长期灌对土壤分数和Populus euphratica种植园中的微生物群落的影响

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Yue He¹, Xiazhen Lin², Lei Wang¹

¹School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, China.

Forestry research

|November 11, 2024

概括

灌增加了的可用性,并改变了Populus euphratica种植园中的土壤微生物群落. 通过恢复这些微生物群落,水资源管理可以提高土壤质量和循环.

科学领域:

环境科学环境科学
土壤科学土壤科学
微生物学微生物学

背景情况:

灌对于管理Populus euphratica种植园至关重要.
灌对土壤 (P) 可用性和土壤微生物群的影响尚未完全理解.

研究的目的:

研究灌如何影响P. euphratica种植园中的土壤特性,P分量,酸酶活性和微生物群落.
阐明土壤P动态和灌下微生物群落转移之间的关系.

主要方法:

来自受灌和受干旱影响的P. euphratica种植园的土壤样本的比较.
分析土壤特性,各种P分量 (总P,可变P,适度可变P,NaHCO3-Pi,树脂P,NaHCO3-Po),酸酶活动和微生物群落 (细菌多样性,真菌多样性,性酸酶基因).

主要成果:

灌显著增加了总P,不稳定P和中度不稳定P.
不稳定P的增加主要是由于较高的NaHCO3-Pi;灌改变了不稳定P的组成.
土壤水分的改善增强了酸酶活性,表明土壤有机P矿化增加.
细菌和真菌的多样性,以及性酸酶基因,比微生物生物质或PLFA更好地表明土壤P分量动态.
特定的细菌家族 (Bradyrhizobiaceae,Nocardiaceae,Sphingomonadaceae) 与无机P (Pi) 有正相关,而Burkholderiaceae与负相关.

结论:

灌提高了土壤P的可用性和P. euphratica种植园的供应能力.
土壤P成分的变化与土壤微生物群落结构和功能的变化密切相关.
专注于土壤微生物恢复的水资源管理策略可以改善土壤质量和P循环.

关键词:

性酸酶基因社区灌灌方式 P 骑自行车的时间 (P) 分数中的 (P) 分数土壤微生物的特性

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