Compatible taper-volume systems for major tropical species in Mexico

López‐Martínez, Jorge Omar; Vargas-Larreta, Benedicto; Calderón, Óscar Alberto Aguirre; Aguirre-Calderón, Cristóbal Gerardo; Macario-Mendoza, Pedro Antonio; Martínez-Salvador, Martín; Álvarez‐González, Juan Gabriél

doi:10.1093/forestry/cpz033

Cited by 6 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consequently, stem taper differs among the four species analyzed. This result is consistent with other studies regarding the development of compatible taper and volume systems in different pine species that also reported differences in tree taper [31,38,49]. In these cases, the compatible segmented-stem system reported by Fang et al [50] was used for accounting differences between stem profiles for different species of Durango Mexico.…”

Section: Full Compatible System (Fcs)supporting

confidence: 90%

“…Thus, the reduced compatible system based on volume ratio RCS3 was proposed as the most suitable to be tested as a full model with dummy variables to assess whether separate models are necessary for describing the stem profile and predicting stem volume of the four pine species analyzed in this study. Similar approaches have been used to assess if there are no differences in predicting taper and merchantable volume for different species [31,38,49]. Some differences were showed for loblolly pine in two different plantations of the southeastern USA and Oklahoma USA for the same compatible system [10], also for some pine species in Durango Mexico [1].…”

Section: Reduced Compatible Systems (Rcs)mentioning

confidence: 99%

See 1 more Smart Citation

Compatible Taper and Volume Systems Based on Volume Ratio Models for Four Pine Species in Oaxaca Mexico

Castillo-López

Quiñonez-Barraza

Diéguez-Aranda

et al. 2021

Forests

View full text Add to dashboard Cite

Estimating tree volume components is an essential element in sustainable forest management. Compatible taper and merchantable outside-bark volume systems based on volume ratio models were globally fitted to four pine species (reduced models) with the aim to select the best reduced model and to fit it with dummy variables and additive effects using Pinus pseudostrobus Lindl as a base species. The study was carried out in the northern mountains of Oaxaca, Mexico. To fit the taper, merchantable volume, stem volume, branch volume, and total tree volume (stem volume and branch volume) equations, a taper dataset of 222, 230, 245, and 333 trees of Pinus douglasiana Martínez (Pd), Pinus oaxacana Mirov (Po), Pinus patula Schltd (Pp), and Pinus pseudostrobus Lindl (Pps), respectively, was used. In general, the compatible systems explained more than 97% in the observed variability for the four studied components: outside-bark diameter (d), merchantable outside-bark volume (Vm), stem outside-bark volume (Vs), and total tree volume (Vt). Alternatively, more than 52% of the observed variability for branch volume (Vb) was also explained. The developed compatible systems based on volume ratio models are a simple and consistent alternative for estimating the outside-bark diameter and variable outside-bark volume, as well as the components of commercial species for uneven-age and mixed-species forests in Oaxaca, Mexico.

show abstract

Section: Full Compatible System (Fcs)supporting

confidence: 90%

Section: Reduced Compatible Systems (Rcs)mentioning

confidence: 99%

Compatible Taper and Volume Systems Based on Volume Ratio Models for Four Pine Species in Oaxaca Mexico

Castillo-López

Quiñonez-Barraza

Diéguez-Aranda

et al. 2021

Forests

View full text Add to dashboard Cite

show abstract

“…An investigation of each class for each validation statistic of TPP 2 indicated that the mean prediction error of dub prediction at any given h, h prediction at any given dub, and log volume prediction at any given log length was within 0.8-2.3%, 1.5-4.8%, and 1.8-2.5%, respectively (Table 4). Importantly, the model predicted all 3 values within 1.8% in the lower bole, due to more sample points, resulting in a relatively higher accurate prediction in the lower bole, which is a more valued section of a tree (Fonweban et al, 2011;Warner et al, 2016;Zheng et al, 2017;López-Martínez et al, 2019). Overall, there was reduction in prediction accuracy for samples collected toward the top of the tree and of log volume prediction in taller trees.…”

Section: Validation Of Calibrationsmentioning

confidence: 96%

Development of a Taper Equation for Teak (Tectona grandis L.f.) Growing in Western Thailand

Choochuen

Suksavate

Meunpong

2021

Environ. Nat. Resour. J.

