/989225.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Gory Swietokrzyskie
drzewostany jodlowe
jodla pospolita
Abies alba
uszkodzenia drzew
defoliacja
zywotnosc drzew
abies alba
damage
defoliation
increment reaction
świetokrzyskie mountains
Opis:
The study assesses the damage to silver fir from the canopy layer in the stands of the Świętokrzyskie Mountains (central Poland) using three methods. The suitability of these methods was also analysed by calculating the correlation between increment of the diameter at breast height (DBH) and the level of damage. In total we investigated 240 trees. The first analysed method involves tree defoliation. The mean defoliation of sample accounts for 47.8%, while majority of the trees were found to be within 2nd damage class (fig. 1). Absolute and relative DBH increment does not correlate with tree defoliation strongly (tab.). The next method is based on the assessment of the average tree damage index W that takes into account defoliation, top condition and vitality. In general, analysed trees were found to have reduced height growth and both branching in the top (fig. 2) and central (fig. 3) section of the crown. Inclusion of the secondary crown in the assessment of tree damage resulted in an increase in the vitality of the whole crown (fig. 3). The assessment of damage based on index W showed that largest proportion of trees was within moderate damage and the value of the damage index was lower than in method based exclusively on defoliation. The last method (morphological−incremental) combines the method based on damage index W with DBH increment (index Wz, formula 3). In the period 1971−1985, most of the fir trees reacted negatively to the environment changes (growth reduction), while the proportion of trees with positive responses decreased. In the period 1976−2000, the proportion of trees with negative response decreased, while the proportion of firs with positive and neutral responses increased (fig. 5). The period 2001−2015 faced the dominance of trees showing neutral growth responses, the proportion of trees with positive responses was fairly high, while the proportion of trees with negative responses was the smallest. The highest value of the correlation coefficient (r=–0.661) was found for the correlation between the relative 10−years DBH growth and damage index Wz2(tab.). Of the three discussed damage assessment methods, this method is therefore considered the most accurate.
Źródło:
Sylwan; 2016, 160, 04; 299-308
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowy wariant modelu ryzyka uszkodzenia drzewostanu przez wiatr
New variant of the wind damage risk model for forest stands
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/991151.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
wiatry
lasy prywatne
szkody w lesie
drzewostany
uszkodzenia drzewostanow
ryzyko uszkodzenia
obliczenia
modele ryzyka uszkodzenia
wind damage
risk factor
private forests
Opis:
The paper presents a new variant of the wind damage risk model for forest stands in view of its application in the forests under private ownership. It was based on the following characteristics: average height, age and slenderness of the main tree species, stand density index, species composition, forest habitat type, as well as stand location in the region of the country and the volume of windbreaks, windfalls and deadwood in previous years. The latter characteristic in the new model variant is generated by the stand damage model. The new wind damage risk model variant determines the risk factor for individual stands ranging from 0 to 3. A higher value of the factor indicates a higher wind damage risk for the stand. The verification of the model was performed using the forest data from two counties (powiat) situated in the Podkarpackie Province. The wind damage risk factors obtained from the model are shown on numerical maps.
Źródło:
Sylwan; 2014, 158, 08; 571-578
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drzewostanowa metoda określania uszkodzenia jodły
Method of assessment the damage to silver fir stands
Autorzy:
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/1015683.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
uszkodzenia drzewostanow
defoliacja
wskaznik uszkodzenia drzew
metoda drzewostanowa
metody badan
lesnictwo
drzewostany jodlowe
methods of assessment the damage to stands
silver fir
Opis:
Paper presents two variants of the method of assessment the damage to the silver fir stands that were determined on the basis of the crown development. The first one is based on the tree's defoliation, the other – on the tree's damage index W that includes defoliation (feature A), condition of the tree−top (feature B) and tree's vitality (feature C). Mean defoliation or index W is used to determine one of the four classes of the stand damage. The accuracy of both variants was worked out and minimum number of sample trees required within assumed standard errors of assessed features was determined.
Źródło:
Sylwan; 2008, 152, 05; 26-33
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena rębni gniazdowej na podstawie drzewostanów uszkodzonych w lasach nizinnych Polski
Evaluation of the group cutting system on the basis of damaged forests in lowland Poland
Autorzy:
Łukaszewicz, J.
