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Chromolaena odorata通过改变土壤氨氧化微生物来影响热带珊瑚岛屿的土壤转化和竞争

Chengzhi Yuan¹, Jia Gao¹, Luping Huang¹

¹CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones & Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China.

The Science of the total environment

|August 3, 2024

概括

侵袭性Chromolaena odorata通过增强土壤转化和增加其根系层中营养素的可用性来超越热带岛屿上的本地植物. 这种侵入性策略影响了土壤微生物群落和生态系统动态.

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:

侵入性植物改变了土壤微生物群落和循环,赋予了竞争优势.
侵袭性Chromolaena odorata的特定竞争机制,特别是关于土壤转化,仍未得到充分研究.

研究的目的:

为了在热带珊瑚岛上比较侵入性C. odorata和本地Pisonia grandis和Scaevola taccada之间的微生物介导的土壤变化.
评估植物生物质,组织含量,土壤营养素,微生物活动和氨氧化微生物对入侵物种竞争力的影响.

主要方法:

植物生物质分配,组织含量,土壤营养素和转化率的比较分析.
评估微生物生物质,活性,以及在入侵植物和本土植物的树叶圈中的氨氧化微生物的多样性/丰富性.
土壤动态和微生物群落之间的统计相关性分析.

主要成果:

C. odorata表现出优越的竞争力,与本地物种相比,将更多的生物质分配到地表部分.
C. odorata 的树叶球土壤显示出比本土植物土壤更高的可用和净矿化率.
在C. odorata根系球中增加氨氧化细菌的丰富性与土壤矿化和可用的有积极的相关性.

结论:

臭虫采用有效的土壤获取和转化策略,以超越本地植物.
了解这些机制对于预测入侵植物动态和对热带岛屿生态系统的生态影响至关重要.

关键词:

氧化氨的微生物氧化氨的微生物克罗莫莱纳 (Chromolaena odorata) 是一种臭味的植物.的转化过程中的.热带珊瑚岛屿的热带珊瑚岛屿

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