Abstract Restoring invasion-resistant plant communities is critical for the successful control of invasive plant species. It is based on ecological principles, such as limiting similarity, and the diversity–invasibility hypothesis, which can be used to select optimal combinations of species and determine appropriate plant density for the effective suppression of invasion due to propagule pressure. However, no attempt has been made to combine these factors in a single research framework. Here, we show for the first time the relative importance of all significant factors, including seed density, limiting similarity, diversity effect, and propagule pressure, in the invasion mechanism of Sicyos angulatus, an invasive plant species. Our results suggest that seed density, rarely explored in previous studies, is as important a determinant of invasion success as limiting similarity, diversity effect, and propagule pressure. Thus, the density-mediated mechanism must be given careful consideration for the restoration of strong invasion-resistant native plant communities.

中文翻译：

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种子密度与限制植物恢复中的相似性、多样性效应和繁殖压力一样重要，以控制入侵

摘要 恢复抗入侵植物群落是成功控制入侵植物物种的关键。它基于生态学原理，例如限制相似性和多样性-入侵性假设，可用于选择物种的最佳组合并确定合适的植物密度，以有效抑制繁殖压力引起的入侵。然而，并没有尝试将这些因素结合在一个单一的研究框架中。在这里，我们首次展示了所有重要因素的相对重要性，包括种子密度、限制相似性、多样性效应和繁殖压力，在 Sicyos angulatus（一种入侵植物物种）的入侵机制中。我们的结果表明，在以前的研究中很少探索的种子密度，与限制相似性、多样性效应和繁殖压力一样重要的是入侵成功的决定因素。因此，必须仔细考虑密度介导的机制，以恢复强大的抗入侵本地植物群落。