It has been established by research on plant invasions that soil biota and availability of nutrients affect the processes of alien species establishment and spread. So far, attention was mainly on alien invaders, although some native species (expansive), vigorously spread in human-influenced landscapes and also transform the habitats they colonize. Based on indirect gradient ordination analysis of vegetation relevés dominated by five native (Calamagrostis epigejos, Filipendula ulmaria, Phalaris arundinacea, Rubus idaeus, Urtica dioica) and five alien taxa (Impatiens glandulifera, Lupinus polyphyllus, Telekia speciosa, Reynoutria sp., Solidago canadensis agg.) in the Czech Republic, Central Europe, we identified pairs of species differing by origin (native vs alien) and growing in similar habitats. In the resulting 10 pairs, we tested the net effect of species origin on the following soil characteristics: (i) physical properties, (ii) nutrient availability, and (iii) biological activity. We found that the impact of alien invasive and native expansive species on soil cannot be explained simply by species’ origin as a factor. Regardless of the origin, a statistically significant effect was recorded only for factors expressing nitrogen supply at the peak of the vegetation season and soil biological activity. Differences in impacts attributable to origin were only verified for individual pairs, being most pronounced between the alien Lupinus and its native counterparts Calamagrostis and Filipendula, and least between Solidago vs Calamagrostis, and Telekia vs Rubus. Both invasive alien and expansive native dominant plants can alter the rate of decomposition by changing the litter quality and availability of nutrients, mainly inorganic nitrogen. Therefore, management actions to preserve or restore diversity and mitigate the negative impacts of dominant species should be focused both on native and alien species.

通过对植物入侵的研究已经确定，土壤生物群和养分的可用性会影响外来物种的建立和传播过程。到目前为止，注意力主要集中在外来入侵者上，尽管一些本地物种（扩张）在受人类影响的景观中大力传播，并改变了它们殖民的栖息地。基于由五个本地植物（Calamagrostis epigejos、Filipendula ulmaria、Phalaris arundinacea、Rubus idaeus、Urtica dioica）和五个外来分类群（Impatiens glandulifera、Lupinus polyphyllus、Telekia speciosa、Reynoutria sp.、Solidago canadensis ）主导的植被相关性的间接梯度排序分析agg.) 在捷克共和国，中欧，我们确定了成对的物种，它们的起源（本地与外来）不同并且生长在相似的栖息地。在由此产生的 10 对中，我们测试了物种起源对以下土壤特征的净影响：(i) 物理特性，(ii) 养分可用性，以及 (iii) 生物活性。我们发现，外来入侵和本地膨胀物种对土壤的影响不能简单地用物种起源作为一个因素来解释。无论起源如何，仅对表达植被季节高峰期氮供应和土壤生物活动的因素有统计上的显着影响。起源影响的差异仅针对个别对进行了验证，在外星羽扇豆之间最为明显及其本地对应物Calamagrostis和Filipendula，最少的是Solidago vs Calamagrostis，以及Telekia vs Rubus。外来入侵植物和膨胀的本地优势植物都可以通过改变垫料质量和养分（主要是无机氮）的可用性来改变分解速度。因此，保护​​或恢复多样性和减轻优势物种负面影响的管理行动应同时关注本地和外来物种。