Modelling height-diameter relationships in complex tropical rain forest ecosystems using deep learning algorithm

FN Ogana, I Ercanli - Journal of Forestry Research, 2022‏ - Springer
Modelling tree height-diameter relationships in complex tropical rain forest ecosystems
remains a challenge because of characteristics of multi-species, multi-layers, and …

A comparison between derivative and numerical optimization methods used for diameter distribution estimation

JJ Gorgoso-Varela, FN Ogana… - Scandinavian Journal of …, 2020‏ - Taylor & Francis
Modeling diameter distribution of forest stands requires suitable function (s) with the
appropriate parameter estimation methods. To date, the parameters of most familiar …

[HTML][HTML] A nonlinear mixed-effects tree height prediction model: Application to Pinus pinaster Ait in Northwest Spain

FN Ogana, JJ Gorgoso-Varela - Trees, Forests and People, 2020‏ - Elsevier
This study introduced a new height prediction model based on the modification of power
function distribution. The model was fitted to the Pinus pinaster Ait (Maritime pine) data set …

[HTML][HTML] Allometric model for height estimation of Alnus acuminata Kunth in agroecological zones of the high Andean tropics

PP Bacca-Acosta, BG Obando-Enriquez… - Revista de Ciencias …, 2023‏ - scielo.org.co
The complexity in the management of field tools for recording dasometric information has led
to the use of allometric equations that save time, work, and costs allowing the estimation of …

A mixed-effects height-diameter model for Gmelina arborea Roxb stands in Southwest Nigeria

FN Ogana - Journal of Forest Research, 2022‏ - Taylor & Francis
Nonlinear mixed-effects (NLME) is an important tool for explaining inter-and intra-plot/stand
variations, especially when modelling height–diameter relationships. The NLME technique …

An evaluation of ten estimators for fitting two-parameter weibull function to Nigerian forest stands

FN Ogana - Eurasian Journal of Forest Science, 2020‏ - dergipark.org.tr
The quality fit produce by distribution function such as the Weibull depends to an extent the
type of estimator used to derive its parameters. Inappropriate choice of estimator could affect …