种植模式影响了三种侵入性和它们各自相关的原生物种之间的生长差异及其对形式和水平的反应
Wei-Wei Feng1, Kai Huang1, Si-Miao Sun1
1Liaoning Key Laboratory for Biological Invasions and Global Changes, College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China.
Plants (Basel, Switzerland)
|June 27, 2025
概括
形式的全球变化,特别是向酸盐的转变,有利于入侵植物而不是本地植物,特别是在竞争下. 这表明富含酸盐的环境可能更容易受到外来植物入侵的影响.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 植物生物学 植物生物学
背景情况:
- 全球变化,包括大气沉积,增加了土壤的可用性,通常与外来植物入侵有关.
- 很少有研究研究了土壤中形式变化的影响,而不仅仅是可用性,对植物入侵的影响,特别是考虑到种际竞争.
研究的目的:
- 确定不同形式 (酸盐与氨) 和添加水平如何影响入侵植物和本地植物物种的生长,生物质分配和光合作用.
- 评估物种间竞争在介导入侵植物和本地植物对形式的反应中的作用.
- 使用15N标签识别入侵物种和本地物种的形式偏好.
主要方法:
- 与三个入侵物种 (Xanthium strumarium,Ambrosia trifida,Bidens frondosa) 和它们的相关本地物种进行了比较生长实验,在不同的形式,添加水平和具有/没有跨物种竞争的情况下.
- 15N标签技术用于追踪的吸收,并确定物种对酸盐和的偏好.
主要成果:
- 跨物种竞争扩大了对入侵者增加的生长反应,特别是在酸盐下,同时抑制了本地人的反应.
- 入侵者表现出对酸盐的偏好,而本地人则更喜欢氨,这导致了入侵者在富含酸盐的条件下更大的生长优势.
- 单种植条件减少了入侵者生长优势,而形式偏好在某些物种中不太明显或完全不存在.
结论:
- 土壤中形式的变化,特别是由于全球变化而从氨转为酸盐的转变,可以促进外来植物入侵.
- 跨物种竞争和形式的可用性显著影响了入侵物种和本地物种之间的竞争动态.
- 混合文化实验对于理解侵入性至关重要,因为它们更好地反映了自然的竞争性相互作用.
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