Subtropical forests are important carbon sinks and have a huge potential for mitigating climate change. However, few studies have developed biomass models to give robust estimates of subtropical forest aboveground and belowground biomass. Although wood density (WD) can greatly reduce the uncertainty in aboveground biomass (AGB) estimates in tropical forest, it has never been applied in other ec...

Bent trees have been observed during the early years in juvenile plantations (less than 5 years-old) of Tectona grandis in Costa Rica. The relationship between bending and the morphological characteristics of the trees was explored. An evaluation of bent trees was conducted in six juvenile plantations (8, 17, 27, 28, 31, and 54 months old) of Tectona grandis. Site 1 with 8-month-old plantations...

This paper reviews an aerial sampling technique that could reduce the cost of calculating standing forest biomass in remote regions by collecting a geographically distributed set of large scale transects that include a limited number of permanent plots. The biomass of these plots is calculated from allometric equations and extrapolated to the transects as a function of tree species, crown diame...

A stand generation (or initialization) procedure is designed to furnish morphologically plausible model trees for process-based projection. The steps of the initialization are: (i) the generation of the locations of model trees and the tessellation of tree areas; (ii) the sampling of diameters from a target distribution and assignments of those diameters to model-tree locations; (iii) the calcu...

Height to crown base (HCB) is an important variable used as a predictor of forest growth and yield. This study developed nonlinear, mixed-effects HCB model through inclusion plot-level random effects using data from 29 sample plots distributed across state-owned Yixing farm in Jiangsu province, eastern China. Among several variables evaluated the analyses, bamboo height, canopy density, total b...