View full text Add to dashboard Cite

Teak is an important and valuable tropical hardwood species. In this study, we developed and evaluated suitable taper equations for teak growing in Western Thailand using a formulation of Goodwin cubic polynomial model combined with a bark thickness model. The best taper model calibration was selected based on goodness-of-fit and leave-one-out cross validation statistical testing. In total, 12 different model calibrations were tested, with Thong Pha Phum (TPP) 2 being the most suitable for teak in Western Thailand. The mean prediction error of three validation statistics: (prediction of diameter under bark given height; prediction of height given diameter under bark; and prediction of under bark volume given log length) were within 10% and the overall validation index was 5.454, which was the lowest when compared to other calibrations. A comparison of TPP 2 with a teak taper equation developed for Northern Thailand, using a graphical analysis of the stem shape and bark thickness, indicated that the teak trees growing in the two regions have similar stem shapes, but the trees in Western Thailand tend to have a thicker bark. These results will also help in further work as they indicate that bark thickness equations are particularly important.

show abstract

“…En este sentido, el modelo de Fang et al (2000) puede emplearse sin problemas en la planificación forestal, dado que incorpora de manera implícita la ecuación de volumen total de Schumacher y Hall (1933) y, a su vez, puede ser reemplazada por otra similar, según sea conveniente, lo que permite generar una mayor ganancia en el aprovechamiento (Niño-López et al, 2018). El modelo es capaz de describir el conjunto de datos del fuste y el volumen de cualquier especie sin ningún inconveniente (Özçelik y Göçeri 2015;Quiñonez-Barraza et al, 2014), además de las especies tropicales, lo que facilita su incorporación a los sistemas biométricos (López-Martínez et al, 2020).…”

Section: Introductionunclassified

Función ahusamiento-volumen comercial de Abies religiosa (Kunth) Schltdl. & Cham. en varias regiones de México

et al. 2022

Self Cite

View full text Add to dashboard Cite

La relación ahusamiento-volumen es indispensable para la planeación del manejo silvícola en los bosques con la finalidad de favorecer la distribución de los productos. Por esta razón, el objetivo del presente estudio fue generar un modelo compatible que permitiera estimar de forma precisa el volumen-ahusamiento de Abies religiosa en varias regiones de México. Se utilizaron 2608 datos en el análisis de la información y el modelo se ajustó simultáneamente mediante la regresión aparentemente no relacionada (RAN) para la estimación de parámetros compatibles. El modelo generó coeficientes de determinación ajustados superiores al 97 %, raíces del medio cuadrático menores al 0.40, sesgos menores a 0.11, con certeza para modelar cada región forestal; datos que fueron complementados con sus respectivos criterios de información Akaike (AIC). En la mayoría de casos el factor de forma de la especie fue neiloide a paraboloide, información que será de utilidad para la elaboración de inventarios forestales.

show abstract

Compatible taper-volume systems for major tropical species in Mexico

Cited by 6 publications

References 42 publications

Compatible Taper and Volume Systems Based on Volume Ratio Models for Four Pine Species in Oaxaca Mexico

Compatible Taper and Volume Systems Based on Volume Ratio Models for Four Pine Species in Oaxaca Mexico

Development of a Taper Equation for Teak (Tectona grandis L.f.) Growing in Western Thailand

Función ahusamiento-volumen comercial de Abies religiosa (Kunth) Schltdl. & Cham. en varias regiones de México

Contact Info

Product

Resources

About