What factors influence the stem taper of Eucalyptus: growth, environmental conditions, or genetics?

Gomat, Hugues Yvan; Deleporte, Philippe; Moukini, Régis; Mialounguila, Gladys; Ognouabi, Nina; Saya, Aubin Rachel; Vigneron, Philippe; Saint‐André, Laurent

doi:10.1007/s13595-011-0012-3

Cited by 39 publications

(31 citation statements)

References 24 publications

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“…This method is based on the likelihood-ratio test for detecting simultaneous homogeneity among parameters and requires the fitting of reduced and full models. This test has frequently been applied in forestry to compare differences among regionalized taper equations (e.g., Huang et al 2000;Klos et al 2007;Gomat et al 2011), single-tree volume equations (e.g., Pillsbury et al 1995;Brooks and Wiant 2008), and ecologically based height-diameter equations (e.g., Huang et al 2000;Zhang et al 2002;Castedo et al 2005;Brooks and Wiant 2007).…”

Section: Comparison Of Taper Functions Between Ecoregions and Speciesmentioning

confidence: 99%

Development of ecoregion-based merchantable volume systems for Pinus brutia Ten. and Pinus nigra Arnold. in southern Turkey

et al. 2015

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Estimating individual tree volume is one of the essential building blocks in forest growth and yield models. Ecologically based taper equations provide accurate volume predictions and allow classification by merchantable sizes, assisting in sustainable forest management. In the present study, ecoregion-based compatible volume systems for brutian pine and black pine in the three ecoregions of southern Turkey were developed. Several well-known taper functions were evaluated. A secondorder continuous-time autoregressive error structure was used to correct the inherent autocorrelation in the hierarchical data, allowing the model to be applied to irregularly spaced and unbalanced data. The compatible segmented model of Fang et al. (For Sci 46:1-12, 2000) best described the experimental data. It is therefore recommended for estimating diameter at a specific height, height to a specific diameter, merchantable volume, and total volume for the three ecoregions and two species analyzed. The nonlinear extra sum of squares method indicated differences in ecoregion and tree-specific taper functions. A different taper function should therefore be used for each pine species and ecoregion in southern Turkey. Using ecoregionspecific taper equations allows making more robust estimations and, therefore, will enhance the accuracy of diameter at different heights and volume predictions.

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Section: Comparison Of Taper Functions Between Ecoregions and Speciesmentioning

confidence: 99%

Development of ecoregion-based merchantable volume systems for Pinus brutia Ten. and Pinus nigra Arnold. in southern Turkey

et al. 2015

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“…The variety of models available today is evidence of deficiencies in the proposed models and shows stem profile model as a challenge that is still current (Gomat et al, 2011). The most common deficiencies in models relate to incorrect estimates, especially at the ends of the stem.…”

Section: Introductionmentioning

confidence: 99%

“…La gran variedad de modelos existente en la actualidad es evidencia de las deficiencias en los modelos propuestos y presenta la modelación del perfil del fuste como un desafío que aún está vigente (Gomat et al, 2011). Las deficiencias más frecuentes en los modelos se relacionan con estimaciones incorrectas, en especial en los extremos del fuste.…”

Section: Introductionunclassified

Modelo de ahusamiento por tipo de suelo para Pinus radiata en las regiones del Biobío y la Araucanía, Chile

Rodríguez-Toro¹,

Rubilar²,

Muñoz-Sáez³

et al. 2016

Rev Cha Se Cie For y del Amb

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Se presenta un nuevo modelo de ahusamiento generalizado en Pinus radiata en algunos tipos de suelo. Este es un modelo no lineal ajustado con datos de 264 árboles con edades entre 15 y 31 años, cosechados en 27 rodales localizados en 11 comunas de las regiones del Biobío y la Araucanía, Chile, en tres diferentes tipos de suelos (arenas volcánicas, cenizas volcánicas y sedimentos de origen marino). La generalización del modelo se logró incorporando variables de estado del rodal, y la posterior simplificación del mismo, incorporando la variabilidad del sitio de manera implícita en sus parámetros. La función de volumen obtenida de la integración numérica del modelo de ahusamiento predice más de 97 % de la variación del volumen del fuste sin corteza estimado mediante la fórmula de Smalian, en los tres tipos de suelo.

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“…The accurate description of the shape of the tree bole is critical for assessing multiple 398 products generated by a specific forest and it is quite challenging for eucalyptus species where 399 stem taper is constantly changing (Gomat et al 2011). In this study, we applied 10 different …”

mentioning

confidence: 99%

Comparison of taper functions applied to eucalypts of varying genetics in Brazil: application and evaluation of the penalized mixed spline approach

Scolforo

McTague

Raimundo³

et al. 2018

Can. J. For. Res.

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What factors influence the stem taper of Eucalyptus: growth, environmental conditions, or genetics?

Abstract: International audienc

Cited by 39 publications

References 24 publications

Development of ecoregion-based merchantable volume systems for Pinus brutia Ten. and Pinus nigra Arnold. in southern Turkey

Development of ecoregion-based merchantable volume systems for Pinus brutia Ten. and Pinus nigra Arnold. in southern Turkey

Modelo de ahusamiento por tipo de suelo para Pinus radiata en las regiones del Biobío y la Araucanía, Chile

Comparison of taper functions applied to eucalypts of varying genetics in Brazil: application and evaluation of the penalized mixed spline approach

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