RT Journal Article
T1 Height-diameter models for maritime pine in Portugal: a comparison of basic, generalized and mixed-effects models
A1 Gómez García, Esteban
A1 Fonseca, Teresa F.
A1 Crecente Campo, Felipe
A1 Almeida, Luís R.
A1 Diéguez Aranda, Ulises
A1 Huang, Shongming
A1 Marques, Carlos P.
K1 Pinus pinaster Ait.
K1 Sampling Design
K1 Local Model
K1 Stand Variables
K1 Generalized h-d Relationship
K1 Calibration
AB Tree height is a key variable in forest monitoring studies and for forest management. However, tree height measurement is time consuming, and the recommended procedure is to use estimates from height-diameter models. Here,we compare height-diameter model forms and approaches for predicting treeheight (h) as a function of tree diameter at breast height (d) and additionalstand level covariates. Four model forms were evaluated: (i) basic models(which only used d as predictor variable); (ii) generalized models (which usedd and stand-level predictor variables); (iii) a mixed-effects model based on thebest basic model; and (iv) a mixed-effects model based on the best generalized model. Several alternatives aimed at minimizing height measurement effort were tested in terms of accuracy and applicability. From a practical pointof view, the selected generalized model is recommended for estimating theheight of maritime pine in Portugal. The results also show that a calibratedbasic mixed model provides more accurate results than a basic model locallyfitted when the number of h-d observations is limited.
PB Italian Society of Silviculture and Forest Ecology (SISEF)
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22536
UL http://hdl.handle.net/10347/22536
LA eng
NO Gómez-García E, Fonseca TF, Crecente-Campo F, Almeida LR, Diéguez-Aranda U, Huang S, Marques CP (2015). Height-diameter models for maritime pine in Portugal: a comparison of basic, generalized and mixed-effects models. iForest 9: 72-78. - doi: 10.3832/ifor1520-008
DS Minerva
RD 28 abr 2026