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<p>Researching branching patterns is of great significance for tree growth, urban greening, and carbon storage. <i>Ficus</i> species are landscape trees widely used in subtropical regions, but research on their branching patterns is currently weak. In this study, the branching pattern of three commonly planted <i>Ficus altissima</i>, <i>F. celabensis</i> and <i>F. microcarpa</i> in southern China was studied. Allometric equations were developed by regressing biomass against branch length (B<sub>L</sub>) and branch diameter (B<sub>D</sub>), respectively. Reduced major axis (RMA) regression with logarithmic transformation was used to model the allometric relationship between biomass and B<sub>L</sub>/B<sub>D</sub> and to investigate differences in the allometric relationships of <i>Ficus</i> branches between different species and different branch orders. The results showed that the <i>Ficus</i> branches have different branching patterns. According to the established allometric equations of B<sub>D</sub>, B<sub>L</sub> and branch biomass, there were no differences in branches of <i>Ficus</i> in the model with B<sub>D</sub> as the independent variable, which provided a feasible scheme for establishing branch biomass equation with B<sub>D</sub>. With the increase of branch order of <i>Ficus</i> branches, the slope of the equation taking B<sub>D</sub> as the independent variable increases (e.g., <i>F. microcarpa</i> B<sub>D</sub>−B β values Order1–3 were 3.34, 3.56, 3.94, respectively), and the slope of the equation with branch length as the independent variable became smaller (e.g., <i>F. microcarpa</i> B<sub>L</sub>−B β values Order 1–3 were 2.05, 1.88, 1.40, respectively). These findings provide a basis for estimating the biomass of <i>Ficus</i> trees by simply using branches and contribute to the application of <i>Ficus</i> trees in urban green space.</p>

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Branching pattern and branch biomass allocation of three widely used urban greening Ficus Linnaeus species in Southern China

  • 期刊论文

  • 发表日期：

    2025年4月8日

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  • Chunjia Zheng,
  • Wei Guo,
  • Songyi Huang,
  • Xi Xiao,
  • Guangyuan Guo,
  • Xiaoling Lian,
  • Can Lai

摘要

Researching branching patterns is of great significance for tree growth, urban greening, and carbon storage. Ficus species are landscape trees widely used in subtropical regions, but research on their branching patterns is currently weak. In this study, the branching pattern of three commonly planted Ficus altissima, F. celabensis and F. microcarpa in southern China was studied. Allometric equations were developed by regressing biomass against branch length (BL) and branch diameter (BD), respectively. Reduced major axis (RMA) regression with logarithmic transformation was used to model the allometric relationship between biomass and BL/BD and to investigate differences in the allometric relationships of Ficus branches between different species and different branch orders. The results showed that the Ficus branches have different branching patterns. According to the established allometric equations of BD, BL and branch biomass, there were no differences in branches of Ficus in the model with BD as the independent variable, which provided a feasible scheme for establishing branch biomass equation with BD. With the increase of branch order of Ficus branches, the slope of the equation taking BD as the independent variable increases (e.g., F. microcarpa BD−B β values Order1–3 were 3.34, 3.56, 3.94, respectively), and the slope of the equation with branch length as the independent variable became smaller (e.g., F. microcarpa BL−B β values Order 1–3 were 2.05, 1.88, 1.40, respectively). These findings provide a basis for estimating the biomass of Ficus trees by simply using branches and contribute to the application of Ficus trees in urban green space.