树状菌根类型增加了土壤微生物生物质对沉积的负反
Mingli Yuan1, Zhaoyong Shi2, Jiakai Gao3
1College of Agriculture, Henan University of Science and Technology, Luoyang, 471023, China; School of Agriculture and Animal Husbandry Engineering, Zhoukou Vocational and Technical College, Zhoukou, 466000, China; Henan Engineering Research Center of Human Settlements, Luoyang, 471023, China; Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, 471023, China.
Journal of environmental management
|December 7, 2024
概括
沉积会对土壤微生物造成伤害,特别是与状菌根 (AM) 菌类相关的菌类. 这一元分析显示,与AM相关的微生物更容易受到丰富的影响,影响生态系统功能.
科学领域:
- 土壤生态学 土壤生态学
- 微生物学 微生物学
- 生态系统科学 生态系统科学
背景情况:
- 土壤微生物对生态系统健康,营养循环和碳捕获至关重要.
- 菌根真菌与植物形成共生关系,帮助营养吸收和土壤结构.
- (N) 丰富是影响土壤微生物群落的关键因素,但其与菌根菌的相互作用尚未完全理解.
研究的目的:
- 评估菌根真菌如何调解 (N) 沉积对土壤微生物生物质和呼吸的影响.
- 为了比较状菌根 (AM) 和非AM (NonAM) 类型真菌对N沉积的反应.
主要方法:
- 1945年的一项全球元分析将113项独立研究的观察结果结合起来.
- 分析土壤微生物生物质,微生物呼吸,根呼吸以及真菌与细菌的比率 (F:B比率).
- 结构方程建模以确定关键的环境驱动因素 (MAT,MAP).
主要成果:
- 沉积减少了总体,细菌和真菌生物质,以及F:B比率.
- 与非AM类型相比,AM类型中N沉积的负面影响更为明显,随着N应用率的提高而加剧.
- 根呼吸在AM型中增加了更多的N沉积,而微生物和土壤呼吸在AM型中减少了更多.
结论:
- 与AM真菌相关的土壤微生物比与非AM真菌相关的土壤微生物更容易受到N沉积的影响.
- 菌根类型影响植物和土壤对沉积的反应,对生态系统营养循环和可持续农业产生重大影响.
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