化学形式对土壤细菌群落和生态系统多功能性的差异影响 在温带草原草中
Jian-Guo Ma1, He-Yong Liu2, Jordi Sardans3,4
1State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Center for Grassland Microbiome, and College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China.
Global change biology
|December 11, 2025
概括
不同的形式对土壤细菌和生态系统功能有不同的影响. 酸/硫酸减少了网络的多样性和复杂性,与二碳酸不同,强调了有针对性的管理的必要性.
科学领域:
- 土壤微生物生态学
- 生态系统科学 生态系统科学
- 环境化学环境化学
背景情况:
- 来自沉积和农业的 (N) 丰富对土壤微生物群落和生态系统功能产生重大影响.
- 以前的研究经常使用单一的N物种,限制了对不同N形式如何影响土壤生态系统的理解.
- 区分N形式对于将微生物变化与生态系统多功能性和服务联系起来至关重要.
研究的目的:
- 评估四种形式二碳酸 (AC),酸 (AN),硫酸 (AS) 和尿素 (UR) 对土壤细菌群落和生态系统多功能性的差异影响.
- 评估不同的N应用率如何影响细菌结构,功能和分类学相互作用.
- 了解N诱导的细菌群落变化与生态系统多功能性之间的关系.
主要方法:
- 一个长期实验 (2016-2018) 在温带草原,内蒙古,中国.
- 在五个级别 (0,2,10,20,50 g N m−2年−1) 应用了四种N形式 (AC,AN,AS,UR),并进行了五次复制.
- 对土壤细菌社区结构,功能,共发生网络和生态系统多功能性的分析.
主要成果:
- 的形式和负载水平对细菌社区的结构,功能和共发生网络产生了不同的影响.
- 酸 (AN) 和硫酸 (AS) 显著减少了细菌多样性和网络复杂性,而二碳酸 (AC) 的影响最小.
- 与AC/UR相比,在AN/AS下细菌群落的变化与生态系统多功能性转变更为密切相关.
结论:
- 不同的形式对土壤细菌群落产生不同的影响,它们对生态系统多功能性的级联影响.
- 酸和硫酸对土壤细菌多样性和生态系统功能的影响比碳酸或尿素更为明显.
- 管理实践应考虑沉积和施肥的特定化学物种,以有效地维护土壤健康和生态系统服务.
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