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微生物矿化的微生物矿化受到从农田转化为果园在厚厚的沉积物中的微生物矿化的轻微影响

Wangjia Ji¹, Ruifeng Li¹, Xun Qian¹

¹State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.

The Science of the total environment

|November 2, 2023

概括

深层土壤中的微生物矿化 (MNM) 主要受到土壤深度的影响,而不是土地使用. 营养素的可用性和土壤条件,而不是农业实践,控制这些环境中的微生物活动.

科学领域:

土壤微生物学土壤微生物学
生物地质化学生物地质化学
深度生物圈研究研究

背景情况:

有机矿化对于土壤的碳和循环至关重要,对深层化酸盐有很大贡献.
微生物矿化 (MNM) 在深层土壤中,特别是在密集农业下,仍未得到充分研究.
了解深层土壤特征中的微生物结构和功能对于预测营养循环至关重要.

研究的目的:

在农田和果园下的深层土壤 (10米) 档案中研究CHIA寄存微生物的微生物结构和网络.
确定影响微生物多样性,组成和丰富性的因素,与土壤深度和土地利用相关.
评估土地利用变化对厚沉积物中MNM过程的影响.

主要方法:

分析了来自耕种农田和两个果园的9个10米土壤概况.
探究含有chiaA的微生物群落结构,多样性和丰富性的研究.
检查微生物共发生网络及其与土壤特性之间的关系.

主要成果:

微生物的多样性,组成和丰度随着土壤深度而显著变化,随着深度的增加而减少.
动态细菌和蛋白质细菌是主导类;微生物网络在果园下更简单.
深度依赖的土壤营养素 (总,有机碳,可用的) 显著影响了含有chiaA的微生物.

结论:

土壤深度是微生物社区结构和MNM的更重要的驱动因素,而不是深土壤中的土地使用类型.
有限的碳来源和土壤干燥抑制了深度不和区的MNM.
深度依赖的MNM过程在从农田过渡到果园时只受到轻微的影响.

关键词:

安普利康测序的测序方法同时发生的网络网络.深度依赖性这是一种深度依赖性.微生物矿化 (MNM) 是指微生物的矿化.定量PCR (qPCR) 是一种方法.

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