城市化减少了上海大城市土壤微生物网络的复杂性和稳定性
Lan Liu1, Zhaochen Zhang2, Xin Wang3
1Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education, College of Forestry, Hainan University, Haikou 570228, PR China; Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
The Science of the total environment
|June 18, 2023
概括
城市化破坏了土壤微生物网络,使它们变得不那么连接,更加孤立. 这项研究揭示了城市环境如何直接和间接地影响这些关键的生态社区.
科学领域:
- 生态生态学 生态生态学
- 微生物学 微生物学
- 城市生态城市生态学
背景情况:
- 城市化显著改变了生态社区,影响了生态系统的功能.
- 土壤微生物群落对生态系统过程至关重要,但它们对城市化的网络反应仍然不太了解.
研究的目的:
- 调查城市化如何影响土壤考古,细菌和真菌社区的共同发生网络.
- 了解沿着城市化梯度的微生物网络的结构变化,并确定涉及的关键微生物种类.
主要方法:
- 分析了来自上海城市化梯度的258个土壤样本的共同发生网络.
- 检查网络的拓特征,微生物群落组成和土壤特性 (pH,有机碳).
- 模拟干扰实验,以评估网络效率和连接性变化.
主要成果:
- 城市化显著改变了微生物共同存在的网络结构,导致连接性减少和孤立性增加.
- 在城市化地区,特定的细菌 (Chloroflexi) 和真菌 (Ascomycota) 种群占主导地位.
- 城市化独特地解释了网络连接的变化,即使考虑到土壤的特性,如pH值和有机碳.
结论:
- 城市化对土壤微生物网络结构和功能有直接和间接的影响.
- 城市环境中变化的微生物网络可能会影响生态系统服务.
- 结果提供了对城市对土壤微生物生态学影响的关键见解.
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