Dominant Height Growth in Tectona grandis Plantations in Mato Grosso, Brazil

ABSTRACT Tectona grandis (teak) plantations have gained increased interest in recent decades in Brazil, bringing about the need for acquiring information regarding the growth and productive potential. The present work aims to evaluate the growth of dominant height in teak at various locations in the state of Mato Grosso, midwest Brazil. For this purpose, six stands were evaluated in distinct municipalities and the database was obtained from trunk analysis. Subsequently, the dominant height growth was estimated using nonlinear regression models, whose performance was evaluated, based on goodness-of-fit statistics and graphical analysis of residues. Tests for model identity were used to analyze the differences in growth rates between sites (municipalities). The studied teak stands displayed different dominant height growth trends, with differences reaching up to 37%.

摘要：近几十年来，巴西境内柚木（Tectona grandis）人工林的受关注程度持续提升，由此产生了获取其生长与生产潜力相关信息的迫切需求。本研究旨在评估巴西中西部马托格罗索州不同县域柚木的优势树高生长情况。为此，研究选取了6个分布于不同县域的柚木林分，数据库通过树干解析法构建。随后，采用非线性回归模型估算优势树高生长量，并基于拟合优度统计量与残差图形分析对模型性能进行评估。利用模型同一性检验分析不同试验点（县域）间的生长速率差异。结果显示，本研究涉及的柚木林分呈现出各异的优势树高生长趋势，最大差异可达37%。