牛放牧管理影响北大平原的土壤微生物多样性和社区网络复杂性
Upama Khatri-Chhetri1, Samiran Banerjee2, Karen A Thompson3
1Department of Agricultural, Food and Nutritional Science, Agriculture/Forestry Centre, University of Alberta, Edmonton, AB T6G 2P5, Canada.
The Science of the total environment
|December 17, 2023
概括
适应性多牧场 (AMP) 放牧增强了加拿大大草原的土壤微生物多样性和网络复杂性. 这种放牧方法增强了真菌的多样性,并创造了更复杂的微生物联系,潜在地改善了生态系统功能.
科学领域:
- 生态生态学 生态生态学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 土壤微生物群落对于草原的生态化学循环和生态系统的运行至关重要.
- 牛放牧是一种常见的土地使用,可以影响土壤微生物多样性和网络复杂性.
- 了解放牧影响对于管理北大平原草原生态系统至关重要.
研究的目的:
- 为了比较适应性多牧场 (AMP) 牧场和传统牧场对土壤微生物群落的影响.
- 研究微生物多样性和网络复杂性如何响应不同的牧场管理策略.
- 确定与每个放牧实践相关的关键微生物种群.
主要方法:
- 16S/ITS amplicon测序用于分析土壤微生物群落.
- 从加拿大大草原的AMP和传统农场收集了土壤样本.
- 分析了放牧指标,如养率和休息与放牧比率.
主要成果:
- 与传统放牧相比,AMP放牧显著增加了真菌的多样性和均性.
- AMP放牧导致了更复杂的微生物关联,并增加了微生物网络连接.
- 细菌和真菌的丰富性与养率和休息到放牧的比率有积极的相关性.
结论:
- 适应性的多草放牧实践可以增强土壤真菌多样性和微生物网络的复杂性.
- 特定的牧场管理指标影响土壤微生物的丰富性和多样性.
- 通过增强的微生物群落,AMP放牧显示出改善草原生态系统功能的潜力.
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