更持久的天气会导致明显的土壤微生物遗产,但不会影响后续的植物群落
Lingjuan Li1, Qiang Lin2, Ivan Nijs1
1Research Group of Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, 2610 Wilrijk, Belgium.
The Science of the total environment
|August 26, 2023
概括
暴露在持续的天气模式下的土壤微生物群体显示出持久的真菌变化,但暂时的细菌转移. 这些历史的土壤条件并没有影响新的气候条件下的未来植物生长.
科学领域:
- 生态生态学 生态生态学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 土壤微生物群落对于生态系统功能至关重要.
- 气候变化带来的极端天气事件会改变土壤微生物的组成.
- 了解过去天气对土壤生物群的遗留影响对于预测生态系统弹性至关重要.
研究的目的:
- 调查前降水模式 (PR) 诱导的土壤微生物变化是否会影响后续PRs的反应.
- 评估土壤遗留效应在不同的天气条件下对植物和微生物群落的影响.
- 确定历史气候持续对草原生态系统的持久影响.
主要方法:
- 草原中层宇宙在环境 (1天湿干) 或持久 (30天湿干) 降水模式下进行了一年的条件.
- 条件化的土壤被用来接种灭菌的土壤,并建立了新的植物群落.
- 然后,这些社区在60天内接受了环境或持续的PR,并评估了土壤微生物和植物的反应.
主要成果:
- 历史上的持久PR导致真菌群落的持久变化和细菌群落的暂时变化.
- 在目前的PR中,没有观察到土壤微生物遗留对植物生产力的显著影响.
- 该研究表明,过去的气候持续性影响了土壤生物群对随后的气候持续性的反应.
结论:
- 土壤微生物群落表现出基于历史气候暴露的差异性遗留效应,真菌显示出更持久的变化.
- 尽管存在微生物遗留效应,但植物生产率在短期内并没有受到过去气候制度的显著影响.
- 这项研究为草原生态系统中的土壤遗产提供了关键的实验证据,有助于预测对未来气候变化的反应.
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