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<p>Co-invasion recruited by multiple invasive plants (IPS) has potential to create more complicated and severe ecological threats on the ecological functions of native communities in comparison with mono-invasion of one IPS. Nevertheless, it is still unidentified whether species number of IPS (<i>S</i><sub><i>IPS</i></sub>) is an vital factor regulating IPS’ invasion intensity and community invasibility under the invasion with a <i>S</i><sub><i>IPS</i></sub> gradient. This study aims to estimate the influences of plant taxonomic diversity, the intensity of interspecific interactions, and IPS’ invasion intensity on the community invasibility under different invasion conditions with a <i>S</i><sub><i>IPS</i></sub> gradient. A comparative field survey method was used in Jiangsu (including Zhenjiang, Nantong, Yancheng, and Lianyungang), China. Plant communities with the mono-invasion achieved by different IPS species, the co-invasion achieved by two and three IPS, and the uninvaded communities were measured. The mono-invasion caused by one IPS significantly declined the Margalef’s richness compared to the uninvaded communities. Plant taxonomic diversity, IPS’ invasion intensity, and the community invasibility increased as <i>S</i><sub><i>IPS</i></sub> increases. IPS’ invasion declined the intensity of interspecific interactions. IPS’ invasion intensity and the total relative coverage contributed most to the community invasibility under the invasion with a <i>S</i><sub><i>IPS</i></sub> gradient.</p>

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Which factor has greatest influence on the community invasibility under invasion with different species number of invasive plants?

  • 期刊论文

  • 发表日期：

    2026年3月13日

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  • Yingsheng Liu,
  • Yizhuo Du,
  • Xiaoxuan Geng,
  • Congyan Wang,
  • Daolin Du

摘要

Co-invasion recruited by multiple invasive plants (IPS) has potential to create more complicated and severe ecological threats on the ecological functions of native communities in comparison with mono-invasion of one IPS. Nevertheless, it is still unidentified whether species number of IPS (SIPS) is an vital factor regulating IPS’ invasion intensity and community invasibility under the invasion with a SIPS gradient. This study aims to estimate the influences of plant taxonomic diversity, the intensity of interspecific interactions, and IPS’ invasion intensity on the community invasibility under different invasion conditions with a SIPS gradient. A comparative field survey method was used in Jiangsu (including Zhenjiang, Nantong, Yancheng, and Lianyungang), China. Plant communities with the mono-invasion achieved by different IPS species, the co-invasion achieved by two and three IPS, and the uninvaded communities were measured. The mono-invasion caused by one IPS significantly declined the Margalef’s richness compared to the uninvaded communities. Plant taxonomic diversity, IPS’ invasion intensity, and the community invasibility increased as SIPS increases. IPS’ invasion declined the intensity of interspecific interactions. IPS’ invasion intensity and the total relative coverage contributed most to the community invasibility under the invasion with a SIPS gradient.