Selective logging strongly affects forest structure and functions, which has direct and indirect effects on the soil microbial community. However, the effect of selective logging on soil microbial community composition remains unclear. We analyzed the soil microbial diversity and community composition in a pine (Pinus yunnanensis) forest using the Illumina platform for bacterial and fungal sequencing. The results showed that selective logging significantly altered most soil properties and stand attributes. Dominant phyla abundance varied significantly with change of selective logging intensity, affecting soil microbial community composition. The diversity of bacterial community decreased with the increase of selective logging intensity, whereas the diversity of fungi initially decreased and then increased. Soil properties accounted for most of the variation in the soil microbial communities, followed by stand attributes. Stand density (SD), soil pH, and soil moisture directly influenced the diversity of the bacterial communities, and understory species richness (USR), soil organic carbon (SOC), and soil hydrolysable nitrogen (HN) also directly influenced bacterial community composition. However, selective logging intensity affected the diversity and composition of the bacterial communities indirectly via SD, soil pH, HN, SOC, and USR. Similarly, the intensity of selective logging directly affected the diversity of fungal communities and also showed indirect effect on it via SD, soil pH, SOC, HN, C:N ratio, and soil available potassium. Further, selective logging intensity indirectly affected fungal community composition via soil available phosphorus. Our findings could be used to predict the change in the soil microbial community for the management of P. yunnanensis forest.

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选择性伐木对云南松林土壤微生物群落的影响

选择性伐木强烈影响森林的结构和功能，对土壤微生物群落具有直接和间接的影响。然而，选择性伐木对土壤微生物群落组成的影响仍不清楚。我们分析了松树（云南松）的土壤微生物多样性和群落组成）森林，使用Illumina平台进行细菌和真菌测序。结果表明，选择性伐木显着改变了大多数土壤性质和林分属性。随着选择性伐木强度的变化，优势种群的丰度发生显着变化，从而影响土壤微生物群落组成。随着选择性伐木强度的增加，细菌群落的多样性降低，而真菌的多样性先降低后增加。土壤特性占土壤微生物群落变化的大部分，其次是林分属性。林分密度（SD），土壤pH值和土壤湿度直接影响细菌群落的多样性，林下物种丰富度（USR），土壤有机碳（SOC），土壤中的可水解氮（HN）也直接影响细菌群落组成。但是，选择性测井强度通过SD，土壤pH，HN，SOC和USR间接影响细菌群落的多样性和组成。同样，选择性伐木的强度直接影响真菌群落的多样性，并通过SD，土壤pH，SOC，HN，C：N比和土壤速效钾对其产生间接影响。此外，选择性测井强度通过土壤有效磷间接影响真菌群落组成。我们的发现可用于预测土壤微生物群落的变化，从而管理 选择性伐木的强度直接影响真菌群落的多样性，并通过SD，土壤pH，SOC，HN，C：N比和土壤速效钾对其产生间接影响。此外，选择性测井强度通过土壤有效磷间接影响真菌群落组成。我们的发现可用于预测土壤微生物群落的变化，从而管理 选择性伐木的强度直接影响真菌群落的多样性，并通过SD，土壤pH，SOC，HN，C：N比和土壤速效钾对其产生间接影响。此外，选择性测井强度通过土壤有效磷间接影响真菌群落组成。我们的发现可用于预测土壤微生物群落的变化，从而管理云南松林。