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<p>Extensive experimental and theoretical evidence demonstrates the positive effects of plant diversity on the temporal stability of productivity, yet how the diversity-stability relationship varies across timescales and different diversity dimensions in natural ecosystems remains unclear. By integrating a comprehensive regional vegetation survey conducted in Tibetan alpine grasslands with the global plant diversity and productivity databases, we revealed a consistent temporal pattern at regional and global scales: the stabilizing effect of plant diversity on productivity strengthened over time, approaching saturation at 10 to 13 years. Notably, plant phylogenetic diversity emerged as the dominant biotic driver of long-term stability. In contrast, plant community height exerted a stronger positive influence on short-term stability. These findings highlight the critical role of timescales in shaping diversity-stability relationships and underscore the necessity of decadal-scale studies. Our results further support integrating phylogenetic diversity into conservation and management strategies to sustain ecosystem functioning under global change.</p>

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Decadal-scale observations are key to detecting the stabilizing effects of plant diversity in natural ecosystems

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Ruiyang Zhang,
  • Chenfang Su,
  • Yiheng Wang,
  • Shaopeng Wang,
  • Dashuan Tian,
  • Jinsong Wang,
  • Lin Jiang,
  • Xinli Chen,
  • Juntao Zhu,
  • Junxiao Pan,
  • Guang Zhao,
  • Quan Quan,
  • Pu Yan,
  • Yunlong He,
  • Yang Li,
  • Lei Song,
  • Jinlong Peng,
  • Yingjie Yan,
  • Yicheng He,
  • Xuehong Wei,
  • Shuli Niu

摘要

Extensive experimental and theoretical evidence demonstrates the positive effects of plant diversity on the temporal stability of productivity, yet how the diversity-stability relationship varies across timescales and different diversity dimensions in natural ecosystems remains unclear. By integrating a comprehensive regional vegetation survey conducted in Tibetan alpine grasslands with the global plant diversity and productivity databases, we revealed a consistent temporal pattern at regional and global scales: the stabilizing effect of plant diversity on productivity strengthened over time, approaching saturation at 10 to 13 years. Notably, plant phylogenetic diversity emerged as the dominant biotic driver of long-term stability. In contrast, plant community height exerted a stronger positive influence on short-term stability. These findings highlight the critical role of timescales in shaping diversity-stability relationships and underscore the necessity of decadal-scale studies. Our results further support integrating phylogenetic diversity into conservation and management strategies to sustain ecosystem functioning under global change.