Height-diameter allometric equations of an emergent tree species from the Congo Basin

Kafuti, Chadrack; Bulcke, Jan Van den; Beeckman, Hans; Acker, Joris Van; Hubau, Wannes; Mil, Tom De; Hatakiwe, Hulda; Djiofack, Brice Yannick; Panzou, Grâce Jopaul Loubota; Bourland, Nils

doi:10.1016/j.foreco.2021.119822

Cited by 14 publications

(9 citation statements)

References 44 publications

(92 reference statements)

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“…Several studies in the literature recommend that biomass equations based on both diameter (D) and height (H) are more accurate than equations based only on D [4,40,41]. Also, the precision and the accuracy of allometric equations increased with the level of specificity of equations as found by Paul et al [42].…”

Section: Discussionmentioning

confidence: 98%

Development of Allometric Equations to Determine the Biomass of Plant Components and the Total Storage of Carbon Dioxide in Young Mediterranean Argan Trees

Oumasst,

Tiouidji,

Tabi

et al. 2024

Sustainability

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Morocco’s argan trees, native to forests, are now cultivated in large orchards within the Argan Biosphere Reserve, transforming “Arganiculture”. These orchards are anticipated to bolster carbon storage, but their precise contribution to carbon storage remains unclear. This study introduces for the first time allometric equations for estimating biomass in different components of argan plants within orchards. A total of 89 plant individuals, aged 2 to 6 years, were collected. Their diameter and total height were measured. The biomass, carbon content, and biomass carbon stock of each component were determined. The best-fit allometric equation incorporates diameter, height, growing years, and root-to-shoot ratio to estimate total biomass (R2 = 0.95). The estimated total carbon biomass stock ranged from 0.01 to 0.82 t CO2 ha−1 for plants, at a density of 200 plants ha−1. Between 2021 and 2023, the average annual carbon sequestration was 0.20 t CO2 ha−1 year−1. This model offers valuable tools for use when species-specific equations during the establishment growing stage are unavailable, enhancing carbon sequestration quantification for more reliable results and informing climate change mitigation strategies. The allometric parameters serve as benchmarks for trees resembling the argan tree. The methodology could be adapted for other forest plants undergoing conversion to orchard cultivation.

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Section: Discussionmentioning

confidence: 98%

Development of Allometric Equations to Determine the Biomass of Plant Components and the Total Storage of Carbon Dioxide in Young Mediterranean Argan Trees

Oumasst,

Tiouidji,

Tabi

et al. 2024

Sustainability

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“…Se graficaron los valores predichos vs. residuales usando la función mywhiskers de la librería lmfor en R (Mehtätalo y Kansanen 2022). Se generaron medias de los residuos en 10 clases de dn con la función mywhiskers (Kafuti et al 2022) para observar la tendencia de los promedios calculado a partir de los errores de estimación. Se aplicó la prueba de Shapiro-Wilk (SW) para verificar la normalidad en la distribución de los residuos (Hernández-Ramos et al 2018).…”

Section: Análisis Estadístico De Las Ecuacionesunclassified

Funciones alométricas de altura total para pinos tropicales en Puebla, México

Puc-Kauil,

Nava-Nava,

Paredes-Díaz

et al. 2024

Ecosist. Recur. Agropec.

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Tropical pines are important because of the amount of wood they produce in short periods. However, it requires allometric functions to predict the total tree height, since it is one of the critical variables to estimate both, it is the total and commercial volume. Accordingly, we aimed to develop a local and a generalized allometric function for model the total height-diameter (h-d) relationship of Pinus caribaea var. hondurensis and hybrid Pinus caribaea var. hondurensis × Pinus tecunumanii in the Sierra Norte of Puebla, México. In order to analyze the relationships, 1 232 h-d pairs were used. The allometric models were fitted with three parameters totaling 80% of the data and validated with 20%. The best model had the lowest average bias, root mean square error, and Akaike’s Information Criterion, as well as of the highest adjusted coefficient of determination. The models explained over 58.55% of the variability in observed total tree height. Nonetheless, the Gompertz and Weibull models obtained the best performances in fit and validation, and estimated h of tropical pines with less uncertainty. In consequence, the fitted allometric functions are reliable for predicting tree h; therefore, it can contribute to the sustainable management of commercial tropical pine plantations in the study region.

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“…Trees adapt their size and shape to match the environment in which they grow (Jucker et al, 2015; Kafuti et al, 2022; Lines et al, 2012). A classic example is the fact that trees tend to be shorter for a given stem diameter in drier environments (Chave et al, 2014; Hulshof et al, 2015; Jucker et al, 2017; Lines et al, 2012; Vieilledent et al, 2012), as taller trees are generally at greater risk of hydraulic failure due to embolism and this effect is exacerbated when access to water becomes progressively more limiting (Domec et al, 2008; McDowell & Allen, 2015; Olson et al, 2018; Stovall et al, 2019).…”

Section: Case Studiesmentioning

confidence: 99%