原生植物和真菌:加强城市土壤对抗突发干旱的生态功能
Yilong Hao1, Anqi Sun2, Changyi Lu2
1Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China.
The Science of the total environment
|August 8, 2024
概括
快速干旱破坏城市土壤,但真菌和原生菌有助于维持土壤生态功能 (SEF). 城市微生物网络不那么强大,突显了保护这些有益微生物免受干旱的必要性.
科学领域:
- 土壤生态学 土壤生态学
- 微生物生态学 微生物生态学
- 城市生态系统服务
背景情况:
- 突发干旱导致土壤湿度的显著变化,影响陆地生态系统,并挑战城市生态系统服务.
- 土壤生态功能 (SEF) 和土壤微生物对突发干旱的反应,特别是在城市环境中,尚不清楚.
研究的目的:
- 研究干旱条件对城市土壤与森林土壤相比,对城市土壤和土壤微生物群的影响.
- 阐明微生物群落 (包括细菌,真菌和原生体) 在干旱压力下的SEF中介作用.
主要方法:
- 使用了定量微生物元素循环分析,高通量测序和酶活性测量.
- 相关性分析和曼特尔测试被用来评估土壤水分,特性,微生物群落和SEF之间的关系.
- 进行了网络分析,以比较城市土壤与森林土壤中的微生物相互作用的结构和强度.
主要成果:
- 城市土壤的微生物组成在突然干旱下保持稳定,与森林不同,但SEF在两个环境中都受到影响.
- 细菌被确定为SEF的主要驱动因素,细菌多样性对城市土壤中的SEF产生负面影响.
- 菌和原生菌对城市土壤中的SEF产生了积极影响,并且与森林土壤中的细菌组成有显著的相关性,但不是城市土壤.
- 与森林土壤相比,由于有限的跨领域相互作用,城市土壤微生物网络的强度较低.
结论:
- 真菌和原生菌在保护城市土壤免受干旱干扰和提高城市生态功能的弹性方面发挥着至关重要的作用.
- 城市土壤中的细菌,真菌和原生体之间的有限相互作用导致微生物网络不那么强大,微生物驱动的生态功能受损.
- 了解这些微生物相互作用对于管理城市土壤和在不断变化的环境条件下维持生态系统服务至关重要.
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