Growth modeling of the crown and trunk of Handroanthus heptaphyllus and Platanus x acerifolia trees in the southern Brazilian urban forest

IF 2.3 3区农林科学 Q2 FORESTRY

Trees Pub Date : 2026-03-12 DOI:10.1007/s00468-026-02745-y

Jessica Batista da Mata, Luciene Regina Leineker, Rogério Bobrowski

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引用次数: 0

Key message

Crown diameter of H. heptaphyllus and P. acerifolia stabilizes around 40 years, reaching 15 m and 13 m respectively, and models guide spacing planning and ecosystem service estimates in urban forests.

Abstract

The growth pattern of urban trees influences both planning of urban forest composition and estimating ecosystem services, with crown diameter (CD) being the most important variable. However, there is a lack of models that relate diameter at breast height (DBH) growth to crown diameter, especially under the environmental conditions of Brazilian cities. In this study, we fitted models to estimate the temporal growth of DBH and CD for two species widely planted in southern Brazil: H. heptaphyllus and P. acerifolia. Models relating CD and DBH, DBH growth models, and CD growth curves over time were developed. The best models for estimating CD based on DBH showed the following goodness-of-fit statistics: adjusted R² = 0.56, Syx(%) = 13.42, and RMSE = 1.67 for H. heptaphyllus; and adjusted R² = 0.82, Syx(%) = 8.42, and RMSE = 0.89 for P. acerifolia. The Chapman-Richards model showed adjusted R² = 0.85 and S_yx(%) = 37.96 for H. heptaphyllus, and adjusted R² = 0.87 and S_yx(%) = 36.72 for P. acerifolia. The CD growth curves reach stabilization at around 40 years of age, with mean crown diameters of 15 m and 13 m for H. heptaphyllus and P. acerifolia, respectively. The information generated is relevant for urban forest planning and management, supporting conflict prevention with urban infrastructure and maximization of the ecosystem services provided by urban trees.

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巴西南部城市森林中七叶Handroanthus hetaphyllus和Platanus x acerifolia树的树冠和树干生长模型

七叶松和针叶松的树冠直径在40年左右稳定，分别达到15 m和13 m，该模型可用于指导城市森林的间距规划和生态系统服务评估。摘要城市树木的生长格局影响着城市森林组成的规划和生态系统服务功能的估算，其中冠径（CD）是最重要的变量。然而，缺乏将胸径与树冠直径联系起来的模型，特别是在巴西城市的环境条件下。在这项研究中，我们拟合了两种巴西南部广泛种植的物种：H. heptaphyllus和P. acerifolia的DBH和CD的时间增长。建立了胸径与胸径的关系模型、胸径增长模型和胸径随时间的增长曲线。基于胸径估算CD的最佳模型的拟合优度统计值为：校正R2 = 0.56, Syx(%) = 13.42, RMSE = 1.67；校正后R2 = 0.82, Syx(%) = 8.42, RMSE = 0.89。Chapman-Richards模型的校正R2 = 0.85, Syx(%) = 37.96；校正R2 = 0.87, Syx(%) = 36.72。CD生长曲线在40年左右趋于稳定，平均树冠直径分别为15 m和13 m。所产生的信息与城市森林规划和管理有关，支持预防与城市基础设施的冲突，并最大限度地发挥城市树木提供的生态系统服务。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Trees 农林科学-林学

CiteScore

4.50

自引率

4.30%

发文量

113

审稿时长

3.8 months

期刊介绍： Trees - Structure and Function publishes original articles on the physiology, biochemistry, functional anatomy, structure and ecology of trees and other woody plants. Also presented are articles concerned with pathology and technological problems, when they contribute to the basic understanding of structure and function of trees. In addition to original articles and short communications, the journal publishes reviews on selected topics concerning the structure and function of trees.