1993
DOI: 10.1139/x93-288
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Estimating coefficients of base-age-invariant site index equations

Abstract: Remeasurement height data used in this study were collected from plantations of loblolly pine (Pinustaeda L.) established in the Southwide Pine Seed Source Study. Three different methods for estimating coefficients of five base-age-invariant site index models were evaluated. The first method involves obtaining coefficients from either a height–age equation or a differential equation. Coefficients from the remaining two methods were estimated from a height growth equation (difference equation) of which the depe… Show more

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Cited by 36 publications
(31 citation statements)
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“…These results are consistent with those obtained by Cao [11] where the root mean square error of the Amateis and Burkhart model increased much more quickly than Clutter and Lenhart [19] and height-age equation-based models when the time projection length increased, indicating that the estimation capabilities of this model are strongly dependent on the data structure used.…”
Section: Model Comparisonsupporting
confidence: 90%
See 2 more Smart Citations
“…These results are consistent with those obtained by Cao [11] where the root mean square error of the Amateis and Burkhart model increased much more quickly than Clutter and Lenhart [19] and height-age equation-based models when the time projection length increased, indicating that the estimation capabilities of this model are strongly dependent on the data structure used.…”
Section: Model Comparisonsupporting
confidence: 90%
“…The difference equation method has been widely used to develop site index curves (e.g. [4,8,11,18,37]) and it will be used in this study.…”
Section: Equations Consideredmentioning
confidence: 99%
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“…Although the three methods are not mutually exclusive, the difference equation method has been the preferred form for developing site index curves [1,2,5,11,45,48].…”
Section: Methods For Constructing a Site Index Systemmentioning
confidence: 99%
“…Hoy en día se dispone de un amplio elenco de ecuaciones de este tipo (Cao, 1993;Huang, 1997), desarrolladas, por diferenciación y expansión de parámetros, a partir de ecuaciones clásicas de crecimiento tales como la de Richards (1959), Korf (1939) o Schumacher (1939.…”
Section: Ajusteunclassified