长期的保护性耕作通过改变土壤中的多重营养相互作用来提高微生物碳使用效率
Ling Ma1, Guixiang Zhou2, Jiabao Zhang2
1College of Land and Environment, Shenyang Agricultural University, National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Arable Land Conservation in Northeast China, Ministry of Agriculture and Rural Affairs, Shenyang 110866, China.
The Science of the total environment
|January 15, 2024
概括
保护性耕作通过提高微生物碳利用效率 (CUE) 来增强土壤碳储存. 在这种实践中,通过自上而下的控制,Protists是改善CUE和土壤有机碳 (SOC) 的关键.
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
- 生物地质化学生物地质化学
背景情况:
- 微生物碳利用效率 (CUE) 对土壤碳储存和全球碳循环至关重要.
- 对于保护性耕作下的土壤微生物CUE,多营养性相互作用,特别是前列腺捕食的影响仍然不太清楚.
研究的目的:
- 研究长期耕作实践下的多营养相互作用对土壤微生物CUE和土壤有机碳 (SOC) 的调节.
- 确定基石生态集群在调解这些影响中的作用.
主要方法:
- 长期实地实验比较15年来保护性耕作 (CT) 与传统耕作 (控制,CK).
- 分析土壤微生物群落 (真菌和原生体),微生物生理特征 (CUE,MGR,Rs,营业额) 和SOC.
- 统计分析以评估生物多样性,微生物特征和SOC之间的相关性.
主要成果:
- 与传统耕作 (CK) 相比,保护耕作 (CT) 显著增加了微生物CUE,营业额和SOC.
- 耕实践和土壤深度显著影响了真菌和原生体社区结构.
- 基石集群内的土壤生物多样性与微生物生理特征和SOC有积极的相关性,其中原生态丰富是关键驱动因素.
结论:
- 土壤微型食物网中原生体的自上而下控制在保护性耕作下显著改善了微生物CUE.
- 这些发现支持在微生物工程中应用原生体,用于保护农业和增强土壤碳捕获.
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