- Tytuł:
-
Modele bonitacyjne dla gatunków lasotwórczych Polski opracowane na podstawie tablic zasobności
Site index models for forest-forming tree species in Poland developed basing on the yield tables - Autorzy:
-
Socha, J.
Ochał, W.
Grabczyński, S.
Maj, M. - Powiązania:
- https://bibliotekanauki.pl/articles/989707.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polskie Towarzystwo Leśne
- Tematy:
-
lesnictwo
drzewa lesne
gatunki lasotworcze
modele wzrostu
siedliska lesne
modele bonitacyjne
wskazniki bonitacji
site index
site index model
height growth models - Opis:
- The objectives of this work was to develop a site index models for main forest−forming tree species in Poland based on data from published yield tables. The research material include growth series of birch, European beech, common oak, red oak, European hornbeam, European ash, Norway maple, small−leaved lime, black alder, trembling aspen, locust, Douglas fir, silver fir, European larch, Scots pine, and Norway spruce. Six algebraic difference models were preliminary selected for the construction of site index model. When selecting a potential models an assumption was made, that the index system should be characterized by good fit to the empirical data, polymorphism, variable asymptotes for different sites and equality of the site index and height at a certain base age. To estimate parameters of individual models all possible combinations among height−age pairs for each tree were used. The selection of the best model was based on fit criteria describing: proportion of variance explained, error range and standard deviation of the residuals. Best fitting model was selected basing on the sum of ranks from individual criteria and for each individual tree species a separate model was selected, which fits the best growth series from the yield tables. For 16 out of 19 species, the best fit statistics were demonstrated by the model developed on the base of the function [2]. Developed models may be used both in forestry practice and forestry research in order to estimate site index for analyzed tree species.
- Źródło:
-
Sylwan; 2015, 159, 08; 639-649
0039-7660 - Pojawia się w:
- Sylwan
- Dostawca treści:
- Biblioteka Nauki
Artykuł