微生物对土壤原料效应的控制在亚热带森林中慢性和添加下
Jian Li1,2,3, Zhan-Feng Liu4,5, Ming-Kang Jin2,3
1Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems & CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
The ISME journal
|September 29, 2023
概括
土壤营养物质的可用性,特别是和,影响土壤原始化效应 (PE) 和土壤有机物分解. 植物微生物相互作用是理解森林生态系统中这些影响的关键.
科学领域:
- 土壤科学 土壤科学
- 生态生态学 生态生态学
- 生物地质化学生物地质化学
背景情况:
- 土壤原始化效应 (PE) 改变了土壤有机物分解,影响了碳储存.
- 不同森林类型中慢性营养添加对PE的影响尚不清楚.
研究的目的:
- 研究如何营养物质的可用性 (和) 影响PE在豆类和非豆类森林.
- 为了探索驱动PE的微生物机制,在不同的营养系统下.
主要方法:
- 从亚热带种植园收集的土壤,具有历史的营养添加.
- 应用13C标记的葡萄糖来评估PE和微生物反应.
- 使用了DNA稳定同位素探测,qPCR,酶检测和基质利用.
主要成果:
- 在所有土壤中,添加葡萄糖始终诱导了阳性PE.
- 在豆类土壤和非豆类土壤之间,对PE的营养添加效应有所不同.
- 阳性PE与增加的微生物活性,营养基因丰富度和酶活性相关.
结论:
- 土壤营养平衡受植物类型的影响,通过根球微生物群落调节PE.
- 植物微生物相互作用在土壤原料和碳循环中起着至关重要的作用.
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