Predicting tree height from tree diameter and dominant height using mixed-effects and quantile regression models for two species in Turkey
By Ramazan Özçelik, Q. V. Cao, Guillermo Trincado, Nilsun Göçer. Forest Ecology and Management, 2018
75 citations recorded by the source corpus.
Abstract Height-diameter models were developed for Brutian pine (Pinus brutia Ten.) and Taurus cedar (Cedrus libani A. Rich.) in Turkey. A modified Chapman-Richards model that includes dominant height was used to predict tree height from diameter. Using the twofold evaluation scheme, five alternative modeling approaches were evaluated: (1) fixed-effects model, (2) calibrated fixed-effects model, (3) calibrated mixed-effects model, (4) three-quantile regression method, and (5) five-quantile regression method. Parameters of fixed-effects, mixed-effects and quantile regression models were calibrated by use of a subset of height measurements, ranging from 1 to 10 sample trees per plot. Evaluation statistics show that both quantile regression models produced similar results, and that the mixed-effects model approach yielded the best results in predicting tree heights. Model performance improved with increasing sample size; but gains in performance generally increased at a decreasing rate. A sample size of four trees per plot appears to be a good compromise between sampling cost and predictive accuracy and precision.
Subfields: Environmental Engineering, Mechanical Engineering, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/a53790f462ee7905b9ae72d2092e4142a79363fe
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In Environmental Engineering
In Mechanical Engineering
In Nature and Landscape Conservation
Citations in the corpus
- A Nonlinear Mixed-Effects Height-to-Diameter Ratio Model for Several Tree Species Based on Czech National Forest Inventory Data (2019, background): “For stands with homogenous canopies, the measured HDR of a single tree per sample plot may provide a precise result [104], but more trees are needed for the stands with heterogeneous canopies [53,54,58,105,106].”