Temat: thinning - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wpływ trzebieży na zróżnicowanie strukturalne drzewostanów sosnowych
Autorzy:: Brzeziecki, B.
Powiązania:: https://bibliotekanauki.pl/articles/1022073.pdf
Data publikacji:: 2005
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: drzewostany sosnowe
zroznicowanie
program BWINPro
trzebieze
lesnictwo
struktura drzewostanu
bwinpro program
diameter differentiation
diameter distribution
dominance index
scots pine
stand
structure
thinning
Opis:: The impact of two different kinds of thinning on structural diversity of pure, even−aged Scots pine stand, is analysed. The real thinning, performed in the field, is compared with simulated computer thinning. Both thinnings make use of the same set of future (elite) trees, but differ in respect to method of marking of trees for removing. To determine the impact of thinning mode on stand structure, the overall diameter distributions, as well as some structural indices (diameter differentiation, dominance index, contagion index), before and after thinnings, are analysed and compared.
Źródło:: Sylwan; 2005, 149, 10; 11-19
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Wpływ ogłowienia i przerzedzenia na wzrost grabu (Carpinus betulus L.) w młodniku dębowym (Quercus petraea (Matt.) Liebl.)
Influence of decapitating and thinning on growth of hornbeam (Carpinus betulus L.) in the oak (Quercus petraea (Matt.) Liebl.) thicket
Autorzy:: Andrzejczyk, T.
Brzeziecki, B.
Szeligowski, H.
Powiązania:: https://bibliotekanauki.pl/articles/979514.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
hodowla lasu
drzewostany mieszane
drzewostany grabowo-debowe
mlodniki
grab pospolity
Carpinus betulus
zabiegi pielegnacyjne
przerzedzanie
oglawianie
wzrost roslin
przyrost wysokosci
przyrost piersnicy
interspecific competition
pre−commercial thinning
decapitating
mixed stand
Opis:: The aim of this study was to quantify 4−year growth and increment of 11− to 15−year−old, artificially regenerated hornbeam (Carpinus betulus L.) playing the role of the tending (nursery) species in the oak stand of the same age, after the silvicultural treatments aimed at reducing its competition against the oak. The study included three types of experimental treatments: decapitating of all hornbeam trees (OG), schematic reduction of hornbeam density (R50, removal of every second hornbeam in a row) and control (K, without treatment). The trial stand is located in Rogów (51.827023° N, 19.922315° E) and was established in 2004 on a moderately fertile site. The experiment was carried out in the spring 2013 (9 years after planting). Height and breast height diameter (dbh) of trees were measured every two years. During the study period, the height increment of decapitated trees was significantly larger than in R50 and K variants, while the dbh increment of trees in R50 variant was significantly larger than in K and OG variants. The height increment of hornbeam in R50 and OG variant and the dbh increment in R50 variant were positively correlated with height and diameter of trees before the treatment, while the dbh increment after decapitating was negatively correlated with tree dimensions before treatment. The decapitating treatment reduced the competitive ability of hornbeam more effectively than the schematic thinning removing 50% of hornbeam trees. After 4 years in the first case, oaks were on average 1 m higher than hornbeams, and in the second case, there was an opposite situation. In order to improve the effectiveness of the thinning treatment, a selective cutting should be performed (removal of the largest hornbeams), and in order to slow down the regeneration of hornbeams after decapitating, the treatment should be carried out during the top of the growing season.
Źródło:: Sylwan; 2019, 163, 03; 179-187
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Wpływ trzebieży przerębowej na zróżnicowanie strukturalne drzewostanu
Autorzy:: Bilski, M.
Brzeziecki, B.
Powiązania:: https://bibliotekanauki.pl/articles/1022233.pdf
Data publikacji:: 2005
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: dominacja wymiarowa
rozklad piersnic
trzebiez przerebowa
lesnictwo
struktura drzewostanu
rozmieszczenie przestrzenne
drzewa lesne
drzewostany jodlowe
abies alba mill.
angle measure index
bwinpro model
differentiation thinning
diameter distribution
diameter spatial diversity
liocourt−meyer curve
spatial pattern
stand structure
Opis:: The impact of differentiation thinning on various aspects of structure of exemplary Silver fir stand, including overall diameter distribution, diameter spatial diversity, dimension dominance and spatial distribution pattern, is analysed. Comparison of empirical diameter distribution (before and after thinning) with a the−oretical Liocourt−Meyer curve and the results of structural analysis, lead to the general conclusion that in case of relatively simple−structured Silver fir stands, achieving a desired, plenter−like structure is a longterm process, requiring a lot of consistency and patience.
Źródło:: Sylwan; 2005, 149, 04; 21-33
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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