Niemczyk, M.
Dmyterko, E.
Bruchwald, A.
Powiązania:
https://bibliotekanauki.pl/articles/989687.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
przebudowa drzewostanow
rebnie gniazdowe
rebnie czesciowe gniazdowe
drzewostany nizinne
uszkodzenia drzewostanow
czynniki abiotyczne
czynniki biotyczne
group cutting system
sawtimber stand
demaged stand
Opis:
The paper compares the proportion of damaged stands managed under group cutting system (group clear cutting and group shelterwood cutting) with the analogous stands where cuts had not been performed. The empirical material came from the database of the State Forests Information System and covered all forest districts located in Polish lowlands. To evaluate the group cutting a test of differences between the fractions of the elements distinguished in the population was used. The first population involved sawtimber stands in which no group cuts had been performed in the past decade. The number of damaged stands was determined for this population and their percentage share was established. A similar procedure was applied to the second population of stands in which the group cutting was employed. A damaged stand was assumed to be one in which the volume of windbroken and windfallen trees and deadwood harvested in the past 10 years exceeded the volume set in the given formula (1). The performed analysis shows that after several years, the proportion of damaged stands in which gaps were established is significantly higher (57.2%) than in the stands without cut patches (32.9%). Stands with patches demonstrate a significant, statistically greater susceptibility to damage from abiotic and biotic factors. The proportion of damaged stands managed under the group shelterwood cutting (60%) is larger than that under the group clear cutting (55.4%). Spruce is the most vulnerable to damage, while alder − the least vulnerable. On average, the higher proportion of damaged forests, mainly pine and oak forests is in the territory of the Bialystok Regional Directorate of the State Forests (RDSF) (tab. 2) being lower in the territory of the Warsaw RDSF where damaged pine stands are more frequent (tab. 3). In areas with a high probability of damage to stands group cut should be limited, and in spruce stands – totally abandoned. Time regimes should also be established applying the group cutting by shortening the period of reconstruction of the entire forest stand.
Źródło:
Sylwan; 2015, 159, 01; 3-12
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie modelu ryzyka uszkodzenia drzewostanu przez wiatr do oceny prawdopodobieństwa lokalizacji szkód w lasach Regionalnej Dyrekcji Lasów Państwowych w Białymstoku
Application of the wind damage risk model for the assessment of the probability of the location of damage to forests of the Regional Directorate of the State Forests in Bialystok
Autorzy:
Bruchwald, A.
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/985727.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
wiatry
szkody w lesie
drzewostany
ryzyko uszkodzenia
ocena ryzyka
modele ryzyka uszkodzenia
RDLP Bialystok
wind damage risk model
wind damage risk factor
Opis:
In June 2016, a hurricane damaged the forests of the Regional Directorate of the State Forests in Białystok (eastern Poland), resulting in the removal of approximately 1.9 million cubic meters of wind−fallen and wind−broken trees and deadwood by the end of 2018. The research material was obtained from the database of the State Forests Information System and used to assess the functioning of the wind damage risk model. The wind damage risk model determines the value of damage risk factor Wr for each stand ranging from 0 to 3; a higher value indicates a higher risk of damage to the stand. The damage risk factor allowed to create six damage risk classes, with a width of 0.5 each and to assign individual stands of the forest district to one of the classes. The areal share of damaged stands was calculated for each class. In 2015, i.e. before the hurricane, the share of stands in the highest damage risk class VI ranged from 0.1% to 3.5%. After the hurricane in 2016, the areal share of damaged stands was calculated for each class, the largest share (the largest damage) being in class VI, while the share of the most damaged stands were found in the following forest districts: Dojlidy – 71%, Supraśl – 79% and Żednia – 87%. In 9 other forest districts, the area of damaged stands in class VI also exceeded 70%. The wind damage risk model for the stand presented in the paper allows identifying stands where damage is very likely to occur, when the wind comes. This may limit the level of wind damage through, in the first place, the rebuilding of stands classified to the highest wind damage risk factor class.
Źródło:
Sylwan; 2019, 163, 08; 629-636
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

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