Rusterholz Hans-Peter, Huber Katharina, Baur Bruno
Department of Environmental Sciences, University of Basel, Bernoullistrasse 30, 4056 Basel, Switzerland.
Program Man-Society-Environment, Department of Environmental Sciences, University of Basel, Vesalgasse 1, 4051 Basel, Switzerland.
Plants (Basel). 2023 Mar 31;12(7):1527. doi: 10.3390/plants12071527.
Horticultural trade is considered the most important pathway for the introduction of non-native plant species. Numerous horticultural plants are spreading from private gardens and public green space into natural habitats and have the potential to alter native biodiversity and ecosystem functioning. We assessed the invasiveness of the horticultural plant subsp. . We documented its spread in semi-natural habitats in the surroundings of Basel, Switzerland, over the past decades. We compared the performance of with that of the native subspecies based on surveys in forests and a pot experiment under standardized conditions. We also assessed whether the two subspecies differentially affect native forest vegetation and various physical, chemical and biological soil properties. The horticultural has tripled its occurrence in forests in the region of Basel in the last four decades. had both a higher growth rate and regeneration capacity than the native subspecies. Furthermore, reduced native plant species richness and changed the species composition of the ground vegetation, in addition to altering several soil properties in deciduous forests. should therefore be considered an invasive taxon.
园艺贸易被认为是引进非本地植物物种的最重要途径。众多园艺植物正从私人花园和公共绿地扩散到自然栖息地，并有可能改变本地生物多样性和生态系统功能。我们评估了园艺植物亚种的入侵性。我们记录了它在过去几十年里在瑞士巴塞尔周边半自然栖息地的扩散情况。基于森林调查和标准化条件下的盆栽实验，我们将与本地亚种的表现进行了比较。我们还评估了这两个亚种是否对本地森林植被以及各种物理、化学和生物土壤特性产生不同影响。在过去四十年里，园艺植物在巴塞尔地区森林中的出现频率增加了两倍。其生长速度和再生能力均高于本地亚种。此外，除了改变落叶林的几种土壤特性外，还降低了本地植物物种丰富度并改变了地被植物的物种组成。因此，应将视为一个入侵类群。
