使用装饰植物恢复退化的城市土壤的微生物视角
Hongyong Qiao1, Luyao Wu2, Chaonan Li1
1Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, PR China; National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, PR China; Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing, PR China; School of Landscape Architecture, Beijing Forestry University, Beijing, PR China.
Journal of environmental management
|April 30, 2024
概括
多种装饰花朵的混合种植草地显著恢复退化的城市土壤. 这种方法增强了土壤营养,微生物多样性和有益的微生物功能,与单一物种种植不同.
科学领域:
- 城市生态学 城市生态学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 拆除的城市遗址会产生荒的,结构差的土壤,需要恢复.
- 装饰植物可以改善城市环境和土壤特性,但它们对退化土壤的影响尚未完全理解.
研究的目的:
- 调查混合种植草与单种草对退化的城市土壤物理化学性质和微生物群落的影响.
- 分析装饰植物引入后土壤细菌和真菌群体的功能和结构变化.
主要方法:
- 在退化的城市土壤上建立了一个混合种植草 (14种多年生植物) 和一个单种植草 (Iris tectorum).
- 在一年内监测土壤的物理化学特性和微生物群落 (16S rRNA和ITS测序).
- 利用FAPROTAX,FUNGuild,零模型分析和随机矩阵理论来评估微生物功能,社区结构和分子网络.
主要成果:
- 混合种植的草原显著增加了土壤总 (TN) 和有机物 (SOM) 的1.99倍和1.21倍.
- TN与土壤微生物的α多样性和社区结构正相关.
- 混合种植增强了有益的细菌 (化,有氧氧化) 和真菌 (共生菌),建立了复杂的微生物网络并增加了微生物多样性,与单一物种草不同.
结论:
- 混合种植草地通过改善土壤物理化学性质和增强微生物社区结构和功能,有效地恢复退化的城市土壤.
- 这种方法促进生态服务,并为在城市绿色空间土壤修复中使用多样化的植物群体提供理论支持.
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