Temat: dynamic growth - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Dynamiczne krzywe bonitacyjne dla sosny zwyczajnej (Pinus sylvestris L.) z południowej Polski
Dynamic site index curves for Scots pine (Pinus sylvestris L.) in southern Poland
Autorzy:: Socha, J.
Orzeł, S.
Powiązania:: https://bibliotekanauki.pl/articles/993955.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewostany sosnowe
bonitacja drzewostanow
sosna zwyczajna
Pinus sylvestris
krzywe bonitacyjne
Polska Poludniowa
site index model
base−age invariant dynamic equation
height growth
site productivity
Opis:: The aim of the study was to develop a site index model for Scots pine stands in southern Poland describing changes in height growth of stand's upper storey over time. The research material contained the height growth data obtained from an analysis of 189 tree stems. The collected material was used to develop the parameters of six dynamic growth equations which allowed to determine site productivity and predict changes in height growth of stands with age. Statistical criteria for assessing the accuracy of mapping empirical data and biological reasonableness were the basis of selection of the equation that best fits changes in height growth of the examined pine stands with age. The developed model can be used to predict the growth rate and determine the site index for Scots pine stands in southern Poland.
Źródło:: Sylwan; 2013, 157, 01; 26-38
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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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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