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春休放放牧时间影响了土壤分数,因为它改变了大量的基因,这些基因参与了在亚高山草原的循环运动

Hong Xiao¹, Yuanyuan Jing^1,2, Kai Ma¹

¹Grassland Ecosystem Key Laboratory of Ministry of Education, College of Pratacultural Science, Gansu Agricultural University, Lanzhou 730070, China.

|November 27, 2025

概括

早期的春季休息放牧通过增加可变的P分数和影响微生物P循环基因,提高了高山草原的土壤 (P) 可用性. 这种管理策略有利于草原的生产力和土壤营养动态.

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 (P) 的可用性对植物生长和生态系统生产力至关重要,通常受牲畜放牧等土地使用的影响.
阿尔卑斯山草原的季节性牧场管理可能会影响草原的生产力和营养循环,但其对土壤P可用性和微生物P转换的影响尚不清楚.

研究的目的:

调查不同春季休息放牧期对土壤P可用性和微生物P循环基因在高山草地中的长期影响.
为了确定关键的微生物过程和环境因素影响P转化在牧场管理下.

主要方法:

建立了一个长期的实地实验,使用五种春季休息放牧的治疗方法.
分析了土壤P分量,并使用元基因组测序来评估涉及P循环的微生物基因配置文件.
测量了诸如土壤温度和水透等环境变量.

主要成果:

早春休息放牧增加了不稳定的P分数 (Resin-P,NaHCO₃-Pi) 和改变了无机和有机的P分数 (减少了HCl-Pi,增加了度. 化 - ) 的存在.
甲基因组分析表明,P循环基因的丰富性发生变化,有机P矿化基因增加 (例如,phnA) 和无机P溶解 (ppa) 和P吸收 (pstB) 基因减少.
主导的P循环微生物属包括Rhodopseudomonas和Mesorhizobium,土壤温度和水透率被确定为关键的环境驱动因素.

结论:

早春休息放牧可以通过调节与P循环相关的土壤P分数和微生物基因表达来改善高山草地中的土壤P可用性.
受环境因素影响的牧场管理策略可以塑造微生物群落及其在草原生态系统内的营养转换中的功能作用.

关键词:

循环功能基因的功能基因分数是的分数.休息放牧的放牧方式下高山草原的草原.

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