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August 28, 2026PLoS ONEOpen Access

Altitudinal and slope gradients as key determinants of Robinia pseudoacacia growth

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Authors

YSYirui ShaoLHLiyan HouYLYuntao Li

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Overview

Field survey demonstrates declining Robinia pseudoacacia growth across increasing altitude and slope gradients, indicating lower-elevation plains optimize plantation productivity.

Key Points

  • To quantify the effects of landform types and topographic factors, specifically altitude and slope, on the growth performance and allometry of Robinia pseudoacacia plantations.
  • Conducted field surveys across 67 pure-stand Robinia pseudoacacia sample plots across plains, hills, and low mountains in Weifang, Shandong Province.
  • Assessed tree growth via diameter at breast height (DBH) and tree height using one-way ANOVA, linear regression models, and allometric scaling comparisons via ANCOVA.
  • Trees growing on plains exhibited significantly greater mean DBH and tree height compared with trees located on hills and low mountains.
  • DBH and tree height decreased by approximately 0.58 cm and 0.47 m per 100 m increase in altitude (R² = 10.1–10.6%), and by 0.76 cm and 0.57 m per 10° increase in slope (R² = 5.5–6.8%).
  • Allometric height–DBH scaling relationships remained stable across landforms (ANCOVA, P = 0.776), yielding scaling exponents of 0.59 in low mountains, 0.48 on hills, and 0.68 on plains.

Cite This Study

Shao et al. (2026) studied this question.

synapsesocial.com/papers/6a916ea0d15324a1df3aa804https://doi.org/10.1371/journal.pone.0354736
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  1. 1Responses of belowground fine root biomass and morphology in Robinia pseudoacacia L. plantations to aboveground environmental factors2024 · 10 citations
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  4. 4Spatial Pattern of Drought-Induced Mortality Risk and Influencing Factors for Robinia pseudoacacia L. Plantations on the Chinese Loess Plateau2024 · 1 citations
  5. 5Leaf anatomical plasticity of Robinia pseudoacacia in response to slope-related soil water heterogeneity on granite slopes2026