Open AccessFEATURES AND APPLICATIONS OF BERTALANFFY‐RICHARDS‘ AND SCHNUTE'S GROWTH EQUATIONS
Author(s) -
YUANCAI LEI,
MARQUES CARLOS PACHECO,
BENTO JOÃO MANUEL
Publication year - 2001
Publication title -
natural resource modeling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.28
H-Index - 32
eISSN - 1939-7445
pISSN - 0890-8575
DOI - 10.1111/j.1939-7445.2001.tb00066.x
Subject(s) - gompertz function , mathematics , richards equation , growth model , range (aeronautics) , growth function , logistic function , statistics , mathematical economics , geology , soil science , composite material , soil water , materials science
. Based on various ranges of the parameter m (or b ), the paper analyzes the features and the integral forms of the Schnute and the Bertalanffy‐Richards growth equations as well as the two aspects of their special cases (such as Gompertz, logistic and monomolecular models). It is a first attempt to investigate all the corresponding relationships among parameters of the models derived from the Schnute and the Bertalanffy‐Richards growth equations. All the models from the two are empirically fitted by different data sets for eucalypt plantations. Unlike earlier papers, the results of this paper show that either of the two growth equations can be considered as a model for estimating forest growth given a parameter range, and both can produce similar growth performances. Some other aspects of the two growth equations are discussed so that the two can be used correctly.