Temat: growth dynamic - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Krzywe bonitacyjne świerka pospolitego na siedliskach górskich
Site index curves for Norway spruce on mountain habitats
Autorzy:: Socha, J.
Powiązania:: https://bibliotekanauki.pl/articles/973956.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: dendrometria
bonitacja siedliska
modele bonitacyjne
Picea abies
leśnictwo
drzewa leśne
świerk pospolity
góry
siedliska leśne
site index model
base−age invariant dynamic equation
height growth
picea abies (l.) karst.
Opis:: The aim of the study was to develop a site index model for mountain spruce stands. The research material contained the height growth data obtained from stem analysis of 95 trees. The collected material was used to calculate the parameters of four dynamic growth equations, which allowed to determine site productivity and predict height growth based on age and height of stands. The equation that best describes the height growth of the examined spruces was selected from among different solutions using statistical criteria for assessing the accuracy of fitting empirical data and biological realism. The developed model can be used to predict the height growth and determine the site index for mountain spruce stands.
Źródło:: Sylwan; 2011, 155, 12; 816-826
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Model bonitacyjny dla sosny na podstawie tablic zasobności Szymkiewicza
Autorzy:: Cieszewski, C.J.
Zasada, M.
Powiązania:: https://bibliotekanauki.pl/articles/1178264.pdf
Data publikacji:: 2003
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: tablice zasobnosci drzewostanu
drzewostany sosnowe
modele wzrostu
dendrometria
klasy bonitacji siedliska
drzewostany
sosna
lesnictwo
zasobnosc drzewostanu
drzewa lesne
yield tables
site productivity
site index model
growth model
dynamic equations
initial condition models
Opis:: Tested are three approaches to development of site dependent height age model based on published Scots pine tabular data. The approaches included fitting four−parameter modified Gompertz function individually to all site productivity classes; fitting a one−parameter anamorphic dynamic site index equation to all the data; and fitting a three−parameter polymorphic dynamic site index equation with variable asymptotes to all data. The common fit to all data was based on a base−age invariant approach, in which the site−specific parameters different for each of the site productivity classes are estimated simultaneously with the global model parameters that are common to all site productivities. The best model proved to be based on the polymorphic dynamic equation with variable asymptotes by Cieszewski [2001, Three methods of deriving advanced dynamic site equations demonstrated on Inland Douglas−fir site curves. Can. J. For. Res. 31(1): 165−173], which fitted the data best and provided one common model for all the site classes. The produced model was concluded to be superior to the other models and to the original tables. The presented approach is recommended for modeling of other stand growth attributes.
Źródło:: Sylwan; 2003, 147, 01; 51-62
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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